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Citation: FENG Rui-Xiang, CAO Yu-Liang, AI Xin-Ping, YANG Han-Xi. AgNi Alloy Used as Anodic Catalyst for Direct Borohydride Fuel Cells[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 932-934. doi: 10.3866/PKU.WHXB20070627 shu

AgNi Alloy Used as Anodic Catalyst for Direct Borohydride Fuel Cells

1.

College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China

Received Date: 23 November 2006
Available Online: 29 April 2007

AgNi alloy power was prepared as anodic catalyst for direct borohydride fuel cells by mechanical ball-milling method. The XRD and SEMevidences revealed that the alloy powder was composed of nanosized crystallites aggregated into micrometer particles. It was found from electrochemical experiments that the AgNi catalyst could not only catalyze the direct electrochemical oxidation of borohydride ions, but also depress the chemical hydrolysis of borohydride ions, so as to produce a discharge capacity of KBH4 over 3500 mAh·g-1, which corresponded to a 90% utilization of the BH-4 ions as anodic fuel.
- AgNi alloy; Mechanical ball-milling; Borohydride; Fuel cells
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