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https://hdl.handle.net/2440/117197
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Type: | Journal article |
Title: | 2D MoN-VN heterostructure to regulate polysulfides for highly efficient lithium-sulfur batteries |
Author: | Ye, C. Jiao, Y. Jin, H. Slattery, A. Davey, K. Wang, H. Qiao, S. |
Citation: | Angewandte Chemie International Edition, 2018; 57(51):16703-16707 |
Publisher: | Wiley |
Issue Date: | 2018 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Chao Ye, Yan Jiao, Huanyu Jin, Ashley D. Slattery, Kenneth Davey, Haihui Wang and Shi-Zhang Qiao |
Abstract: | Lithium-sulfur batteries hold promise for next-generation batteries. A problem however is rapid capacity fading. Moreover, atomic-level understanding of the chemical interaction between sulfur host and polysulfides is poorly elucidated from a theoretical perspective. Here, a two-dimensional (2D) heterostructured MoN-VN is fabricated and investigated as a new model sulfur host. Theoretical calculations indicate that electronic structure of MoN can be tailored by incorporation of V. This leads to enhanced polysulfides adsorption. Additionally, in situ synchrotron X-ray Diffraction and electrochemical measurements reveal effective regulation and utilization of the polysulfides in the MoN-VN. The MoN-VN-based lithium-sulfur batteries have a capacity of 708 mA h g⁻¹ at 2 C and a capacity decay as low as 0.068% per cycle during 500 cycles with sulfur loading of 3.0 mg cm⁻². |
Keywords: | Heterostructure; lithium-sulfur batteries; sulfur host materials; two-dimensional materials |
Rights: | © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
DOI: | 10.1002/anie.201810579 |
Grant ID: | http://purl.org/au-research/grants/arc/DP160104866 http://purl.org/au-research/grants/arc/LP160100927 http://purl.org/au-research/grants/arc/FL170100154 http://purl.org/au-research/grants/arc/DE150101234 |
Published version: | http://dx.doi.org/10.1002/anie.201810579 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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