LiCu{sub x}Mn{sub 2{minus}x}O{sub 4} spinels (0.1 {le} x {le} 0.5): A new class of cathode materials for Li batteries. 2: In situ measurements
Journal Article
·
· Journal of the Electrochemical Society
- Covalent Associates, Inc., Woburn, MA (United States)
- Brookhaven National Lab., Upton, NY (United States)
Electrochemical data obtained from lithium cycling in LiCu{sub x}Mn{sub 2{minus}x}O{sub 4} spinels (0.1 {le} x {le} 0.5) show a remarkable, highly reversible, electrochemical cycling behavior at 4.9 V. In situ X-ray absorption near edge structure spectroscopy revealed that this ultrahigh voltage is due to the existence of the Cu{sup 2+}/Cu{sup 3+} redox couple. The origin of the high stability at the 5 V region was studied with the in situ X-ray diffraction technique. It was found that the unit cell dimension undergoes minimal change during charge-discharge cycles at the 5 V plateau.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Department of the Army, Washington, DC (United States); USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 659168
- Journal Information:
- Journal of the Electrochemical Society, Vol. 145, Issue 10; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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