发明申请
US20100200537A1 Nano-patterned metal electrode for solid oxide fuel cell
审中-公开
用于固体氧化物燃料电池的纳米图案化金属电极
- 专利标题: Nano-patterned metal electrode for solid oxide fuel cell
- 专利标题(中): 用于固体氧化物燃料电池的纳米图案化金属电极
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申请号: US12653968申请日: 2009-12-17
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公开(公告)号: US20100200537A1公开(公告)日: 2010-08-12
- 发明人: Young Beom Kim , Yi Cui , Ching-Mei Hsu , Steve T. Connor , Friedrich B. Prinz
- 申请人: Young Beom Kim , Yi Cui , Ching-Mei Hsu , Steve T. Connor , Friedrich B. Prinz
- 主分类号: H01M4/88
- IPC分类号: H01M4/88 ; C23C14/34
摘要:
The current invention provides a method of fabricating nano-pore structured dense Pt electrodes using particle masking and LB deposition methods. The pore size and TPB density are easily tunable by changing initial size of the masking silica particles and the spacing between them. Compared to the solid oxide fuel cell MEAs with porous Pt electrode deposited by conventional DC sputtering method, fuel cell MEAs with the nano structured electrodes fabricated according to the current invention showed thermal and microstructural stability and superior I-V performance at 400˜450° C. Also, EIS spectra showed significant improvement in the oxygen reduction kinetics by increasing the density of charge transfer sites at the TPB. A nearly linear scaling relationship between TPB density and fuel cell performance was also demonstrated.