A novel cathode architecture using Cu nanoneedle arrays as the cathode support for AAEMFC application

作者：Jia, Jia; Yu, Hongmei^*; Gao, Xueqiang; Chi, Jun; Qin, Bowen; Song, Wei; Shao, Zhigang^*; Yi, Baolian

来源：Journal of Materials Chemistry A, 2017, 5(28): 14794-14800.

DOI：10.1039/c7ta02437a

• MEMBRANE FUEL-CELLS
• HYDROGEN OXIDATION REACTION
• OXYGEN REDUCTION
• NANOTUBE ARRAYS
• WATER-MOVEMENT
• THIN-FILM
• PERFORMANCE
• ELECTRODE
• IONOMER
• ELECTROCATALYSTS

A novel cathode architecture using vertically aligned Cu nanoneedle arrays (NNAs) as an ordered support for alkaline anion-exchange membrane fuel cell (AAEMFC) application is developed. Cu NNAs are directly grown on a GDL via three steps of electrochemical reaction. After depositing a Pd layer on the surface of Cu by a pulse electrodeposition method to form Pd/CuNNAs, the cathode catalyst layer is formed. The AAEMFC prepared without alkaline ionomer in the cathode catalyst layer shows an enhanced performance with ultra-low Pd loading down to 47 mu g cm(-2), which is much higher than that of a conventional cathode electrode with the Pt loading of 100 mu g cm(-2). This is the first report where three-dimensional Cu NNAs are applied as the cathode support in an AAEMFC, which is able to deliver a higher power density without an alkaline ionomer than conventional MEAs.

• 出版日期2017-7-28
• 单位中国科学院; 中国科学院大连化学物理研究所; 中国科学院大学