材料科学
阴极
有机自由基电池
纳米技术
电极
纳米结构
电池(电)
钠
电化学
化学工程
化学
功率(物理)
物理
物理化学
量子力学
工程类
冶金
作者
Fangfang Xing,Chang-Jiu Li,Ling Chen,Jing-Shuang Dang,Xiaoming He
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-10-23
卷期号:17 (21): 21432-21442
被引量:1
标识
DOI:10.1021/acsnano.3c06189
摘要
Organic nanostructured electrodes are very attractive for next-generation sodium-ion batteries. Their great advantages in improved electron and ion transport and more exposed redox-active sites would lead to a higher actual capacity and enhanced rate performance. However, facile and cost-effective methods for the fabrication of nanostructured organic electrodes are still highly challenging and very rare. In this work, we utilize a bioinspired self-assembly strategy to fabricate nanostructured cathodes based on a rationally designed N-hydroxy naphthalene imide sodium salt (NDI-ONa) for high-performance sodium-organic batteries. Such a well-organized nanostructure can greatly enhance both ion and electron transport. When used as cathode for sodium-organic batteries, it provides among the best battery performances, such as high capacity (171 mA h g-1 at 0.05 A g-1), excellent rate performance (153 mA h g-1 at 5.0 A g-1), and ultralong cycling life (93% capacity retention after 20000 cycles at 3.0 A g-1). Even at low temperature or without a conductive additive, it can also perform well. It is believed that self-assembly is a very powerful strategy to construct high-performance nanostructured electrodes.
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