Journal of Chemistry and Chemical Research

The energy efficiency and membrane lifespan of ion-exchange membrane (IM) electrolyzers for caustic soda production are critical determinants of industrial productivity and economic viability. To address challenges such as high energy consumption and rapid membrane degradation during electrolysis, this study proposes integrated optimization strategies including current density distribution adjustment, temperature control within the cell, improved membrane material selection, and surface treatment technologies. These coordinated measures effectively reduce localized polarization and energy loss, enhance ion migration efficiency, maintain stable sodium hydroxide yield, and slow down membrane performance deterioration. Experimental validation and industrial applications demonstrate that this multi-factor synergy enables sustained low energy consumption, high production rates, and equipment reliability under high-current-density operating conditions, providing technical assurance for the efficient implementation of IM-based caustic soda processes.

Ion membrane process; Caustic soda electrolyzer; Energy efficiency improvement; Membrane life; Technical optimization