Preparation of graphite oxide and its electrochemical performance for electric double layer capacitor

Sunhye Yang; Ick-Jun Kim; Min-Je Jeon; Ketack Kim; Seong-In Moon; Hyun-Soo Kim; Kye-Hyeok An

Journal of Industrial and Engineering Chemistry, Vol.14, No.3, 365-370, May, 2008

DOI10.1016/j.jiec.2008.01.013 Export Citation

Preparation of graphite oxide and its electrochemical performance for electric double layer capacitor

Sunhye Yang^†, Ick-Jun Kim, Min-Je Jeon, Ketack Kim, Seong-In Moon, Hyun-Soo Kim, and Kye-Hyeok An¹

Battery Research Group, Korea Electrotechnology Research Institute(KERI), Changwon 641-120, Korea
¹Material & Development Department, Jeonju Machinery Research Center, Jeonju 561-844, Korea

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The carbon materials, having different degree of the graphitization, were oxidation-treated with a sodium chlorate and 70 wt.% of nitric acid to achieve an electrochemically active material with a larger capacitance. Among non-graphitizable pitch, needle coke and natural graphite, the structure of needle coke was easily changed to the graphite oxide after oxidation treatment, and the inter-layer distance of the oxidized needle coke was expanded to 6.8 nm. This oxidized needle coke has exhibited largest specific capacitance per weight and volume of 29.5 F/g and 24.5 F/ml, respectively, at the two-electrode system in the potential range of 0-2.5 V. The electrochemical performance of the oxidized needle coke was discussed with the phenomenon of the electric field activation, and was compared with the results of KOH-activated needle coke as previously reported. (C) 2008 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Keywords:EDLC;graphite oxide;capacitance;interlayer distance;crystallite size

[References]

Rose MF, Johnson C, Owen T, Stephen B, J. Power Sources, 47, 303 (1994)
Conway BE, Electrochemical Supercapacitors, Kluwer Academic Publishers, New York, 1999, p. 12
Miller JR, Technical status of large electrical capacitors, in: Proc. 12th International Seminar on Battery Technology and Applications, Deerfield Beach, FL (1995)
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Nakajima T, Maruchi A, Hagiwara R, Carbon, 26, 357 (1988)
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[Referenced By]

[1] Rose MF, Johnson C, Owen T, Stephen B, J. Power Sources, 47, 303 (1994)

[2] Conway BE, Electrochemical Supercapacitors, Kluwer Academic Publishers, New York, 1999, p. 12

[3] Miller JR, Technical status of large electrical capacitors, in: Proc. 12th International Seminar on Battery Technology and Applications, Deerfield Beach, FL (1995)

[4] Nomoto S, Nakata H, Yoshioka K, Yoshida A, Yoneda H, J. Power Sources, 97, 807 (2001)

[5] Nohara S, Toshihide AA, Wada H, Furukawa N, Inoue H, Sugoh N, Iwasaki H, Iwakura C, J. Power Sources, 157(1), 605 (2006)

[6] Aida T, Murayama I, Yamada K, Morita M, J. Power Sources, 166(2), 462 (2007)

[7] Li HQ, Zou Y, Xia YY, Electrochim. Acta, 52(5), 2153 (2007)

[8] Takeuchi M, Maruyama T, Koike K, Kogami A, Oyama T, Kobayashi H, Electrochemistry, 69, 487 (2001)

[9] Mitani S, Lee SI, Yoon SH, Korai Y, Mochida I, J. Power Sources, 133(2), 298 (2004)

[10] Mitani S, Lee SI, Saito K, Yoon SH, Korai Y, Mochida I, Carbon, 43, 2960 (2005)

[11] Hummers WS, Offeman RE, J. Am. Chem. Soc., 80, 1339 (1958)

[12] Nakajima T, Maruchi A, Hagiwara R, Carbon, 26, 357 (1988)

[13] Bissessur R, Liu PKY, Scully SF, Synth. Met., 156, 1023 (2006)

[14] Cheng P, Teng H, Carbon, 41, 2057 (2003)

[15] Wang C, Hu C, Carbon, 43, 1926 (2005)