特集： 放射光を用いた電池および燃料電池の研究
放射光によるリチウムイオン二次電池の反応解析
キーワード:
Li-ion battery,
positive electrodes,
X-ray absorption spectroscopy,
first principles calculation
2016 年 37 巻 2 号 p. 60-65
詳細
2016 年 37 巻 2 号 p. 60-65
In situ X-ray absorption spectroscopy (XAS) at transition-metal K-edges has been most widely used to analyze the redox-reaction during battery operations by monitoring valence change that is determined by absorption edge shift. However, current analysis of XAS spectrum is simply to compare the absorption edge position with those of reference materials, and thus, we could not always monitor true valence changes of the materials. To overcome such issue, we newly proposed to apply combined XAS analysis method of K-edge X-ray absorption spectroscopy and first principals calculation.
