Improved Performance of Gas-diffusion Biocathode for Oxygen Reduction
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- ASANO Itaru
- Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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- HAMANO Yasuyuki
- Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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- TSUJIMURA Seiya
- Division of Applied Life Science, Graduate School of Agriculture, Kyoto University Present address: Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba
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- SHIRAI Osamu
- Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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- KANO Kenji
- Division of Applied Life Science, Graduate School of Agriculture, Kyoto University
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The current density of gas-diffusion biocathodes for the oxygen reduction in biofuel cells was successfully increased by adjusting the hydrophobicity of porous carbon electrodes and by adding small amount of non-ionic surfactant to enzyme solution to be used in the enzyme adsorption process. Optimization of the hydrophobicity was performed with non-glycoprotein cupper efflux oxidase as an electrocatalyst. Carbon slurry was prepared by mixing Ketjen black and polytetrafluoroethylene in 2-propanol at a weight ratio of 3:2. Carbon paper was modified with the slurry and dried at 60°C to remove the solvent. Addition of small amount of non-ionic surfactant such as Triton X-100 (about 0.01%) into the enzyme solution was very effective to adsorb the enzyme on the hydrophobic porous carbon surface. The proposed method is also effective for glycoprotein multi-copper oxidase to fabricate high performance gas-diffusion biocathode.
収録刊行物
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- Electrochemistry
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Electrochemistry 80 (5), 324-326, 2012
公益社団法人 電気化学会
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詳細情報 詳細情報について
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- CRID
- 1390282681474328064
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- NII論文ID
- 130002147430
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- NII書誌ID
- AN00151637
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- COI
- 1:CAS:528:DC%2BC38XmvV2qs7o%3D
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- ISSN
- 21862451
- 13443542
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- NDL書誌ID
- 023599382
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用可