Due to increasing safety issues with liquid based electrolytes, there has been a great interest in the field of solid state lithium batteries with a solvent free electrolyte. The invention involves a novel block copolymer electrolytes with tapered interfaces between copolymer blocks. Block copolymers are promising materials for conducting applications due to their ability to self assemble into ordered nanostructures. In this invention, a tapered interface between pure block is generated to decouple polymer interfacial interactions from molecular weight and chemical constituents. Thus, tapered block copolymers can be used to create high molecular weight polymer electrolytes, providing improved mechanical properties, while retaining the similar processability as low-molecular-weight materials. Additionally, the salt-doped tapered block copolymers exhibit comparable ionic conductivity relative to salt-doped diblock copolymers. This indicated that it is possible to modify the copolymer composition profile between two blocks, manipulating the polymer interfacial interactions, while maintaining the ability for ion transport.
be utilized as an electrolyte in energy generation and storage devices
free electrolyte provides a safe and efficient usage in energy storage devices