Characteristics of Electrode for Electric Double Layer Capacitor Made of Carbonized and Activated Cotton Cloth

Fukuma, Masami; Uchida, Takayuki; Ogawa, Junichi; Yoshino, Katsumi

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タイトル	Characteristics of Electrode for Electric Double Layer Capacitor Made of Carbonized and Activated Cotton Cloth
著者	Fukuma, Masami Fukuma, Masami
	Uchida, Takayuki Uchida, Takayuki
	Ogawa, Junichi Ogawa, Junichi
	Yoshino, Katsumi Yoshino, Katsumi
抄録	The electric double layer capacitor (EDLC) electrode is made of carbonized and activated organic materials. In this study, material surface and electrical characteristics of carbon materials produced from low cost organic materials were examined. First, a cotton cloth has been carbonized and activated, and optimal times and temperatures of carbonization and activation processing were examined. And, surface area, pore volume and pore size distributions were analyzed. Second, activated carbons were applied to the electrodes of EDLC. Two kinds of EDLC cell, which were small area cell (2cm X 2cm) and large area cell (15cm X 10cm), were assembled. The capacitances and internal resistances of the assembled EDLC cell were evaluated by charge and discharge circuit using constant voltage source. And, the charge and discharge cycle test was performed on these assembled EDLC cells. As a result, specific surface area of the activated carbon processed for 0.5-1 hour at 450-600°C in the carbonization and 1-2 hour at 700-1000°C in the activation was the largest in prepared conditions. Therefore, EDLC cells using the activated carbon with large surface area of 1300㎡/g have shown the high density of capacitance IF/cm2. The internal resistances of both cells were less than 1n. It is also found that the activated carbon shows almost the same density of capacitance, internal resistance and no deterioration in the charge and discharge cycle test. It was clearly understood that the activated carbon made of cotton cloth has a large surface area and a low internal resistance which contribute to the low cost electrode of an EDLC.
公開者	電気材料技術懇談会
公開者 (ヨミ)	デンキ　ザイリョウ　ギジュツ　コンダンカイ
掲載誌名	電気材料技術雑誌
巻	20
号	2
開始ページ	63
終了ページ	67
刊行年月	2011-12-25
URL	http://hdl.handle.net/11094/76879
言語	英語
カテゴリ	本学関連学会 Related Societies
カテゴリ	電気材料技術雑誌 / 第20巻 / 第2号

著者版フラグ	publisher
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	本学関連学会
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	電気材料技術雑誌.20(2) P.63-P.67
DC.title	Characteristics of Electrode for Electric Double Layer Capacitor Made of Carbonized and Activated Cotton Cloth
DC.creator	Fukuma, Masami
	Uchida, Takayuki
	Ogawa, Junichi
	Yoshino, Katsumi
DC.publisher	電気材料技術懇談会
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2011-12-25
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/76879
DCTERMS.abstract	The electric double layer capacitor (EDLC) electrode is made of carbonized and activated organic materials. In this study, material surface and electrical characteristics of carbon materials produced from low cost organic materials were examined. First, a cotton cloth has been carbonized and activated, and optimal times and temperatures of carbonization and activation processing were examined. And, surface area, pore volume and pore size distributions were analyzed. Second, activated carbons were applied to the electrodes of EDLC. Two kinds of EDLC cell, which were small area cell (2cm X 2cm) and large area cell (15cm X 10cm), were assembled. The capacitances and internal resistances of the assembled EDLC cell were evaluated by charge and discharge circuit using constant voltage source. And, the charge and discharge cycle test was performed on these assembled EDLC cells. As a result, specific surface area of the activated carbon processed for 0.5-1 hour at 450-600°C in the carbonization and 1-2 hour at 700-1000°C in the activation was the largest in prepared conditions. Therefore, EDLC cells using the activated carbon with large surface area of 1300㎡/g have shown the high density of capacitance IF/cm2. The internal resistances of both cells were less than 1n. It is also found that the activated carbon shows almost the same density of capacitance, internal resistance and no deterioration in the charge and discharge cycle test. It was clearly understood that the activated carbon made of cotton cloth has a large surface area and a low internal resistance which contribute to the low cost electrode of an EDLC.
citation_title	Characteristics of Electrode for Electric Double Layer Capacitor Made of Carbonized and Activated Cotton Cloth
citation_author	Fukuma, Masami
	Uchida, Takayuki
	Ogawa, Junichi
	Yoshino, Katsumi
citation_publisher	電気材料技術懇談会
citation_language	英語
citation_date	2011-12-25
citation_journal_title	電気材料技術雑誌
citation_volume	20
citation_issue	2
citation_firstpage	63
citation_lastpage	67
citation_public_url	http://hdl.handle.net/11094/76879

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