Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 31, Pages 13071-13078Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004914
Keywords
amorphous nanomaterials; heterogeneous catalysis; hollow nanoboxes; Li-S batteries; molybdenum polysulfide
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Funding
- National Natural Science Foundation of China [51532001]
- Beijing Natural Science Foundation [2194077]
- National Postdoctoral Program for Innovative Talents [BX20180020]
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The practical implementation of lithium-sulfur batteries is obstructed by poor conductivity, sluggish redox kinetics, the shuttle effect, large volume variation, and low areal loading of sulfur electrodes. Now, amorphous N-doped carbon/MoS3 (NC/MoS3) nanoboxes with hollow porous architectures have been meticulously designed as an advanced sulfur host. Benefiting from the enhanced conductivity by the N-doped carbon, reduced shuttle effect by the strong chemical interaction between unsaturated Mo and lithium polysulfides, improved redox reaction kinetics by the catalytic effect of MoS3, great tolerance of volume variation and high sulfur loading arising from flexible amorphous materials with hollow-porous structures, the amorphous NC/MoS3 nanoboxes enabled sulfur electrodes to deliver a high areal capacity with superior rate capacity and decent cycling stability. The synthetic strategy can be generalized to fabricate other amorphous metal sulfide nanoboxes.
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