AQUEOUS REDOX FLOW CELLS FOR LARGE-SCALE ENERGY STORAGE AND CONVERSION

Aqueous redox flow cells (ARFCs) have exhibited unique advantages in the energy storage field. The ARFCs have excellent customizability and scalability due to their decoupled energy storage and power generation. However, the energy density of ARFCs is limited by the electrochemical stability window of water and the solubility of the active species. In order to enhance the energy storage capability of ARFCs, new battery chemistry such as polyoxometalate – cerium system is demonstrated in the thesis to expand the overall cell voltage. Besides, the incorporation of redox targeting reaction serves to improve the energy density of ARFCs by the addition of solid energy storage material into liquid phase electrolytes. In addition, the potential of ARFCs setup is further explored in the energy conversion field. By utilizing a redox-mediated process, a nitrogen reduction reaction can be achieved, generating hydrazine or ammonium selectively. Thus, this thesis demonstrates the versatility of ARFCs in various energy storage and conversion applications.

Author dc:creator

• WANG XUN

• Flow battery, Energy storage, Energy conversion, Redox targeting reaction, redox mediated reaction, Solid energy storage material