A Nitrogen and Sulfur Dual‐Doped Carbon Derived from Polyrhodanine@Cellulose for Advanced Lithium–Sulfur Batteries
2015; Volume: 27; Issue: 39 Linguagem: Inglês
10.1002/adma.201502467
ISSN1521-4095
AutoresQuanquan Pang, Juntao Tang, He Huang, Xiao Liang, Connor J. Hart, Kam Chiu Tam, Linda F. Nazar,
Tópico(s)Conducting polymers and applications
ResumoA 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 Sn (2-) -S interactions. The sulfur electrodes exhibit an ultralow capacity fading of 0.052% per cycle over 1100 cycles.
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