| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrometallurgy 2020
|
| Presentation Title |
M-59: Reduction Mechanism of Metal Cobalt from Cathode Material of Waste Lithium Cobalt Oxide Battery |
| Author(s) |
Jing Wang, Jinglong Liang, Hui Li, Jie Xu |
| On-Site Speaker (Planned) |
Jinglong Liang |
| Abstract Scope |
The electrical properties of Co(III) in LiCoO2 on Pt working electrode in 1023K NaCl-CaCl2(1:1) molten salt were studied by cyclic voltammetry, square wave voltammetry, linear sweep and chronoamperometry. The reduction of Co(III) in LiCoO2 to cobalt is a two-step reduction process, Co(III)→Co(II)→Co. The first and second steps are quasi-reversible processes controlled by diffusion control and kinetics. LiCoO2 was subjected to potentiostatic electrolysis for 10 h at a voltage of 1.5 V, and cobalt was directly prepared in 1023 K molten NaCl-CaCl2. The results showed that pure cobalt was obtained. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |