锂(药物)
材料科学
高能
固态
能量密度
纳米技术
工艺工程
工程物理
工程类
医学
内分泌学
作者
Yu Wu,Yuan Liu,Xuning Feng,Zhuang Ma,Xu Xing,Dongsheng Ren,Xiao Han,Yalun Li,Languang Lu,Li Wang,Xiangming He,Minggao Ouyang
出处
期刊:PubMed
日期:2024-04-06
卷期号:: e2400600-e2400600
标识
DOI:10.1002/advs.202400600
摘要
With the electrochemical performance of batteries approaching the bottleneck gradually, it is increasingly urgent to solve the safety issue. Herein, all-in-one strategy is ingeniously developed to design smart, safe, and simple (3S) practical pouch-type LiNi0.8Co0.1Mn0.1O2||Graphite@SiO (NCM811||Gr@SiO) cell, taking full advantage of liquid and solid-state electrolytes. Even under the harsh thermal abuse and high voltage condition (100 °C, 3-4.5 V), the pouch-type 3S NCM811||Gr@SiO cell can present superior capacity retention of 84.6% after 250 cycles (based pouch cell: 47.8% after 250 cycles). More surprisingly, the designed 3S NCM811||Gr@SiO cell can efficiently improve self-generated heat T1 by 45 °C, increase TR triggering temperature T2 by 40 °C, and decrease the TR highest T3 by 118 °C. These superior electrochemical and safety performances of practical 3S pouch-type cells are attributed to the robust and stable anion-induced electrode-electrolyte interphases and local solid-state electrolyte protection layer. All the fundamental findings break the conventional battery design guidelines and open up a new direction to develop practical high-performance batteries.
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