English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Finding electrode materials with high capacity is a key challenge fordeveloping Lithium-ion batteries (LIBs). Graphene was once expected to be apromising candidate, but it turns out to be too inert to interact with Li.Here, by using the first-principles calculations, we predict that Germaniumdoped graphene, termed as Germagraphene which has been achieved in recentexperiment, is a promising LIB anode material. We find that at the optimal Geconcentration, which corresponds to the chemical formula C17Ge, the specificcapacity for Germagraphene can be as high as 1734 mAh/g, over four times largerthan graphite. We show that the material is conductive before and after Liadsorption. We also investigate the diffusion process of Li on Germagraphene,and find that the diffusion barrier is low (~0.151 eV), implying fast Lidiffusion. The calculated average intercalation potential is very low (~0.03V), which is beneficial for increasing the working voltage for the full-cells.In addition, during the process of Li intercalation, the lattice change for thematerial is quite small (~0.48%), implying good cycle performance. Theseresults suggest that Germagraphene could be a promising high-capacity anodematerial for LIBs.

Germagraphene as promising anode material for Lithium-ion batteries predicted from first-principles calculations