A Microfabricated Nickel-Hydrogen Battery Using Thick Film Printing Techniques

Abstract

To utilize the distinctive cycle life and safety characteristics of the nickel-hydrogen chemistry while eliminating conventional high pressure limitations, a microfabricated nickel-hydrogen battery using low-pressure metal hydride for hydrogen storage was proposed. Thick film printing techniques which are simple and low cost were used to fabricate this proposed battery. Inks were developed for the different battery components, including electrodes, current collectors and separator, and SEM images on these printed components showed the desired characteristics for each. Positive electrode cycling tests were performed on the printed positive electrodes while cyclic voltammetry was used to characterize the printed negative electrodes. Consistent charge and discharge performance was observed during positive electrode cycling. Full cells with printed positive and negative assemblies were assembled and tested for cycling.