Electrochemical Properties of Fly Ash by Fossil Power Plant Combustion of Oil and Characteristics as Electrode Material in Secondary Battery

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  • 火力発電所燃焼灰フライアッシュの電気化学的特性と二次電池特性
  • カリョク ハツデンショ ネンショウバイ フライアッシュ ノ デンキ カガクテキ

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Abstract

The electrochemical properties of fly ash obtained from combustion of fuel in fossil power plants and their performance as anode material of secondary battery have been investigated. Various fly ash pellets molded at various molding presssure have been used as anode in lithium secondary battery. The best performance was achieved when fly ash pellet molded at pressure of 100kgf/cm2 is utilized, that is, charge capacity of 273Ah/kg and Coulombic efficiency of larger than 95% have been achieved In addition, this battery exhibited good cycling performance. Considering these results, we predicted that utilization of the fly ash as anodematerial and polyaniline conducting polymer as cathode material in a secondary battery will show charge capacity of 101Ah/kg, energy density of 365Wh/kg and Coulombic efficiency of higher than 92%. Potential application of fly ash as anode material in the secondary lithium ion battery seems also to be meaningful from view point of evironmental improvement by reducing harmful waste.

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