• 文献标题:   Graphene coated La3+/Sc3+ co-doped Li4Ti5O12 anodes for enhanced Li-ion battery performance
  • 文献类型:   Article
  • 作  者:   WEI GD, RAMBO CR, GUO Y, NING ZY, GUO ST, ZHAO M, HUANG Z, ZHANG CM, HE DN
  • 作者关键词:   liion batterie, multilayer graphene, lto anode, lasc codoping
  • 出版物名称:   MATERIALS LETTERS
  • ISSN:   0167-577X EI 1873-4979
  • 通讯作者地址:   Shanghai Jiao Tong Univ
  • 被引频次:   2
  • DOI:   10.1016/j.matlet.2017.01.082
  • 出版年:   2017

▎ 摘  要

This work reports the synthesis of multi-layer graphene-coated, La and Sc co-doped Li4Ti5O12 (LLTSO/G) anodes for Li-ion battery where the co-doped LTO was synthesized via a modified sol-gel method. High resolution transmission electron microscope (HRTEM) analysis revealed that graphene layers occupied the space between these three-dimensional LLTSO particles which provides a convenient transport path for electrons and thus resulted in a great rate electrode capability. The revisable capacity of this LLTSO is 176 mAh g(-1) at 0.5C, after coating LLTSO with graphene the electrode exhibited excellent electrochemical performance, the discharge capacity is 101 mAh g(-1) at 40C, much higher than the uncoated one (85 mAh g(-1) at 40C). LLTSO/G was proved to be a promising high rate electrode material for lithium batteries. (C) 2017 Elsevier B.V. All rights reserved.