In situ TEM observation of the degradation process of fuel cell electrocatalyst under real operating conditions

真实运行条件下燃料电池电催化剂降解过程的原位TEM观察

• 批准号: 23510136
• 负责人: SHIMIZU Takahiro
• 金额: $ 3.83万
• 依托单位: Japan Automobile Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23510136/
• 关键词: その場観察; 電極触媒; 燃料電池; ナノ材料; 電子顕微鏡

The in situ TEM observation was performed to clarify the degradation mechanism of the Pt/C electrocatalyst. The observation revealed that the structural change of the Pt/C under humidified air condition, simulating the cathode environment, was attributed to the selective oxidation of carbon support at the interface between a Pt nano particle and carbon support. Also it was suggested that the ionomer provides a protection against the carbon corrosion and the movement of Pt particles, and retards the degradation of the Pt/C. In addition, the effect of reactant gases on the structural change of the Pt/C was investigated.

进行原位观察，以阐明PT/C电催化剂的降解机理。该观察结果表明，在加湿空气条件下，PT/C的结构变化归因于在PT纳米粒子和碳支撑之间的界面上选择性氧化碳支持的选择性氧化。还建议离子体提供了防止碳腐蚀和PT颗粒运动的保护，并阻止了Pt/c的降解。另外，研究了反应气体对PT/C结构变化的影响。

项目成果

固体高分子形燃料電池の反応ガス雰囲気におけるPt/Cのその場観察

聚合物电解质燃料电池反应气体气氛中Pt/C的原位观察

• 发表时间: 2014
• 作者: 清水貴弘;今村大地;矢口紀恵;上野武夫
• 通讯作者: 上野武夫

Structural Change of the Pt/C Electrocatalyst in Humidified Air Observed by In situ TEM

原位 TEM 观察加湿空气中 Pt/C 电催化剂的结构变化

• DOI: 10.1149/05002.1439ecst
• 发表时间: 2013
• 期刊: ECS Transactions
• 作者: T. Shimizu;D. Imamura;T. Yaguchi;T. Kanemura;T. Kamino
• 通讯作者: T. Kamino

Development of an In-Situ High Temperature-High Humidity TEM Observation Technique and Its Application to the Analysis of Catalyst Degradation Mechanism

原位高温高湿TEM观察技术及其在催化剂降解机理分析中的应用

• 作者: Toshie Yaguchi;Akira Watabe;Hiroaki Matsumoto;Takeo Kamino;Takashi Kanemura;Takahiro Shimizu;Daichi Imamura
• 通讯作者: Daichi Imamura

加湿空気中におけるPt/C触媒劣化過程のその場観察

加湿空气中Pt/C催化剂劣化过程的原位观察

• 发表时间: 2011
• 作者: 清水貴弘;今村大地;矢口紀恵;金村崇;上野武夫
• 通讯作者: 上野武夫

その場観察による自動車用燃料電池電極触媒の劣化解析

汽车燃料电池电极催化剂劣化原位观察分析

• 作者: 清水貴弘;今村大地;矢口紀恵;金村崇;上野武夫
• 通讯作者: 上野武夫