2026-10-12T16:56:03Z https://www.scidb.cn/oai

10.57760/sciencedb.37213 2026-02-09T10:42:31Z

2026-02-09 Towards green magnesium preparation using a recyclable argon plasma anode for continuous electrolysis in molten chlorides doi:10.57760/sciencedb.37213 en During the magnesium electrolysis process, graphite anodes are prone to consumption and fragmentation, disrupting normal operations and releasing greenhouse gases. In this study, we introduce a continuous, carbon-free approach to magnesium electrolysis using stable argon plasma as the anode. The argon plasma anode operates via two distinct electrochemical stages: argon ionization at an average potential of 347.3 ± 95.3 V and chlorine evolution at 124.5 ± 9.0 V. A protective boron nitride (BN) coating on the tungsten collector filament significantly reduces corrosion. Atomic emission spectroscopy confirms the presence of Ar+ ions, whose concentration increases with current. Thermodynamic calculations and reaction analysis demonstrate that Ar+ facilitates chloride oxidation via the reaction: 2Ar+ + 2Cl- → 2Ar + Cl2. This work establishes the feasibility of argon plasma as an inert anode for chloride-based molten salt electrolysis, offering a sustainable alternative for magnesium production and potential applications in other high-temperature corrosive environments. Argon plasma; Inert anode; Magnesium electrolysis; Carbon-free; Sustainable production; Chloride molten salts. Sen Feng RESTRICTED dataset http://www.doi.org/10.1038/s42004-026-01958-z Science Data Bank