副教授 博士生导师 硕士生导师
任职 : 辽宁省能源材料及器件重点实验室副主任
性别: 男
毕业院校: 大连理工大学
学位: 博士
所在单位: 材料科学与工程学院
学科: 材料物理与化学. 材料表面工程
办公地点: 新三束4#楼311室
联系方式: 0411-84706661-101
电子邮箱: aimin@dlut.edu.cn
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论文类型: 期刊论文
发表时间: 2017-01-01
发表刊物: NANO ENERGY
收录刊物: SCIE、EI、ESI高被引论文
卷号: 31
页面范围: 74-83
ISSN号: 2211-2855
关键字: Transition metal nitride; Core-shell nanoparticles; Electrochemical performance; Anode; Li-ion battery
摘要: Carbon-constraint Fe3N nanoparticles (Fe3N@C) with a unique core-shell structure are successfully realized through a facile 2-step process: fabricating Fe@C core-shell nanoparticles by DC arc-discharge method and subsequently converting them into Fe3N@C through chemical nitriding reactions. A series of technological conditions are carried out to manipulate the core components and the shell structure. Owing to the protection of carbon shell, the nanoparticles own clear morphology and fine dispersion without distinct sintering. The Fe3N@C nanoparticles are applied as the anode material for lithium-ion batteries and exhibit high electric capacity in long-term cyclic charge/discharge process. Their excellent performance comes from the electrochemical lithiation/delithiation reactivity of the Fe3N core, while stable nanostructure of the electrodes sustained in the long cycles benefits from the constraint of carbon shell mostly.