Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub>
The dissolution of LiCoO<sub>2</sub> (LCO) from spent lithium-ion batteries (LIBs) has been widely studied with organic and inorganic acids. Among these acids, HCl is the one that showed the best results when used at concentrations higher than 4 M. However, its higher cost compared with...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/5/727 |
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| author | D. Sebastián Drajlin Daniela S. Suarez Norman Toro Edelmira D. Gálvez Eliana G. Pinna Mario H. Rodriguez |
| author_facet | D. Sebastián Drajlin Daniela S. Suarez Norman Toro Edelmira D. Gálvez Eliana G. Pinna Mario H. Rodriguez |
| author_sort | D. Sebastián Drajlin |
| collection | DOAJ |
| description | The dissolution of LiCoO<sub>2</sub> (LCO) from spent lithium-ion batteries (LIBs) has been widely studied with organic and inorganic acids. Among these acids, HCl is the one that showed the best results when used at concentrations higher than 4 M. However, its higher cost compared with other acids is disadvantageous. Taking this into account, this work aims to perform a comparative study of the effect of different operational variables such as temperature, reaction time, leaching agent concentration (HCl) and reducing agent concentration (H<sub>2</sub>O<sub>2</sub>) on the dissolution efficiency of LCO for the systems HCl and HCl-H<sub>2</sub>O<sub>2</sub> to determine the optimal parameters to achieve a maximum dissolution in minimum time at low temperatures and reagent concentrations. Increasing temperature, time and concentration of the reagents had a positive effect on the dissolution of LCO. When working with HCl 1.8 M, the highest dissolution for LCO, 91.0% was obtained at 348 K for 60 min. Furthermore, a slightly higher oxide dissolution (93.0%) was obtained in a reducing medium at the same temperature in half the time and with a concentration of HCl more than ten times lower. This will allow us to propose an alternative process to the existing ones with economic and ecological advantages. |
| first_indexed | 2024-03-10T03:25:44Z |
| format | Article |
| id | doaj.art-18ddbb2b55634d719efe59b62890c06a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:25:44Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-18ddbb2b55634d719efe59b62890c06a2023-11-23T12:08:25ZengMDPI AGMetals2075-47012022-04-0112572710.3390/met12050727Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub>D. Sebastián Drajlin0Daniela S. Suarez1Norman Toro2Edelmira D. Gálvez3Eliana G. Pinna4Mario H. Rodriguez5Laboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), Instituto Interdisciplinario de Ciencias Básicas (ICB)-UNCuyo-CONICET-FCEN, Padre J. Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, ArgentinaLaboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), Instituto Interdisciplinario de Ciencias Básicas (ICB)-UNCuyo-CONICET-FCEN, Padre J. Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, ArgentinaFaculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1100000, ChileDepartamento de Ingeniería Metalúrgica y Minas, Universidad Católica del Norte, Antofagasta 1270709, ChileLaboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), Instituto Interdisciplinario de Ciencias Básicas (ICB)-UNCuyo-CONICET-FCEN, Padre J. Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, ArgentinaLaboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), Instituto Interdisciplinario de Ciencias Básicas (ICB)-UNCuyo-CONICET-FCEN, Padre J. Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, ArgentinaThe dissolution of LiCoO<sub>2</sub> (LCO) from spent lithium-ion batteries (LIBs) has been widely studied with organic and inorganic acids. Among these acids, HCl is the one that showed the best results when used at concentrations higher than 4 M. However, its higher cost compared with other acids is disadvantageous. Taking this into account, this work aims to perform a comparative study of the effect of different operational variables such as temperature, reaction time, leaching agent concentration (HCl) and reducing agent concentration (H<sub>2</sub>O<sub>2</sub>) on the dissolution efficiency of LCO for the systems HCl and HCl-H<sub>2</sub>O<sub>2</sub> to determine the optimal parameters to achieve a maximum dissolution in minimum time at low temperatures and reagent concentrations. Increasing temperature, time and concentration of the reagents had a positive effect on the dissolution of LCO. When working with HCl 1.8 M, the highest dissolution for LCO, 91.0% was obtained at 348 K for 60 min. Furthermore, a slightly higher oxide dissolution (93.0%) was obtained in a reducing medium at the same temperature in half the time and with a concentration of HCl more than ten times lower. This will allow us to propose an alternative process to the existing ones with economic and ecological advantages.https://www.mdpi.com/2075-4701/12/5/727LCOLiCoO<sub>2</sub>HClLIBsreducing agent |
| spellingShingle | D. Sebastián Drajlin Daniela S. Suarez Norman Toro Edelmira D. Gálvez Eliana G. Pinna Mario H. Rodriguez Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> Metals LCO LiCoO<sub>2</sub> HCl LIBs reducing agent |
| title | Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> |
| title_full | Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> |
| title_fullStr | Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> |
| title_full_unstemmed | Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> |
| title_short | Comparative Study of the Dissolution of LCO in HCl Medium with and without H<sub>2</sub>O<sub>2</sub> |
| title_sort | comparative study of the dissolution of lco in hcl medium with and without h sub 2 sub o sub 2 sub |
| topic | LCO LiCoO<sub>2</sub> HCl LIBs reducing agent |
| url | https://www.mdpi.com/2075-4701/12/5/727 |
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