Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 50, Pages 16003-16007Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201709176
Keywords
hollow mesoporous carbon; mesoporous materials; rechargeable batteries; selenium sulfides; titanium nitride
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Funding
- Ministry of Education (Singapore) [RG12/14, M4011258]
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The introduction of a certain proportion of selenium into sulfur-based cathodes is an effective strategy for enhancing the integrated battery performance. However, similar to sulfur, selenium sulfide cathodes suffer from poor cycling stability owing to the dissolution of reaction intermediate products. In this study, to exploit the advantages of SeS2 to the full and avoid its shortcomings, we designed and synthesized a hollow mesoporous carbon@titanium nitride (HMC@TiN) host for loading 70wt% of SeS2 as a cathode material for Li-SeS2 batteries. Benefiting from both physical and chemical entrapment by hollow mesoporous carbon and TiN, the HMC@TiN/SeS2 cathode manifests high utilization of the active material and excellent cycling stability. Moreover, it exhibits promising areal capacity (up to 4mAhcm(-2)) with stable cell performance in the high-mass-loading electrode.
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