Improvement of capacitance value as the electrode of an electrochemical capacitor by mixing starch with guanidine phosphate |
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Authors: | Toshiki Tsubota Yoshihito MiyauchiNaoya Murakami Teruhisa Ohno |
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Affiliation: | Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata-ku, Kitakyushu 804-8550, Japan |
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Abstract: | Starch or starch mixed with phosphoric acid, guanidine carbonate, or guanidine phosphate is heat-treated for use as an electrode in an electrochemical capacitor. In the case of starch, the capacitance value is low (31.2 F g−1 at 50 mA g−1). However, the capacitance value significantly increases with the addition of guanidine phosphate, which can act as a flame-retardant (124.1F g−1 at 50 mA g−1). The method used in this study, which involves mixing with a flame-retardant by immersion, should be a promising candidate for improving of the capacitance value of starch-derived carbon. |
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Keywords: | Supercapacitor Electrochemical capacitor Starch Carbon material |
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