Статья

In Situ Electrodeposition of Cobalt Sulfide Nanosheet Arrays on Carbon Cloth as a Highly Efficient Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions

Bin LiuState Key Laboratory of Metal Matrix Composites, Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaShengxiang QuKey Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaYue KouKey Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaZhi LiuState Key Laboratory of Metal Matrix Composites, Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaXu ChenState Key Laboratory of Metal Matrix Composites, Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaYating WuState Key Laboratory of Metal Matrix Composites, Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaXiaopeng HanTianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaYida DengTianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaWenbin HuKey Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) and Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaCheng ZhongKey Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education) and Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China

2018en

ABI

Аннотация

As one of the advanced cobalt-based materials, cobalt sulfides with novel architecture have attracted huge interest due to the low cost, easy availability, and promising bifunctional activity for both the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), which is essential for next-generation energy storage devices. Herein, we demonstrated a facile and clean electrochemical technique to directly synthesize CoS nanosheets with high purity onto the surface of carbon cloth, and a quick thermal treatment was performed to further improve the catalytic performance (CoS-A). This novel electrochemical technique avoids the use of the binder, surfactant, and other organic additives, which may cause poor electric conductivity as well as undesirable surface wettability, exhibiting great potential of the large-scale applications. The obtained CoS-A exhibits a superior electrocatalytic performance for the OER and ORR, with a high ORR current density (−1.51 mA cm–2 at 0.2 V), considerable OER current density (148 mA cm–2 at 1.9 V), and excellent durability in continuous measurement for over 12 h. The approach offers a powerful yet simple method to control the phase, composition, and morphology of a highly active CoS catalyst, which provides a new idea for the design of high-performance catalysts.

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Идентификаторы

DOI: 10.1021/acsami.8b10645

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar