Preparation of self‑supporting Co3S4/ S‑rGO film catalyst for efficient oxygen evolution reaction

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 33권 / 7호
ㆍ저자명 : Liang Chen, Liying Hu, Chenxi Xu, Lanyun Yang, Wei Wang, Junlin Huang, Minjie Zhou, Zhaohui Hou

목차

Preparation of self-supporting Co3S4S-rGO film catalyst for efficient oxygen evolution reaction
Abstract
1 Introduction
2 Experimental
2.1 Sample preparation
3 Results and discussion
4 Conclusion
5 Supplementary Information
Anchor 9
Acknowledgements
References

영어 초록

Exploring cheap and efficient oxygen evolution reaction (OER) catalysts is extremely vital for the commercial application of advanced energy storage and conversion systems. Herein, a self-supporting Co3S4/ S-doped reduced graphene oxide ( Co3S4/S-rGO) film catalyst is successfully prepared by a blade coating coupled with high-temperature annealing strategy, and its morphology, structure and composition are measured and analyzed. It is substantiated that the as-synthesized Co3S4/ S-rGO film possesses unique self-supporting structure, and is composed of uniformly dispersed Co3S4 nanoparticles and highly conductive S-rGO, which benefit the exposure of catalytic sites and electron transfer. By reason of the synergistic effect of the two individual components, the self-supporting Co3S4/ S-rGO film catalyst displays outstanding catalytic performance towards OER. As a consequence, the Co3S4/ S-rGO film catalyst delivers an overpotential of 341 mV at 10 mA cm-2, and the current attenuation rate is only 2.6% after continuous operation for 4 h, verifying excellent catalytic activity and durability. Clearly, our results offers a good example for the construction of high-performance self-supporting carbon-based composite film catalysts for critical electrocatalytic reactions.

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