Nitrogen-doped carbon spheres decorated with CoSx nanoparticles as multifunctional electrocatalysts for rechargeable zn-air battery and overall water splitting

doi:10.1016/j.materresbull.2020.110770

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	Nitrogen-doped carbon spheres decorated with CoSx nanoparticles as multifunctional electrocatalysts for rechargeable zn-air battery and overall water splitting
	Ju, QJ; Ma, RG; Pei, Y; Guo, BB; Liu, Q; Zhang, T; Yang, MH; Wang, JC
	2020-05-01
Source Publication	MATERIALS RESEARCH BULLETIN
ISSN	0025-5408
Subtype	Article
Abstract	Developing non-precious multi-functional electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) to replace noble metal (Pt, Ru, Ir, etc) is one of the most important directions in the field of energy conversion and storage. Herein, we successfully prepared CoSx nanoparticles loaded onto N-doped carbon spheres to form unique CoSx/NCS nanocomposites, showing good trifunctional activities for ORR, OER and HER. As the cathodic electrocatalyst in Zn-air battery, the CoSx/NCS shows a lower charge voltage of 2.1 V and a high power density of 72.7 mW cm(-2) compared to Pt/C. CoSx/NCS also shows potentials in overall water splitting as the OER and HER electrocatalysts. The onset potential and overpotential at 10 mA cm(-2) toward overall water splitting reaches 1.70 V and 1.83 V, respectively. The enhanced activity of CoSx/NCS should be ascribed to the synergistic effects of improved surface hydrophilicity, CoN sites, pyridinic-N species, and Co-S bonds. This study provides a new strategy to synthesize active electrocatalysts with multiple functions in energy conversion and storage.
DOI	10.1016/j.materresbull.2020.110770
WOS Keyword	METAL-FREE ELECTROCATALYST ; HYDROGEN EVOLUTION ; OXYGEN REDUCTION ; MESOPOROUS CARBON ; NANOTUBES ; CATALYST
Language	英语
WOS Research Area	Materials Science
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28102
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Ju, QJ,Ma, RG,Pei, Y,et al. Nitrogen-doped carbon spheres decorated with CoSx nanoparticles as multifunctional electrocatalysts for rechargeable zn-air battery and overall water splitting[J]. MATERIALS RESEARCH BULLETIN,2020.
APA	Ju, QJ.,Ma, RG.,Pei, Y.,Guo, BB.,Liu, Q.,...&Wang, JC.(2020).Nitrogen-doped carbon spheres decorated with CoSx nanoparticles as multifunctional electrocatalysts for rechargeable zn-air battery and overall water splitting.MATERIALS RESEARCH BULLETIN.
MLA	Ju, QJ,et al."Nitrogen-doped carbon spheres decorated with CoSx nanoparticles as multifunctional electrocatalysts for rechargeable zn-air battery and overall water splitting".MATERIALS RESEARCH BULLETIN (2020).

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