Affiliation of Author(s):材料科学与技术学院
Journal:CHEMICAL ENGINEERING JOURNAL
Key Words:Ge N-doped carbon foam Interconnected structure Anode Lithium ion battery
Abstract:In this work, we successfully designed and synthesized Ge nanoparticles encapsulated in a carbon matrix and supported by three-dimensional interconnected porous N-doped carbon foam (3D Ge/C-NCF) nanoarchitecture. When applied as an anode material for lithium ion batteries, the obtained composite electrode exhibits high capacity of 878.1 mAh g(-1) at a current density of 0.5 A g(-1) after 150 cycles. Additionally, it also achieves excellent rate capability and cycling stability. The significant improved electrochemical performance of Ge/C-NCF can be attributed to the synergetic effects of the carbon matrix and the N-doped carbon framework: including a highly conductive carbon network and a structure with large porous for mitigates volume changes of Ge nanoparticles. This study of the composite electrode may provide an interesting method to creating efficient and practical electrodes for those that suffer from huge volume expansion for energy storage applications. (C) 2017 Elsevier B.V. All rights reserved.
ISSN No.:1385-8947
Translation or Not:no
Date of Publication:2017-08-15
Co-author:Tong, Zhenkun,Zhang Xiaogang
Correspondence Author:Zhang Xiaogang,fangshan
Date of Publication:2017-08-15