Operando charcterization of bi-functional catalysts for Zn-H2 ¬energy storage application and impact of ZnO on catalytic function

A novel Zn-H2 energy storage system presents high overall efficiencies up to 50% and low costs due to the platinum group metal (PGM) free bi-functional catalyst utilized. However, in order to meet requirements for commercial application, already existing or new bi-functional catalysts must be further developed to achieve satisfactory activities over a prolonged period of cycling. Several potential catalytic materials prepared using a straightforward synthesis route have been investigated, revealing a detrimental impact of saturated ZnO on catalytic activity. The aim of the proposed experiment is to develop an increased understanding into structural alteration of the bi-functional catalysts throughout operation using operando X-ray diffraction and to gain an understanding of the impact of ZnO in the electrolyte on the catalytic reaction. Such insight may prove crucial in the development of fundamental understanding of the Zn-H2 reaction system.