Hydrogen reduction of spent lithium-ion battery cathode material for metal recovery: Mechanism and kinetics.

ABSTRACT: Hydrogen reduction is becoming a promising method for recycling lithium-ion battery cathode materials. However, the reaction mechanism and kinetics during hydrogen reduction are unclear, requiring further investigation. Therefore, non-isothermal and isothermal reduction experiments were conducted to evaluate the temperature dependence of the hydrogen reduction kinetics using simultaneous thermogravimetric and differential thermal analysis equipped with mass spectrometry. XRD and SEM were used to characterize the reduction products to understand the underlying reduction mechanisms. The hydrogen reduction profile could be divided into three main stages: decomposition of cathode materials, reduction of the resultant nickel and cobalt oxides, and reduction of LiMnO₂ and residual nic

SUBMITTER: Huang Z 

PROVIDER: S-EPMC9548595 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature