Jump to main content
Jump to site search


Topological dual double node-line semimetals NaAlSi(Ge) and their potential as cathode material for sodium ion batteries

Abstract

Using first-principles method and effective model, we propose that the real material family NaAlSi(Ge) behaves as dual double node-line semimetals (DNLSs) with unconventional topological surface states. The dual DNLSs locate in k$_{z}$=0 and k$_{z}$=$\pi$/a planes, respectively. Both of the DNLSs consist of homocentric two nodal lines that one is type-I nodal line and the other one is a type-I nodal line embedded with four type-III nodal points. The type-III nodal points accompanying with one direction flat band are hoping to be a new platform for studying correlated phases. More intriguingly, because of large proportion of Na ions, NaAlSi(Ge) family is potential candidate for topological sodium ion batteries (SIBs) with high theoretical reversible capacity (476 (238) mAhg$^{-1}$) and suitable migration barrier.

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Jul 2019, accepted on 28 Oct 2019 and first published on 05 Nov 2019


Article type: Paper
DOI: 10.1039/C9TC04096J
J. Mater. Chem. C, 2019, Accepted Manuscript

  •   Request permissions

    Topological dual double node-line semimetals NaAlSi(Ge) and their potential as cathode material for sodium ion batteries

    X. Yi, W. Li, Z. Li, P. Zhou, Z. Ma and L. Sun, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C9TC04096J

Search articles by author

Spotlight

Advertisements