👉 The nickel fluid, often referred to as nickel-cadmium (NiCd) electrolyte, is a crucial component in nickel-cadmium (NiCd) batteries. It consists of nickel oxide hydroxide as the positive electrode and cadmium as the negative electrode, immersed in an alkaline electrolyte solution typically composed of potassium hydroxide. This fluid facilitates the electrochemical reactions that enable the battery to store and release electrical energy. During discharge, nickel ions from the positive electrode migrate through the electrolyte to the negative electrode, where they combine with cadmium ions to form cadmium hydroxide, while electrons flow through an external circuit, powering devices. The nickel fluid's ability to maintain a stable and efficient ionic environment is vital for the battery's performance, although it can suffer from memory effects and has a relatively low energy density compared to other battery technologies.
