Trends in the exchange current for hydrogen evolution
Trends in the exchange current for hydrogen evolution
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DOI：
10.1149/1.1856988
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发表时间：
2005-01-01
影响因子：
3.9
通讯作者：
Norskov, JK
中科院分区：
文献类型：
--
作者：
Norskov, JK;Bligaard, T;Norskov, JK
介绍了一个氢在一些过渡金属和贵金属密排表面上化学吸附能的密度泛函理论数据库。键能被用来理解析氢交换电流的趋势。当测得的交换电流被绘制为计算的氢吸附能的函数时，得到一个火山曲线，并开发了一个简单的动力学模型来了解火山的起源。火山曲线也与Pt是析氢最有效的电催化剂相一致。(c)2005年电化学学会。[DOI：10.1149/1.1856988]保留所有权利。
A density functional theory database of hydrogen chemisorption energies on close packed surfaces of a number of transition and noble metals is presented. The bond energies are used to understand the trends in the exchange current for hydrogen evolution. A volcano curve is obtained when measured exchange currents are plotted as a function of the calculated hydrogen adsorption energies and a simple kinetic model is developed to understand the origin of the volcano. The volcano curve is also consistent with Pt being the most efficient electrocatalyst for hydrogen evolution. (c) 2005 The Electrochemical Society. [DOI: 10.1149/1.1856988] All rights reserved.