Nitrogen-doped mesoporous carbon of extraordinary capacitance for electrochemical energy storage
Chinese Academy of Sciences · Peking University · +4 more institutions
Abstract
Carbon-based supercapacitors can provide high electrical power, but they do not have sufficient energy density to directly compete with batteries. We found that a nitrogen-doped ordered mesoporous few-layer carbon has a capacitance of 855 farads per gram in aqueous electrolytes and can be bipolarly charged or discharged at a fast, carbon-like speed. The improvement mostly stems from robust redox reactions at nitrogen-associated defects that transform inert graphene-like layered carbon into an electrochemically active substance without affecting its electric conductivity. These bipolar aqueous-electrolyte electrochemical cells offer power densities and lifetimes similar to those of carbon-based supercapacitors…
Citation impact
- FWCI
- 74.26
- Percentile
- 100%
- References
- 31
Authors
7- TLTianquan Lin
Chinese Academy of Sciences, Peking University, Beijing National Laboratory for Molecular Sciences, Shanghai Institute of Ceramics, State Key Laboratory of Rare Earth Materials Chemistry and Application
- ICI‐Wei Chen
University of Pennsylvania
- FLFengxin Liu
Chinese Academy of Sciences, Shanghai Institute of Ceramics
- CYChongyin Yang
Chinese Academy of Sciences, Shanghai Institute of Ceramics
- HBHui Bi
Chinese Academy of Sciences, Shanghai Institute of Ceramics
Topics & keywords
- Supercapacitor
- Capacitance
- Electrolyte
- Materials science
- Carbon fibers
- Graphene
- Energy storage
- Electrochemistry
- Affordable and clean energy