High capacity Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} cathode materials via a carbonate co-precipitation method.
Journal Article
·
· J. Power Sources
Spherical Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} has been synthesized by a carbonate co-precipitation method. The Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} with a phase-pure and well-ordered layered structure was synthesized by heat-treatment of a spherical (Ni{sub 0.25}Mn{sub 0.75}){sub 3}O{sub 4} precursor with LiOH {center_dot} H{sub 2}O. The average particle size of the Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} powders was approximately 20 {micro}m and the size distribution was quite narrow due to the homogeneity of the (Ni{sub 0.25}Mn{sub 0.75})CO{sub 3}. The Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} electrode calcined at 900 C delivered an initial discharge capacity of approximately 270 mAh g{sup -1} in the voltage range of 2.0-4.6 V. The differential scanning calorimetry (DSC) results for the Li[Li{sub 0.2}Ni{sub 0.2}Mn{sub 0.6}]O{sub 2} prepared at 900 C showed a major exothermic reaction at 270 C.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- EE
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 953450
- Report Number(s):
- ANL/CMT/JA-58111
- Journal Information:
- J. Power Sources, Journal Name: J. Power Sources Journal Issue: 2 ; Nov. 22, 2006 Vol. 162; ISSN JPSODZ; ISSN 0378-7753
- Country of Publication:
- United States
- Language:
- ENGLISH
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