电化学
材料科学
电极
基质(水族馆)
碳纤维
化学工程
纳米结构
离子
纳米技术
复合材料
化学
有机化学
复合数
工程类
地质学
物理化学
海洋学
作者
Xudong Ma,Jiuyang Xia,Xuehang Wu,Zhiyi Pan,Pei Kang Shen
出处
期刊:Carbon
[Elsevier BV]
日期:2019-02-04
卷期号:146: 78-87
被引量:76
标识
DOI:10.1016/j.carbon.2019.02.004
摘要
The electrochemical reversibility of maricite NaFePO4 is highly dependent on the rational design of the nanostructure. We propose, for the first time, an effective strategy of applying an acid-etched carbon cloth (eCC) as the substrate to be loaded with NaFePO4@C and significantly enhance the electrochemical activity of the maricite. The electrochemical test results show that the NaFePO4@C loaded on eCC exhibits a much higher reversible capacity (142 mAh g−1 at 0.1 C) than that (107 mAh g−1 at 0.1 C) of the material loaded on an Al current collector. Moreover, compared to that of the untreated carbon cloth (CC), NaFePO4@C loaded on eCC shows a superior rate performance and ultralong cycling lifetime at high mass loading levels. The excellent electrochemical performance of the NaFePO4@C-eCC electrode benefits from the regular grooves on the surface of the eCC, which provide a significantly larger surface area that is favorable to NaFePO4@C strongly and uniformly binding onto the carbon fibers. The self-supporting electrode configuration, that is, without the addition of an inactive binder and conductive additives, facilitates fast ion/electronic transport and reduces the aggregation of the NaFePO4@C particles. This work is expected to provide a new route for achieving high electrochemical activity in NaFePO4.
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