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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202208951
|2 doi
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|a pubmed24n1171.xml
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|a (DE-627)NLM351500790
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|a (NLM)36639140
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Biao, Jie
|e verfasserin
|4 aut
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|a Inhibiting Formation and Reduction of Li2 CO3 to LiCx at Grain Boundaries in Garnet Electrolytes to Prevent Li Penetration
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 23.03.2023
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|a Date Revised 23.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Poor ion and high electron transport at the grain boundaries (GBs) of ceramic electrolytes are the primary reasons for lithium filament infiltration and short-circuiting of all-solid-state lithium metal batteries (ASLMBs). Herein, it is discovered that Li2 CO3 at the GBs of Li7 La3 Zr2 O12 (LLZO) sheets is reduced to highly electron-conductive LiCx during cycling, resulting in lithium penetration of LLZO. The ionic and electronic conductivity of the GBs within LLZO can be simultaneously tuned using sintered Li3 AlF6 . The generated LiAlO2 (LAO) infusion and F-doping at the GBs of LLZO (LAO-LLZOF) significantly reduce the Li2 CO3 content and broaden the energy bandgap of LLZO, which decreases the electronic conductivity of LAO-LLZOF. LAO forms a 3D continuous ion transport network at the GB that significantly improves the total ionic conductivity. Lithium penetration within LLZO is suppressed and an all-solid-state LiFePO4 /LAO-LLZOF/Li battery stably cycled for 5500 cycles at 3 C. This work reveals the chemistry of Li2 CO3 at the LLZO GBs during cycling, presents a novel lithium penetration mechanism within garnet electrolytes, and provides an innovative method to simultaneously regulate the ion and electron transport at the GBs in garnet electrodes for advanced ASLMBs
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|a Journal Article
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|a LLZO grain boundary
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|a Li2CO3
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|a Lithium penetration mechanism
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|a ion/electron transport
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|a Han, Bing
|e verfasserin
|4 aut
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|a Cao, Yidan
|e verfasserin
|4 aut
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|a Li, Qidong
|e verfasserin
|4 aut
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|a Zhong, Guiming
|e verfasserin
|4 aut
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|a Ma, Jiabin
|e verfasserin
|4 aut
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|a Chen, Likun
|e verfasserin
|4 aut
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|a Yang, Ke
|e verfasserin
|4 aut
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|a Mi, Jinshuo
|e verfasserin
|4 aut
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|a Deng, Yonghong
|e verfasserin
|4 aut
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|a Liu, Ming
|e verfasserin
|4 aut
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|a Lv, Wei
|e verfasserin
|4 aut
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|a Kang, Feiyu
|e verfasserin
|4 aut
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|a He, Yan-Bing
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 12 vom: 13. März, Seite e2208951
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:12
|g day:13
|g month:03
|g pages:e2208951
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|u http://dx.doi.org/10.1002/adma.202208951
|3 Volltext
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