鋰離子二次電池鋰錳氧化物陰極材料之結構安定性與乳膠法製備及特性分析
Other Title
Structural Stability, Emulsion Synthesis, and Characterization of Lithium Manganese
Oxide Submicron Powder for the Cathode Materials in Lithium-ion Secondary Batteries
Oxide Submicron Powder for the Cathode Materials in Lithium-ion Secondary Batteries
Date Issued
1999
Date
1999
Author(s)
DOI
882218E002026
Abstract
Lithium manganese oxide as the cathode
material used in lithium ion-batteries was
prepared by a novel emulsion process. By using a
magnetic mixer, the single phase of LiMn2 O4 with
high crystallinity was obtained at 800 o C. This
powder exhibits a Fd3m structure which is
consistent with that simulated by a computer
program. With increasing the cation concentration,
pure LiMn2 O4 could not be obtained, and an
impure phase Mn2 O3 existed in speciemens. To
overcome this cumbersome problem, a homogenilizer was used. A well-mixed solution
was prepared and pure LiMn2 O4 was synthesized.
LiMn2 O4 powder prepared by a homognilizer has
a higher crystallinity and a smaller particle size
than that prepared by a magnetic stirrer. The
prepared LiMn2 O4 powder has a high discharge
capacity (120.4mAh/g) at the first run, and this
powder also exhibits good cyclability.
Subjects
Lithium ion Battery
Powder
Emulsion
Cathode Material
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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