Incineration of EV Lithium-ion batteries as a pretreatment for recycling – Determination of the potential formation of hazardous by-products and effects on metal compounds
Artikel i vetenskaplig tidskrift, 2020

In several industrial Lithium-ion batteries recycling processes, a thermal treatment with oxidative atmosphere is used to separate the battery components and to remove the organic components. This method is often combined with hydrometallurgical processes with the aim to increase the metal recovery rate or to improve the efficiency of the existing processes. Despite such efforts, the effects of a thermal treatment in an oxidative atmosphere on the microstructure and composition on cathode and anode materials has not been explored. In this manuscript, spent batteries which cathode active material has the composition Li(NixMnyCoz)Oz, i.e. NMC-LiBs, were subjected to thermal treatment at 400˚, 500˚, 600˚, and 700 °C for 30, 60, and 90 min. The microstructure and the composition were studied using XRD and ICP-OES. Thermodynamic calculations were performed to forecast the trend of the carbothermic reduction of active materials. It was observed the formation of gas and organic oil by-products from the decomposition of the polypropylene separator and the polyvinylidene fluoride binder. The identification of the composition of these by-products has great importance since they have a corrosive and toxic behavior. It was observed the fluorine behavior during the thermal treatment and its presence in the oil by-products.

Incineration

NMC batteries

Lithium-ion batteries

Carbothermal reduction

Metal recycling

Författare

Gabriele Lombardo

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Burcak Ebin

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Mark Foreman

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Britt-Marie Steenari

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Martina Petranikova

Chalmers, Kemi och kemiteknik, Energi och material, Kärnkemi

Journal of Hazardous Materials

0304-3894 (ISSN)

Vol. 393 122372

Ämneskategorier

Materialkemi

DOI

10.1016/j.jhazmat.2020.122372

PubMed

32208329

Mer information

Senast uppdaterat

2020-06-05