γ-Ray irradiation as highly efficient approach for synthesis of supported high Pt loading cathode catalyst for application in direct methanol fuel cell

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• 作者：Geun Seok Chai ; Baizeng Fang ; Jong-Sung Yu
• 关键词：γ ; -Ray irradiation ; High Pt loading ; Electrocatalyst ; Cathode ; Direct methanol fuel cell
• 刊名：Electrochemistry Communications
• 出版年：2008
• 出版时间：November 2008
• 年：2008
• 卷：10
• 期：11
• 页码：1801-1804
• 全文大小：329 K

文摘

In this study, a γ-ray irradiation approach without addition of any commonly used reducing chemicals has been explored to synthesize carbon-supported high Pt loading (i.e., 80 wt. % ) cathode catalyst for direct methanol fuel cell. Compared with the Pt catalyst prepared by impregnation-NaBH₄ reduction approach, the supported Pt catalyst synthesized by γ-ray irradiation has better dispersion of Pt nanoparticles on the carbon support with smaller particle size and narrower size distribution and has demonstrated enhanced catalytic activity toward oxygen reduction reaction and improved fuel cell performance.