Jun Xu

Title: Innovations of Jun Xu in Polymer and Battery Technology

Introduction

Jun Xu is an accomplished inventor based in Minneapolis, MN. He has made significant contributions to the fields of polymer science and battery technology. With a total of 2 patents, his work focuses on enhancing material properties and energy storage capabilities.

Latest Patents

One of Jun Xu's latest patents is for a block copolymer-toughened isotactic polypropylene. This innovative blend consists of a continuous phase of isotactic polypropylene and a dispersed phase of a poly-(ethylene-alt-propylene)-b-poly(ethylene-ran-ethyl ethylene) diblock copolymer. The amount of diblock copolymer is less than a specified weight percentage based on the total weight of the blend.

Another notable patent involves lithium batteries utilizing new manganese oxide materials as lithium intercalation hosts. This invention features amorphous manganese dioxide cathodes for lithium batteries, which are synthesized through a sol-gel approach. The process involves the reduction of sodium permanganate with fumaric acid disodium salt at room temperature, ensuring an amorphous structure. The resulting manganese dioxide exhibits a nanoporous structure with a high internal surface area of 350 m²/g. This material can electrochemically intercalate more than 1.6 moles of lithium per mole of manganese, with a theoretical capacity of 2 moles of lithium per mole of manganese. The host structure remains amorphous throughout the intercalation range, and the intercalation process is reversible. Additionally, lithium battery cathodes comprising this amorphous manganese dioxide, carbon powder, and a binder provide a charge capacity of 436 mAh/g and store energy at 1056 mWh/g. Copper-doped amorphous manganese oxides have shown significant improvements in cycling performance.

Career Highlights

Jun Xu is affiliated with the University of Minnesota, where he continues to advance research in his areas of expertise. His innovative work has garnered attention in both academic and industrial circles.

Collaborations

Some of his notable coworkers include Boone B Owens and William H Smyrl, who have collaborated with him on various projects.

Conclusion

Jun Xu's contributions to polymer and battery technology demonstrate his commitment to innovation and excellence in research. His patents reflect a deep understanding of material science and its applications in energy storage solutions.