Esper JD, Maußner F, Romeis S, Zhuo Y, Barr M, Yokosawa T, Spiecker E, Bachmann J, Peukert W (2022)
Publication Language: English
Publication Type: Journal article
Publication year: 2022
Book Volume: 10
Article Number: ARTN 2200072
Journal Issue: 7
The preparation of a flake-like glass–ceramic anode material comprised of SiO2 and GeO2 for Li-ion batteries (LIBs) is demonstrated. The precursor glass material is prepared via a traditional melt quenching technique. Flake-like glass particles are obtained by compression in the liquid phase via ball milling. A subsequent heat treatment induces crystallization of GexSiyO6 domains inside the vitreous SiO2–GeO2 matrix. This novel glass-ceramic material is applied as an anode material for LIBs and shows a stable reversible capacity of 520 mAh g−1 at 0.2 C combined with good capacity retention of 87% after 100 cycles. This cycling stability can be attributed to the synergistic effects of having nanocrystalline domains embedded in the glass matrix: The open glass network can withstand the volume change and stress caused by the lithium insertion during cycling, while the nanocrystals act as active sites for the electrochemical conversion and alloying reactions. The glass–ceramic anode material exhibits superior electrochemical properties compared to its pure glass counterparts.
APA:
Esper, J.D., Maußner, F., Romeis, S., Zhuo, Y., Barr, M., Yokosawa, T.,... Peukert, W. (2022). SiO2–GeO2 Glass–Ceramic Flakes as an Anode Material for High-Performance Lithium-Ion Batteries. Energy Technology, 10(7). https://dx.doi.org/10.1002/ente.202200072
MLA:
Esper, Julian Duane, et al. "SiO2–GeO2 Glass–Ceramic Flakes as an Anode Material for High-Performance Lithium-Ion Batteries." Energy Technology 10.7 (2022).
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