Lithium germanate (Li2GeO3): a high-performance anode material for lithium-ion batteries

Rahman, Md Mokhlesur, Sultana, Irin, Yang, Tianyu, Chen, Zhiqiang, Sharma, Neeraj, Glushenkov, Alexey M. and Chen, Ying 2016, Lithium germanate (Li2GeO3): a high-performance anode material for lithium-ion batteries, Angewandte chemie - international edition, vol. 55, no. 52, pp. 16059-16063, doi: 10.1002/anie.201609343.

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Title Lithium germanate (Li2GeO3): a high-performance anode material for lithium-ion batteries
Formatted title Lithium germanate (Li2GeO3): a high-performance anode material for lithium-ion batteries
Author(s) Rahman, Md MokhlesurORCID iD for Rahman, Md Mokhlesur
Sultana, Irin
Yang, Tianyu
Chen, ZhiqiangORCID iD for Chen, Zhiqiang
Sharma, Neeraj
Glushenkov, Alexey M.
Chen, YingORCID iD for Chen, Ying
Journal name Angewandte chemie - international edition
Volume number 55
Issue number 52
Start page 16059
End page 16063
Total pages 5
Publisher Wiley-VCH
Place of publication Weinheim, Germany
Publication date 2016-12-23
ISSN 1433-7851
Keyword(s) anode
lithium-ion batteries
porous clusters
stable charge capacity
Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Summary A simple, cost-effective, and easily scalable molten salt method for the preparation of Li2GeO3 as a new type of high-performance anode for lithium-ion batteries is reported. The Li2GeO3 exhibits a unique porous architecture consisting of micrometer-sized clusters (secondary particles) composed of numerous nanoparticles (primary particles) and can be used directly without further carbon coating which is a common exercise for most electrode materials. The new anode displays superior cycling stability with a retained charge capacity of 725 mAh g-1 after 300 cycles at 50 mA g-1 . The electrode also offers excellent rate capability with a capacity recovery of 810 mAh g-1 (94 % retention) after 35 cycles of ascending steps of current in the range of 25-800 mA g-1  and finally back to 25 mA g-1 . This work emphasizes the importance of exploring new electrode materials without carbon coating as carbon-coated materials demonstrate several drawbacks in full devices. Therefore, this study provides a method and a new type of anode with high reversibility and long cycle stability.
Language eng
DOI 10.1002/anie.201609343
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 0 Not Applicable
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2016, Wiley-VCH
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