Na 2 S–Carbon Nanotube Fabric Electrodes for Room‐Temperature Sodium–Sulfur Batteries | Zendy

Yu Xingwen | Zendy; Manthiram Arumugam | Zendy

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Na 2 S–Carbon Nanotube Fabric Electrodes for Room‐Temperature Sodium–Sulfur Batteries

Author(s) -

Yu Xingwen,

Manthiram Arumugam

Publication year - 2015

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201405344

Subject(s) - polysulfide , cathode , sulfur , carbon nanotube , electrochemistry , materials science , inert , anode , battery (electricity) , carbon fibers , sodium , sulfide , chemical engineering , nanotube , electrode , nanotechnology , inorganic chemistry , chemistry , composite material , metallurgy , organic chemistry , electrolyte , power (physics) , physics , quantum mechanics , composite number , engineering

A unique sodium sulfide (Na 2 S) cathode is developed, which will allow the use of sodium‐free anodes for room‐temperature sodium–sulfur (Na–S) batteries. To overcome the “inert” nature of the Na 2 S, a special cathode structure is developed by spreading the multi‐walled carbon nanotube (MWCNT)‐wrapped Na 2 S particles onto MWCNT fabrics. Spectroscopic and electrochemical analyses reveal a series of polysulfide intermediates involved in the charge/discharge of the cell. The Na–S battery prepared in full discharge state with the Na 2 S/MWCNT cathode provides a remarkable capacity of 500 A h kg −1 (based on sulfur mass) after 50 cycles.

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