Fabrication of thin film LiCo0.5Ni0.5O2 cathode for Li rechargeable microbattery

Seung Joo Lee; Jong Ki Lee; Dae Woo Kim; Hong Koo Baik; Sung Man Lee

doi:10.1149/1.1837230

Fabrication of thin film LiCo_0.5Ni_0.5O₂ cathode for Li rechargeable microbattery

Seung Joo Lee, Jong Ki Lee, Dae Woo Kim, Hong Koo Baik, Sung Man Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

Abstract

LiCo_0.5Ni_0.5O₂ thin film cathodes were fabricated by electron beam evaporation and postannealing in oxygen atmosphere. As-deposited film showed almost amorphous characteristics, but included some crystalline phases. Hexagonal phase of LiCo_0.5Ni_0.5O₂ was formed in the films annealed between 500 and 700°C. The crystallinity of the film was improved as the annealing temperature increased to 700°C. Open-circuit voltage (OCV) curves were measured. Especially, the film annealed at 700°C for 10 min showed a similar OCV curve to that of bulk powder cathode. It can be suggested that LiCo_0.5Ni_0.5O₂ thin film is suitable for the cathode of Li rechargeable microbattery.

Original language	English
Pages (from-to)	L268-L270
Journal	Journal of the Electrochemical Society
Volume	143
Issue number	11
DOIs	https://doi.org/10.1149/1.1837230
Publication status	Published - 1996 Nov

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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title = "Fabrication of thin film LiCo0.5Ni0.5O2 cathode for Li rechargeable microbattery",

abstract = "LiCo0.5Ni0.5O2 thin film cathodes were fabricated by electron beam evaporation and postannealing in oxygen atmosphere. As-deposited film showed almost amorphous characteristics, but included some crystalline phases. Hexagonal phase of LiCo0.5Ni0.5O2 was formed in the films annealed between 500 and 700°C. The crystallinity of the film was improved as the annealing temperature increased to 700°C. Open-circuit voltage (OCV) curves were measured. Especially, the film annealed at 700°C for 10 min showed a similar OCV curve to that of bulk powder cathode. It can be suggested that LiCo0.5Ni0.5O2 thin film is suitable for the cathode of Li rechargeable microbattery.",

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AU - Lee, Seung Joo

AU - Lee, Jong Ki

AU - Kim, Dae Woo

AU - Baik, Hong Koo

AU - Lee, Sung Man

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N2 - LiCo0.5Ni0.5O2 thin film cathodes were fabricated by electron beam evaporation and postannealing in oxygen atmosphere. As-deposited film showed almost amorphous characteristics, but included some crystalline phases. Hexagonal phase of LiCo0.5Ni0.5O2 was formed in the films annealed between 500 and 700°C. The crystallinity of the film was improved as the annealing temperature increased to 700°C. Open-circuit voltage (OCV) curves were measured. Especially, the film annealed at 700°C for 10 min showed a similar OCV curve to that of bulk powder cathode. It can be suggested that LiCo0.5Ni0.5O2 thin film is suitable for the cathode of Li rechargeable microbattery.

AB - LiCo0.5Ni0.5O2 thin film cathodes were fabricated by electron beam evaporation and postannealing in oxygen atmosphere. As-deposited film showed almost amorphous characteristics, but included some crystalline phases. Hexagonal phase of LiCo0.5Ni0.5O2 was formed in the films annealed between 500 and 700°C. The crystallinity of the film was improved as the annealing temperature increased to 700°C. Open-circuit voltage (OCV) curves were measured. Especially, the film annealed at 700°C for 10 min showed a similar OCV curve to that of bulk powder cathode. It can be suggested that LiCo0.5Ni0.5O2 thin film is suitable for the cathode of Li rechargeable microbattery.

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