通过原子层沉积在石墨烯上制备非晶态氧化钒涂层用于稳定的高能锂离子负极

Amorphous vanadium oxide coating on graphene by atomic layer deposition for stable high energy lithium ion anodes.

作者信息

Sun Xiang, Zhou Changgong, Xie Ming, Hu Tao, Sun Hongtao, Xin Guoqing, Wang Gongkai, George Steven M, Lian Jie

机构信息

Department of Mechanical, Aerospace & Nuclear Engineering, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA.

出版信息

Chem Commun (Camb). 2014 Sep 21;50(73):10703-6. doi: 10.1039/c4cc04580g. Epub 2014 Jul 31.

DOI:10.1039/c4cc04580g

PMID:25079002

Abstract

Uniform amorphous vanadium oxide films were coated on graphene via atomic layer deposition and the nano-composite displays an exceptional capacity of ~900 mA h g(-1) at 200 mAg(-1) with an excellent capacity retention at 1 A g(-1) after 200 cycles. The capacity contribution (1161 mA h g(-1)) from vanadium oxide only almost reaches its theoretical value.

摘要

通过原子层沉积法将均匀的非晶态氧化钒薄膜涂覆在石墨烯上，这种纳米复合材料在200 mAg⁻¹ 时表现出约900 mA h g⁻¹ 的优异容量，在1 A g⁻¹ 下循环200次后仍具有出色的容量保持率。仅氧化钒的容量贡献（1161 mA h g⁻¹）几乎达到其理论值。