TNPSC Thervupettagam

New flow battery technology

May 19 , 2023 584 days 439 0
  • Indian Institute of Technology of Madras have developed a ‘non-aqueous all-organic redox flow battery’ (NORFB).
  • They have developed a new type of electrolyte using ‘pyrylium salts’, which are a class of organic chemicals.
  • With suitable structural modifications these chemicals allow high-voltage operation, namely they can store more energy.
  • The electrolyte is designed to carry more current density as well as voltage.
  • Conventional flow batteries feature aqueous (water-based) electrolytes like hydrochloric acid, sulphuric acid, and alkali metal hydroxides.
  • Water in the electrolyte undergoes electrolysis, reducing the operating voltage limit and energy density.
  • The presence of water leads to corrosion of battery components, diminishing their lifespan and performance.

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