Sea anemone-like zinc-cobalt oxysulfides grown on Ni foam as a battery-type electrode with admirable performance |
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| Authors: | Yuqing Kuai Meitang Liu Tianlei Wang Yu Fu Hongwen Ma Qun Jiang Chao Guan Kunran Hu |
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| Institution: | 1.Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology,China University of Geosciences,Beijing,People’s Republic of China |
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| Abstract: | Sea anemone-like zinc-cobalt (Zn-Co) oxysulfides grown on nickel foam were synthesized by a hydrothermal treatment for the first time as a battery-type electrode for hybrid supercapacitors. Such a binder-free sea anemone-like Zn-Co oxysulfide electrode displays improved electrochemical properties, which can be attributed to the unique sea anemone-like morphology and the partly replacement of oxygen with sulfur since sulfur possesses a lower electronegativity. As a result, the Zn-Co oxysulfide electrode exhibits a specific capacity of 645.5 C g?1 (1 A g?1) which is much higher than 386.0 C g?1 of Zn-Co oxide electrode at the same conditions. In addition, the Zn-Co oxysulfide electrode also demonstrates good cycling stability (76.1% capacity retention after 1000 cycles). According to these, the Zn-Co oxysulfide electrode is testified to be a promising faradaic electrode for energy storage. |
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