ZrO{sub 2}- and Li{sub 2}ZrO{sub 3}-stabilized spinel and layered electrodes for lithium batteries.
Strategies for countering the solubility of LiMn{sub 2}O{sub 4} (spinel) electrodes at 500 {sup o}C and for suppressing the reactivity of layered LiMO{sub 2} (M = Co, Ni, Mn, Li) electrodes at high potentials are discussed. Surface treatment of LiMn{sub 2}O{sub 4} with colloidal zirconia (ZrO{sub 2}) dramatically improves the cycling stability of the spinel electrode at 50 {sup o}C in Li/LiMn{sub 2}O{sub 4} cells. ZrO{sub 2}-coated LiMn{sub 0.5}Ni{sub 0.5}O{sub 2} electrodes provide a superior capacity and cycling stability to uncoated electrodes when charged to a high potential (4.6 V vs Li{sup 0}). The use of Li{sub 2}ZrO{sub 3}, which is structurally more compatible with spinel and layered electrodes than ZrO{sub 2} and which can act as a Li{sup +}-ion conductor, has been evaluated in composite 0.03Li{sub 2}ZrO{sub 3} - 0.97LiMn{sub 0.5}Ni{sub 0.5}O{sub 2} electrodes; glassy Li{sub x}ZrO{sub 2 + x/2} (0<x{<=}2) products can be produced from colloidal ZrO{sub 2} for surface coatings.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; EE
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 961373
- Report Number(s):
- ANL/CMT/JA-47190
- Journal Information:
- Electrochem. Commun., Journal Name: Electrochem. Commun. Journal Issue: 9 ; Sep. 2003 Vol. 5; ISSN 1388-2481
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Layered xLiMO{sub 2}{lg_bullet}(1-x)Li{sub 2}M'O{sub 3} electrodes for lithium batteries : a study of 0.95LiMn{sub 0.5}O{sub 2}{lg_bullet}0.05Li{sub 2}TiO{sub 3}.
Preparation and electrochemical properties of Li-rich spinel-type lithium manganate coated LiMn{sub 2}O{sub 4}