关键词: X光吸收光谱, 纳米粒子, 双金属, 锂电池, 电极

Abstract: The aim of this review is to introduce the characterization of energy materials by X-ray absorption spectroscopy (XAS) . This technique allows us to probe changes in the valance state and the local environment of the targeted element in the active material; thereby,leading to a better understanding of its electrochemical behavior,and hopefully showing the way to improved performance. Here,electrocatalysts for fuel cells and active electrode materials for Li-ion batteries are taken as the examples that illustrate the capability of XAS and allow observation and theory to be correlated with electrochemical phenomena.

Key words: X-ray absorption spectroscopy, nanoparticles, bimetallic, Li-ion battery, electrode