锂离子电池铁木基负极材料的电化学性能研究
Electrochemical Properties of Iron-wood-based Anode Materials for Lithium-ion Batteries
刘天天 1吉升升 1崔承珺 2杨世文 1王立勇1
作者信息
- 1. 中北大学能源与动力工程学院 山西 030051
- 2. 中北大学化学与化工学院 山西 030051
- 折叠
摘要
以铁木为原料,经过碳化和石墨化处理制备出具有较好石墨化程度的生物质石墨材料,以其作为锂离子电池负极进行电化学储锂性能研究.研究结果表明,经过 2800℃石墨化处理,该材料的碳层间距为 0.338 nm;拉曼峰值比R值为 0.29;含有大量以 2.24 mm、3.2 nm为中心的介孔.在 0.05 A·g-1 的电流密度下循环 100 次后其可逆容量仍保持在 340.4 mAh·g-1,并且具有优异的倍率性能,该材料表现出优异的循环储锂性能,有望以低成本生物质基石墨负极材料应用于锂离子电池.
Abstract
In this work the ironwood is prepared to be anode material via carbonization and graphitization procedure,which is beneficial to the high degree of graphitization.The experimental results show that after graphitization treatment at 2800℃the interlayer spacing of the prepared material is 0.338 nm,with a Raman peak ratio(R value)of 0.29,and containing a large number of mesopores centered at 2.24 nm and 3.2 nm.It has a reversible capacity of 340.4 mAh·g-1 after 100 cycles at a current density of 0.05 A·g-1,and also has good rate capability,indicating its excellent electrochemical performance.It can be applied potentially as low-cost biomass-based graphite anode material for lithium-ion batteries.
关键词
锂离子电池/碳基材料/电化学性能Key words
Lithium-ion batteries/carbon-based materials/electrochemical performance引用本文复制引用
出版年
2025
NETL
NSTL
万方数据