Salgenx has developed a graphene production method that uses its saltwater redox flow battery. The membrane-less battery charges and discharges by using an electrolyser that splits sodium chloride (NaCl) into sodium (Na) and chlorine.
“The chlorine is then stored in the aqueous electrolyte, while the sodium is stored in the cathode,” Salgenx CEO Greg Giese told pv magazine. “In this instance, the cathode comprises a sacrificial material, graphite, which intercalates the sodium. Salgenx applies a proprietary technique that exfoliates the graphite into individual layers of graphene, which can be further processed for higher purity.”
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