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.

通过原位电子显微镜观察，阐明了该催化剂的降解机理。结果表明，在模拟阴极环境的加湿空气条件下，铂/炭的结构变化是由于铂纳米粒子与碳载体界面上碳载体的选择性氧化所致。离聚体对碳的腐蚀和铂粒子的移动起到了保护作用，延缓了铂/碳的降解。此外，还考察了反应气体对铂/碳结构变化的影响。

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

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

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

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

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