Ultrathin, Porous CoPS Nanosheets: GO Self-Sacrificing Template Synthesis as Bifunctional Catalysts for Overall Water Splitting

doi:10.1021/acsaem.1c01929

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	Ultrathin, Porous CoPS Nanosheets: GO Self-Sacrificing Template Synthesis as Bifunctional Catalysts for Overall Water Splitting
	Zhao, Wenhua 1; Wu, Niandu 1; Yu, Fan 1; Zhou, Boye 1; Chu, Xueyuan 1; Wei, Zhiqiang2 ; Yang, Shaoguang 1
	2021-09-28
发表期刊	ACS APPLIED ENERGY MATERIALS
ISSN	2574-0962
卷号	4 期号:10 页码:10976-10985
摘要	The exploitation of low-cost, porous, and ultrathin 2D electrocatalysts in the bifunctional electrocatalysis reaction and overall water splitting is a meaningful route to renewable energy technologies. Herein, as efficient bifunctional electrocatalysts toward the water-splitting process, the desirable cobalt phospho-sulfide (CoPS) nanosheets stem from Co2+ cross-linking to form strong coordination bonds with negatively charged oxygen-containing functional groups on a graphene oxide (GO) sacrificial template via electrostatic interactions. The prepared CoPS catalyst exhibits a distinguished electrochemical performance with a low overpotential (eta) of hydrogen evolution reaction (similar to 52 mV) and oxygen evolution reaction (similar to 280.7 mV) at 10 mA cm(-2) and better durability and higher turnover frequencies under alkaline environments. When it was used as the cathode and anode in alkaline media, the CoPS required only 1.62 V to achieve a current density of 10 mA cm(-2), outperforming most of the low-cost bifunctional electrocatalysts reported to date. The bond energy of the P=S bond not only effectively adsorb protons but also suitably weakens the adsorption on the Co-Co bridge site, thereby improving the multifunctional electrocatalysis for water splitting. The excellent performance of porous and ultrathin CoPS nanosheets is conducive to the complete exposure of active sites and facile ion transport kinetics, and they serve as a promising non-precious-metal-based electrocatalysts for the water-splitting reaction.
关键词	overall water splitting bifunctional electrocatalyst CoPS nanosheets graphene oxide sacrificial template
DOI	10.1021/acsaem.1c01929
收录类别	SCIE
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000711236300058
出版者	AMER CHEMICAL SOC
来源库	WOS
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150090
专题	理学院
通讯作者	Yang, Shaoguang
作者单位	1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China; 2.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenhua,Wu, Niandu,Yu, Fan,et al. Ultrathin, Porous CoPS Nanosheets: GO Self-Sacrificing Template Synthesis as Bifunctional Catalysts for Overall Water Splitting[J]. ACS APPLIED ENERGY MATERIALS,2021,4(10):10976-10985.
APA	Zhao, Wenhua.,Wu, Niandu.,Yu, Fan.,Zhou, Boye.,Chu, Xueyuan.,...&Yang, Shaoguang.(2021).Ultrathin, Porous CoPS Nanosheets: GO Self-Sacrificing Template Synthesis as Bifunctional Catalysts for Overall Water Splitting.ACS APPLIED ENERGY MATERIALS,4(10),10976-10985.
MLA	Zhao, Wenhua,et al."Ultrathin, Porous CoPS Nanosheets: GO Self-Sacrificing Template Synthesis as Bifunctional Catalysts for Overall Water Splitting".ACS APPLIED ENERGY MATERIALS 4.10(2021):10976-10985.

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