NMR Studies of Cathode Materials for Lithium-Ion Rechargeable Batteries

摘要

Lithium intercalation or insertion materials have been widely investigated in the search for new electrode materials for use in high-voltage rechargeable batteries.The first commercial Li-ion rechargeable battery contains the layered materials LiCoO_2 (Figure 1) and graphite as the cathode (or positive electrode) and anode (or negative electrode),respectively.Although this battery is the current standard in many applications including cell phones and laptops,its slow charge and discharge rates and cost have prevented its use in applications that require cheap high power and capacity,such as hybrid electric vehicles and electric vehicles.