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In Situ Construction of a LiF-Enriched Interfacial Modification Layer for Stable All-Solid-State Batteries.
Jiao, Tianpeng; Xia, Meng; Chen, Zirong; Zou, Yue; Liu, Gaopan; Fu, Ang; Chen, Libao; Gong, Zhengliang; Yang, Yong; Zheng, Jianming.
  • Jiao T; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Xia M; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Chen Z; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Zou Y; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Liu G; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Fu A; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Chen L; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China.
  • Gong Z; College of Energy, Xiamen University, Xiamen 361005, China.
  • Yang Y; State Key Laboratory for Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Zheng J; Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Xiamen University, Xiamen 361005, China.
ACS Appl Mater Interfaces ; 14(26): 29878-29885, 2022 Jul 06.
Article en En | MEDLINE | ID: mdl-35749281
ABSTRACT
All-solid-state batteries (ASSBs), particularly based on sulfide solid-state electrolytes (SSEs), are expected to meet the requirements of high-energy-density energy storage. However, the unstable interface between the ceramic pellets and lithium (Li) metal can induce unconstrained Li-dendrite growth with safety concerns. Herein, we design a carbon fluoride-silver (CFx-Ag) composite to modify the SSEs. As lithium fluoride (LiF) nanocrystals can be in situ formed through electrochemical reactions, this LiF-enriched modification layer with high surface energy can more effectively suppress Li dendrite penetration and interfacial reactions between the SSEs and anode. Remarkably, the all-solid-state symmetric cells using a lithium-boron alloy (LiB) anode can stably work to above 2,500 h under 0.5 mA cm-2 and 2 mAh cm-2 at 60 °C without shorting. A modified LiB||LiNi0.6Mn0.2Co0.2O2 (NMC622) full cell also demonstrates an improved capacity retention and high Coulombic efficiency (99.9%) over 500 cycles. This work provides an advanced solid-state interface architecture to address Li-dendrite issues of ASSBs.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article