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A water-based, rechargeable battery

First step to produce a cheap aquous electrolyte for powerful rechargeable batteries: Seven grams of sodium FSI (precise name: sodium bis(fluorosulfonyl)imide) and one gram of water produce a clear saline solution with an electrochemical stability of up to 2.6 volts – twice as much as other aqueous electrolytes.

Topics:
  • Paul Scherrer Institut
  • batteries
  • anodes
  • cathodes
  • water
  • sodium-bis(fluorosulfonyl)imide
  • electrochemical stability
  • electrolytes

Empa (Eidgenössische Materialprüfungs- und Forschungsanstalt)

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