Flexible hybrid capacitors based on transition metal composite electrode

The shortage of fossil energy sources lead to high requirements for the exploration of sustainable energy conversion and storage equipment. Supercapacitor (SC) is a kind of excellent energy storage device due to the high power density and long cycle life. However, the low energy density restricts their further practical application. Therefore, it is extremely important to develop high-performance electrode materials with excellent performances. Transition metal oxides are considered to be promising candidates for supercapacitor electrode materials.

Researchers led by Prof. Xiang Wu at Shenyang University of  Technology (SUT), China, report Co₃O₄@NiMoO₄ nanowire structures grown on porous nickel foam via a two-step hydrothermal method. With conductive nickel foam as the skeleton, it provides high capacitance of electrode materials. When used as cathode material for asymmetric supercapacitors, Co₃O₄@NiMoO₄//activated carbon device shows a high energy density and long cycle stability.

The work entitled “Co₃O₄@NiMoO₄ composite electrode materials for flexible hybrid capacitors” was published on Frontiers of Optoelectronics (May 26, 2022).

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Reference: Yongli Tong, Tengxi Zhang, Yuchen Sun, Xiaowei Wang, Xiang Wu. Co₃O₄@NiMoO₄ composite electrode materials for flexible hybrid capacitors. Front. Optoelectron. 15, 25 (2022). https://doi.org/10.1007/s12200-022-00029-0

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Frontiers of Optoelectronics (FOE) aims at introducing the most recent research results and the cutting edge improvements in the area of photonics and optoelectronics. It is dedicated to be an important information platform for rapid communication and exchange between researchers in the related areas. The journal publishes review articles, research articles, letters, comments, special issues, and so on. The Editors-in-Chief are Academician Qihuang Gong from Peking University and Prof. Xinliang Zhang from Huazhong University of Science and Technology. FOE has been indexed by ESCI, Ei, SCOPUS, DOAJ, CSCD, Source Journals for Chinese Scientific and Technical Papers and Citations, etc. FOE is fully open access since 2022.