Membrane-free electrolyser developed

December 4th, 2014, Published in Articles: Energize


Hydrox Holdings has announced its new hydrogen production method. This radical newly designed electrolyser and operating system totally eliminates the use of a membrane in the production of hydrogen. This promises to greatly reduce the costs of producing hydrogen in utilisable form. The process of electrolysis employed in producing hydrogen is well-established and relatively simple – by applying an electrical current across two electrodes immersed in water, hydrogen and oxygen are produced. In traditional practise, a membrane is then used to separate the gases produced. The challenge in this methodology is that the membranes are expensive and are prone to breakdown and failure. They also create certain resistance and ohmic drop issues across the electrodes resulting in over-potential (an increase in electricity beyond what is theoretically required for electrolysis). Membranes are also known to be brittle, cannot handle high pressures and temperatures and can lead to gas crossover. Due to the total elimination of a membrane the electrolyser is capable of achieving extremely high current densities using only inexpensive nickel electrodes.

Contact Corrie de Jager, Hydrox Holdings, Tel 082 566-2501,

Related Articles

  • Off-grid embedded generation systems: Performance standards
  • South African engineering excellence celebrated
  • Clamp-on ultrasonic flow measurement
  • Unit 2 of Rooppur NPP achieves concrete milestone
  • Position of new Eskom Group chief executive attracts interest