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Suppressing surface passivation of bimetallic phosphide by sulfur for long-life alkaline aqueous zinc batteries
Yang, Shuo1; Li, Chuan1; Wang, Yanlei3; Chen, Shimou3; Cui, Mangwei1; Bai, Xiaofang1; Zhi, Chunyi1,2; Li, Hongfei1
2020-12-01
Source PublicationENERGY STORAGE MATERIALS
ISSN2405-8297
Volume33Pages:230-238
AbstractBimetallic 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.
KeywordAlkaline Zn batteries Bimetallic nickel cobalt phosphide Sulfur doping strategy Suppressed surface passivation Long lifespan
DOI10.1016/j.ensm.2020.08.005
Language英语
WOS KeywordION BATTERY ; HIGH-CAPACITY ; NANOSHEETS ; EFFICIENT ; NANOCRYSTALS ; ELECTRODES ; CATHODE ; ENERGY
Funding ProjectGuangdong Basic and Applied Basic Research Foundation[2019A1515011819] ; GRF Scheme[N_CityU11305218]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationGuangdong Basic and Applied Basic Research Foundation ; GRF Scheme
WOS IDWOS:000598784400006
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42870
Collection中国科学院过程工程研究所
Corresponding AuthorZhi, Chunyi
Affiliation1.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
Recommended Citation
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.
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