What are the two pieces of different metals that are in contact with electrolytes in a batteryy?

In a battery, the two different pieces of metal are typically the anode and the cathode. The anode is often made of a material like zinc or lithium, while the cathode is commonly composed of materials such as copper or manganese dioxide. These metals react with the electrolyte, facilitating the flow of electrons and creating an electric current. The specific metals and electrolytes used depend on the type of battery.