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Di Y, Xiang J, Bu N, Loy S, Yang W, Zhao R, Wu F, Sun X, Wu Z. Sophisticated Structural Tuning of NiMoO4@MnCo2O4 Nanomaterials for High Performance Hybrid Capacitors. NANOMATERIALS 2022; 12:nano12101674. [PMID: 35630896 PMCID: PMC9143399 DOI: 10.3390/nano12101674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/09/2022] [Accepted: 05/09/2022] [Indexed: 02/05/2023]
Abstract
NiMoO4 is an excellent candidate for supercapacitor electrodes, but poor cycle life, low electrical conductivity, and small practical capacitance limit its further development. Therefore, in this paper, we fabricate NiMoO4@MnCo2O4 composites based on a two-step hydrothermal method. As a supercapacitor electrode, the sample can reach 3000 mF/cm2 at 1 mA/cm2. The asymmetric supercapacitor (ASC), NiMoO4@MnCo2O4//AC, can be constructed with activated carbon (AC) as the negative electrode, the device can reach a maximum energy density of 90.89 mWh/cm3 at a power density of 3726.7 mW/cm3 and the capacitance retention can achieve 78.4% after 10,000 cycles.
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Affiliation(s)
- Yifei Di
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
| | - Jun Xiang
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
- Correspondence: (J.X.); (R.Z.); (F.W.); Tel./Fax: +86-416-4199650 (R.Z.)
| | - Nan Bu
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
| | - Sroeurb Loy
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
| | - Wenduo Yang
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
| | - Rongda Zhao
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
- Correspondence: (J.X.); (R.Z.); (F.W.); Tel./Fax: +86-416-4199650 (R.Z.)
| | - Fufa Wu
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
- Correspondence: (J.X.); (R.Z.); (F.W.); Tel./Fax: +86-416-4199650 (R.Z.)
| | - Xiaobang Sun
- School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China; (Y.D.); (N.B.); (S.L.); (W.Y.); (X.S.)
| | - Zhihui Wu
- Liaoning Brother Electronics Technology Co., Chaoyang 122000, China;
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Du X, Liu L, Xie Z, Yu D, Han L, Zhang Y, Cui Z, Xue Y, Zhao X, Liu X. Microwave‐Assisted Rapid Synthesis of Urchin‐Like Bimetallic Mn–Co Carbonate Composites for High‐Performance Supercapacitors. ChemistrySelect 2021. [DOI: 10.1002/slct.202101418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaomin Du
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Liangyu Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Zhengjie Xie
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Deyang Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Leiyun Han
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Yuwan Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Zheng Cui
- State Key Laboratory of Superhard Materials College of Physics Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Ying Xue
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Xudong Zhao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
| | - Xiaoyang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University 2699 Qian Jin Street Changchun 130012 China
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The Effect of an External Magnetic Field on the Electrochemical Capacitance of Nanoporous Nickel for Energy Storage. NANOMATERIALS 2019; 9:nano9050694. [PMID: 31060223 PMCID: PMC6566679 DOI: 10.3390/nano9050694] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/25/2019] [Accepted: 04/28/2019] [Indexed: 11/20/2022]
Abstract
This work investigates the effect of a magnetic field on the electrochemical performance of nanoporous nickel (np-Ni). We first compare the electrochemical capacitance of np-Ni electrodes, which were prepared using the chemical dealloying strategy under different magnetic flux densities (B = 0, 500 mT). Our experimental data show that np-Ni500 prepared under an external magnetic field of 500 mT exhibits a much better electrochemical performance, in comparison with that (np-Ni0) prepared without applying a magnetic field. Furthermore, the specific capacitance of the np-Ni0 electrode could be further enhanced when we increase the magnetic flux densities from 0 T to 500 mT, whereas the np-Ni500 electrode exhibits a stable electrochemical performance under different magnetic flux densities (B = 0 mT, 300 mT, 500 mT). This could be attributed to the change in the electrochemical impedance of the np-Ni0 electrode induced by an external magnetic field. Our work thus offers an alternative method to enhance the electrochemical energy storage of materials.
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Synthesis of NiMoO4/3D-rGO Nanocomposite in Alkaline Environments for Supercapacitor Electrodes. CRYSTALS 2019. [DOI: 10.3390/cryst9010031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Although Graphene oxide (GO)-based materials is known as a favorable candidate for supercapacitors, its conductivity needs to be increased. Therefore, this study aimed to investigate the performance of GO-based supercapicitor with new methods. In this work, an ammonia solution has been used to remove the oxygen functional groups of GO. In addition, a facile precipitation method was performed to synthesis a NiMoO4/3D-rGO electrode with purpose of using synergistic effects of rGO conductivity properties as well as NiMoO4 pseudocapacitive behavior. The phase structure, chemical bands and morphology of the synthesized powders were investigated by X-ray diffraction (XRD), Raman spectroscopy, and field emission secondary electron microscopy (FE-SEM). The electrochemical results showed that the NiMoO4/3D-rGO(II) electrode, where ammonia has been used during the synthesis, has a capacitive performance of 932 Fg−1. This is higher capacitance than NiMoO4/3D-rGO(I) without using ammonia. Furthermore, the NiMoO4/3D-rGO(II) electrode exhibited a power density of up to 17.5 kW kg−1 and an energy density of 32.36 Wh kg−1. These results showed that ammonia addition has increased the conductivity of rGO sheets, and thus it can be suggested as a new technique to improve the capacitance.
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Guan X, Liu X, Xu B, Liu X, Kong Z, Song M, Fu A, Li Y, Guo P, Li H. Carbon Wrapped Ni₃S₂ Nanocrystals Anchored on Graphene Sheets as Anode Materials for Lithium-Ion Battery and the Study on Their Capacity Evolution. NANOMATERIALS 2018; 8:nano8100760. [PMID: 30261632 PMCID: PMC6215149 DOI: 10.3390/nano8100760] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/21/2018] [Accepted: 09/22/2018] [Indexed: 01/16/2023]
Abstract
Ni3S2 nanocrystals wrapped by thin carbon layer and anchored on the sheets of reduced graphene oxide (Ni3S2@C/RGO) have been synthesized by a spray-coagulation assisted hydrothermal method and combined with a calcination process. Cellulose, dissolved in Thiourea/NaOH aqueous solution is chosen as carbon sources and mixed with graphene oxide via a spray-coagulation method using graphene suspension as coagulation bath. The resulted cellulose/graphene suspension is utilized as solvent for dissolving of Ni(NO3)2 and then used as raw materials for hydrothermal preparation of the Ni3S2@C/RGO composites. The structure of the composites has been investigated and their electrochemical properties are evaluated as anode material for lithium-ion batteries. The Ni3S2@C/RGO sample exhibits increasing reversible capacities upon cycles and shows a superior rate performance as well. Such kinds of promising performance have been ascribed to the wrapping effect of carbon layer which confines the dislocation of the polycrystals formed upon cycles and the enhanced conductivity as the integration of RGO conductive substrate. Discharge capacities up to 850 and 630 mAh·g−1 at current densities of 200 and 5000 mA·g−1, respectively, are obtained. The evolution of electrochemical performance of the composites with structure variation of the encapsulated Ni3S2 nanocrystals has been revealed by ex-situ TEM and XRD measurements.
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Affiliation(s)
- Xianggang Guan
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Xuehua Liu
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Binghui Xu
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Xiaowei Liu
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Zhen Kong
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Meiyun Song
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Aiping Fu
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Yanhui Li
- College of Electromechanic Engineering, Qingdao University, Qingdao 266071, China.
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Hongliang Li
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China.
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
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