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Amorphous Multi-elements Electrocatalysts with Tunable Bifunctionality toward Overall Water Splitting

文献类型：期刊论文

作者Wang, Xiaomei1,2; Ma, Weiguang1; Ding, Chunmei1; Xu, Zhiqiang1,2; Wang, Hong1,2; Zong, Xu1; Li, Can1
刊名ACS CATALYSIS
出版日期2018-11-01
卷号8期号:11页码:9926-9935
关键词multi-elements electrocatalyst electrodeposition hydrogen evolution oxygen evolution overall water splitting
ISSN号2155-5435
DOI10.1021/acscatal.8601839
通讯作者Zong, Xu(xzong@dicp.ac.cn) ; Li, Can(canli@dicp.ac.cn)
英文摘要Economically producing hydrogen via electrocatalytic water splitting requires highly efficient and low-cost catalysts and scalable synthetic strategies. Herein, we present the preparation of hierarchically structured multi-elements water splitting electrocatalysts consisting of Fe, Co, Ni, S, P, and O with a one-step electrodeposition method. By tuning of the non-metal compositions of the catalysts, the electrochemical performances of the catalysts for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in 1 M KOH can be rationally modified, respectively. Under the optimum conditions, current densities of 100 and 1000 mA cm(-2) were obtained at overpotentials of only 135 and 264 mV on the HER catalyst and 258 and 360 mV on the OER catalyst, respectively. When the best-performing HER and OER catalysts were assembled in a two-electrode system for overall water splitting, a current density of 10 mA cm(-2) could be obtained under a cell voltage of 1.46 V with longterm durability. As far as we know, this is among the lowest voltages ever reported for a two-electrode electrolyzer based upon earth-abundant, elements. Moreover, the catalysts can be facilely assembled on commercially available Ni mesh and demonstrate even higher performance, indicating their great potential for scaled-up water electrolysis. We further demonstrate that S and P play different and pivotal roles in modifying the apparent and intrinsic electrocatalytic activity of the as-prepared amorphous electrocatalysts, therefore pointing out a pathway toward the optimization of multi-elements catalysts.
WOS关键词HYDROGEN-EVOLUTION REACTION ; OXYGEN EVOLUTION ; HIGHLY EFFICIENT ; ALKALINE ELECTROLYTES ; DOUBLE HYDROXIDE ; LOW-COST ; OXIDATION ; CATALYSTS ; NICKEL ; COBALT
资助项目National Natural Science Foundation of China[21573219] ; National Key R&D Program of China[2017YFA0204804] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB17000000] ; CNPC-DICP Joint Research Center ; Young Thousand Talents Program of China
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000449723900003
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CNPC-DICP Joint Research Center ; CNPC-DICP Joint Research Center ; Young Thousand Talents Program of China ; Young Thousand Talents Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CNPC-DICP Joint Research Center ; CNPC-DICP Joint Research Center ; Young Thousand Talents Program of China ; Young Thousand Talents Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CNPC-DICP Joint Research Center ; CNPC-DICP Joint Research Center ; Young Thousand Talents Program of China ; Young Thousand Talents Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CNPC-DICP Joint Research Center ; CNPC-DICP Joint Research Center ; Young Thousand Talents Program of China ; Young Thousand Talents Program of China
源URL[http://cas-ir.dicp.ac.cn/handle/321008/166684]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Zong, Xu; Li, Can
作者单位1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Collaborat Innovat Ctr Chem Energy Mat iChEM, State Key Lab Catalysis,Dalian Inst Chem Phys, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiaomei,Ma, Weiguang,Ding, Chunmei,et al. Amorphous Multi-elements Electrocatalysts with Tunable Bifunctionality toward Overall Water Splitting[J]. ACS CATALYSIS,2018,8(11):9926-9935.
APA Wang, Xiaomei.,Ma, Weiguang.,Ding, Chunmei.,Xu, Zhiqiang.,Wang, Hong.,...&Li, Can.(2018).Amorphous Multi-elements Electrocatalysts with Tunable Bifunctionality toward Overall Water Splitting.ACS CATALYSIS,8(11),9926-9935.
MLA Wang, Xiaomei,et al."Amorphous Multi-elements Electrocatalysts with Tunable Bifunctionality toward Overall Water Splitting".ACS CATALYSIS 8.11(2018):9926-9935.

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来源：大连化学物理研究所

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