Purpose of hot pressing of lithium batteries

Why are lithium-ion batteries so popular?

In recent years, the rapid advances in electric vehicles has led to an increased demand for lithium-ion batteries (LIBs) among consumers. This demand is accompanied by escalating performance expectations, particularly in areas such as storage capacity and production costs [1, 2, 3, 4, 5, 6, 7].

Why are mechanical properties important in lithium-ion batteries?

Mechanical properties are important for the cycle performance of the battery, since the loss of contact between the body of the electrode material and the fluid collector is one of the most common causes of capacity loss in lithium-ion batteries.

Why do lithium ion batteries need dry electrodes?

The performance of lithium-ion batteries depends greatly on the composition and microstructure of the electrodes. Unlike SC electrodes, dry electrodes can improve area capacity and other electrochemical properties by changing the microstructure and morphology.

Can lithium foil be used as a battery anode?

In the half-cell experiment utilizing lithium foil as the anode, it was observed that the electrode subjected to a hot-pressing duration of 60 min exhibited the most optimal battery performance. Specifically, it demonstrated a capacity retention rate of 69.4% after 100 cycles at a current density of 1C. Figure 1.

What are lithium ion batteries used for?

Lithium-ion batteries (LIBs) have been widely used in portable electronics, electric vehicles, and grid storage due to their high energy density, high power density, and long cycle life.

What happens if a Lib battery is too hot?

The high operating temperature (up to 80°C) of LIB especially the power battery for automotive can result in an increase of connection resistance and temperature variation, which will cause thermal expansion or even thermal fatigue and damage the tab joint (Brand et al., 2013; Zhao et al., 2014).