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Tailorable surface sulfur chemistry of mesoporous Ni3S2 particles for efficient oxygen evolution

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dc.title Tailorable surface sulfur chemistry of mesoporous Ni3S2 particles for efficient oxygen evolution en
dc.contributor.author Zhang, Haoxuan
dc.contributor.author Jiang, Hao
dc.contributor.author Hu, Yanjie
dc.contributor.author Li, Yuhang
dc.contributor.author Xu, Qiucheng
dc.contributor.author Sáha, Petr
dc.contributor.author Li, Chunzhong
dc.relation.ispartof Journal of Materials Chemistry A
dc.identifier.issn 2050-7488 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2019
utb.relation.volume 7
utb.relation.issue 13
dc.citation.spage 7548
dc.citation.epage 7552
dc.type article
dc.language.iso en
dc.publisher Royal Society of Chemistry
dc.identifier.doi 10.1039/c9ta00646j
dc.relation.uri https://pubs.rsc.org/en/content/articlelanding/2019/ta/c9ta00646j#!divAbstract
dc.description.abstract Boosting the intrinsic activity of electrocatalysts is pivotal in enhancing the oxygen evolution reaction (OER) at the source. Herein, we synthesize a mesoporous Ni 3 S 2 particle electrocatalyst on Ni foam that has appropriate surface sulfur chemistry and demonstrates excellent catalytic activity as well as rapid reaction kinetics. The optimized Ni 3 S 2 electrocatalyst shows ultralow overpotentials of 213 and 283 mV at 10 and 100 mA cm −2 , respectively, with a very low Tafel slope of 45 mV dec −1 in alkaline media. The ECSA normalized current density is 1.1 mA cm −2 at an overpotential of 270 mV, nearly three times higher than that of pristine Ni 3 S 2 (0.4 mA cm −2 ). It has been observed that the sulfur-engineered Ni 3 S 2 electrocatalyst can promote more Ni 3+ generation with a significant shift of the Ni center binding energy compared with pristine Ni 3 S 2 during the OER. The findings propose a facile tactic to improve the intrinsic OER activity for water splitting by optimizing the surface sulfur chemistry of metal sulfide-based electrocatalysts. © The Royal Society of Chemistry. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1008612
utb.identifier.scopus 2-s2.0-85063501561
utb.identifier.wok 000463819400024
utb.identifier.coden JMCAE
utb.source j-scopus
dc.date.accessioned 2019-07-08T11:59:58Z
dc.date.available 2019-07-08T11:59:58Z
dc.description.sponsorship National Natural Science Foundation of China [21838003, 21808061, 91534122]; Social Development Program of Shanghai [17DZ1200900]; Shanghai Scientific and Technological Innovation Project [18JC1410600, 18DZ2252400]; Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning; Fundamental Research Funds for the Central Universities [222201718002]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Sáha, Petr
utb.wos.affiliation [Zhang, Haoxuan; Jiang, Hao; Hu, Yanjie; Li, Yuhang; Xu, Qiucheng; Li, Chunzhong] East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China; [Petr, Saha] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Trida T Bati 5678, Zlin 76001, Czech Republic
utb.scopus.affiliation Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida T. Bati 5678, Zlin, 760 01, Czech Republic
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