Are integrated battery systems a promising future for lithium-ion batteries?

It is concluded that the room for further enhancement of the energy density of lithium-ion batteries is very limited merely on the basis of the current cathode and anode materials. Therefore, an integrated battery system may be a promising future for the power battery system to handle the mileage anxiety and fast charging problem.

What is a lithium ion battery?

Unlike Li-S batteries and Li-O 2 batteries, currently commercialized lithium-ion batteries have been applied in the production of practical electric vehicles, simultaneously meeting comprehensive electrochemical performances in energy density, lifetime, safety, power density, rate properties, and cost requirements.

Are lithium-ion batteries a good energy storage system?

Lithium-ion batteries (LIBs) have long been considered as an efficient energy storage system on the basis of their energy density, power density, reliability, and stability, which have occupied an irreplaceable position in the study of many fields over the past decades.

What is the energy density of a lithium ion battery?

Taking the actual driving range of 300 km as example, the energy density of the power battery should be up to 250 Wh Kg −1, while the energy density of single LIBs should be 300 Wh Kg −1. The theoretical energy density of lithium-ion batteries can be estimated by the specific capacity of the cathode and anode materials and the working voltage.

How to improve energy density of lithium ion batteries?

The theoretical energy density of lithium-ion batteries can be estimated by the specific capacity of the cathode and anode materials and the working voltage. Therefore, to improve energy density of LIBs can increase the operating voltage and the specific capacity. Another two limitations are relatively slow charging speed and safety issue.

Are lithium-ion batteries a good choice for commercial engineering?

There are numerous studies in the field of Lithium-ion batteries, but there are still several issues that need to be addressed in the process of commercial engineering, such as thermal safety, compactness, lightweight design, economy and durability of the battery system , .