3D heterostructured pure and N-Doped Ni3S2/VS2 nanosheets for high efficient overall water splitting

Zhong, Xiongwei1,2; Tang, Jun2; Wang, Jingwei2,4,5; Shao, Mengmeng1; Chai, Jianwei3; Wang, Shuangpeng1; Yang, Ming3; Yang, Ye1; Wang, Ning4,5; Wang, Shijie3; Xu, Baomin2; Pan, Hui1

2018-04-10

10.1016/j.electacta.2018.02.131

ELECTROCHIMICA ACTA   影响因子和分区

0013-4686

1873-3859

Exploring earth-abundant electrocatalysts with high activity and low-cost for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is vital to energy harvesting and storage, such as fuel cell and effective overall water splitting. Herein, novel heterostructures (Ni3S2/VS2) without nitrogen (N) and with N doping are reported as superior electrocatalysts for the OER and HER, respectively. The heterostructure without doping shows enhanced OER performance with an extremely low overpotential (227mV at 10 mA/cm(2)) due to increased active sites and fantastic interfaces as well as unique structure. Moreover, N-doped Ni3S2/VS2 (N-Ni3S2/VS2) shows high electrocatalytic HER performance with a low HER overpotential (151 mV at 10 mA/cm(2)), because the N-doping greatly improves conductivity and increases large amounts of catalytic active sites. Finally, we construct a two-electrode electrolyzer system (Ni3S2/VS2//N-Ni3S2/VS2) and it achieves a current density of 10 mA/cm(2) at a low cell voltage of 1.648 V. Our findings demonstrate that structure design and doping can effectively improve the catalytic activities of nanomaterials for OER and HER. (C) 2018 Elsevier Ltd. All rights reserved.

Heterostructure Vanadium sulfide Nickel sulfide N-doping Over-all water splitting

SCI ; EI

英语

通讯

National Key Research and Development Project funding from the Ministry of Science and Technology of China[2016YFA0202400] ; National Key Research and Development Project funding from the Ministry of Science and Technology of China[2016YFA0202404]

Electrochemistry

Electrochemistry

WOS:000428806700007

PERGAMON-ELSEVIER SCIENCE LTD

20181004859640

Catalyst activity ; Doping (additives) ; Electrocatalysts ; Energy harvesting ; Fuel cells ; Heterojunctions ; Hydrogen storage ; Sulfur compounds ; Vanadium compounds

Gas Fuels:522 ; Energy Conversion Issues:525.5 ; Fuel Cells:702.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Agents and Basic Industrial Chemicals:803

CHEMISTRY

Web of Science

1.Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.ASTAR, IMRE, Innovis, 08-03,2 Fusionopolis Way, Singapore 138634, Singapore
4.Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China
5.Hong Kong Univ Sci & Technol, Ctr Quantum Mat, Hong Kong, Hong Kong, Peoples R China

Zhong, Xiongwei,Tang, Jun,Wang, Jingwei,et al. 3D heterostructured pure and N-Doped Ni3S2/VS2 nanosheets for high efficient overall water splitting[J]. ELECTROCHIMICA ACTA,2018,269:55-61.

Zhong, Xiongwei.,Tang, Jun.,Wang, Jingwei.,Shao, Mengmeng.,Chai, Jianwei.,...&Pan, Hui.(2018).3D heterostructured pure and N-Doped Ni3S2/VS2 nanosheets for high efficient overall water splitting.ELECTROCHIMICA ACTA,269,55-61.

Zhong, Xiongwei,et al."3D heterostructured pure and N-Doped Ni3S2/VS2 nanosheets for high efficient overall water splitting".ELECTROCHIMICA ACTA 269(2018):55-61.