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- Title
Electrochemical studies of LiCrFeMnO in an aqueous electrolyte.
- Authors
Xu, Wanmei; Yuan, Anbao; Wang, Yuqin
- Abstract
In this paper, LiCrFeMnO ( x = 0, 0.05, 0.1) electrode materials were prepared by sol-gel technique and characterized by X-ray diffraction (XRD) and transmission electron microscopy or high-resolution transmission electron microscopy techniques. XRD results reveal that the Cr-Fe-co-doped LiCrFeMnO materials are phase-pure spinels. The electrochemical properties of the LiMnO, LiCrFeMnO, and LiCrFeMnO electrodes in 5 M LiNO aqueous electrolyte were investigated using cyclic voltammetry, AC impedance, and galvanostatic charge/discharge methods. In the current range of 0.5-2 A g, the specific capacity of the LiCrFeMnO electrode is close to that of the LiMnO electrode, but the specific capacity of the LiCrFeMnO electrode is obviously lower than that of the LiMnO electrode. When the electrodes are charge/discharge-cycled at the high current rate of 2 A g, the LiCrFeMnO electrode exhibits an initial specific capacity close to that of the LiMnO electrode, but its cycling stability is obviously prior to that of the LiMnO electrode.
- Subjects
ELECTRODES; SOL-gel processes; X-ray diffraction; TRANSMISSION electron microscopy; AQUEOUS electrolytes
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 2, p429
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-011-1347-2