MULTI-PRINCIPAL ELEMENT POROUS ALLOY AND PREPARATION METHOD, AND POROUS ELECTRODE FOR ELECTROLYZING SEAWATER

The present invention relates to a multi-principal element porous alloy and a preparation method, and a porous electrode for electrolyzing seawater. The preparation method for the multi-principal element porous alloy comprises: smelting to obtain an alloy having the nominal compositions of FeaCobNic...

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Bibliographische Detailangaben
Hauptverfasser:	LV, Zhaoping, LI, Zhibin, WANG, Hui, LIU, Xiongjun, WU, Yuan
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ALLOYS APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The present invention relates to a multi-principal element porous alloy and a preparation method, and a porous electrode for electrolyzing seawater. The preparation method for the multi-principal element porous alloy comprises: smelting to obtain an alloy having the nominal compositions of FeaCobNicNbdTieTafHfgZrhMx as a precursor; and then selectively removing active phases in the precursor by means of a chemical/electrochemical dealloying method to prepare the multi-principal element porous alloy. The multi-principal element porous alloy can be directly used as an electrode for electrolyzing seawater, the overpotentials of an oxygen evolution reaction (OER) and a hydrogen evolution reaction (HER) under an industrial electrolytic current density are respectively 461 mV and 178 mV, and an OER stable operation is performed for more than 1600 h under the current density. The present invention has great application prospects in the aspect of electrode devices for electrolyzing seawater for hydrogen production. L