The latest technological breakthrough in lithium battery separators

What are lithium-ion battery separators?

Lithium-ion battery separators are receiving increased consideration from the scientific community. Single-layer and multilayer separators are well-established technologies, and the materials used span from polyolefins to blends and composites of fluorinated polymers.

What makes a good lithium based battery separator?

Ideal separators for lithium-based batteries should possess low internal resistance, high ion conductivity, high porosity, robust mechanical strength and favorable thermal stability. , , , , , , , , , , , , ,

Why do lithium batteries need a thick separator?

However, such thick separators come at the expense of less free space for accommodating active materials inside the battery, thus impeding further development of next-generation lithium-based batteries with high energy density.

Do lithium based batteries need a pore separator?

The porosity is definitely the basic requirement for separators of lithium-based batteries to transport Li ions. A sufficient amount of liquid electrolyte should be trapped within micro pores and interconnected channels in separator to sustain a high ion conductivity.

Are thin separators possible in Li-S batteries?

Some hotspots in material field like MOF and COF also provide new ideas for the development of thin separators in Li-S batteries owing to the outstanding polysulfides inhibition brought by their designable structure and desirable properties.

Why is a Lithium Ion Separator important?

As a key component of LIBs, the separator plays a crucial role in sequestering the electrodes, preventing direct contact between the positive and negative electrodes, and allowing the free passage of lithium ions in the electrolyte. Additionally, the separator is also crucial for ensuring the safe operation of the batteries.