Diaphragm Puncture Test

The diaphragm is a critical component of lithium-ion batteries and other liquid electrolyte batteries. Polymers used in these films must be sufficiently robust to withstand winding operations during assembly and uneven lithium plating on the anode resulting from extensive use. Safer and more durable diaphragm materials can more effectively prevent contact between the anode and cathode, while thinner materials help reduce the weight of each battery and improve energy density.