Are lithium-ion batteries a good choice?

In the recent years, lithium-ion batteries have become the battery technology of choice for portable devices, electric vehicles and grid storage. While increasing numbers of car manufacturers are introducing electrified models into their offering, range anxiety and the length of time required to recharge the batteries are still a common concern.

How does low temperature affect the performance and safety of lithium ion batteries?

Especially at low temperature, the increased viscosity of the electrolyte, reduced solubility of lithium salts, crystallization or solidification of the electrolyte, increased resistance to charge transfer due to interfacial by-products, and short-circuiting due to the growth of anode lithium dendrites all affect the performance and safety of LIBs.

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

On account of major bottlenecks of the power lithium-ion battery, authors come up with the concept of integrated battery systems, which will be a promising future for high-energy lithium-ion batteries to improve energy density and alleviate anxiety of electric vehicles.

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.

What are the problems affecting the performance of a lithium ion battery?

These problems greatly affect the performance of the battery, resulting in longer charging times, shorter cycle life, lower battery capacity, faster decay rate, and worse rate capability [4, 6, 7, 8]. The material of the electrode, electrolyte, and separator, and the structure of the battery all affect the working performance of LIBs at LT [9, 10].

Are lithium-ion batteries a bottleneck?

In recent years, researchers have worked hard to improve the energy density, safety, environmental impact, and service life of lithium-ion batteries. The energy density of the traditional lithium-ion battery technology is now close to the bottleneck, and there is limited room for further optimization.