期刊
JOURNAL OF ENERGY CHEMISTRY
卷 44, 期 -, 页码 97-105出版社
ELSEVIER
DOI: 10.1016/j.jechem.2019.08.021
关键词
Fe7Se8; Hierarchical structure; Nanorod bundles; Sodium-ion batteries; Oleylamine
资金
- National Natural Science Foundation of China [21871164]
- Natural Science Foundation of Shandong Province [ZR2019MB024]
- Taishan Scholar Project of Shandong Province
Ordered hierarchical architectures are attractive candidates for electrochemical energy storage applications. Herein, a facile self-template strategy is applied to prepare Fe7Se8 architectures with a monolithic structure via a self-synthesized single precursor and subsequent calcination at high temperature. With the support of oleylamine, the precursor is structurally targeted to engineer the Fe7Se8 microstructure, featuring nanorod bundles arranged along the longitudinal direction. Because of their ordered hierarchical structure, the Fe7Se8 nanorod bundles deliver a high reversible capacity of 300 mAh g(-1) at 0.5 A g(-1), along with exceptional rate capability up to 20 A g(-1) and long-term cycle life over 8000 cycles, which represents the highest stability of Fe7Se8 anodes for sodium-ion batteries reported to date. The feasibility of the present strategy to prepare metal selenide structures highlights its promising potential for the rational and effective engineering of electrode materials responsible for the electrochemical performance of energy storage systems. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据