title: Lithium Germanate (Li2GeO3): A High-Performance Anode Material for Lithium-Ion Batteries.
abstract: A simple, cost-effective, and easily scalable molten salt method for the preparation of Li2GeO3as a new type of high-performance anode for lithium-ion batteries is reported. The Li2GeO3exhibits 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-1after 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-1and 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.
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Md Mokhlesur
authors.initials: MM
authors.lastname: Rahman
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Irin
authors.initials: I
authors.lastname: Sultana
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Tianyu
authors.initials: T
authors.lastname: Yang
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Chemistry, University of New South Wales, Sydney, New South Wales, 2052, Australia.
authors.forename: Neeraj
authors.initials: N
authors.lastname: Sharma
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Alexey M
authors.initials: AM
authors.lastname: Glushenkov
authors.affiliation: Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC, 3216, Australia.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
keywords: anode; germanium; lithium-ion batteries; porous clusters; stable charge capacity