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Ultrathin, Compacted Gel Polymer Electrolytes Enable High-Energy and Stable-Cycling 4 V Lithium-Metal Batteries
Song, SF; Tan, XJ; Zhai, YF; Yang, GM; Yao, JY; Li, S; Hu, N; Qi, XL; Li, R; Ma, WD; Wen, ZY; Lu, L
2020-09-01
Source PublicationCHEMELECTROCHEM
ISSN2196-0216
Issue17Pages:3656
SubtypeArticle
AbstractBatteries with lithium metal as anodes and gel polymer membranes as electrolytes are promising, because of their high energy densities and improved safety. To achieve metal battery energy densities that are comparable to liquid-electrolyte batteries, ultrathin and lightweight gel electrolytes with wide electrochemical stability windows are desired. However, it is challenging to make gel polymer electrolyte membranes with comparable thicknesses to commercial polymer electrolyte separators (<20 mu m), because of the porous configuration and increased risk of short-circuiting cells. Here, we report on a 10 mu m-thick compacted gel polymer electrolyte (TCGPE), demonstrated to have a robust chemical interaction between SiO(2)nanoparticles and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) chains that are activated via an in situ sol-gel reaction. The developed TCGPE exhibits an extremely wide electrochemical stability window of 5.5 V vs. Li/Li(+)and prevents the batteries from short-circuiting even at a high current density of 1.0 mA cm(-2). Moreover, Li/TCGPE/LiNi(0.5)Co(0.2)Mn(0.3)O(2)shows an excellent capacity retention of 99.8 % after 180 cycles at 1 C rate.
DOI10.1002/celc.202000955
WOS KeywordHIGH IONIC-CONDUCTIVITY ; POLY(VINYLIDENE FLUORIDE) ; ELECTROCHEMICAL PROPERTIES ; SOLID-ELECTROLYTE ; SITU SIO2 ; COMPOSITE ; MEMBRANE ; FLUORIDE-CO-HEXAFLUOROPROPYLENE) ; ENHANCEMENT ; DESIGN
Language英语
WOS Research AreaElectrochemistry
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27786
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Song, SF,Tan, XJ,Zhai, YF,et al. Ultrathin, Compacted Gel Polymer Electrolytes Enable High-Energy and Stable-Cycling 4 V Lithium-Metal Batteries[J]. CHEMELECTROCHEM,2020(17):3656.
APA Song, SF.,Tan, XJ.,Zhai, YF.,Yang, GM.,Yao, JY.,...&Lu, L.(2020).Ultrathin, Compacted Gel Polymer Electrolytes Enable High-Energy and Stable-Cycling 4 V Lithium-Metal Batteries.CHEMELECTROCHEM(17),3656.
MLA Song, SF,et al."Ultrathin, Compacted Gel Polymer Electrolytes Enable High-Energy and Stable-Cycling 4 V Lithium-Metal Batteries".CHEMELECTROCHEM .17(2020):3656.
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