• 文献标题:   Hybrid vertical graphene/lithium titanate-CNTs arrays for lithium ion storage with extraordinary performance
  • 文献类型:   Article
  • 作  者:   YAO ZJ, XIA XH, ZHONG Y, WANG YD, ZHANG BW, XIE D, WANG XL, TU JP, HUANG YZ
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS CHEMISTRY A
  • ISSN:   2050-7488 EI 2050-7496
  • 通讯作者地址:   Zhejiang Univ
  • 被引频次:   46
  • DOI:   10.1039/c7ta02511d
  • 出版年:   2017

▎ 摘  要

In the present study, we report a synthetic strategy for the direct fabrication of hybrid vertical graphene/lithiumtitanate-CNTs arrays via atomic layer deposition in combination with chemical vapor deposition. A novel array architecture was formed where active lithium titanate (Li4Ti5O12, LTO) was uniformly sandwiched by a vertical graphene backbone and an interconnected CNTs shell. The hybrid omnibearing conductive network was identified to be an extremely stable porous structure and demonstrated superior ultra-high rate capability (146 mA h g(-1) at 50C and 131mA h g(-1) at 100C) with a capacity of 136mA h g(-1) at 20C after 10 000 cycleswhen used as an electrode in lithiumion batteries. This special electrode construction strategy is expected to provide a new route for the manufacture of electrochemical energy storage with ultra-high rate capability and ultra-stability.