Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries

doi:10.1016/j.ensm.2020.08.005

	Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries
	Yang, Shuo 1; Li, Chuan 1; Wang, Yanlei 3; Chen, Shimou 3; Cui, Mangwei 1; Bai, Xiaofang 1; Zhi, Chunyi 1,2; Li, Hongfei 1
刊名	ENERGY STORAGE MATERIALS
	2020-12-01
卷号	33 页码:230-238
关键词	Alkaline Zn batteries Bimetallic nickel cobalt phosphide Sulfur doping strategy Suppressed surface passivation Long lifespan
ISSN号	2405-8297
DOI	10.1016/j.ensm.2020.08.005
英文摘要	Bimetallic phosphides may potentially benefit from the synergetic effects of two metallic elements for enhanced performances. For example, a nickel cobalt phosphide (NiCoP), in which Ni promotes the electrochemical activity of the materials while Co can reduce the charge transfer resistance, may potentially achieve remarkable performance in an alkaline aqueous zinc battery (AZB). However, the main challenge of bimetallic phosphides lies in the unsatisfactory electrochemical stability caused by their easy oxidization. Here we found sulfur-doping to bimetallic nickel cobalt phosphide (S-NiCoP) can effectively get its surface passivation suppressed. As a result, the S-NiCoP electrode exhibits a remarkable area specific capacity (1.32 mAh cm(-2)) and an ultra-long lifespan (capacity retention of 160% after 8000 cycles) in an AZB. The reaction mechanism is further revealed to be a reversible redox reaction from NiCoP to NiPxOH and CoP1-xOH. Furthermore, a quasi-solid-state S-NiCoP//Zn battery is fabricated. It performs well under various conditions (bending, washing, cutting) and delivers high energy density (21.5 mW h cm(-3)) and power density (336.84 mW cm(-3)). This work provides a general approach to stabilize bimetallic phosphides and opens a door to utilize the synergetic effects of various bimetallic phosphides for aqueous batteries.
资助项目	Guangdong Basic and Applied Basic Research Foundation[2019A1515011819] ; GRF Scheme[N_CityU11305218]
WOS关键词	ION BATTERY ; HIGH-CAPACITY ; NANOSHEETS ; EFFICIENT ; NANOCRYSTALS ; ELECTRODES ; CATHODE ; ENERGY
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000598784400006
资助机构	Guangdong Basic and Applied Basic Research Foundation ; GRF Scheme
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42869]
专题	中国科学院过程工程研究所
通讯作者	Zhi, Chunyi
作者单位	1.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 2.City Univ Hong Kong, Dept Mat Sci & Engn, 83 Tat Chee Ave, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shuo,Li, Chuan,Wang, Yanlei,et al. Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries[J]. ENERGY STORAGE MATERIALS,2020,33:230-238.
APA	Yang, Shuo.,Li, Chuan.,Wang, Yanlei.,Chen, Shimou.,Cui, Mangwei.,...&Li, Hongfei.(2020).Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries.ENERGY STORAGE MATERIALS,33,230-238.
MLA	Yang, Shuo,et al."Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries".ENERGY STORAGE MATERIALS 33(2020):230-238.