High-Rate Charge-Discharge Performances of β-FeOOH-Carbon Composite Electrodes

Hideyuki  Morimoto; Kazuhiko Takeno; Yuuki Uozumi; Kenichi Sugimoto; Shinichi Tobishima

doi:10.4028/www.scientific.net/KEM.301.139

Paper Titles

Measurements of Microwave Dielectric Property of Dielectric Thin Layers Using Micro-Sized Planar Electrodes
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Reflection Intensity Measurement for Dielectric Material Using a Microwave Single Probe and Its Electromagnetic Field Analysis
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Dielectric Spectra of BaTiO₃-Based Ceramics Measured by Impedance Analyzer Using Micro Planar Electrodes
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Lithium Intercalation Properties of Octatitanates Composed of Nanosheets with Various Dimensions
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High-Rate Charge-Discharge Performances of β-FeOOH-Carbon Composite Electrodes
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Enhancement on Proton Conductivity of Three-Dimensionally Ordered Macroporous Silica Membrane by Surface Sulfonation
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Preferential Orientation Dependent Mechanical and Electrical Properties in Naβ-Alumina Ceramics
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Synthesis and Evaluation of Electrochemical Properties of Mesoporous Anatase Titania
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Evaluation of Electrode Performances of Single-Chamber Solid Oxide Fuel Cells
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High-Rate Charge-Discharge Performances of β-FeOOH-Carbon Composite Electrodes

Abstract:

Composite electrode material of crystalline b-FeOOH and carbon was prepared by hydrolyzing of FeCl3 (aq.) in which carbon powder with various specific surface areas was dispersed. Composite electrode material of b-FeOOH fine particles and Ketjen black (KB:specific surface area 1270 m2 g-1) of high specific surface area exhibited the high capacity over 250 mAh g-1 per b-FeOOH weight and good cycle performances at rapid charge-discharge current density over 5 mA cm-2 (ca. 5.0 A g-1 per b-FeOOH weight) in nonaqueous electrolytes including lithium ions. Composite electrode materials of crystalline b-FeOOH and carbon are one of the promising candidates as electrode materials for energy storage devices that high-power operations are required.