OPTIMISED ENERGY STORAGE DEVICES

摘要

A lead-acid battery comprising: - at least one negative electrode compris ing lead-based battery electrode material and at least one region of capacit or material overlying the lead-based battery electrode material, each electr ode being in electrical connection to an outer terminal of the battery, and - at least one positive lead-dioxide based battery electrode, each positive electrode being in electrical connection to a second outer terminal of the b attery, - separator interleaving the facing electrodes - electrolyte filling at least the space of the electrodes and separators wherein the capacitor m aterial overlying the lead-based battery electrode material comprises 20-65% by weight of a high electrical conductivity carbonaceous material, 30-70% o f a high specific surface area carbonaceous material, at least 0.1% lead and binder.