Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Topological semimetal Li2CrN2 sheet as a promising hydrogen storage material

Abstract

An ideal electrode for electrochemical storage of hydrogen needs to be conductive for electron. The robust conductivity protected by topology in topological quantum materials just meets this requirement. However, such study is still lacking so far. Herein, for the first time, we explore the performance of hydrogen storage in topological quantum material Li2CrN2 sheet, and have found that the interaction between H2 and the sheet is mainly attributed to the polarization mechanism, resulting in a gravimetric capacity of 4.77% that is higher than the value of the Li decorated MoS2 (4.4%), Li-decorated phosphorene (4.4%) and Li substituted BHNH sheet (3.16 %). The hydrogen adsorption energy is found to be in the range of 0.16-0.33 eV, which is in the required energy window for balancing the adsorption stability and fast kinetics, and the releasing temperature is in the range of 160 -270 K, desirable for practical operations. This study is of significance for fuel cell applications going beyond the conventional materials for hydrogen storage.

Back to tab navigation

Article information


Submitted
18 Mar 2020
Accepted
06 May 2020
First published
08 May 2020

Nanoscale, 2020, Accepted Manuscript
Article type
Paper

Topological semimetal Li2CrN2 sheet as a promising hydrogen storage material

L. Ma and Q. Sun, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/D0NR02180F

Social activity

Search articles by author

Spotlight

Advertisements