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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 PublicationMATERIALS RESEARCH BULLETIN
ISSN0025-5408
SubtypeArticle
AbstractDeveloping 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.
DOI10.1016/j.materresbull.2020.110770
WOS KeywordMETAL-FREE ELECTROCATALYST ; HYDROGEN EVOLUTION ; OXYGEN REDUCTION ; MESOPOROUS CARBON ; NANOTUBES ; CATALYST
Language英语
WOS Research AreaMaterials Science
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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