Jump to main content
Jump to site search


Potential application of 2D monolayer β-GeSe as an anode material in Na/K ion batteries

Author affiliations

Abstract

Sodium-ion batteries (NIBs) and potassium-ion batteries (KIBs) have attracted increasing attention due to the high cost and finite abundance of lithium. Here, by using first-principles calculations, monolayer β-GeSe has been found to be a promising anode material with a capacity of 353.65 mA h g−1 for both NIBs and KIBs. Additionally, the diffusions of Na and K over the monolayer β-GeSe are ultrafast with small energy barriers of 0.080/0.125 eV and 0.052/0.047 eV for the Ge/Se side, respectively, indicating excellent rate performance. Monolayer β-GeSe has low open circuit voltages of 0.219 V (vs. Na/Na+) and 0.030 V (vs. K/K+), which implies that the NIBs and KIBs could have high energy densities due to the high working voltages between the anode and cathode. Therefore, monolayer β-GeSe as an anode material for NIBs and KIBs with excellent performance shows tremendous potential in the energy field.

Graphical abstract: Potential application of 2D monolayer β-GeSe as an anode material in Na/K ion batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Aug 2018, accepted on 15 Nov 2018 and first published on 15 Nov 2018


Article type: Paper
DOI: 10.1039/C8CP05484C
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  •   Request permissions

    Potential application of 2D monolayer β-GeSe as an anode material in Na/K ion batteries

    Y. Zhou, M. Zhao, Z. W. Chen, X. M. Shi and Q. Jiang, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C8CP05484C

Search articles by author

Spotlight

Advertisements