Electrochemical impedance spectroscopy studies of lithium diffusion in doped manganese oxide
Conference
·
OSTI ID:238345
Cathode performance is critical to lithium ion rechargeable battery performance; effects of doping lithium manganese oxide cathode materials on cathode performance are being investigated. In this paper, Li diffusion in Al-doped LiMn{sub 2}O{sub 4} was studied and found to be controlled by the quantity of Al dopant. Electrochemical cycling was conducted at 0.5mA/cm{sub 2}; electrochemical impedance spectra were taken at open circuit potential, with impedance being measured at 65 kHz-0.01 Hz. As the Al dopant level was increased, the Li diffusion rate decreased; this was attributed to the decreased lattice parameter of the doped oxide.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 238345
- Report Number(s):
- SAND-96-1145C; CONF-9606212-1; ON: DE96010553
- Resource Relation:
- Conference: 8. international meeting on lithium batteries, Nagoya (Japan), 16-21 Jun 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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