کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1280423 | 1497601 | 2010 | 6 صفحه PDF | دانلود رایگان |

A method for preparing Nickel-based skeletal catalyst as well as its characterization is reported. The catalyst has an intended use as a cathode in alkaline electrolysis. Skeletal catalyst electrodes were synthesized from equal weights (50% each) of aluminum and nickel powders. The catalyst was prepared with metal powders which were melted in an induction oven, allowing the alloy to solidify at room temperature to obtain the thermodynamically-stable phases of the alloy. Samples from the resulting alloy went through a leaching process in an alkaline solution using two different leaching times. After leaching, porous and amorphous electrodes were obtained and then subjected to a slow oxidative stage to avoid ignition. The structure, composition, morphology and electrochemical characteristics of the electrodes were studied. The leached samples showed a high exchange current density indicating that are good catalysts for the Hydrogen Evolution Reaction (HER), a property enhanced by the adsorption of hydrogen during the leaching process which facilitated the hydrogen reduction overall reaction.
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 16, August 2010, Pages 8457–8462