Improved Performance of Gas-diffusion Biocathode for Oxygen Reduction
Improved Performance of Gas-diffusion Biocathode for Oxygen Reduction
复制标题
气体扩散生物阴极氧还原性能的改进
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
K. Kano
中科院分区：
文献类型：
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作者：
I. Asano;Y. Hamano;S. Tsujimura;O. Shirai;K. Kano
通过调节多孔碳电极的疏水性以及在用于酶吸附过程的酶溶液中添加少量非离子表面活性剂，成功地提高了生物燃料电池中用于氧还原的气体扩散生物阴极的电流密度。使用非糖蛋白铜流出氧化酶作为电催化剂进行疏水性的优化。通过将科琴黑和聚四氟乙烯以3:2的重量比在2-丙醇中混合来制备碳浆料。用该浆料对碳纸进行改性并在60℃下干燥以除去溶剂。在酶溶液中添加少量非离子表面活性剂如Triton X-100（约0.01%）可以非常有效地将酶吸附在疏水性多孔碳表面上。该方法对于糖蛋白多铜氧化酶制造高性能气体扩散生物阴极也有效。 © 日本电化学会，保留所有权利。
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. © The Electrochemical Society of Japan, All rights reserved.