Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
Effect of Cation Mixing on Utility of Iron in Iron/Carbon Nano-Fiber Composite Electrode
Minato EGASHIRA
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2015 Volume 83 Issue 5 Pages 354-356

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Abstract

Iron/carbon nano-fiber composite electrodes on the basis of Fe3+ but containing Fe2+ or Ni2+ ions have been prepared via sol-gel precipitation. The influence of the Fe2+ doping on the nano-structure and the utility of iron in alkaline electrolyte has been confirmed. The mixing of Fe2+ in composite provides larger iron oxide particles with high crystallinity, and changes the specific capacity of composite electrode. The specific capacity of the composite electrode introducing Fe2+:Fe3+ at 4:1 increases about 1.4 times compared with analogue having only Fe3+. In contrast, the doping of Ni2+ in the composite reduces the iron utility.

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© 2015 The Electrochemical Society of Japan
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