Revisiting Olivine Phosphate and Blend Cathodes in Lithium Ion Batteries for Electric Vehicles

As electric vehicle market growing fast, lithium ion batteries demand is increasing rapidly. Sufficient battery materials supplies including cathode, anode, electrolyte, additives, et al. are required accordingly. Although layered cathode is welcome in high energy density batteries, it is challenging to balance the high energy density and safety beside cost. As consequence, olivine phosphate cathode is coming to the stage center again along with battery technology development. It is important and necessary to revisit the olivine phosphate cathode to understand and support the development of electric vehicles utilized lithium ion batteries. In addition, blend cathode is a good strategy to tailor and balance cathode property and performance. In this chapter, blend cathode using olivine phosphate cathode will be discussed as well as olivine phosphate cathode.

First Principles Calculations on Lithium Diffusion near Surface and in Bulk of Fe-doped LiCoPO4

The olivine phosphate LiCoPO4 is a prospective cathode material in high voltage lithium ion batteries. During lithium diffusion, the ions must overcome diffusion energy barrier near the surface and in...

Unexpected Role of Electronic Coupling between Host Redox Centers in Transport Kinetics of Lithium Ions in Olivine Phosphate Materials

The discrepancy between the trend in the diffusion coefficient of lithium ion (DLi+) and that in the activation energy of ion hopping signals hidden factors determining ion transport kinetics in...

Tuning polaronic redox behavior in olivine phosphate

In order to understand and improve the conductivity of LiFePO4, lots of attempts have been made both experimentally and theoretically.

Feeling the strain: enhancing ionic transport in olivine phosphate cathodes for Li- and Na-ion batteries through strain effects

Olivine-type phosphates LiFePO4 and NaFePO4 are among the most widely studied cathode materials for rechargeable batteries. Here we show that tensile strain applied perpendicularly to the alkali-ion migration channels will improve their intercalation properties.