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Cobalt

Cobalt is a ferromagnetic metal key to lithium-ion batteries.
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Description

Cobalt is a ferromagnetic metal and one of the key materials used in lithium-ion batteries for cell phones, notebook PCs, battery-electric cars and hybrids. It also is used in alloys and semiconductors.

Cobalt provides high energy density and thermal stability in a battery. Lithium-ion batteries consist of an anode, cathode and other components. Graphite is used for the anode. In one example of the cathode, Tesla uses a nickel-cobalt-aluminum-oxide (NCA) chemistry. In simple terms, lithium ions move from the anode to the cathode and back, causing the battery to charge or discharge.

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Tech Talk: 5/3nm Parasitics