Evolution of Stabilized 1T‐MoS2 by Atomic‐Interface Engineering of 2H‐MoS2/Fe−Nx towards Enhanced Sodium Ion Storage
Metallic conductive 1T phase molybdenum sulfide (MoS2) has been identified as promising anode for sodium ion (Na+) batteries, but its metastable feature makes it difficult to obtain and its restacking during the charge/discharge processing result in part capacity reversibility. Herein, a synergetic...
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Published in: | Angewandte Chemie International Edition Vol. 62; no. 14; pp. e202218282 - n/a |
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Main Authors: | , , , , , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Weinheim
Wiley Subscription Services, Inc
27-03-2023
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Edition: | International ed. in English |
Subjects: | |
Online Access: | Get full text |
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Summary: | Metallic conductive 1T phase molybdenum sulfide (MoS2) has been identified as promising anode for sodium ion (Na+) batteries, but its metastable feature makes it difficult to obtain and its restacking during the charge/discharge processing result in part capacity reversibility. Herein, a synergetic effect of atomic‐interface engineering is employed for constructing 2H‐MoS2 layers assembled on single atomically dispersed Fe−N−C (SA Fe−N−C) anode material that boosts its reversible capacity. The work‐function‐driven‐electron transfer occurs from SA Fe−N−C to 2H‐MoS2 via the Fe−S bonds, which enhances the adsorption of Na+ by 2H‐MoS2, and lays the foundation for the sodiation process. A phase transfer from 2H to 1T/2H MoS2 with the ferromagnetic spin‐polarization of SA Fe−N−C occurs during the sodiation/desodiation process, which significantly enhances the Na+ storage kinetics, and thus the 1T/2H MoS2/SA Fe−N−C display a high electronic conductivity and a fast Na+ diffusion rate.
These findings on the evolution of stabilized 1T‐MoS2 will strengthen our comprehensive knowledge of electronic structure optimization strategy and pave the way for the design of other heterostructures materials for high‐performance energy storage. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/anie.202218282 |