Soft X-ray characterization technique for Li batteries under operating conditions.
O K-edge and Co L-edge near-edge X-ray absorption fine structure has been used to examine the cathode of an intact solid-state lithium ion battery. The novel technique allowed for the simultaneous acquisition of partial electron yield and fluorescence yield data during the first charge cycle of a LiCoO(2)-based battery below the intercalation voltage. The chemical environments of oxygen and cobalt at the surface are shown to differ chemically from those in the bulk. The present design enables a wide variety of in situ spectroscopies, microscopies and scattering techniques.
Petersburg
Cole F
CF
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
Daniel
Robert C
RC
Jaye
Cherno
C
Fischer
Daniel A
DA
Alamgir
Faisal M
FM