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Metal-free, NH3-activated N-doped mesoporous nanocarbon electrocatalysts for the oxygen reduction reaction. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.107092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Paul R, Du F, Dai L, Ding Y, Wang ZL, Wei F, Roy A. 3D Heteroatom-Doped Carbon Nanomaterials as Multifunctional Metal-Free Catalysts for Integrated Energy Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805598. [PMID: 30761622 DOI: 10.1002/adma.201805598] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/25/2018] [Indexed: 05/25/2023]
Abstract
Sustainable and cost-effective energy generation has become crucial for fulfilling present energy requirements. For this purpose, the development of cheap, scalable, efficient, and reliable catalysts is essential. Carbon-based heteroatom-doped, 3D, and mesoporous electrodes are very promising as catalysts for electrochemical energy conversion and storage. Various carbon allotropes doped with a variety of heteroatoms can be utilized for cost-effective mass production of electrode materials. 3D porous carbon electrodes provide multiple advantages, such as large surface area, maximized exposure to active sites, 3D conductive pathways for efficient electron transport, and porous channels to facilitate electrolyte diffusion. However, it is challenging to synthesize and functionalize isotropic 3D carbon structures. Here, various synthesis processes of 3D porous carbon materials are summarized to understand how their physical and chemical properties together with heteroatom doping dictate the electrochemical catalytic performance. Prospects of attractive 3D carbon structural materials for energy conversion and efficient integrated energy systems are also discussed.
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Affiliation(s)
- Rajib Paul
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Feng Du
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Liming Dai
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Yong Ding
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Zhong Lin Wang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Fei Wei
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Ajit Roy
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, OH, 45433, USA
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Liu D, Dai L, Lin X, Chen JF, Zhang J, Feng X, Müllen K, Zhu X, Dai S. Chemical Approaches to Carbon-Based Metal-Free Catalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804863. [PMID: 30644998 DOI: 10.1002/adma.201804863] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/01/2018] [Indexed: 06/09/2023]
Abstract
Highly active and durable catalysts play a key role in clean energy technologies. However, the high cost, low reserves, and poor stability of noble-metal-based catalysts have hindered the large-scale development of renewable energy. Owing to their low cost, earth abundance, high activity, and excellent stability, carbon-based metal-free catalysts (CMFCs) are promising alternatives to precious-metal-based catalysts. Although many synthetic methods based on solution, surface/interface, solid state, and noncovalent chemistries have been developed for producing numerous CMFCs with diverse structures and functionalities, there is still a lack of effective approaches to precisely control the structures of active sites. Therefore, novel chemical approaches are needed for the development of highly active and durable CMFCs that are capable of replacing precious-metal catalysts for large-scale applications. Herein, a comprehensive and critical review on chemical approaches to CMFCs is given by summarizing important advancements, current challenges, and future perspectives in this emerging field. Through such a critical review, our understanding of CMFCs and the associated synthetic processes will be significantly increased.
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Affiliation(s)
- Dong Liu
- BUCT-CWRU International Joint Laboratory, State Key Laboratory of Organic-Inorganic Composites, Center for Soft Matter Science and Engineering, College of Energy, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Liming Dai
- BUCT-CWRU International Joint Laboratory, State Key Laboratory of Organic-Inorganic Composites, Center for Soft Matter Science and Engineering, College of Energy, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106, USA
| | - Xuanni Lin
- BUCT-CWRU International Joint Laboratory, State Key Laboratory of Organic-Inorganic Composites, Center for Soft Matter Science and Engineering, College of Energy, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jian-Feng Chen
- BUCT-CWRU International Joint Laboratory, State Key Laboratory of Organic-Inorganic Composites, Center for Soft Matter Science and Engineering, College of Energy, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jian Zhang
- Center for Advancing Electronics Dresden (Cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Xinliang Feng
- Center for Advancing Electronics Dresden (Cfaed) and Department of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Klaus Müllen
- Max-Planck Institut für Polymerforschung, 55128, Mainz, Germany
| | - Xiang Zhu
- Chemical Sciences Division, Oak Ridge National Laboratory, TN, 37831, USA
| | - Sheng Dai
- Chemical Sciences Division, Oak Ridge National Laboratory, TN, 37831, USA
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Guo X, Zhang Q, Li Q, Yu H, Liu Y. Composite Aerogels of Carbon Nanocellulose Fibers and Mixed-Valent Manganese Oxides as Renewable Supercapacitor Electrodes. Polymers (Basel) 2019; 11:E129. [PMID: 30960113 PMCID: PMC6404137 DOI: 10.3390/polym11010129] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 01/02/2019] [Accepted: 01/03/2019] [Indexed: 11/16/2022] Open
Abstract
Bio-waste derived nanocelluloses show excellent mechanical flexibility and self-aggregated capability, which enable them to be good supporting substrates for the synthesis of electroactive materials. Herein, we present a facile route for fabricating composite aerogels consisting of carbonized nanocellulose fibers (CNF) and mixed-valent manganese oxide (MnOx), toward supercapacitor applications. Mixed solutions of nanocellulose and manganese acetate with different ratios were prepared and freeze-dried into hybrid aerogels. The hybrid aerogels were then transformed into CNF/MnOx composites by a calcination process. The CNF membranes served as porous carbon nano-reservoirs for MnOx and electrolyte. The CNF/MnOx composites also kept a 3D porous aerogel structure with hierarchical pores, which enabled stable transport of both electrolyte ions and electrons to the electrode surface, leading to low a charge-transfer impedance and good electrochemical kinetics. The CNF/MnOx-based symmetric supercapacitor showed a satisfied energy density and power density of 37.5 Wh kg-1 and 2.75 kW kg-1, respectively. All the above results demonstrate the feasibility of using sustainable nanocellulose as a nanoscale carbon substrate for the synthesis of hybrid composite electrodes toward renewable supercapacitor applications.
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Affiliation(s)
- Xiaoyu Guo
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Qi Zhang
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Qing Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Haipeng Yu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Yixing Liu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
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Zdolšek N, Dimitrijević A, Bendová M, Krstić J, Rocha RP, Figueiredo JL, Bajuk-Bogdanović D, Trtić-Petrović T, Šljukić B. Electrocatalytic Activity of Ionic-Liquid-Derived Porous Carbon Materials for the Oxygen Reduction Reaction. ChemElectroChem 2018. [DOI: 10.1002/celc.201701369] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nikola Zdolšek
- Laboratory of Physics, Vinča Institute of nuclear sciences; University of Belgrade; P.O. Box 522 11001 Belgrade Serbia
| | - Aleksandra Dimitrijević
- Laboratory of Physics, Vinča Institute of nuclear sciences; University of Belgrade; P.O. Box 522 11001 Belgrade Serbia
| | - Magdalena Bendová
- Department of Aerosol Chemistry and Physics; Institute of Chemical Process Fundamentals of the CAS; v. v. i., Rozvojová 135/1 Prague Czech Republic
| | - Jugoslav Krstić
- Center for Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy; University of Belgrade; Njegoševa 12 Belgrade Serbia
| | - Raquel P. Rocha
- Laboratory of Catalysis and Materials, Associate Laboratory LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; R. Dr. Roberto Frias 4200-465 Porto Portugal
| | - José L. Figueiredo
- Laboratory of Catalysis and Materials, Associate Laboratory LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; R. Dr. Roberto Frias 4200-465 Porto Portugal
| | - Danica Bajuk-Bogdanović
- Faculty of Physical Chemistry; University of Belgrade; Studentskitrg 12-16 11158 Belgrade Serbia
| | - Tatjana Trtić-Petrović
- Laboratory of Physics, Vinča Institute of nuclear sciences; University of Belgrade; P.O. Box 522 11001 Belgrade Serbia
| | - Biljana Šljukić
- Faculty of Physical Chemistry; University of Belgrade; Studentskitrg 12-16 11158 Belgrade Serbia
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