NiCoP selenization for enhanced oxygen evolution reaction in alkaline electrolyte

The electrocatalytic performance of bimetallic NiCo phosphide for oxygen evolution can be boosted via facile selenization by forming a crystal structure of metal phosphide and metal selenide. In the alkaline electrolyte, small overpotentials of 280 mV to drive 10 mA cm−2 were required, much smaller...

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Published in:Catalysis communications 2022-03, Vol.163, p.106407, Article 106407
Main Authors: He, Runze, Li, Jiaxin, Feng, Ligang
Format: Article
Language:English
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Oxygen evolution reaction
Phosphide
Selenization
Water splitting reaction
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description The electrocatalytic performance of bimetallic NiCo phosphide for oxygen evolution can be boosted via facile selenization by forming a crystal structure of metal phosphide and metal selenide. In the alkaline electrolyte, small overpotentials of 280 mV to drive 10 mA cm−2 were required, much smaller than that of NiCo phosphide and NiCo precursor. The improved performance was attributed to the increased electrochemical surface area that exposed more active sites. The high electrocatalytic efficiency of the active sites was also in line with the enhanced specific activity and turnover frequency values. In addition, high catalytic stability was also observed. [Display omitted] •NiCoP selenization improved oxygen evolution ability in alkaline electrolyte.•A crystal structure of a mixed metal phosphide and metal selenide in the system.•Synergistic effect between selenide and phosphide boosts the catalytic activity.•High catalytic efficiency was supported by specific activity and TOF value.
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subjects Oxygen evolution reaction
Phosphide
Selenization
Water splitting reaction
title NiCoP selenization for enhanced oxygen evolution reaction in alkaline electrolyte
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