All-Solid-State Symmetric Supercapacitor Based on Co 3 O 4 Nanoparticles on Vertically Aligned Graphene
Sun Yat-sen University · State Key Laboratory of Optoelectronic Materials and Technology
Abstract
We have synthesized the hybrid supercapacitor electrode of Co3O4 nanoparticles on vertically aligned graphene nanosheets (VAGNs) supported by carbon fabric. The VAGN served as an excellent backbone together with the carbon fabric, enhancing composites to a high specific capacitance of 3480 F/g, approaching the theoretical value (3560 F/g). A highly flexible all-solid-state symmetric supercapacitor device was fabricated by two pieces of our Co3O4/VAGN/carbon fabric hybrid electrode. The device is suitable for different bending angles and delivers a high capacitance (580 F/g), good cycling ability (86.2% capacitance retention after 20 000 cycles), high energy density (80 Wh/kg), and high power density (20 kW/kg…
Citation impact
- FWCI
- 31.28
- Percentile
- 100%
- References
- 28
Authors
5- QLQingyu LiaoCorresponding
Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technology
- NLNa Li
State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University
- SJShuaixing Jin
State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University
- GYGuowei Yang
Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technology
- CWChengxin Wang
Sun Yat-sen University, State Key Laboratory of Optoelectronic Materials and Technology
Topics & keywords
- Supercapacitor
- Capacitance
- Materials science
- Graphene
- Electrode
- Carbon fibers
- Nanoparticle
- Power density
- Affordable and clean energy