Journal of Industrial and Engineering Chemistry

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Nano-sized $LiNi_{0.5}Mn_{1.5}O_4$ cathode powders with good electrochemical properties prepared by high temperature flame spray pyrolysis

  • Published : 2013.07.25
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Abstract

$LiNi_{0.5}Mn_{1.5}O_4$ cathode powders with a mean particle size of 140 nm are prepared by high-temperature flame spray pyrolysis. $Li/LiNi_{0.5}Mn_{1.5}O_4$ cells show two plateaus at approximately 4.1 and 4.7 V during discharge, irrespective of any excess of the lithium component in the spray solution, although the 4.1 V plateau decreases when the spray solution contained 20% excess lithium. The discharge capacity of the powder prepared from a spray solution with 20% excess lithium decreases from 133 to $126mAhg^{-1}$ by the 50th cycle at a current density of 0.1 C, which is a capacity retention of 95%.

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