Journal
ADVANCED MATERIALS
Volume 27, Issue 39, Pages 6021-6028Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201502467
Keywords
biosustainable materials; chemisorptions; dual-doped carbon; lithium-sulfur batteries; polysulfide binding
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Funding
- NRCan through their EcoEII program
- BASF International Scientific Network for Electrochemistry and Batteries
- NSERC
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A sulfur electrode exhibiting strong polysulfide chemisorption using a porous N, S dual-doped carbon is reported. The synergistic functionalization from the N and S heteroatoms dramatically modifies the electron density distribution and leads to much stronger polysulfide binding. X-ray photoelectron spectroscopy studies combined with ab initio calculations reveal strong Li+-N and S-n(2-)-S interactions. The sulfur electrodes exhibit an ultralow capacity fading of 0.052% per cycle over 1100 cycles.
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