Towards the development of a novel bipolar-based battery in aqueous electrolyte: Evaluation of the electrochemical properties of NiCu based hydroxide electrodes fabricated on Ni–mesh and graphite composite current collectors

The use of bipolar electrodes in rechargeable batteries can improve specific power, simplify cell design, and reduce manufacturing costs. However, bipolar-based still suffer from many drawbacks. Therefore, developing high-performance active materials improvement strategies encompassing the entire cell's design is essential. current collector significantly impacts viability mass production; however, it most neglected feature electrochemical energy storage devices. serves a dual purpose; allows movement electrons among electrode material provides mechanical support. It also act as transportation to terminals battery. This study constructed novel battery utilizing graphite collector, its discharge capacities for Ni-Fe applications were evaluated. Monopolar NiFe cells, one using substrate other Ni-mesh used comparison. monopolar-based coated onto demonstrated 29% (199 mAh/g) higher capacity than Ni-mesh-based (142 after 100th cycle. In contrast, resulted 158 mAh/g cycle, corresponding coulombic efficiency 72%.