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Dynamic Reversible Evolution of Solid Electrolyte Interface in Nonflammable Triethyl Phosphate Electrolyte Enabling Safe and Stable Potassium-Ion Batteries
Ji, Shunping1; Li, Jielei1; Li, Junfeng1; Song, Chunyan2; Wang, Shuo1; Wang, Kexuan1; Hui, Kwan San3; Zha, Chenyang1; Zheng, Yunshan1; Dinh, Duc Anh4; Chen, Shi1; Zhang, Jintao5; Mai, Wenjie6; Tang, Zikang1; Shao, Zongping7,8; Hui, Kwun Nam1
2022-04
Source PublicationAdvanced Functional Materials
ISSN1616-301X
Abstract

Potassium-ion batteries (PIBs) are a favorable alternative to lithium-ion batteries (LIBs) for the large-scale electrochemical storage devices because of the high natural abundance of potassium resources. However, conventional PIB electrodes usually exhibit low actual capacities and poor cyclic stability due to the large radius of potassium ions (1.39 Å). In addition, the high reactivity of potassium metal raises serious safety concerns. These characteristics seriously inhibit the practical use of PIB electrodes. Here, zinc phosphide composites are rationally designed as PIB anodes for operation in a nonflammable triethyl phosphate (TEP) electrolyte to solve the above-mentioned issues. The optimized zinc phosphide composite with 20 wt% zinc phosphate presents a high specific capacity (571.1 mA h g at 0.1 A g) and excellent cycling performance (484.9 mA h g with the capacity retention of 94.5% after 1000 cycles at 0.5 A g) in the KFSI-TEP electrolyte. XPS depth profile analysis shows that the improved cycling stability of the composite is closely related to the reversible dynamic evolutions and conversions of the sulfur-containing species in the solid electrolyte interphase (SEI) during the charge/discharge process. This dynamic reversible SEI concept may provide a new strategy for the design of superior electrodes for PIBs.

KeywordNon-flammable Electrolytes Potassium-ion Batteries Solid Electrolyte Interfaces Triethyl Phosphate Zinc Phosphide
DOI10.1002/adfm.202200771
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000786526800001
Scopus ID2-s2.0-85128703569
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHui, Kwan San; Chen, Shi; Shao, Zongping; Hui, Kwun Nam
Affiliation1.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, SAR, Taipa, 999078, Macao
2.Analysis and Testing Center, Shenzhen Technology University, Shenzhen, 518118, China
3.School of Engineering, Faculty of Science, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
4.NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, 700000, Viet Nam
5.Key Laboratory for Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
6.Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, China
7.State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
8.WA School of Mines: Minerals, Energy and Chemical Engineering (WASM-MECE), Curtin University, Perth, 6102, Australia
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Ji, Shunping,Li, Jielei,Li, Junfeng,et al. Dynamic Reversible Evolution of Solid Electrolyte Interface in Nonflammable Triethyl Phosphate Electrolyte Enabling Safe and Stable Potassium-Ion Batteries[J]. Advanced Functional Materials,2022.
APA Ji, Shunping,Li, Jielei,Li, Junfeng,Song, Chunyan,Wang, Shuo,Wang, Kexuan,Hui, Kwan San,Zha, Chenyang,Zheng, Yunshan,Dinh, Duc Anh,Chen, Shi,Zhang, Jintao,Mai, Wenjie,Tang, Zikang,Shao, Zongping,&Hui, Kwun Nam.(2022).Dynamic Reversible Evolution of Solid Electrolyte Interface in Nonflammable Triethyl Phosphate Electrolyte Enabling Safe and Stable Potassium-Ion Batteries.Advanced Functional Materials.
MLA Ji, Shunping,et al."Dynamic Reversible Evolution of Solid Electrolyte Interface in Nonflammable Triethyl Phosphate Electrolyte Enabling Safe and Stable Potassium-Ion Batteries".Advanced Functional Materials (2022).
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