A research group headed by Prof. ZHANG Cunman from School of Automotive Engineering of Tongji University has made remarkable progress in advanced stored energy. A research paper entitled “Nitrogen-doped activated carbon for a high energy hybrid supercapacitor” was published inEnergy & Environmental Science(2016 (9)[M1] :102-106) by Dr. LI Bing from School of Automotive Engineering of Tongji University jointly with Prof. ZHANG Cunman and Dr. MEI Cai from GM’s R&D center. The research was part of a joint postdoctoral program between Tongji University and GM’s R&D center funded by China International Exchange Program.

The research developed the high energy-density of Lithium-ion supercapacitor with independently developed materials of nitrogen-doped super activated carbon and carbon silicon composites as anode and cathode materials of the hybrid capacitor. This nitrogen-doped activated carbon plays a decisive role in high energy hybrid capacitor. The research group used discarded corn seeds as presoma, deriving nitrogen from ammonia, and developed the nitrogen-doped activated carbon with a surface of over 2800 m²/g. This new hybrid supercapacitor can achieve energy density up to 230 Wh/kg (calculated based on active materials) with power density at 1747 W/kg, and power density up to 30 kW/kg if energy density at 141Wh/kg (calculated based on active materials), with cycling performance over 8000 times. This research finding provides a new perspective for the development of next generation high function stored energy technology, reserving huge potentials for future commercial application.

Translated by May Language Studio based upon

http://news.tongji.edu.cn/classid-15-newsid-50290-t-show.html