1 results about "Gallium chloride" patented technology

This invention relates to a method and application for molten salt electrolysis to recover GaN waste, belonging to the field of electrochemical metallurgy. It solves the problems of existing GaN recovery technologies that rely on pyrometallurgical or hydrometallurgical processes, resulting in huge energy consumption, severe secondary pollution, and difficulty in directly utilizing electrochemical energy to achieve efficient GaN decomposition and highly selective gallium recovery. The method includes: preparing GaN-containing waste into a specific type of anode electrode, placing it in a chloride molten salt electrolyte containing 10-50 wt% gallium chloride for electrolysis, allowing GaN to be directly electrochemically oxidized and decomposed into gallium ions and nitrogen gas at the anode. The gallium ions migrate to the cathode and are reduced to high-purity metallic gallium. This invention achieves direct electrochemical attack on stable GaN covalent bonds under low-temperature conditions, integrating the decomposition and purification processes into a single electrolysis step. It has the advantages of short process, low energy consumption, environmental friendliness, and applicability to various forms of GaN waste.