The small organic molecule electro-oxidation(OMEO) and the hydrogen evolution(HER) are two important half-reactions in direct liquid fuel cells(DLFCs) and water electrolyzers,respectively,whose performance is largely ...The small organic molecule electro-oxidation(OMEO) and the hydrogen evolution(HER) are two important half-reactions in direct liquid fuel cells(DLFCs) and water electrolyzers,respectively,whose performance is largely hindered by the low activity and poor stability of electrocatalysts.Herein,we demonstrate that a simple phosphorization treatment of commercially available palladium-nickel(PdNi) catalysts results in multifunctional ternary palladium nickel phosphide(PdNiP) catalysts,which exhibit substantially enhanced electrocatalytic activity and stability for HER and OMEO of a number of molecules including formic acid,methanol,ethanol,and ethylene glycol,in acidic and/or alkaline media.The improved performance results from the modification of electronic structure of palladium and nickel by the introduced phosphorus and the enhanced corrosion resistance of PdNiP.The simple phosphorization approach reported here allows for mass production of highly-active OMEO and HER electrocatalysts,holding substantial promise for their large-scale application in direct liquid fuel cells and water electrolyzers.展开更多
Preparation of metallic glass has experienced several decades. Some methods have been developed to produce metallic glass, including liquid quenching, vapor deposition, etc. However, with these methods only the foils,...Preparation of metallic glass has experienced several decades. Some methods have been developed to produce metallic glass, including liquid quenching, vapor deposition, etc. However, with these methods only the foils, powders or films can be obtained in amorphous state, while the bulk metallic glass with three dimensions cannot be obtained.展开更多
基金financial support of China Scholarship Council,China(Grant No.201806150015)the financial support of the Portuguese Foundation of Science and Technology through TACIT project(Grant No.02/SAICT/2017/028837)the National Innovation Agency of Portugal through Baterias 2030 project(Grant No.POCI-01-0247FEDER-046109)to this work。
文摘The small organic molecule electro-oxidation(OMEO) and the hydrogen evolution(HER) are two important half-reactions in direct liquid fuel cells(DLFCs) and water electrolyzers,respectively,whose performance is largely hindered by the low activity and poor stability of electrocatalysts.Herein,we demonstrate that a simple phosphorization treatment of commercially available palladium-nickel(PdNi) catalysts results in multifunctional ternary palladium nickel phosphide(PdNiP) catalysts,which exhibit substantially enhanced electrocatalytic activity and stability for HER and OMEO of a number of molecules including formic acid,methanol,ethanol,and ethylene glycol,in acidic and/or alkaline media.The improved performance results from the modification of electronic structure of palladium and nickel by the introduced phosphorus and the enhanced corrosion resistance of PdNiP.The simple phosphorization approach reported here allows for mass production of highly-active OMEO and HER electrocatalysts,holding substantial promise for their large-scale application in direct liquid fuel cells and water electrolyzers.
文摘Preparation of metallic glass has experienced several decades. Some methods have been developed to produce metallic glass, including liquid quenching, vapor deposition, etc. However, with these methods only the foils, powders or films can be obtained in amorphous state, while the bulk metallic glass with three dimensions cannot be obtained.
