Optimization of the hydrogen binding energy by controlling the surface electronic structure of electrocatalysts is of great significance in the hydrogen oxidation reaction(HOR)in alkaline electrolytes.Herein,we demons...Optimization of the hydrogen binding energy by controlling the surface electronic structure of electrocatalysts is of great significance in the hydrogen oxidation reaction(HOR)in alkaline electrolytes.Herein,we demonstrated that the surface electronic structure of PtRu bimetallic nanoparticles could be finely tuned through the alloying degree;this led to enhanced HOR performance in an alkaline solution.The optimized Pt_(0.65)Ru_(0.35) with high alloying degree exhibited the exchange current density of 4.16 A m^(-2),which was about 1.5 and 2.2 times those of Pt_(0.74)Ru_(0.26) with a low alloying degree(2.75 A m^(-2))and Pt/C(1.89 A m^(-2)),respectively.展开更多
基金support received from the National Key Basic Research Program of China(2016YFA0200700,Z.Y.T.)National Natural Science Foundation of China(21890381 and 21721002,Z.Y.T.)+1 种基金Frontier Science Key Project of Chinese Academy of Sciences(QYZDJ-SSW-SLH038,Z.Y.T.)K.C.Wong Education Foundation(Z.Y.T.).
文摘Optimization of the hydrogen binding energy by controlling the surface electronic structure of electrocatalysts is of great significance in the hydrogen oxidation reaction(HOR)in alkaline electrolytes.Herein,we demonstrated that the surface electronic structure of PtRu bimetallic nanoparticles could be finely tuned through the alloying degree;this led to enhanced HOR performance in an alkaline solution.The optimized Pt_(0.65)Ru_(0.35) with high alloying degree exhibited the exchange current density of 4.16 A m^(-2),which was about 1.5 and 2.2 times those of Pt_(0.74)Ru_(0.26) with a low alloying degree(2.75 A m^(-2))and Pt/C(1.89 A m^(-2)),respectively.
