Lithium Germanate (Li2GeO3): A High‐Performance Anode Material for Lithium‐Ion Batteries |
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| Authors: | Dr Md Mokhlesur Rahman Irin Sultana Dr Tianyu Yang Dr Zhiqiang Chen Dr Neeraj Sharma Dr Alexey M Glushenkov Prof Ying Chen |
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| Affiliation: | 1. Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, Australia;2. School of Chemistry, University of New South Wales, Sydney, New South Wales, Australia |
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| Abstract: | 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. |
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| Keywords: | anode germanium lithium-ion batteries porous clusters stable charge capacity |
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