电池(电)
储能
瓶颈
降级(电信)
离子
制作
材料科学
阴极
化学工程
粒子(生态学)
纳米技术
湿度
电极
化学
计算机科学
电气工程
物理
工程类
气象学
功率(物理)
物理化学
嵌入式系统
病理
有机化学
地质学
替代医学
海洋学
量子力学
医学
作者
Yang Kook Sun,Hong Wang,Dechao Meng,Xiaoqiao Li,Xiao‐Zhen Liao,Haiying Che,Guijia Cui,Fei Yu,Weimin Yang,Linsen Li,Zhenqiang Ma
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2021-03-03
卷期号:4 (3): 2061-2067
被引量:28
标识
DOI:10.1021/acsaem.1c00047
摘要
Sodium-ion batteries (SIBs) hold great promise for low-cost energy storage. Despite the major advances made in the material preparation and battery performance, air instability has become a bottleneck for the storage and electrode fabrication of O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM), but the underlying mechanism remains elusive. Here we discovered that NFM loses Na+ ions during ambient storage and Na2CO3 “fibers” sprout from the particle surface, which caused the performance decay. We further demonstrated a facile resintering strategy to regenerate the NFM in situ. This work highlights the importance of stringent humidity control and provides the basis for designing surface-modification strategies.
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