electrode
a metal rod or plate that can conduct electricity into or out of a battery
The metal rod or plate which can conduct electricity into or out of a battery is commonly known as an electrode. An electrode is a conductor through which an electrical current passes. In the case of a battery, an electrode is used to connect the battery to a circuit, allowing the electrical energy to flow either into or out of the battery.
In a typical battery, there are two electrodes; one is the anode, and the other is the cathode. The anode is typically made of a metal or metal alloy that can easily lose electrons, while the cathode is usually made of a metal or metal oxide that can easily gain electrons. When the battery is charged, the anode becomes negatively charged, while the cathode becomes positively charged. When the battery is discharged, the anode becomes positively charged, while the cathode becomes negatively charged.
The choice of electrode material is crucial in designing a battery. The proper selection of electrode materials determines the battery’s performance, including its capacity, energy density, and power density. Therefore, careful consideration is required in selecting the right electrode material.
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