Chapter 2: Li Battery

Recent rapid progress and growing efforts to use clean and renewable energies have strongly required to urgently develop energy storage devices with high energy and power densities [1]. Electrochemical energy storage devices such as batteries and capacitors match this requirement because they can efficiently store and deliver energy when it is needed. Particularly, Li battery is expected to possess high energy density compared with other batteries like lead-acid battery, and so it has been thought to be a promising battery to fulfill this requirement [2]…