Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
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75 巻 , 1 号
選択された号の論文の16件中1~16を表示しています
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  • Tsutomu MIYASAKA, Yujiro KIJITORI, Masashi IKEGAMI
    75 巻 (2007) 1 号 p. 2-12
    公開日: 2012/03/20
    ジャーナル オープンアクセス
    Recent trend in industries toward the development of thin opto-electronic devices requires flexibility and safety for versatile applications including ubiquitous electric generators. Dye-sensitized mesoporous semiconductor electrodes can be a powerful candidate for fabrication of low-cost flexible photovoltaic devices. This review introduces low-temperature coating methods for fixing mesoporous TiO2 films on conductive plastic electrodes. Characteristics of plastic dye-sensitized solar cells assembled by this technology are also summarized, including outdoor performance of large-area full-plastic modules in comparison with commercial silicon-based solar batteries.
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  • Norio MIURA, Dhesingh Ravi SHANKARAN, Toshikazu KAWAGUCHI, Kiyoshi MAT ...
    75 巻 (2007) 1 号 p. 13-22
    公開日: 2012/03/20
    ジャーナル オープンアクセス
    Detection of 2,4,6-trinitrotoluene (TNT) is an important environmental, security and health concern for the global community. TNT is a prime constituent of most of the landmines and bombs and is highly toxic and mutagenic. Various military and terrorist activities (e.g., manufacturing, waste discharge, testing and training) have resulted in extensive contamination of soil and ground water by TNT and its derivatives. Consequently, the development and application of new sensing techniques for detection and quantification of TNT has grown steadily over the years. Despite wide variety of analytical techniques, surface plasmon resonance (SPR) based immunosensors received great attention as a promising mean for TNT detection due to their advantages including high sensitivity, selectivity, good versatility and high throughput. This review explores the recent trend and advancements in immunochemical techniques for environmental monitoring and field detection of TNT. The advantages of the surface plasmon resonance as an optical signal transduction and indirect competitive immunoassay as the sensing principle are discussed with special emphasis on our investigations on TNT detection. A brief description on explosives, land-mines and the current detection techniques (bulk and trace detection) is also provided.
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  • Rika HAGIWARA, Je Seung LEE
    75 巻 (2007) 1 号 p. 23-34
    公開日: 2012/03/20
    ジャーナル オープンアクセス
    A short review of ionic liquids (ILs) and their applications as electrolytes for electrochemical devices, such as electric double layer capacitors, fuel cells, lithium batteries, and solar cells, are presented here. The properties of ILs, such as non-volatility, non-flammability, wide liquid temperature ranges, and wide electrochemical windows, have the potential to be improved, including improvements in durability and safety, extending the operational temperature ranges and enabling improvements in power and energy densities of the devices.
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コミュニケーション
  • Keqiang DING, Takeyoshi OKAJIMA, Takeo OHSAKA
    75 巻 (2007) 1 号 p. 35-38
    公開日: 2012/03/20
    ジャーナル オープンアクセス
    An electrocatalysis of the multi-walled carbon nanotubes (MWCNTs)/Nafion-modified edge-plane pyrolytic graphite (EPPG) electrode for the one-electron reduction-oxidation reaction of the O2/O2 (superoxide ion) redox couple in three 1-n-alkyl-3-methylimidazolium tetrafluoroborate room temperature ionic liquids (RTILs), 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4), 1-n-propyl-3-methylimidazolium tetrafluoroborate (PMIBF4) and 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) has been found. We have observed that in all the RTILs both the cathodic and anodic peak currents and the peak potential separations (ΔEp) between the anodic and cathodic peak potentials at the MWCNTs/Nafion-modified electrode are increased and decreased, respectively, compared with those at the bare electrode. The values of the standard rate constant (k0) were estimated from the ΔEp values, i.e., the k0 values at the MWCNTs/Nafion-modified electrode are (8.3±0.1)×10−3, (10.4±0.1)×10−3 and (4.2±0.1)×10−3 cm s−1 in EMIBF4, PMIBF4 and BMIBF4, respectively, while the corresponding values at the bare electrode are (4.3±0.1)×10−3, (2.9±0.1)×10−3 and (2.3±0.1)×10−3 cm s−1, respectively. The observed enhancement of the O2/O2 redox reaction is discussed briefly based on the catalytic effects and physicochemical properties of carbon nanotubes.
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電気化学:測定と解析のてびき
若者の広場
 
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