Patent Licensing and Its Impact on Time-to-Market for Indian Businesses

Traditional battery separators (PE) melt at low temperatures (below 120°C) and cannot stop lithium dendrites from causing short circuits and fires. Current solid-state solutions face a dilemma: ceramic separators (e.g., LLZO) are safe but brittle and expensive, while polymer options (e.g., PEO) suffer from poor thermal stability and low mechanical strength at high temperatures. There is a critical need for a tough, safe, and cost-effective material. 

The solution integrates a recycled PET (rPET) matrix with rigid oyster shell powder. These natural particles disperse mechanical stress and increase interface contact pressure, leading to more uniform ion transport and delayed thermal runaway. Simulations show that this material raises the thermal runaway threshold to 180°C. With a mechanical strength score of 8.5/10 and a dendrite suppression rating of 8.0/10, it matches the performance of premium ceramic separators at a fraction of the cost.

It solves the flaws of brittleness and high costs found in prior art. Unlike ceramic separators that crack easily during assembly, the rPET matrix provides the necessary toughness to handle volume changes during battery cycles. Furthermore, it addresses environmental concerns by transforming industrial and ocean waste (oyster shells and plastic bottles) into high-performance battery components, creating a truly circular economy solution.