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- W3138686014 abstract "This work highlights the fact that the activity of an already active metal/surface, i.e. Ni, can be increased even further by combining it with metals/surfaces that exhibit low activity, i.e. Pt and Al, when used on their own. Combinatorial screening was conducted on plasma vapour deposited PtxNiyAlz thin-film ratios for the oxygen evolution reaction in alkaline medium. All co-deposited thin films were simultaneously evaluated employing a multichannel potentiostat with Pt9Ni56Al35 exhibiting the highest current at 1.39 V (SHE). Subsequent deposition on a glassy carbon insert followed by electrochemical characterization revealed that Pt9Ni56Al35 performed better than its constituent components in that it exhibited an overpotential of 487 mV at 10 mA cm−2 compared to 590 mV, 941 mV, and 1379 mV for the overpotentials of vapour deposited Ni, Pt and Al respectively. Subsequent evaluation of co-deposited Pt9Ni56Al35, as an electrocatalyst on a nickel woven mesh anode inside a membraneless divergent electrode-flow-through (DEFT™) alkaline electrolyser, resulted in a current density of 1198 mA cm−2 at a cell potential of 2 VDC. This represents the highest current density to date for a membraneless alkaline electrolyser." @default.
- W3138686014 created "2021-03-29" @default.
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- W3138686014 date "2021-05-01" @default.
- W3138686014 modified "2023-09-26" @default.
- W3138686014 title "On the electrocatalytic symbiotic synergism between Pt, Ni and Al in plasma vapour deposited PtxNiyAlz thin metal films for water electrolysis" @default.
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- W3138686014 doi "https://doi.org/10.1016/j.jpowsour.2020.229344" @default.
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