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Mesoporous Carbon@Titanium Nitride Hollow Spheres as an Efficient SeS 2 Host for Advanced Li–SeS 2 Batteries
Author(s) -
Li Zhen,
Zhang Jintao,
Guan Bu Yuan,
Lou Xiong Wen David
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201709176
Subject(s) - materials science , tin , cathode , titanium nitride , titanium , mesoporous material , nitride , sulfur , carbon fibers , sulfide , battery (electricity) , chemical engineering , dissolution , nanotechnology , metallurgy , composite material , catalysis , chemistry , layer (electronics) , biochemistry , power (physics) , physics , quantum mechanics , composite number , engineering
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 SeS 2 to the full and avoid its shortcomings, we designed and synthesized a hollow mesoporous carbon@titanium nitride (HMC@TiN) host for loading 70 wt % of SeS 2 as a cathode material for Li–SeS 2 batteries. Benefiting from both physical and chemical entrapment by hollow mesoporous carbon and TiN, the HMC@TiN/SeS 2 cathode manifests high utilization of the active material and excellent cycling stability. Moreover, it exhibits promising areal capacity (up to 4 mAh cm −2 ) with stable cell performance in the high‐mass‐loading electrode.