首页|Vinyltrimethylsilane as a novel electrolyte additive for improving interfacial stability of Li-rich cathode working in high voltage

Vinyltrimethylsilane as a novel electrolyte additive for improving interfacial stability of Li-rich cathode working in high voltage

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Boosting the interfacial stability between electrolyte and Li-rich cathode material at high operating volt-age is vital important to enhance the cycling stability of Li-rich cathode materials for high-performance Li-ion batteries.In this work,vinyltrimethylsilane as a new type of organic silicon electrolyte additive is studied to address the interfacial instability of Li-rich cathode material at high operating voltage.The cells using vinyltrimethylsilane additive shows the high capacity retention of 73.9％after 300 cycles at 1 C,whereas the cells without this kind of additive only have the capacity retention of 58.9％.The im-provement of stability is mainly attributed to the additive helping to form a more stable surface film for Li-rich cathode material,thus avoiding direct contact between the electrolyte and the cathode material,slowing down the dissolution of metal ions and the decomposition of the electrolyte under high oper-ating voltage.Our findings in this work shed some light on the design of stable cycling performance of Li-rich cathode toward advanced Li-ion batteries.

VinyltrimethylsilaneElectrolyte additiveLi-rich cathodeInterfacial stabilityCapacity retention

Bing Jiang、Hao Li、Bi Luo、Lehao Liu、Lihua Chu、Qiaobao Zhang、Meicheng Li

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State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,School of New Energy,North China Electric Power University,Beijing 102206,China

State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Materials,Xiamen University,Xiamen 361005,China

State Key Laboratory of Alternate Electrical Power System with Renewable Energy SourcesState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金北京市科技计划北京市自然科学基金北京市自然科学基金河北省自然科学基金Huaneng Group Headquarters Science and Technology ProjectStrategic Research Key Project of Science and Technology Commission of the Ministry of Education,China Postdoctoral Science Foun中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项NCEPU"Double First-Class"ProgramState Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources

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2024

10.1016/j.cclet.2023.108649

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(2)
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