Our research into enhancing Lead Acid Batteries with graphene commenced in 2016. The initial motive of the project was to enhance the dynamic charge acceptance of the negative active material.
This research enhances the capacity of the lead acid battery cathode (positive active materials) by using graphene nano-sheets with varying degrees of oxygen groups and conductivity, while establishing the local mechanisms involved at the active material interface.
In this article, we report the addition of graphene (Gr) to negative active materials (NAM) of lead-acid batteries (LABs) for sulfation suppression and cycle-life extension. Our experimental results show that with an addition of only a fraction of a percent of Gr, the partial state of charge (PSoC) cycle life is si
The work done by Witantyo et al. on applying graphene materials as additives in lead-acid battery electrodes obtained that the additive increases the conductance and enhanced battery performance . Dong and the group checked the performance of multi-walled carbon nanotubes (a-MWCNTs) as an additive for the lead acid battery. ... ...
The plethora of OH bonds on the graphene oxide sheets at hydroxyl, carboxyl sites and bond-opening on epoxide facilitate conduction of lead ligands, sulphites, and other ions through chemical substitution and replacements of the −OH. Eqs. (5) and (6) showed the reaction of lead-acid battery with and without the graphene additives.
After years of extensive research, we came to understand that graphene not only improves charge acceptance but also improves and enhances other key aspects of the battery. In collaboration with the largest battery manufacturer in Sri Lanka, we introduced the world’s first Graphene Enhanced Led Acid Battery in 2022.