Journal
MATERIALS TECHNOLOGY
Volume 33, Issue 12, Pages 810-814Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10667857.2018.1509525
Keywords
Soft carbon fiber; binder-free; flexible anodes; sodium-ion batteries
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Sodium batteries are considered as the most promising candidates for next generation power source. Carbon materials are the most viable anode material for sodium ion batteries. However, graphic soft carbons, the most widely used anodes in lithium ion batteries due to its higher electronic conductivity and density, are fail to work in sodium ion batteries due to the larger Na+ radius. Here, in our reports, soft carbon fibers derived from industrialized wet spun polyacrylonitrile (PAN) precursor are fabricated under different heat treatment temperature. When characterized as binder and conductive agent free anode for sodium ion batteries, the soft carbon fibers (1250 degrees C) deliver an initial reversible capacity 190 mAh g(-1) and a good capacity retention of 93% even after 100 cycles. The excellent electrochemical performance makes the soft carbon fibers promising choices as anodes for sodium ion batteries.
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