Company Filing History:
Years Active: 2010
Title: Yoon-ju Chang: Innovator in Polymer Electrolyte Membranes
Introduction: Yoon-ju Chang is an esteemed inventor based in Pohang-si, South Korea, recognized for his significant contributions in the field of polymer technology. With a focus on multiblock copolymers, Chang has developed innovative methods and materials that enhance the performance of fuel cells, making strides towards more efficient energy solutions.
Latest Patents: Chang holds a patent for a "Multiblock copolymer, method of preparing the same, polymer electrolyte membrane prepared from the multiblock copolymer, method of preparing the polymer electrolyte membrane, and fuel cell employing the polymer electrolyte membrane." This invention comprises a unique multiblock copolymer that includes a polysulfone repeating unit, a sulfonated polysulfone repeating unit, and an ethylenic unsaturated group at its terminal. The resulting polymer electrolyte membrane boasts high ionic conductivity, excellent mechanical properties, and a minimized crossover of methanol, all while being cost-effective to manufacture. The innovative structure of the copolymer allows for adjustments that enhance its selectivity to solvents used in membrane applications.
Career Highlights: Yoon-ju Chang is currently employed at Samsung SDI Co., Inc., where he continues to push the boundaries of polymer chemistry and fuel cell technology. His dedication to research and development has placed him at the forefront of innovations in the energy sector.
Collaborations: Throughout his career, Chang has worked alongside talented colleagues, including Hae-kyoung Kim and Won-mok Lee. Their collaborations underscore the importance of teamwork in driving forward the advancement of technologies that are pivotal for sustainable energy solutions.
Conclusion: Yoon-ju Chang's contributions to the field of polymer electrolyte membranes signify a significant step towards enhancing the efficiency and cost-effectiveness of fuel cells. As he continues his work at Samsung SDI Co., Inc., his innovations reflect an ongoing commitment to developing sustainable energy sources, addressing global energy challenges through innovative materials and methods.