Journal
ADVANCED SCIENCE
Volume 6, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/advs.201801665
Keywords
activated carbon; alkaline-acidic electrolytes; aqueous; high voltages; symmetric supercapacitors
Categories
Funding
- National Key R & D Program of China [2016YFB0700600]
- National Natural Science Foundation Committee of China [51425301, U1601214, 51573013, 51773092, 51772147]
- 1000 Youth Talents Plan of National Natural Science Foundation of China [51773092]
- Research Foundation of State Key Lab [ZK201717]
- Jiangsu Distinguished Professorship Program
Ask authors/readers for more resources
Aqueous symmetric carbon-based supercapacitors (CSCs) are always the research focus for energy storage devices because of the virtue of low cost, inherent safety, and encouraging electrochemical stability. As is well-known, so far most aqueous symmetric CSCs are subjected to low energy densities. Here, a symmetric supercapacitor comprising electrodes from biomass-derived activated carbon and alkaline-acidic electrolyte is reported. This aqueous symmetric CSC demonstrates exceptional electrochemical performance with high stable working voltage of 2 V and attractive cycling stability of no capacitance loss over 10 000 cycles. Impressively, it shows a remarkable energy density of 36.9 W h kg(-1) at 248 W kg(-1) based on the total mass of the active materials, which is much higher than traditional aqueous symmetric CSCs, and a power density of 4083 W kg(-1) with an energy density of 8.8 W h kg(-1). The use of stable alkaline-acidic electrolyte provides an innovative technique to enhance the energy density of aqueous supercapacitors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available