Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Obtaining and Characterization of High-Quality Recycled Graphites From Different Types of Spent Batteries

Version 1 : Received: 24 March 2022 / Approved: 25 March 2022 / Online: 25 March 2022 (15:17:53 CET)

A peer-reviewed article of this Preprint also exists.

Alcaraz, L.; Díaz-Guerra, C.; Calbet, J.; López, M.L.; López, F.A. Obtaining and Characterization of Highly Crystalline Recycled Graphites from Different Types of Spent Batteries. Materials 2022, 15, 3246. Alcaraz, L.; Díaz-Guerra, C.; Calbet, J.; López, M.L.; López, F.A. Obtaining and Characterization of Highly Crystalline Recycled Graphites from Different Types of Spent Batteries. Materials 2022, 15, 3246.

Abstract

Spent batteries recycling is an important way to obtain low-cost graphite. Nevertheless, the obtaining of crystalline graphite with a rather low density of defects is required for many applications. In the present work, high-quality graphites have been obtained from different kinds of spent batteries. Black masses from spent alkaline batteries (batteries black masses, BBM), and lithium-ion batteries from smartphones (smartphone black masses, SBM) and electric and/or hybrid vehicles (lithium-ion black masses, LBM) were used as starting materials. A hydrometallurgical process was then used to obtain recycled graphites by acidic leaching. Different leaching conditions were used depending on the type of the initial black mass. The final solids were characterized by a wide set of complementary techniques.

Keywords

Recycled graphite; high-quality graphite; spent batteries; acidic leaching

Subject

Chemistry and Materials Science, Metals, Alloys and Metallurgy

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