Rechargeable lithium-ion batteries, professionally known as lithium-ion batteries or secondary batteries, are portable batteries that are charged through the input of external voltage. Their core characteristics lie in their high energy density, lightweight design, and long cycle life.
These batteries store energy by exchanging lithium ions between the positive and negative electrodes, with the positive electrode typically composed of oxide materials and the negative electrode predominantly of carbon materials. During charging, lithium ions migrate from the negative electrode to the positive electrode, and during discharging, they move in the opposite direction, generating an electric current. Furthermore, rechargeable lithium-ion batteries boast environmental advantages, emitting no polluting substances. Their excellent cycling characteristics enable them to maintain a high capacity after numerous charge-discharge cycles, making them the preferred battery type for electronic devices such as smartphones, tablets, laptops, and more.
In conclusion, rechargeable lithium-ion batteries occupy a pivotal position in modern technology products due to their outstanding performance and vast range of applications.