Proceedings of the 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics

Highly Stable Mesoporous Ge@C Sphere Anodes for Lithium-ion Batteries

Authors
Chen Cheng, Jing Xu, Kai Xie
Corresponding Author
Chen Cheng
Available Online August 2016.
DOI
10.2991/emcpe-16.2016.104How to use a DOI?
Keywords
highly stable; mesoporous; germanium; anode; lithium-ion batteries
Abstract

The Mesoporous Ge@C sphere has been designed via a modified St”ber method and an in-situ solution deposition. Compared with the pure Ge nanoparticles, the as-synthesized Mesoporous Ge@C sphere nanocomposites show much better cycling stability and rate capability. That as-prepared anode material can maintain a reversible capacity of 708.8mAhg-1 after 200 cycles at a rate of 0.2C, and even at 5C, it also exhibits a high discharge capacity of ~522.4mAhg-1. The superior comprehensive electrochemical performance of the electrode is ascribed to the synergic effects of the porous structure and hollow carbon sphere, which can effectively alleviate the structural strain and suppress large volume changes, additionally, can reduce electrolyte diffusion path length beneficial to allow rapid electron transportation and let more Li+ flux across the interface.

Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics
Series
Advances in Engineering Research
Publication Date
August 2016
ISBN
978-94-6252-197-1
ISSN
2352-5401
DOI
10.2991/emcpe-16.2016.104How to use a DOI?
Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Chen Cheng
AU  - Jing Xu
AU  - Kai Xie
PY  - 2016/08
DA  - 2016/08
TI  - Highly Stable Mesoporous Ge@C Sphere Anodes for Lithium-ion Batteries
BT  - Proceedings of the 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/emcpe-16.2016.104
DO  - 10.2991/emcpe-16.2016.104
ID  - Cheng2016/08
ER  -