聚丙烯腈
碳化
材料科学
锂(药物)
碳纤维
化学工程
纳米颗粒
聚合物
纳米技术
储能
作者
Dong-Hui Yang,Lingjun Kong,Ming Zhong,Jian Zhou,Xian-He Bu
出处
期刊:Small
[Wiley]
日期:2019-01-01
卷期号:15 (3): 1804058-1804058
被引量:25
标识
DOI:10.1002/smll.201804058
摘要
The development of cost-effective and flexible electrodes is demanding in the field of energy storage. Herein, flexible Fex Oy /nitrogen-doped carbon films (Fex Oy /NC-MOG) are prepared by facile electrospinning of Fe-based metal-organic gels (MOGs) followed by high-temperature carbonization. This approach allows the even mixing of fragile coordination polymers with polyacrylonitrile into flexible films while reserving the structural characteristics of coordination polymers. After thermal treatment, Fex Oy /NC-MOG films possess uniformly distributed Fex Oy nanoparticles and larger accessible surface areas than traditional Fex Oy -NC films without MOG. Taking advantage of the unique structure, Fex Oy /NC-MOG exhibits a superior rate performance (449.8 mA h g-1 at 5000 mA g-1 ) and long cycle life (629.3 mA h g-1 after 500 cycles at 1000 mA g-1 ) when used as additive-free anodes in lithium-ion batteries.
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