摘要
以废铬屑为低成本生物模板,采用高温热处理方法,制备了三种碳纳米纤维束材料(CNB),并利用扫描电子显微镜(SEM)、拉曼光谱、X射线衍射(XRD)、X射线光电子能谱(XPS)、热重分析(TGA)和恒定电流充-放电测试对CNB的形貌、结构和电化学性能进行了分析和评估。结果表明:热处理温度600℃所得的CNB具有较好的电化学性能,在0.2 A/g电流密度下的首次放电比容量可达1064.86 m Ah/g,100次循环后的可逆放电比容量为416.18 m Ah/g,且有较好的倍率性能。
Three types of carbon nanofiber bundle （CNB） were synthesized by high temperature thermal treatment using chrome shavings as the low-cost biotemplate. The morphology, structure and electrochemical performance of the CNB were analyzed by SEM, Raman spectra, XRD, XPS, TGA and constant current charge-discharge electrochemical experiments. We found that the CNB prepared at 600℃ exhibited better electrochemical performances compared with the counterparts prepared at other different temperatures, which provided an initial specific discharge capacity of 1064.86 mAh/g at current density of 0.2 A/g and a reversible discharge capacity of 416.18 mAh/g in the 100th cycle. Pretty good rate capability was still achieved using CNB prepared at 600℃ as the anode materials.
出处
《皮革科学与工程》
CAS
2017年第2期16-21,共6页
Leather Science and Engineering
基金
国家高技术研究发展计划(2011AA06A108)
关键词
废铬屑
热处理
负极材料
电化学性能
chrome shavings, thermal treatment, anode material, electrochemical performance
