Can hyperbolic graphene prevent the rapid heat accumulation of Li-ion battery cells?

Here we present an efficient thermal management system with high power and energy density by hyperbolic graphene phase change material, preventing the rapid heat accumulation of Li-ion battery cells.

What is graphite thermal sheet?

Graphite thermal sheet is a kind of plate-like component made of high purity graphite material with excellent thermal conductivity. It relies on the excellent heat conduction characteristics of graphite itself, can efficiently realize the transfer and distribution of heat.

How effective is graphite in preserving battery temperature during high C-rate charging?

The results reveal that, among the examined materials, graphite is the most effective in maintaining the battery temperature within an acceptable range, particularly during high C-rate charging. Graphite integration significantly reduces the thermal stabilization time from over an hour to approximately 600 s.

Does graphite regulate battery temperature?

The battery temperature exceeds the permissible range significantly when charging for 3C and 5C batteries. On the other hand, if graphite fills the gap between the batteries, the battery temperature remains below 318 K, demonstrating graphite’s effectiveness in regulating the battery pack temperature when charging at a rate of 5C.

Does graphene reduce battery temperature?

The graphene outer surface can efficiently dissipate heat generated inside the PCC via thermal radiation. Battery charging–discharging experiments show that the proposed composite reduces the battery temperature with zero energy consumption when compared to other approaches.

How does graphite improve thermal performance?

Graphite has enhanced thermal performance by substantially reducing both the maximum temperature and temperature differences over the surface of the cell in comparison to aluminum foam.