23 A-size rechargeable battery employing LiCoO2 thin-film cathode

Chang, Hui-liang; Lee, T.J.; Lin, Sang; Jeng, Jian-Min

doi:10.1016/0378-7753(94)02111-f

Cited by 18 publications

(8 citation statements)

References 2 publications

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“…[1][2][3] For all solid-state microbatteries, transition metal oxide thin-films as cathode materials have been a major focus of research for their flexibility, safety and miniaturization. 4,5 However, the fibers are an attractive choice for use in microbatteries due to their easy manipulation, high aspect ratio and good electrochemical performance. 6,7 Compared to thin-films as electrode materials, the fibers exhibit some advantages such as better electrochemical performance, easy preparation and manipulation.…”

Section: Introductionmentioning

confidence: 99%

LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

Chen

Jiao

et al. 2007

J. Mater. Chem.

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Section: Introductionmentioning

confidence: 99%

LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

Chen

Jiao

et al. 2007

J. Mater. Chem.

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“…The advantages of the sol-gel method are homogeneity at the molecular level, control of stoichiometry, ease of doping, high deposition rate, and low cost. Chang et al 19 prepared lithium-cobalt(III) oxide films by a spraycoating process using a series of sols as precursors and different reaction conditions. Their procedure changed the microstructure of the films and affected the electrochemical performance of lithium ion batteries.…”

Section: Introductionmentioning

confidence: 99%

Lithium Cobalt Oxide (LiCoO₂) Nanocoatings by Sol−Gel Methods

Quinlan

Vidu

Predoană

et al. 2004

Ind. Eng. Chem. Res.

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Lithium cobalt oxide (LiCoO 2 ) was synthesized using two different sol-gel processes. The first method used stoichiometric molar ratios of cobalt 2-methoxyethoxide and lithium nitrate in alcoholic solutions; the second method used aqueous equimolar ratios of precursors of lithium nitrate and cobalt acetate with poly(ethylene glycol) (PEG) 200 as the chelating agent. Lithium cobalt oxide films were deposited on Si wafers and silica-soda-lime glass using a dipping technique. Based on differential thermal analysis/thermogravimetric analysis results, densification of the films was achieved by thermal treatment at both 500 and 800 °C in the case of silicon wafer substrates and at 500 °C for the silica-soda-lime glass. X-ray diffraction, spectroellipsometry, and atomic force microscopy were used to characterize the films. The correlation between the preparation procedure and the type of support on the structure and morphology of LiCoO 2 compound films is discussed. Uniform ultrathin films were obtained on the glass (heat treated at 500 °C) and Si wafer (heat treated at 800 °C). The alcoholic synthetic procedure was also used to coat particles of LiMn 2 O 4 with films of LiCoO 2 . The sol-gel method resulted in partial coverage of LiMn 2 O 4 by LiCoO 2 as determined by elemental mapping with scanning electron microscopy.

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“…Rechargeable thin film batteries have great potential in terms of their application to electronic devices such as microelectro-mechanical systems (MEMS), smart cards, and micro power sources for metal-oxide-semiconductor (MOS) capacitors [1][2][3]. One major reason for this is that they are completely solid state, no gas is generated during their operation, and they can be fabricated in a variety of shapes.…”

Section: Introductionmentioning

confidence: 99%

Dependence of Al2O3 coating thickness and annealing conditions on microstructural and electrochemical properties of LiCoO2 film

et al. 2010

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We studied the dependence of Al 2 O 3 coating thickness and annealing conditions on the surface morphology and electrochemical properties of Al 2 O 3 coated LiCoO 2 films. The optimum coating thickness allowing for the highest capacity retention was about 24 nm. A sample consisting of Al2O3 coated on annealed LiCoO2 film with additional annealing at 400°C had a uniform coating layer between the coating materials and cathode films. This sample showed the best capacity retention of ~91 % with a charge-cut off of 4.5 V after 30 cycles, while the bare cathode film showed a capacity retention of ~32 % under the same conditions. The formation of second phases such as Co-Al-O was observed in the coating films by X-ray photoelectron spectroscopy (XPS). The Co-Al-O containing samples showed a higher initial capacity because of their smaller grain size, but less capacity retention than the Al2O3 containing samples.

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23 A-size rechargeable battery employing LiCoO2 thin-film cathode

Cited by 18 publications

References 2 publications

LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

Lithium Cobalt Oxide (LiCoO₂) Nanocoatings by Sol−Gel Methods

Dependence of Al2O3 coating thickness and annealing conditions on microstructural and electrochemical properties of LiCoO2 film

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23 A-size rechargeable battery employing LiCoO2 thin-film cathode

Cited by 18 publications

References 2 publications

LiCoO2–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

LiCoO2–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

Lithium Cobalt Oxide (LiCoO2) Nanocoatings by Sol−Gel Methods

Dependence of Al2O3 coating thickness and annealing conditions on microstructural and electrochemical properties of LiCoO2 film

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Product

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LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

LiCoO₂–MgO coaxial fibers: co-electrospun fabrication, characterization and electrochemical properties

Lithium Cobalt Oxide (LiCoO₂) Nanocoatings by Sol−Gel Methods