Co‑doped amorphous MoSx for efficient hydrogen evolution reaction in acid condition
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 33권 / 5호
ㆍ저자명 : Lang Gan, Jincheng Liu, Yanjie Ren, Zhongyi Xiong, Kang Chen
ㆍ저자명 : Lang Gan, Jincheng Liu, Yanjie Ren, Zhongyi Xiong, Kang Chen
목차
Co-doped amorphous MoSx for efficient hydrogen evolution reaction in acid conditionAbstract
1 Introduction
2 Experimental
2.1 Materials
2.2 Synthesis of ZIF-67
2.3 Synthesis of CoMoSx NPs
2.4 Synthesis of CoMoSx
2.5 Synthesis of MoSx
2.6 Characterization
2.7 Preparation of working electrode
2.8 Electrochemical measurements
3 Results and discussion
3.1 Micromorphology characterization of CoMoSx NPs
3.2 Composition characterization of CoMoSx NPs
3.3 BET surface area characterization of CoMoSx NPs
3.4 Elemental composition and valence characterization of CoMoSx NPs
3.5 Electrochemical characterization of CoMoSx NPs
4 Conclusions
Acknowledgements
References
영어 초록
Amorphous molybdenum sulfide ( MoSx) has been regarded as a promising hydrogen evolution reaction (HER) catalyst due to its mild preparation conditions and low-cost precursor materials. In this work, we report a simple strategy combining the growth of amorphous MoSx on the surface of metal organic frameworks (ZIF-67) and annealing treatment to prepare Co-doped MoSx nanopolyhedrons (denoted as CoMoSx NPs). The CoMoSx NPs exhibit excellent HER activity in acid condition with an overpotential of 188 mV at a current density of 10 mA cm− 2 (η10), and a relatively stable overpotential after 2000 cyclic voltammetry (CV) cycles testing. The excellent HER performance of the CoMoSx NPs can be attributed to the doping of Co element adjust the electronic structure and increase the conductivity of catalyst, and the nanopolyhedrons structure which can expose more active sites for HER electrocatalytic. This study offers a low-cost and simple strategy to prepare high-activity HER catalyst, which holds great promises in developing advanced electrocatalysts for energy storage.참고 자료
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