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Synthesis of $LiCoO_{2}$ Nanoparticles From Leach Liquor of Lithium Ion Battery Wastes by Flame Spray Pyrolysis  

Lee Churl Kyoung (School of Material & System Engineering, Kumoh National Institute of Technology)
Chang Hankwon (Material Processing & Utilization Div., Korea Institute of Geoscience and Mineral Resources)
Jang Hee Dong (Material Processing & Utilization Div., Korea Institute of Geoscience and Mineral Resources)
Sohn Jeong-Soo (Material Processing & Utilization Div., Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.14, no.6, 2005 , pp. 37-43 More about this Journal
Abstract
[ $LiCoO_{2}$ ] nanoparticles were synthesized from leach liquor of lithium ion battery waste using flame spray pyrolysis. Electrode Materials containing lithium and cobalt could be concentrated with thermal and mechanical treatment. After dissolution of used cathode materials of the lithium battery with nitric acid, the molar ratio of Li/Co in the leach liquor was adjusted at 1.0 by adding a fresh $LiNO_{3}$ solution. The nanoparticles synthesized by the flame spray pyrolysis showed clear crystallinity and were nearly spherical, and their average primary particle diameters ranged from 11 to 35 nm. The average particle diameter increased with an increase in the molar concentration of the precursor. Raising the maximum flame temperature by controlling the gas flow rates also led to an increase in the average diameter of the particles. The $LiCoO_{2}$ powder was proved to have good characteristics as cathode active materials in charge/discharge capacity and cyclic performance.
Keywords
Flame spray pyrolysis; Spent lithium ion battery; Recycling;
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