![]() ![]() The most common combination is that of lithium cobalt oxide (cathode) and graphite (anode), which is most commonly found in portable electronic devices such as cellphones and laptops. Li-ion batteries can use a number of different materials as electrodes. ![]() In part because of lithium’s small size (third only to hydrogen and helium), Li-ion batteries are capable of having a very high voltage and charge storage per unit mass and unit volume. The lithium ions are small enough to be able to move through a micro-permeable separator between the anode and cathode. ![]() The lithium ions move from the anode and pass through the electrolyte until they reach the cathode, where they recombine with their electrons and electrically neutralize. During a discharge cycle, lithium atoms in the anode are ionized and separated from their electrons. A lithium-ion (Li-ion) battery is an advanced battery technology that uses lithium ions as a key component of its electrochemistry. ![]()
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