普鲁士蓝
催化作用
电催化剂
化学
电化学
无机化学
碳纤维
旋转圆盘电极
X射线光电子能谱
氧化还原
核化学
材料科学
电极
循环伏安法
化学工程
复合数
有机化学
复合材料
物理化学
工程类
作者
Jakkid Sanetuntikul,Sangaraju Shanmugam
标识
DOI:10.1016/j.electacta.2013.11.193
摘要
We describe a simple approach for the Prussian blue nanocubes dispersed on carbon composite (PBC/C) as a non-precious catalyst for the electrochemical oxygen reduction reaction (ORR) in alkaline medium. The interaction between Prussian blue (PB) and the carbon support was confirmed by using FT-IR, and XPS spectroscopy. PBC/C catalyst exhibits 100 mV more positive onset potential than Prussian blue supported on carbon (PB/VXC-72) for ORR. Rotating disk electrode measurements showed that PBC/C had about 17 times higher oxygen reduction mass activity compared to the PB/VXC-72 physical mixture. PBC/C hybrid catalyst exhibited superior durability in aqueous alkaline medium compared with Pt/C and also provided low H2O2 production confirmed by rotating ring-disk electrode measurement. The PBC/C catalyst showed better activity and selectivity, which can be attributed to the synergistic coupling effects between the PB nanocubes and carbon support.
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