首页|The Contact Interface Engineering of All-Sulfide-Based Solid State Batteries via Infiltrating Dissoluble Sulfide Electrolyte

The Contact Interface Engineering of All-Sulfide-Based Solid State Batteries via Infiltrating Dissoluble Sulfide Electrolyte

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All-solid-state lithium batteries(ASSLBs)based on sulfide solid electrolytes(SEs)are one of the most promising strategies for next-generation energy storage systems and electronic devices.However,the poor chemical/electrochemical stability of sulfide SEs with oxide cathode materials and high interfacial impedance,particularly due to physical contact failure,are the major limiting factors to the development of sulfide SEs in ASSLBs.Herein,the composite cathode of MOF-derived Fe7S8@C and Li6PS5Br fabricated by an infiltration method(IN-Fe7S8)with dissoluble sulfide electrolyte(dissoluble SE)is reported.Dissoluble SE can easily infiltrate the porous sheet-type Fe7S8@C cathode to homogeneously contact with Fe7S8 nanoparticles that are embedded in the surrounding carbon matrixes and form a fast ionic transport network.Benefiting from applying dissoluble SE and Fe7S8@C,the IN-Fe7S8-based cells displayed a reversible capacity of 510 mAh g-1 after 180 cycles at 0.045 mA cm-2 at 30 ℃.This work demonstrates a novel and practical method for the development of high-performance all-sulfide-based solid state batteries.

all-solid-state lithium batteriesinfiltrationionic transportiron sulfidesulfide solid electrolyte

Lei Xi、Yu Li、Dechao Zhang、Zhengbo Liu、Xijun Xu、Jun Liu

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Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials,School of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,China

Guangdong"Pearl River Talents Plan"R&D Program in Key Areas of Guangdong ProvinceGuangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research FoundationNational Natural Science Foundation of China

2017GC0102182020B01010300052020B15151200492021A1515010153NSFC51621001

2023

10.1002/eem2.12461

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(6)
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