2026-06-01T06:16:59Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/198422026-02-03T12:25:17Zcom_10630_2254col_10630_37959
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Cerrillo-González, María del Mar
author
Acedo-Bueno, Luis Fernando
author
Villén-Guzmán, María Dolores
author
Paz-García, Juan Manuel
author
Rodríguez-Maroto, José Miguel
2020-09-29T11:56:54Z
2020-09-29T11:56:54Z
2020-09-29
https://hdl.handle.net/10630/19842
The growing use of Lithium-Ion batteries (LIBs) in the field of electric vehicles and renewable energy storage entails the production of toxic and environmental hazardous wastes. Furthermore, some components in these batteries are classified as Critical Raw Material due to their supply risk and economic importance. Hence, the development of more efficient process to recycle LIBs is gaining importance for economic aspects and environmental protection.
In this work, the hydrometallurgical leaching process for the recovery of valuable metals from the cathode active materials of spent LIBs batteries was evaluated. Batch Experiments were carried out using LiCoO2 which is one of the most used cathodes in lithium-ion batteries. The selection of the extracting agent, its concentration, the reducing agent and the solid-liquid ratio are some of the parameters under study in this research.
Hydrochloric acid was used as the extracting agent and its concentration was modified from 0.1 M to 2.5 M while solid-liquid ratio (50 g/L), temperature (25 ºC) were fixed in all of them. The percentage of metal extracted was 31% of Co and 66% of Li for 0.1 M HCl solution. Extraction with 2.5M HCl solution was similar, 35% and 71% of Co and Li, respectively, but extracted in just 90 min, unlike the 72 h in the previous test. An experiment using H2O2 as a reducing agent was also performed, reaching a high percentage of metal extracted: 93% of Co and 100% of Li for a 0.6%vol of H2O2
Although tests have been carried out using LiCoO2, the technique can be applied to different kinds of cathode from spent batteries. The results suggested that the recovery of Co and Li is viable at optimized experimental conditions. The results indicated clearly that the dissolution of LiCoO2 particles is faster and more extensive when using more acidic extracting solution and stronger reducing agents, such as hydrogen peroxide.
eng
Baterías - Reciclado
Residuos industriales - Lixiviación
Operaciones de reciclado (Tecnología química)
Leaching of LiCoO2 using H2O2 as reductant
conference output
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URL
https://riuma.uma.es/bitstreams/d14c5770-ba94-45c1-9982-a5e7f1a2bdb8/download
File
MD5
918d76b633300528329ac62a83e92e10
43072
application/pdf
ICP 20 Leaching of LiCoO2 using H2O2 as reductant_RIUMA-1.pdf