Effects of pH on the dispersion and cell performance of LiCoO2 cathodes based on the aqueous process

Autor:	Yi-Ling Tung, Jyh-Tsung Lee, Chang-Rung Yang, Chia-Chen Li
Rok vydání:	2007
Předmět:	Aqueous solution Materials science Mechanical Engineering Inorganic chemistry Microstructure Cathode Lithium battery law.invention chemistry.chemical_compound chemistry Mechanics of Materials law Electrode Homogeneity (physics) Slurry General Materials Science Lithium cobalt oxide
Zdroj:	Journal of Materials Science. 42:5773-5777
ISSN:	1573-4803 0022-2461
Popis:	The effects of the pH of a water-based slurry on the dispersion homogeneity and cell performance of lithium cobalt oxide (LiCoO2) cathodes were investigated. Based on the results of dispersion and cell performance characterizations, it is known that the pH will affect the dispersion homogeneity of cathode materials and the resulting electronic conduction, adhesion strength and C-rate capability of as-prepared electrodes. For the LiCoO2 aqueous slurry, the as-prepared electrode sheet is homogeneous at its initial equilibrium pH of 11.6 which is a safe distance away from its iso-electric point (IEP). However, this pH value is too high; the slurry would significantly react with the aluminum substrate to damage the microstructures of the sheets and the corresponding cell performances. Hence, the pH of an as-prepared LiCoO2 slurry should be adjusted lower and kept away from the IEP as well.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57c2868800243a196ba0ebff495c1667 https://doi.org/10.1007/s10853-006-1172-7 Zobrazit plný text záznamu