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タイトル: | Effects of the cationic structures of fluorohydrogenate ionic liquid electrolytes on the electric double layer capacitance |
著者: | Senda, Atsushi Matsumoto, Kazuhiko https://orcid.org/0000-0002-0770-9210 (unconfirmed) Nohira, Toshiyuki https://orcid.org/0000-0002-4053-554X (unconfirmed) Hagiwara, Rika https://orcid.org/0000-0002-7234-3980 (unconfirmed) |
著者名の別形: | 松本, 一彦 野平, 俊之 萩原, 理加 |
キーワード: | Ionic liquid Electric double layer capacitor Fluorohydrogenate |
発行日: | 1-Jul-2010 |
出版者: | Elsevier |
誌名: | Journal of Power Sources |
巻: | 195 |
号: | 13 |
開始ページ: | 4414 |
終了ページ: | 4417 |
抄録: | Electric double layer capacitance of an activated carbon electrode has been measured for fluorohydrogenate ionic liquids (FHILs) based on five different cations (1, 3-dimethylimidazolium (DMIm+), 1-ethyl-3-methylimidazolium (EMIm+), 1-butyl-3-methylimidazolium (BMIm+), 1-ethyl-1-methylpyrrolidinium (EMPyr+), and 1-methoxymethyl-1-methylpyrrolidinium (MOMMPyr+)) at 25 °C. For all the FHILs, the capacitance increases with increase in charging voltage, and exhibits the maximum value around 2.7 V. The capacitances for FHILs are higher than those for EMImBF4 or 1 M tetraethylammonium tetrafluoroborate in propylene carbonate (TEABF4/PC) in the measured range (1.0 < V < 3.2). For the three imidazolium-based FHILs, the maximum capacitance decreases with increase in the size of the cation in the order, DMIm(FH)2.3F (178 F g−1) > EMIm(FH)2.3F (162 F g−1) > BMIm(FH)2.3F (135 F g−1). On the other hand, the maximum capacitance observed for MOMMPyr(FH)2.3F (152 F g−1) is larger than that for EMPyr(FH)2.3F (134 F g−1) in spite of the larger size of MOMMPyr+ than EMPyr+, which is derived from introduction of the methoxy group. Some FHILs with low melting points exhibit a sufficient capacitance even at −40 °C (64 F g−1 for EMIm(FH)2.3F). |
著作権等: | (c) 2010 Elsevier この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/109741 |
DOI(出版社版): | 10.1016/j.jpowsour.2010.01.055 |
出現コレクション: | 学術雑誌掲載論文等 |
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