首页|O-doping strategy enabling enhanced chemical/electrochemical stability of Li3InCl6 for superior solid-state battery performance

O-doping strategy enabling enhanced chemical/electrochemical stability of Li3InCl6 for superior solid-state battery performance

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Solid-state electrolytes with high oxidation stability are crucial for achieving high power density all-solid-state lithium batteries.Halide electrolytes are promising candidates due to their outstanding com-patibility with cathode materials and high Li+conductivity.However,the electrochemical stability of chloride electrolytes is still limited,leaving them unsuitable for ultrahigh voltage operation.Besides,chemical compatibility issue between sulfide and halide electrolytes affects the electrochemical perfor-mance of all-solid-state batteries.Herein,Li-ion conductor Li3+xInCl6-xOx is designed to address these challenges.Li3.25lnCl5.75O0.25 shows a Li-ion conductivity of 0.90 mS cm-1 at room temperature,a high onset oxidation voltage of 3.84 V,fewer by-products at ultrahigh operation voltage,and good chemical compatibility with Li5.5PS4.5Cl1.5.The Li3.25InCl5.75O0.25@LiNi0.7Co0.1Mn0.2O2-Li3.25InCl5.75O0.25-VGCF/Li3.25InCl5.75O0.25/Li5.5PS4.5Cl1.5/Li-In battery delivers good electrochemical performances at high operat-ing voltage.This work provides a simple,economical,and effective strategy for designing high-voltage all-solid-state electrolytes.

Li3lnCl6O dopingWide electrochemical windowChemical stabilityInterfacial stabilitySuperior electrochemical performance

Qiyue Luo、Chen Liu、Lin Li、Ziling Jiang、Jie Yang、Shaoqing Chen、Xia Chen、Long Zhang、Shijie Cheng、Chuang Yu

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State Key Laboratory of Advanced Electromagnetic Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China

School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China

College of Energy,Soochow Institute for Energy and Materials Innovations,Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies,Soochow University,Suzhou 215006,Jiangsu,China

College of Physics and Energy,Fujian Normal University,Fuzhou 350117,Fujian,China

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2024

10.1016/j.jechem.2024.07.058

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.99(12)