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Highly purified dicobalt phosphide nanodendrites on exfoliated graphene: In situ synthesis and as robust bifunctional electrocatalysts for overall water splitting

文献类型：期刊论文

作者Liu, Hui2,3; Liu, Danye2,3,4; Gu, Minyi1; Zhao, Zenghua2,3; Chen, Dong2,3; Cui, Penglei2,3; Xu, Lin1; Yang, Jun2,3,4,5
刊名MATERIALS TODAY ENERGY
出版日期2019-12-01
卷号14页码:9
关键词Electrocatalyst Cobalt phosphide Hydrogen evolution reaction Oxygen evolution reaction Overall water splitting
ISSN号2468-6069
DOI10.1016/j.mtener.2019.07.007
英文摘要Designing highly active, earth-abundant and robust electrocatalysts with large surface areas, abundant active sites, good electric conductivity, and minimization of gas bubble adhesion operated in the same electrolyte toward overall water splitting remains a grand challenge. Herein, we report an in situ synthesis of dendritic dicobalt phosphide (Co2P) nanostructures with high purity on exfoliated graphene (EG), denoted as Co2P/EG, which show superior performances toward both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The abundant active sites featured by dendritic nanostructures, and fast electron transfer kinetics of EG as well as synergistic effects between active species and substrate contribute to the improved catalytic performances for HER and OER. In specific, for the HER, the CO2P/EG shows excellent activity with a low overpotentials of 163 mV and 157 mV at 10 mA cm(-2) in 0.5 M H2SO4 and 1.0 M KOH, respectively. While for the OER, it also exhibits high efficiency with an overpotential of 260 mV at 10 mA cm(-2) in 1.0 M KOH. More impressively, a Co2P/EG parallel to Co2P/EG two-electrode alkaline electrolyzer affords a current density of 10 mA cm(-2) at a low cell voltage of 1.67 V, along with satisfied stability. An AA dry battery with a nominal voltage of 1.5 V can drive overall water splitting with obvious gas bubble release. Moreover, our synthetic approach might be applied for in situ synthesizing various metal phosphides/EG for electrolysis-based energy conversion. (C) 2019 Elsevier Ltd. All rights reserved.
WOS关键词LAYERED DOUBLE HYDROXIDE ; HIGH-PERFORMANCE ; ELECTRONIC-STRUCTURE ; NANOSHEETS ARRAY ; NICKEL PHOSPHIDE ; NANOWIRE ARRAYS ; NI FOAM ; EFFICIENT ; HYDROGEN ; EVOLUTION
资助项目National Natural Science Foundation of China[21506234] ; National Natural Science Foundation of China[21573240] ; National Natural Science Foundation of China[21706265] ; National Natural Science Foundation of Beijing[2173062] ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences[COM2015A001] ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2017-A-02] ; Natural Science Foundation of Jiangsu Higher Education Institutions of China[16KJB150020] ; Natural Science Foundation of Jiangsu Province[BK20171473] ; 2017 Jurong SME Technology Innovation Project[CX2017006]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000504690500013
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of Beijing ; Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences ; Natural Science Foundation of Jiangsu Higher Education Institutions of China ; Natural Science Foundation of Jiangsu Province ; 2017 Jurong SME Technology Innovation Project
源URL[http://ir.ipe.ac.cn/handle/122111/38489]  
专题中国科学院过程工程研究所
通讯作者Xu, Lin; Yang, Jun
作者单位1.Nanjing Normal Univ, Jiangsu Collaborate Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
5.Zhongke Langfang Inst Proc Engn, Fenghua Rd 1, Langfang 065001, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hui,Liu, Danye,Gu, Minyi,et al. Highly purified dicobalt phosphide nanodendrites on exfoliated graphene: In situ synthesis and as robust bifunctional electrocatalysts for overall water splitting[J]. MATERIALS TODAY ENERGY,2019,14:9.
APA Liu, Hui.,Liu, Danye.,Gu, Minyi.,Zhao, Zenghua.,Chen, Dong.,...&Yang, Jun.(2019).Highly purified dicobalt phosphide nanodendrites on exfoliated graphene: In situ synthesis and as robust bifunctional electrocatalysts for overall water splitting.MATERIALS TODAY ENERGY,14,9.
MLA Liu, Hui,et al."Highly purified dicobalt phosphide nanodendrites on exfoliated graphene: In situ synthesis and as robust bifunctional electrocatalysts for overall water splitting".MATERIALS TODAY ENERGY 14(2019):9.

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