Peroxodisulphuric acid synthesis in a flow electrolyser and its potential utilisation for black mass leaching.

ABSTRACT: This study demonstrates the electrochemical synthesis of peroxodisulfuric acid (H₂S₂O₈) in a coaxial flow-type electrolyser. It evaluates its potential as a leaching agent for the black mass from spent lithium-ion batteries. The optimised synthesis (conditions: flow rate, current density) achieved high concentrations of (H₂S₂O₈) (≈180 g dm^-3) at a specific energy consumption of nearly 1.5 Wh g^-1. The leaching performance of H₂S₂O₈ was compared with that of conventional systems, including aqua regia and 2 M H₂SO₄ + H₂O₂. While aqua regia completely dissolved the NMC phase, and the H₂SO₄/H₂O₂

SUBMITTER: Tazhibayeva A 

PROVIDER: S-EPMC12580998 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature