Jump to main content
Jump to site search


Conductive Molybdenum Carbide as the Polysulfide Reservoir for Lithium Sulfur Batteries

Abstract

Low electronic conductivity of sulfur and the diffusion and shuttle of polysulfide intermediates are the main obstacles of the cathode to restrain the progress of lithium-sulfur (Li-S) batteries. To address the two main predicaments, we explored a dual functional 3D hierarchical filter element structured Mo2C nanosheets based sulfur electrode. The Mo2C based sulfur electrodes fulfill the requirements of conductivity (30 S cm-1) and entrapment of diffusing polysulfide intermediates, and meanwhile the advantages of high crystallinity and large specific surface area. As a filter and reservoir for polysulfides, Mo2C nanosheets possess a strong chemical interaction with polysulfides to mitigate the shuttling of polysulfides. The dual functional Mo2C nanosheets based electrode exhibited a high initial discharge capacity of ca. 1200 mA h g−1 and ca. 800 mA h g−1 after 300 cycles at 0.2 C. Moreover, the flexibility of the sulfur electrode is explored through an in situ fabrication on carbon cloth in soft-package configuration.

Back to tab navigation

Supplementary files

Publication details

The article was received on 20 Jun 2018, accepted on 02 Aug 2018 and first published on 06 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA05904G
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
  •   Request permissions

    Conductive Molybdenum Carbide as the Polysulfide Reservoir for Lithium Sulfur Batteries

    X. Zeng, X. Gao, G. R. Li, M. Sun, Z. Lin, M. Ling, J. ZHENG and C. Liang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA05904G

Search articles by author

Spotlight

Advertisements