Improving the Energy Density of Ni-Rich Layered Cathodes: Through Increasing Nickel Composition or By Raising the Charge Cut-Off Voltage?

摘要

Since the commercialization of lithium-ion batteries, portable energy storage devices have undergone extensive development. This has allowed for the significant extension of their application areas especially large-scale applications such as plug-in hybrid electric vehicles and electric vehicles (EVs). However, the limited driving range, high costs, and safety concerns of electrified transportation systems are impeding their wider acceptance by society. Therefore, further improvements in the energy density, thermal stability, and cycle life of LIBs are necessary to accelerate their penetration into the automobile market.