材料科学
阳极
锂(药物)
陶瓷
电极
玻璃陶瓷
纳米晶
电化学
离子
化学工程
复合材料
纳米技术
化学
物理化学
有机化学
内分泌学
工程类
医学
作者
Shujiang Liu,Wenting Tang,Jingyun Ma,Yanfei Zhang,Yuanzheng Yue
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2020-09-04
卷期号:3 (10): 9760-9768
被引量:14
标识
DOI:10.1021/acsaem.0c01357
摘要
We report a cost-effective way to synthesize the lithium silicate nano-glass ceramics for high-performance Li-ion batteries (LIBs). By proper heat treatment on the precursor glass, we succeeded in preparing Li2TiSiO5 glass ceramics, based on which the anode was fabricated. This type of anode exhibits superior electrochemical performances, that is, a specific capacity of about 180 mA h g–1 until 5000 cycles at 5 A g–1. This high cycling stability is attributed to the synergistic effect of both the open network in the glass matrix and the crack-type channels induced by Li2TiSiO5 nanocrystals in the glass matrix. The open network could withstand the volume change and the stress caused by Li+ insertion/extraction, while the nanocrystals could provide efficient pathways for fast ion delivery and electron transport. The present work has a promising potential to develop high-performance electrode materials for LIBs.
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