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@article{faucris.229705981,
abstract = {Novel CoO-Li2O-B2O3 and CoO-GeO2-Li2O-B2O3
flake-like glass particles for battery applications are produced by an
innovative technique: Glasses from melt quenching are processed into
micron-sized glass flakes in a stirred media mill. Processing under
well-controlled conditions yields flake-like particles with high aspect
ratios which are suitable for anodes in Lithium-ion batteries.
Electrochemical characterization by cyclic voltammetry, electrochemical
impedance spectroscopy, galvanostatic charge/discharge cycles and rate
capability measurements indicates that the flakes show superior
electrochemical properties compared to the bulk glass counterparts with a
stable specific capacity of 620 mAh g−1 after 100 cycles. The majority of charge is stored by Li+
ion diffusion inside the material and impedance spectroscopy shows
enhanced lithium ion diffusion capabilities of the flakes. The proposed
fabrication process is performed under ambient conditions and is simple,
cost-efficient, fully scalable and can be easily transferred to other
glass compositions with electrochemically active metal oxide},
author = {Esper, Julian Duane and Zhuo, Ying and Barr, Maissa and Yokosawa, Tadahiro and Spiecker, Erdmann and de Ligny, Dominique and Bachmann, Julien and Peukert, Wolfgang and Romeis, Stefan},
doi = {10.1016/j.powtec.2019.11.063},
faupublication = {yes},
journal = {Powder Technology},
keywords = {Anode; Particle design; Glasses; Shape-anisotropy; Lithium-ion battery},
pages = {218-231},
peerreviewed = {Yes},
title = {{Shape}-anisotropic cobalt-germanium-borate glass flakes as novel {Li}-ion battery anodes},
volume = {363},
year = {2020}
}