1
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Käärik M, Arulepp M, Perkson A, Leis J. Effect of Pore Size Distribution on Energy Storage of Nanoporous Carbon Materials in Neat and Dilute Ionic Liquid Electrolytes. Molecules 2023; 28:7191. [PMID: 37894670 PMCID: PMC10609406 DOI: 10.3390/molecules28207191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
This study investigates three carbide-derived carbon (CDC) materials (TiC, NbC, and Mo2C) characterized by uni-, bi-, and tri-modal pore sizes, respectively, for energy storage in both neat and acetonitrile-diluted 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. A distribution of micro- and mesopores was studied through low-temperature N2 and CO2 adsorption. To elucidate the relationships between porosity and the electrochemical properties of carbon materials, cyclic voltammetry, galvanostatic cycling, and electrochemical impedance spectroscopy measurements were conducted using three-electrode test cells. The ultramicroporous TiC-derived carbon is characterized by a high packing density of 0.85 g cm-3, resulting in superior cathodic and anodic capacitances for both neat ionic liquid (IL) and a 1.9 M IL/acetonitrile electrolyte (93.6 and 75.8 F cm-3, respectively, in the dilute IL). However, the bi-modal pore-sized microporous NbC-derived carbon, with slightly lower cathodic and anodic capacitances (i.e., 85.0 and 73.7 F cm-3 in the dilute IL, respectively), has a lower pore resistance, making it more suitable for real-world applications. A symmetric two-electrode capacitor incorporating microporous CDC-NbC electrodes revealed an acceptable cycle life. After 10,000 cycles, the cell retained approximately 75% of its original capacitance, while the equivalent series resistance (ESR) only increased by 13%.
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Affiliation(s)
- Maike Käärik
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
| | - Mati Arulepp
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
| | - Anti Perkson
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
| | - Jaan Leis
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411 Tartu, Estonia
- Skeleton Technologies, Sepise 7, 11415 Tallinn, Estonia
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2
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Wang S, Li Z, Yang G, Lin J, Xu Q. Molecular dynamics study of fluorosulfonyl ionic liquids as electrolyte for electrical double layer capacitors. RSC Adv 2023; 13:29886-29893. [PMID: 37842684 PMCID: PMC10571016 DOI: 10.1039/d3ra04798a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/29/2023] [Indexed: 10/17/2023] Open
Abstract
The development of high-performance supercapacitors is an important goal in the field of energy storage. Ionic liquids (ILs) are promising electrolyte materials for efficient energy storage in supercapacitors, because of the high stability, low volatility, and wider electrochemical stability window than traditional electrolytes. However, ILs-based supercapacitors usually show a relatively lower power density owing to the inherent viscosity-induced low electrical conductivity. Fluorosulfonyl ILs have aroused much attention in energy storage devices due to its low toxicity and excellent stability. Here, we propose that structural modification is an effective way to improve the energy storage performance of fluorosulfonyl ILs through the classical molecular dynamics (MD) method. Four fluorosulfonyl ILs with different sizes and symmetries were considered. Series of properties including conductivity, interface structure, and double-layer capacitance curves were systematically investigated. The results show that smaller size and more asymmetric structure can enhance self-diffusion coefficient and conductivity, and improve the electrochemical performance. Appropriate modification of the electrodes can further enhance the capacitive performance. Our work provides an opportunity to further understand and develop the fluorosulfonyl ILs electrolyte in supercapacitors.
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Affiliation(s)
- Siqi Wang
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Zhuo Li
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Guangmin Yang
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Jianyan Lin
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Qiang Xu
- College of Prospecting and Surveying Engineering, Changchun Institute of Technology Changchun 130021 China
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3
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Dou Q, Wu N, Yuan H, Shin KH, Tang Y, Mitlin D, Park HS. Emerging trends in anion storage materials for the capacitive and hybrid energy storage and beyond. Chem Soc Rev 2021; 50:6734-6789. [PMID: 33955977 DOI: 10.1039/d0cs00721h] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Electrochemical capacitors charge and discharge more rapidly than batteries over longer cycles, but their practical applications remain limited due to their significantly lower energy densities. Pseudocapacitors and hybrid capacitors have been developed to extend Ragone plots to higher energy density values, but they are also limited by the insufficient breadth of options for electrode materials, which require materials that store alkali metal cations such as Li+ and Na+. Herein, we report a comprehensive and systematic review of emerging anion storage materials for performance- and functionality-oriented applications in electrochemical and battery-capacitor hybrid devices. The operating principles and types of dual-ion and whole-anion storage in electrochemical and hybrid capacitors are addressed along with the classification, thermodynamic and kinetic aspects, and associated interfaces of anion storage materials in various aqueous and non-aqueous electrolytes. The charge storage mechanism, structure-property correlation, and electrochemical features of anion storage materials are comprehensively discussed. The recent progress in emerging anion storage materials is also discussed, focusing on high-performance applications, such as dual-ion- and whole-anion-storing electrochemical capacitors in a symmetric or hybrid manner, and functional applications including micro- and flexible capacitors, desalination, and salinity cells. Finally, we present our perspective on the current impediments and future directions in this field.
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Affiliation(s)
- Qingyun Dou
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seoburo, Jangan-gu, Suwon 440-746, Korea.
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Li X, Liu Z, Cai C, Yu Q, Jin W, Xu M, Yu C, Li S, Zhou L, Mai L. Micropore-Rich Yolk-Shell N-doped Carbon Spheres: An Ideal Electrode Material for High-Energy Capacitive Energy Storage. CHEMSUSCHEM 2021; 14:1756-1762. [PMID: 33538082 DOI: 10.1002/cssc.202100113] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Increasing the energy density of electrochemical double layer capacitors (EDLCs) can broaden their applications in energy storage but remains a formidable challenge. Herein, micropore-rich yolk-shell structured N-doped carbon spheres (YSNCSs) were constructed by a one-pot surfactant-free self-assembly method in aqueous solution. The resultant YSNCSs after activation possessed an ultrahigh surface area of 2536 m2 g-1 , among which 80 % was contributed from micropores. When applied in EDLCs, the activated YSNCSs demonstrated an unprecedentedly high capacitance (270 F g-1 at 1 A g-1 ) in 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4 ]) ionic liquid, affording an ultrahigh energy density (133 Wh kg-1 at 943 W kg-1 ). The present contribution provides insight into engineering porous carbons for capacitive energy storage.
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Affiliation(s)
- Xinyuan Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Zhenhui Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Congcong Cai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Qiang Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Wenting Jin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Ming Xu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Chang Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Shidong Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Liang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, 528200, P. R. China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, 528200, P. R. China
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5
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Xie K, Dong Z, Wang N, Qi W, Zhao L. Radiation synthesis of imidazolium-based ionic liquid modified silica adsorbents for ReO 4− adsorption. NEW J CHEM 2021. [DOI: 10.1039/d1nj00332a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of ionic liquid functionalized silica-based adsorbents were synthesized and used to remove ReO4− from simulated radioactive wastewater.
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Affiliation(s)
- Kangjun Xie
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- School of Electrical and Electronic Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Zhen Dong
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- School of Electrical and Electronic Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Nan Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- School of Electrical and Electronic Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Wei Qi
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- School of Electrical and Electronic Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Long Zhao
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology
- School of Electrical and Electronic Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- China
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Mahanta U, Kundu D, Venkatesh RP, Sujatha S, Ilangovan SA, Banerjee T. Electrochemical Performance and Molecular Structure of Diluted 1-Alkyl-3-methylimidazolium Tetrafluoroborate Ionic Liquids and Their Mixture as Electrolytes for Double-Layer Capacitors: An Integrated Approach by Electrochemical Characterization and Molecular Dynamics Simulation. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Upasana Mahanta
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Debashis Kundu
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - R. Prasanna Venkatesh
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | | | | | - Tamal Banerjee
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
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7
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Zhang Y, Cummings PT. Effects of Solvent Concentration on the Performance of Ionic-Liquid/Carbon Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42680-42689. [PMID: 31608619 DOI: 10.1021/acsami.9b09939] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We use molecular dynamics simulations to investigate the effects of solvent concentration on the bulk properties of an ion liquid electrolyte and the electrochemical performance on carbon-based electrodes, including pristine graphene, oxidized graphene, graphene armchair edge, graphene zigzag edge, onion-like carbon, and slit-pore carbon. We find that diluting the electrolyte reduces the number of ion pairs in the bulk and improves ion dynamics. The capacitance of the two-edge electrodes decreases monotonically as the solvent concentration increases, while the capacitance of other nonedge electrodes exhibits nonmonotonic behavior and a capacitance maximum is observed. Further analyses on the electric double layer reveals two competing factors: solvation reduces the charge overscreening effect, but it also causes the dilution of absorbed ion concentration. While the former increases the capacitance in the low dilution regime, the latter decreases the capacitance in the high dilution regime. In addition, the dilution also significantly improves the ion dynamics at the interface. Our simulation results demonstrate that diluting an ionic liquid electrolyte could potentially boost the power density while maintaining or even slightly increasing the energy density with a careful selection of solvent concentrations on a nonedge carbon electrode.
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Affiliation(s)
- Yu Zhang
- Department of Chemical and Biomolecular Engineering , Vanderbilt University , Nashville , Tennessee 37225 , United States
| | - Peter T Cummings
- Department of Chemical and Biomolecular Engineering , Vanderbilt University , Nashville , Tennessee 37225 , United States
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8
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Pal B, Yang S, Ramesh S, Thangadurai V, Jose R. Electrolyte selection for supercapacitive devices: a critical review. NANOSCALE ADVANCES 2019; 1:3807-3835. [PMID: 36132093 PMCID: PMC9417677 DOI: 10.1039/c9na00374f] [Citation(s) in RCA: 161] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/20/2019] [Indexed: 05/03/2023]
Abstract
Electrolytes are one of the vital constituents of electrochemical energy storage devices and their physical and chemical properties play an important role in these devices' performance, including capacity, power density, rate performance, cyclability and safety. This article reviews the current state of understanding of the electrode-electrolyte interaction in supercapacitors and battery-supercapacitor hybrid devices. The article discusses factors that affect the overall performance of the devices such as the ionic conductivity, mobility, diffusion coefficient, radius of bare and hydrated spheres, ion solvation, viscosity, dielectric constant, electrochemical stability, thermal stability and dispersion interaction. The requirements needed to design better electrolytes and the challenges that still need to be addressed for building better supercapacitive devices for the competitive energy storage market have also been highlighted.
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Affiliation(s)
- Bhupender Pal
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang 26300 Gambang Kuantan Malaysia
| | - Shengyuan Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Materials Science and Engineering, Donghua University Shanghai 201620 P. R. China
| | - Subramaniam Ramesh
- Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia
| | | | - Rajan Jose
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang 26300 Gambang Kuantan Malaysia
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9
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Imidazolium Based Ionic Liquids as Electrolytes for Energy Efficient Electrical Double Layer Capacitor: Insights from Molecular Dynamics and Electrochemical Characterization. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00898-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Kwon HN, Jang SJ, Kang YC, Roh KC. The effect of ILs as co-salts in electrolytes for high voltage supercapacitors. Sci Rep 2019; 9:1180. [PMID: 30718616 PMCID: PMC6361913 DOI: 10.1038/s41598-018-37322-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/30/2018] [Indexed: 11/17/2022] Open
Abstract
Ionic liquids (ILs) which have electrical stability are attractive materials to enhance the potential window of electrolyte. According to the potential window is extended, available voltage for supercapacitor is broaden. In this study, the addition of ILs which is 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and 1-ethyl-3-methylimidazolium bis(trifluoromethylesulfonyl) imide (EMITFSI) as co-salts, to a supercapacitor electrolyte increases the ionic conductivity and stability of it due to inhibition of electrolyte decomposition. As a result, the electrochemical stability potential windows (ESPWs) of supercapacitor is improved and the supercapacitor exhibited increased cycling stability. The loss of specific capacitance upon addition of 7 wt% EMIBF4 or EMITFSI to the electrolyte was 2.5% and 8.7%, respectively, after 10,000 cycles at 3.5 V, compared to the specific capacitance of the initial discharge.
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Affiliation(s)
- Ha-Na Kwon
- Energy Efficient Materials Team, Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology (KICET), Soho-Ro 101, Jinju-Si, Gyeongnam, 52581, Korea.,Department of Materials Science & Engineering, Korea University, Anam-dong, Seongbuk-Gu, Seoul, 02841, Republic of Korea
| | - Su-Jin Jang
- Energy Efficient Materials Team, Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology (KICET), Soho-Ro 101, Jinju-Si, Gyeongnam, 52581, Korea.,Department of Materials Science & Engineering, Korea University, Anam-dong, Seongbuk-Gu, Seoul, 02841, Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science & Engineering, Korea University, Anam-dong, Seongbuk-Gu, Seoul, 02841, Republic of Korea
| | - Kwang Chul Roh
- Energy Efficient Materials Team, Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology (KICET), Soho-Ro 101, Jinju-Si, Gyeongnam, 52581, Korea.
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11
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Tripathi AK, Singh RK. Lithium salt assisted enhanced performance of supercapacitor based on quasi solid-state electrolyte. JOURNAL OF SAUDI CHEMICAL SOCIETY 2018. [DOI: 10.1016/j.jscs.2018.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Wang J, Xu Y, Ding B, Chang Z, Zhang X, Yamauchi Y, Wu KCW. Confined Self-Assembly in Two-Dimensional Interlayer Space: Monolayered Mesoporous Carbon Nanosheets with In-Plane Orderly Arranged Mesopores and a Highly Graphitized Framework. Angew Chem Int Ed Engl 2018; 57:2894-2898. [DOI: 10.1002/anie.201712959] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Jie Wang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 P. R. China
- Department of Chemical Engineering; National Taiwan University; Roosevelt Road Taipei 10617 Taiwan
- International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yunling Xu
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Bing Ding
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Zhi Chang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Xiaogang Zhang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Yusuke Yamauchi
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 P. R. China
- International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
- School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN); The University of Queensland; Brisbane QLD 4072 Australia
- Department of Plant & Environmental New Resources; Kyung Hee University; 1732 Deogyeong-daero Giheung-gu, Yongin-si, Gyeonggi-do 446-701 South Korea
| | - Kevin C.-W. Wu
- Department of Chemical Engineering; National Taiwan University; Roosevelt Road Taipei 10617 Taiwan
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13
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Wang J, Xu Y, Ding B, Chang Z, Zhang X, Yamauchi Y, Wu KCW. Confined Self-Assembly in Two-Dimensional Interlayer Space: Monolayered Mesoporous Carbon Nanosheets with In-Plane Orderly Arranged Mesopores and a Highly Graphitized Framework. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712959] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jie Wang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 P. R. China
- Department of Chemical Engineering; National Taiwan University; Roosevelt Road Taipei 10617 Taiwan
- International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yunling Xu
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Bing Ding
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Zhi Chang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Xiaogang Zhang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies; College of Materials Science & Engineering; Nanjing University of Aeronautics and Astronautics; Nanjing 210016 P. R. China
| | - Yusuke Yamauchi
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 P. R. China
- International Center for Materials Nanoarchitectonics (WPI-MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
- School of Chemical Engineering & Australian Institute for Bioengineering and Nanotechnology (AIBN); The University of Queensland; Brisbane QLD 4072 Australia
- Department of Plant & Environmental New Resources; Kyung Hee University; 1732 Deogyeong-daero Giheung-gu, Yongin-si, Gyeonggi-do 446-701 South Korea
| | - Kevin C.-W. Wu
- Department of Chemical Engineering; National Taiwan University; Roosevelt Road Taipei 10617 Taiwan
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14
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Zarrougui R, Hachicha R, Rjab R, Messaoudi S, Ghodbane O. Physicochemical characterizations of novel dicyanamide-based ionic liquids applied as electrolytes for supercapacitors. RSC Adv 2018; 8:31213-31223. [PMID: 35548773 PMCID: PMC9085644 DOI: 10.1039/c8ra05820b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 08/30/2018] [Indexed: 11/23/2022] Open
Abstract
Novel ionic liquids (ILs), containing a dicyanamide anion (DCA−), are synthesized and applied as suitable electrolytes for electrochemical double layer capacitors (EDLCs). The prepared ILs are either composed of triethyl-propargylammonium (N222pr+) or triethyl-butylammonium (N2224+) cations paired with the DCA− anion. The structure of the cation influences its electrostatic interaction with the DCA− anion and highly impacts the physical and electrochemical properties of the as-prepared ILs. The geometry and the length of the alkyl chain of the propargyl group in N222pr+ enhance the ionic conductivity of N222pr–DCA (11.68 mS cm−1) when compared to N2224–DCA (5.26 mS cm−1) at 298 K. It is demonstrated that the Vogel–Tammann–Fulcher model governs the variations of the transport properties investigated over the temperature range of 298–353 K. A maximum potential window of 3.29 V is obtained when N222pr–DCA is used as electrolyte in a graphene based symmetric EDLC system. Cyclic voltammetry and galvanostatic measurements confirm that both electrolytes exhibit an ideal capacitive behavior. The highest specific energy of 55 W h kg−1 is exhibited in the presence of N2224–DCA at a current density of 2.5 A g−1. Novel ionic liquids (ILs), containing a dicyanamide anion (DCA−), are synthesized and applied as suitable electrolytes for electrochemical double layer capacitors (EDLCs).![]()
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Affiliation(s)
- Ramzi Zarrougui
- Laboratoire des Matériaux Utiles (LR10INRAP01)
- Institut National de Recherche et D'analyse Physico-chimique
- 2020 Ariana
- Tunisia
| | - Rahma Hachicha
- Laboratoire des Matériaux Utiles (LR10INRAP01)
- Institut National de Recherche et D'analyse Physico-chimique
- 2020 Ariana
- Tunisia
- Université de Tunis El Manar
| | - Refka Rjab
- Laboratoire des Matériaux Utiles (LR10INRAP01)
- Institut National de Recherche et D'analyse Physico-chimique
- 2020 Ariana
- Tunisia
- Université de Tunis El Manar
| | | | - Ouassim Ghodbane
- Laboratoire des Matériaux Utiles (LR10INRAP01)
- Institut National de Recherche et D'analyse Physico-chimique
- 2020 Ariana
- Tunisia
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15
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Zarrougui R, Hachicha R, Rjab R, Ghodbane O. 1-Allyl-3-methylimidazolium-based ionic liquids employed as suitable electrolytes for high energy density supercapacitors based on graphene nanosheets electrodes. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.078] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Dou Q, Liu L, Yang B, Lang J, Yan X. Silica-grafted ionic liquids for revealing the respective charging behaviors of cations and anions in supercapacitors. Nat Commun 2017; 8:2188. [PMID: 29259171 PMCID: PMC5736757 DOI: 10.1038/s41467-017-02152-5] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 11/10/2017] [Indexed: 11/08/2022] Open
Abstract
Supercapacitors based on activated carbon electrodes and ionic liquids as electrolytes are capable of storing charge through the electrosorption of ions on porous carbons and represent important energy storage devices with high power delivery/uptake. Various computational and instrumental methods have been developed to understand the ion storage behavior, however, techniques that can probe various cations and anions of ionic liquids separately remain lacking. Here, we report an approach to monitoring cations and anions independently by using silica nanoparticle-grafted ionic liquids, in which ions attaching to silica nanoparticle cannot access activated carbon pores upon charging, whereas free counter-ions can. Aided by this strategy, conventional electrochemical characterizations allow the direct measurement of the respective capacitance contributions and acting potential windows of different ions. Moreover, coupled with electrochemical quartz crystal microbalance, this method can provide unprecedented insight into the underlying electrochemistry.
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Affiliation(s)
- Qingyun Dou
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, China
- University of Chinese Academy of Sciences, Beijing, 100080, China
| | - Lingyang Liu
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, China
- University of Chinese Academy of Sciences, Beijing, 100080, China
| | - Bingjun Yang
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, China
| | - Junwei Lang
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, China
| | - Xingbin Yan
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, China.
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17
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S. SR, Punnoose D, Bae JH, Durga IK, Thulasi-Varma CV, Naresh B, Subramanian A, Raman V, Kim HJ. Preparation and electrochemical performances of NiS with PEDOT:PSS chrysanthemum petal like nanostructure for high performance supercapacitors. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.134] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Hu G, Pandey GP, Liu Q, Anaredy RS, Ma C, Liu M, Li J, Shaw SK, Wu J. Self-Organization of Ions at the Interface between Graphene and Ionic Liquid DEME-TFSI. ACS APPLIED MATERIALS & INTERFACES 2017; 9:35437-35443. [PMID: 28920423 DOI: 10.1021/acsami.7b10912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Electrochemical effects manifest as nonlinear responses to an applied electric field in electrochemical devices, and are linked intimately to the molecular orientation of ions in the electric double layer (EDL). Herein, we probe the origin of the electrochemical effect using a double-gate graphene field effect transistor (GFET) of ionic liquid N,N-diethyl-N-(2-methoxyethyl)-N-methylammonium bis(trifluoromethylsulfonyl)imide (DEME-TFSI) top-gate, paired with a ferroelectric Pb0.92La0.08Zr0.52Ti0.48O3 (PLZT) back-gate of compatible gating efficiency. The orientation of the interfacial molecular ions can be extracted by measuring the GFET Dirac point shift, and their dynamic response to ultraviolet-visible light and a gate electric field was quantified. We have observed that the strong electrochemical effect is due to the TFSI anions self-organizing on a treated GFET surface. Moreover, a reversible order-disorder transition of TFSI anions self-organized on the GFET surface can be triggered by illuminating the interface with ultraviolet-visible light, revealing that it is a useful method to control the surface ion configuration and the overall performance of the device.
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Affiliation(s)
- Guangliang Hu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
- School of Microelectronics, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
- Department of Physics and Astronomy, University of Kansas , Lawrence, Kansas 66045, United States
| | - Gaind P Pandey
- Department of Chemistry, Kansas State University , Manhattan, Kansas 66506, United States
| | - Qingfeng Liu
- Department of Physics and Astronomy, University of Kansas , Lawrence, Kansas 66045, United States
| | - Radhika S Anaredy
- Department of Chemistry, University of Iowa , Iowa City, Iowa 52242, United States
| | - Chunrui Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
| | - Ming Liu
- School of Microelectronics, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
| | - Jun Li
- Department of Chemistry, Kansas State University , Manhattan, Kansas 66506, United States
| | - Scott K Shaw
- Department of Chemistry, University of Iowa , Iowa City, Iowa 52242, United States
| | - Judy Wu
- Department of Physics and Astronomy, University of Kansas , Lawrence, Kansas 66045, United States
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19
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Zhang L, Du S, Song Q, Liu Y, Guo S. Fluorine-free ionic liquid based on thiocyanate anion with propylene carbonate as electrolytes for supercapacitors: Effects of concentration and temperature. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-7100-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Shi M, Yang C, Song X, Liu J, Zhao L, Zhang P, Gao L. Recoverable Wire-Shaped Supercapacitors with Ultrahigh Volumetric Energy Density for Multifunctional Portable and Wearable Electronics. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17051-17059. [PMID: 28481083 DOI: 10.1021/acsami.7b02478] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Wire-shaped supercapacitors (SCs) based on shape memory materials are of considerable interest for next-generation portable and wearable electronics. However, the bottleneck in this field is how to develop the devices with excellent electrochemical performance while well-maintaining recoverability and flexibility. Herein, a unique asymmetric electrode concept is put forward to fabricate smart wire-shaped SCs with ultrahigh energy density, which is realized by using porous carbon dodecahedra coated on NiTi alloy wire and flexible graphene fiber as yarn electrodes. Notably, the wire-shaped SCs not only exhibit high flexibility that can be readily woven into real clothing but also represent the available recoverable ability. When irreversible plastic deformations happen, the deformed shape of the devices can automatically resume the initial predesigned shape in a warm environment (about 35 °C). More importantly, the wire-shaped SCs act as efficient energy storage devices, which display high volumetric energy density (8.9 mWh/cm3), volumetric power density (1080 mW/cm3), strong durability in multiple mechanical states, and steady electrochemical behavior after repeated shape recovery processes. Considering their relative facile fabrication technology and excellent electrochemical performance, this asymmetric electrode strategy produced smart wire-shaped supercapacitors desirable for multifunctional portable and wearable electronics.
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Affiliation(s)
- Minjie Shi
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Cheng Yang
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Xuefeng Song
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Jing Liu
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Liping Zhao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Peng Zhang
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Lian Gao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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21
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Li C, Zhang X, Wang K, Sun X, Liu G, Li J, Tian H, Li J, Ma Y. Scalable Self-Propagating High-Temperature Synthesis of Graphene for Supercapacitors with Superior Power Density and Cyclic Stability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1604690. [PMID: 27943446 DOI: 10.1002/adma.201604690] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/13/2016] [Indexed: 06/06/2023]
Abstract
An ultrafast self-propagating high-temperature synthesis technique offers scalable routes for the fabrication of mesoporous graphene directly from CO2 . Due to the excellent electrical conductivity and high ion-accessible surface area, supercapacitor electrodes based on the obtained graphene exhibit superior energy and power performance. The capacitance retention is higher than 90% after one million charge/discharge cycles.
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Affiliation(s)
- Chen Li
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiong Zhang
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Kai Wang
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Xianzhong Sun
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Guanghua Liu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jiangtao Li
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Huanfang Tian
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jianqi Li
- Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yanwei Ma
- Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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22
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Guo N, Li M, Wang Y, Sun X, Wang F, Yang R. Soybean Root-Derived Hierarchical Porous Carbon as Electrode Material for High-Performance Supercapacitors in Ionic Liquids. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33626-33634. [PMID: 27960404 DOI: 10.1021/acsami.6b11162] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Soybeans are extensively cultivated worldwide as human food. However, large quantities of soybean roots (SRs), which possess an abundant three-dimensional (3D) structure, remain unused and produce enormous pressure on the environment. Here, 3D hierarchical porous carbon was prepared by the facile carbonization of SRs followed by chemical activation. The as-prepared material, possessing large specific surface area (2143 m2 g-1), good electrical conductivity, and unique 3D hierarchical porosity, shows outstanding electrochemical performance as an electrode material for supercapacitors, such as a high capacitance (276 F g-1 at 0.5 A g-1), superior cycle stability (98% capacitance retention after 10,000 cycles at 5 A g-1), and good rate capability in a symmetric two-electrode supercapacitor in 6 M KOH. Furthermore, the maximum energy density of as-assembled symmetric supercapacitor can reach 100.5 Wh kg-1 in neat EMIM BF4. Moreover, a value of 40.7 Wh kg-1 is maintained at ultrahigh power density (63000 W kg-1). These results show that the as-assembled supercapacitor can simultaneously deliver superior energy and power density.
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Affiliation(s)
- Nannan Guo
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
| | - Min Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
| | - Yong Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
- North Institute for Scientific & Technical Information , Beijing 100089, People's Republic of China
| | - Xingkai Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
| | - Feng Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
| | - Ru Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China
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23
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Shi M, Zhao L, Song X, Liu J, Zhang P, Gao L. Highly Conductive Mo 2C Nanofibers Encapsulated in Ultrathin MnO 2 Nanosheets as a Self-Supported Electrode for High-Performance Capacitive Energy Storage. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32460-32467. [PMID: 27808498 DOI: 10.1021/acsami.6b10637] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nanostructured transition metal carbides (TMCs) with superior electrochemical properties are promising materials for high-efficiency energy-storage applications. Herein one-dimensional molybdenum carbide nanofibers (Mo2C NFs) have been fabricated by a facile and effective electrospinning strategy. Based on the cross-linked network architecture with ultrahigh electronic conductivity, each Mo2C NF is uniformly encapsulated in lamellar manganese dioxide (MnO2) via electrodeposition, forming a self-supported MnO2-Mo2C NF film with excellent electrochemical activity. Remarkably, the highly conductive inner layer of porous Mo2C NFs acts like a "highway" to facilitate charge transport and ionic diffusion, while the MnO2 nanosheets with abundant active area are favorable for the accumulation of effective electric charges. Benefiting from these features, the hybrid film is directly applied as the self-standing electrode of supercapacitors (SCs) without any additives, which delivers considerably large specific capacitance with strong durability in both aqueous and organic (ionic liquid) electrolytes. This work elucidates a feasible way toward heteronanofiber engineering of TMCs on a promising additive-free electrode for flexible and high-performance SCs.
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Affiliation(s)
- Minjie Shi
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Liping Zhao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Xuefeng Song
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Jing Liu
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Peng Zhang
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Lian Gao
- State Key Laboratory for Metallic Matrix Composite Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
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24
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Zhong C, Deng Y, Hu W, Qiao J, Zhang L, Zhang J. A review of electrolyte materials and compositions for electrochemical supercapacitors. Chem Soc Rev 2016; 44:7484-539. [PMID: 26050756 DOI: 10.1039/c5cs00303b] [Citation(s) in RCA: 1002] [Impact Index Per Article: 125.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Electrolytes have been identified as some of the most influential components in the performance of electrochemical supercapacitors (ESs), which include: electrical double-layer capacitors, pseudocapacitors and hybrid supercapacitors. This paper reviews recent progress in the research and development of ES electrolytes. The electrolytes are classified into several categories, including: aqueous, organic, ionic liquids, solid-state or quasi-solid-state, as well as redox-active electrolytes. Effects of electrolyte properties on ES performance are discussed in detail. The principles and methods of designing and optimizing electrolytes for ES performance and application are highlighted through a comprehensive analysis of the literature. Interaction among the electrolytes, electro-active materials and inactive components (current collectors, binders, and separators) is discussed. The challenges in producing high-performing electrolytes are analyzed. Several possible research directions to overcome these challenges are proposed for future efforts, with the main aim of improving ESs' energy density without sacrificing existing advantages (e.g., a high power density and a long cycle-life) (507 references).
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Affiliation(s)
- Cheng Zhong
- Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Yida Deng
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, China
| | - Wenbin Hu
- Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China. and Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin 300072, China
| | - Jinli Qiao
- School of Environmental Engineering, Donghua University, Shanghai, China
| | - Lei Zhang
- Energy, Mining & Environment, National Research Council of Canada, Vancouver, BC, Canada
| | - Jiujun Zhang
- Energy, Mining & Environment, National Research Council of Canada, Vancouver, BC, Canada
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25
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Shen B, Lang J, Guo R, Zhang X, Yan X. Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25378-89. [PMID: 26502031 DOI: 10.1021/acsami.5b07909] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
All-solid-state microsupercapacitors (MSCs) have been receiving intense interest due to their potential as micro/nanoscale energy storage devices, but their low energy density has limited practical applications. It has been reported that gel electrolytes based on ionic liquids (ionogels) with large potential windows can be used as solid electrolytes to enhance the energy density of MSCs, but a systematic study on how to select and evaluate such ionogels for MSCs is rare. In this study, we construct a series of all-solid-state asymmetric MSCs on the interdigital finger electrodes, using graphene quantum dots (GQDs) as the negative electrode, MnO2 nanosheets as the positive electrode, and different ionogels as the solid electrolytes. Among them, the MSC using 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][NTF2]) with 4 wt % fumed SiO2 ionogel exhibited the best electrochemical performance, having excellent rate capability with the scan rate up to 2000 V s(-1), ultrafast frequency response (τ0 = 206.9 μs) and high energy density. The outstanding performance of this device mainly results from fast ion diffusion, high ion conductivity of the ionogel, and ionic liquid-matrix interactions. The results presented here provide guidance for picking out appropriate ionogels for use in high-performance all-solid-state MSCs to meet the growing requirement of micronanoscale energy storage devices. Additionally, the ultrafast frequency response of our MSCs suggests potential applications in ac line-filters.
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Affiliation(s)
- Baoshou Shen
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100039, People's Republic of China
| | - Junwei Lang
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China
| | - Ruisheng Guo
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China
| | - Xu Zhang
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China
| | - Xingbin Yan
- Laboratory of Clean Energy Chemistry and Materials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China
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26
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Yang W, Ni M, Ren X, Tian Y, Li N, Su Y, Zhang X. Graphene in Supercapacitor Applications. Curr Opin Colloid Interface Sci 2015. [DOI: 10.1016/j.cocis.2015.10.009] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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