S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
All-graphene-battery: Bridging the gap between supercapacitors and lithium ion batteries
- Kim, Haegyeom; Park, Kyu-Young; Hong, Jihyun; Kang, Kisuk
- Issue Date
- Scientific Reports, Vol.4, p. 5278
- Herein, we propose an advanced energy-storage system: all-graphene-battery. It operates based on fast surface-reactions in both electrodes, thus delivering a remarkably high power density of 6,450 W kg(-1) total electrode while also retaining a high energy density of 225 Wh kg(-1) total electrode, which is comparable to that of conventional lithium ion battery. The performance and operating mechanism of all-graphene-battery resemble those of both supercapacitors and batteries, thereby blurring the conventional distinction between supercapacitors and batteries. This work demonstrates that the energy storage system made with carbonaceous materials in both the anode and cathode are promising alternative energy-storage devices.