电解质
陶瓷
锂(药物)
材料科学
离子运输机
离子
电化学
离子液体
化学工程
电极
无机化学
化学
复合材料
物理化学
有机化学
催化作用
工程类
内分泌学
医学
作者
Qiang Cai,Likun Chen,Zipei Wan,Jie Biao,Guiming Zhong,Xue Li,Lu Yang,Jiabin Ma,Wei Lv,Fuzeng Ren,Hongqi wang,Yong Yang,Feiyu Kang,Yan‐Bing He
标识
DOI:10.1016/j.scib.2022.01.026
摘要
Ceramic electrolytes are important in ceramic-liquid hybrid electrolytes (CLHEs), which can effectively solve the interfacial issues between the electrolyte and electrodes in solid-state batteries and provide a highly efficient Li-ion transfer for solid-liquid Li metal batteries. Understanding the ionic transport mechanisms in CLHEs and the corresponding role of ceramic electrolytes is crucial for a rational design strategy. Herein, the Li-ion transfer in the ceramic electrolytes of CLHEs was confirmed by tracking the 6Li and 7Li substitution behavior through solid-state nuclear magnetic resonance spectroscopy. The ceramic and liquid electrolytes simultaneously participate in Li-ion transport to achieve highly efficient Li-ion transfer in CLHEs. A spontaneous Li-ion exchange was also observed between ceramic and liquid electrolytes, which serves as a bridge that connects the ceramic and liquid electrolytes, thereby greatly strengthening the continuity of Li-ion pathways in CLHEs and improving the kinetics of Li-ion transfer. The importance of an abundant solid-liquid interface for CLHEs was further verified by the enhanced electrochemical performance in LiFePO4/Li and LiNi0.8Co0.1Mn0.1O2/Li batteries from the generated interface. This work provides a clear understanding of the Li-ion transport pathway in CLHEs that serves as a basis to build a universal Li-ion transport model of CLHEs.
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