Demonstration of Environmentally Friendly Aqueous Organic Redox Flow Battery

Purpose and goal: ** Denna text är maskinöversatt **

The project aimed to scale up the testing of Rivus´ environmentally friendly organic electrolytes for flow batteries. Large-scale organic synthesis was used to produce 100 kg of Rivus´ negative electrolyte, which had previously only been produced on a single gram scale. 100 kg of the positive electrolyte was purchased. Hardware for a vanadium flow battery was successfully adapted to work for Rivus organic electrolytes, and cycling has been initiated of the battery where expected capacity has been achieved.

Expected results and effects: ** Denna text är maskinöversatt **

The result of the project was a profoundly increased understanding in the function of the scale-up possibilities around Rivu´s electrolytes. Problems arose during the first scaling-up attempt, which led to a modification of Rivus´ electrolytes, which in turn led to increased energy density of the system. A production method for the large-scale synthesis of Rivus negative electrolyte has resulted.

Furthermore, Rivu´s team has developed competence in the operation of flow batteries and gained an understanding of the use of their electrolytes. Approach and implementation: ** Denna text är maskinöversatt **

The project was delayed due to a number of circumstances. Covid-19 led to major delays in both electrolyte materials and flow battery hardware. More quality assurance of the material produced in the large-scale synthesis was performed than initially expected to ensure that the material used can be used in the flow battery without being forfeited. Finally, a lot of alternative equipment and electronics needed to be purchased/developed to enable the operation of the battery.