Rare earth metal oxides as BH₄^{鈭?/sup>-tolerance cathode electrocatalysts for direct borohydride fuel cells}

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• 作者：Xuemin NI ; Yadong WANG ; ^{ywang@whut.edu.cn} ; Feng GUO ; Pei YAO ; Mu PAN
• 关键词：direct borohydride fuel cell ; oxygen electro-reduction ; rare earth oxide ; membraneless DBFC
• 刊名：Journal of Rare Earths
• 出版年：2012
• 期刊代码：7_10020721
• 类别：ms
• 出版时间：May, 2012
• 卷：30
• 期：5
• 页码：437-441
• 文件大小：673 K

摘要

Rare earth metal oxides (REMO) as cathode electrocatalysts in direct borohydride fuel cell (DBFC) were investigated. The REMO electrocatalysts tested showed favorable activity to the oxygen electro-reduction reaction and strong tolerance to the attack of BH₄^{鈭?/sup> in alkaline electrolytes. The simple membraneless DBFCs using REMO as cathode electrocatalyst and using hydrogen storage alloy as anodic electrocatalyst exhibited an open circuit of about 1 V and peak power of above 60 mW/cm2. The DBFC using Sm₂O₃ as cathode electrocatalyst showed a relatively better performance. The maximal power density of 76.2 mW/cm2 was obtained at the cell voltage of 0.52 V.}