Synthesis and characterization of lithiated nickel based metal oxides as positive electrode materials for lithium ion batteries

Conference · Sat Jul 01 04:00:00 EDT 2000

OSTI ID:20086860

Fujitani, S; Fujimoto, H; Nohma, T; Nishio, K

LiN{sub 1{minus}x}Co{sub x}O{sub 2} (x = 0.2, 0.3, 0.4) was synthesized through a sintering process from two different types of source materials of nickel and cobalt, namely each respective hydroxide and oxide, and composite hydroxide. Influence of the difference on charge-discharge characteristics, crystal structure and distribution of the metal elements was investigated. The composite hydroxides formulated in Ni{sub 1{minus}x}Co{sub x}(OH){sub 2} as the source material brought better homogenized composite lithiated nickel based metal oxides exhibiting the larger specific discharge capacity. Further modification of LiNi{sub 0.6}Co{sub 0.4}O{sub 2} by manganese through sintering from the composite hydroxide including manganese brought a good charge-discharge cycle performance as well as a high discharge capacity of 160 mAh/g level. A cylindrical test cell of 18mm in diameter and 65mm in height using the LiNi{sub 0.6}Co{sub 0.3}Mn{sub 0.1}O{sub 2} exhibited discharge capacity of 1,700mAh which is larger than that using LiCoO{sub 2}, and also exhibited a competitive charge-discharge cycle performance to commercialized lithium ion batteries.

• Research Organization: Sanyo Electric Co., Ltd., Hirakata, Osaka (JP)
• OSTI ID: 20086860
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
CATHODES
COBALT HYDROXIDES
COBALT OXIDES
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
LITHIUM OXIDES
METAL-NONMETAL BATTERIES
NICKEL HYDROXIDES
NICKEL OXIDES