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Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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High-performance ZrO2-coated LiNiO2 cathode material

Cited 49 times inthomson ciCited 58 times inthomson ci
Title
High-performance ZrO2-coated LiNiO2 cathode material
Author
Cho, JaephilKim, TJKim, YJPark, B
Keywords
LITHIUM CELLS; INSERTION; BATTERIES; LICOO2
Issue Date
2001-10
Publisher
ELECTROCHEMICAL SOC INC
Citation
ELECTROCHEMICAL AND SOLID STATE LETTERS, v.4, no.10, pp.A159 - A161
Abstract
LiNiO2 with excellent structural stability and electrochemical reversibility is obtained by sol-gel coating of ZrO2. Significantly reduced lattice distortion is found in ZrO2-coated LiNiO2, showing several-times-lower changes in the lattice constants during charging, compared to that of bare sample. The thin-film encapsulation by ZrO2, with higher Zr concentration at the particle surface within similar to1 mum, can effectively suppress the lattice distortion and thereby phase transitions. The improved electrochemical reversibility is well demonstrated by the cycle-life performance in the coin-type half-cells (Li/coated-LiNiO2 and Li/bare-LiNiO2) between 4.3 and 2.75 V, showing only 2% capacity loss in the ZrO2-coated sample after 70 cycles.
URI
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DOI
10.1149/1.1398556
ISSN
1099-0062
Appears in Collections:
ECHE_Journal Papers
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