The importance of properly correcting the electric double layer effect in unravelling the intrinsic kinetics of electrode reactionsOA
Understanding the effects of the electric double layer(EDL)on electrode kinetics is of great importance for improving the performance of electrochemical devices.In this work,by using the HER at Au(111)in x M HClO_(4)+(1-x)M NaClO_(4)or NaOH as a model reaction,the intrinsic kinetic parameters for HER has been unveiled based on the modified Poisson-Nernst-Planck equations and the Frumkin-Butler-Volmer theory.Our analysis reveals that i)the EDL effects induced changes in proton concentration c_(H^(+))^(RP)and electric potential φ^(RP)at the reaction plane are the main reason for the difference of HER current in the cases with x M HClO_(4)and x M HClO_(4)+(1-x)M NaClO_(4);ii)the EDL effects are the main origin for the difference in HER current between acidic and alkaline solutions at the Au(111).Our work demonstrates that microkinetic simulation with properly considering the EDL effects is important for unravelling intrinsic reaction kinetics of electrocatalytic reactions.
Bingyu Liu;Erfei Zhen;Wei Chen;Lulu Zhang;Jun Cai;Yanxia Chen
Hefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,ChinaHefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,ChinaHefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,ChinaHefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,ChinaHefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,ChinaHefei National Research Center for Physical Sciences at Microscale,Department of Chemical Physics,University of Science and Technology of China,Hefei 230026,China
化学化工
Hydrogen evolution reactionProton dischargeAu(111)electrode-electrolyte interfaceElectric double layer effects
《Nano Materials Science》 2026 (4)
P.866-872,7
supported by National Natural Science Foundation of China(Nos.22172151 and 22372154)。
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