Researchers develop mild oxalic acid process to recover indium from solar cell waste — Stepchange News

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Researchers develop mild oxalic acid process to recover indium from solar cell waste

A new hydrometallurgical technique uses mild oxalic acid to efficiently extract high-purity indium from discarded heterojunction solar cells while also recovering silver grids, addressing material scarcity in solar manufacturing.

First covered Jul 3, 2026 · 2:48 AM PT · 1 article

Coverage

5h PV Magazine Mild oxalic acid process enables efficient indium recovery from heterojunction solar cells — A mild oxalic-acid-based hydrometallurgical process enables efficient indium recovery from indium tin oxide in solar cell waste while simultaneously releasing…

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More coverage from around the web

link.springer.com Recycling and recovery of spent copper—indium—gallium—diselenide (CIGS) solar cells: A review | International Journal of Minerals, Metallurgy and Materials | Springer Nature Link

sciencedirect.com Optimization of indium recovery from waste crystalline silicon heterojunction solar cells by acid leaching - ScienceDirect

pubs.acs.org The Role of Oxalic Acid in the Leaching System for Recovering Indium from Waste Liquid Crystal Display Panels | ACS Sustainable Chemistry & Engineering

sciencedirect.com Leaching of indium from waste LCD screens by oxalic acid in temperature-controlled aciduric stirred reactor - ScienceDirect

ncbi.nlm.nih.gov Indium and Silver Recovery from Perovskite Thin Film Solar Cell Waste by Means of Nanofiltration

Appeared in: 2026-07-03 (#9)

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