Show simple item record

AuthorArro, Christian
AuthorMohamed, Assem
AuthorBensalah, Nasr
Available date2021-10-18T06:52:18Z
Publication Date2021
Publication NameQatar University Annual Research Forum and Exhibition (QUARFE 2021)
CitationArro C., Mohamed A., Bensalah N., "Germanium oxide/germanium/ reduced graphene (GeO2/Ge/r-GO) hybrid composite anodes for lithium-ion batteries: Effect of Ge loading on the electrochemical performance", Qatar University Annual Research Forum and Exhibition (QUARFE 2021), Doha, 20 October 2021, https://doi.org/10.29117/quarfe.2021.0065
URIhttps://doi.org/10.29117/quarfe.2021.0065
URIhttp://hdl.handle.net/10576/24332
AbstractHybrid composites between Germanium (Ge) and carbonaceous materials are promising anode materials for Li-ion batteries (LIBs). The mitigation of reduced cycling ability and rate capability allows for the unhindered benefit of higher capacities in Ge-based anodes. Here, the effect of Ge mass loading on the electrochemical performance of GeO2/Ge/r-GO composites was evaluated as LIBs anode. GeO2/Ge/r-GO composites were synthesized by controlled microwave radiation of ball-milled Ge and sonicated dispersion of graphene oxide (GO). The composite anode at Ge 25% showed greatest cycling retention with 91% after 100 cycles and an average specific capacity of 300 mAh/g (1600 mAh/g Ge). At 75% Ge mass loading the anode suffered with limited cycling retention of 57.5% at the cost of greater specific capacities. The composite at 50% Ge attained advantageous characteristics of both composites with a stable cycling performance of 71.4% after 50 cycles and an average specific capacity of 400 mAh/g (1067 mAh/g Ge). These findings can be used to shape high-energy Ge-based anodes and guide future development in energy storage.
Languageen
PublisherQatar University Press
SubjectLi ion batteries
Ge-based anodes
Graphene oxide
Hybrid composites
Alloying/De-alloying
TitleGermanium Oxide/germanium/ reduced Graphene (GeO2/Ge/r-GO) Hybrid Composite Anodes for Lithium-ion Batteries: Effect of Ge loading on Electrochemical Performance
TypePoster
dc.accessType Open Access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record