首页|Boosting alkaline hydrogen evolution via spontaneous built-in electric field
Boosting alkaline hydrogen evolution via spontaneous built-in electric field
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The electrochemical reaction rate strongly depends on the pH of the solution and the relatively slug-gish alkaline hydrogen evolution reaction(HER)process,attributed to alterations in the type of proton donor and binding energy,has consistently presented a significant challenge.Here,we report a new method for boosting alkaline HER via spontaneous built-in electric field strat-egy employed on cobalt phosphide nanofibers(NFs)elec-trocatalyst.The anion-cation dual-introduction of V and N on the NFs not only increases the electrochemical surface area but also enhances the catalytic activity,thereby ele-vating the performance of alkaline HER.An investigation strategy combining experiments and calculations revealed the charge transfer law between multiple active compo-nents and the enhanced regulation mechanism of alkaline HER process,ultimately achieving a nearly twice increase in reaction overpotential of the as-fabricated catalyst at-10 mA·cm-2.This new approach provides a potential strategy for improving the efficiency of core catalyst for energy conversion technologies.
Multiple active sitesBuilt-in electric felidChemical substitutionHydrogenElectrocatalyst
Ze-Peng Lv、Da-He Zhang、Meng-Lu Zang、Shao-Long Li、Ji-Lin He、Jian-Xun Song
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