Electrochemical and in situ XANES studies of a LiNi0.8Co0.17Al0.03O2 cathode material
Journal
Solid State Communications
Journal Volume
132
Journal Issue
3-4
Pages
273-277
Date Issued
2004
Author(s)
Prince, A. A. M.
Mylswamy, S.
Wang, C. Y.
Chang, S. C.
Lin, C. H.
Lin, Y. K.
Shen, C. H.
Huang, S. M.
Lee, J. F.
Abstract
Structural and electrochemical studies have been carried out on LiNi 0.8Co0.17Al0.03O2 cathode material. X-ray diffraction refinement results confirmed that the material is in a pure phase having a layered structure. The electrochemical study on LiNi 0.8Co0.17Al0.03O2 shows high specific discharge capacity with good cycle life upon different charge-discharge. In situ X-ray absorption near edge structure analysis confirmed the transformation of Ni state from Ni3+ to Ni 4+ during the delithiation process without affecting the valency of Co. The electrochemical results revealed that the doping of Co3+ and Al3+ stabilized the layered structure considerably during delithiation process. © 2004 Elsevier Ltd. All rights reserved.
SDGs
Type
journal article