Zinc-bromine refers to a type of battery technology that uses zinc and bromine as the main components for energy storage. These batteries are known for their ability to store large amounts of energy and are often used in renewable energy applications, such as solar and wind power. They operate by converting chemical energy into electrical energy through a series of reactions involving zinc ions and bromine. The zinc-bromine battery is a type of flow battery, meaning that the energy is stored in liquid electrolytes that can be pumped through the system. This design allows for easy scaling and longer discharge times compared to traditional batteries. Additionally, zinc-bromine batteries are considered environmentally friendly, as they use abundant materials and have a lower environmental impact.