Mesoporous nitrogen-rich carbons derived from protein for ultra-high capacity battery anodes and supercapacitors

Download
  1. Get@NRC: Mesoporous nitrogen-rich carbons derived from protein for ultra-high capacity battery anodes and supercapacitors (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1039/c2ee23599d
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleEnergy and Environmental Science
ISSN1754-5692
Volume6
Issue3
Pages871878; # of pages: 8
SubjectCarbon-based electrodes; Electrochemical energy storage; Energy applications; Graphitized carbons; High specific surface area; Lithium storage capacity; Nitrogen content; Specific capacitance; Capacitors; Graphitization; Mesoporous materials; Proteins; Biosynthesis; Electrochemistry; Foam
AbstractIn this work we demonstrate that biomass-derived proteins serve as an ideal precursor for synthesizing carbon materials for energy applications. The unique composition and structure of the carbons resulted in very promising electrochemical energy storage performance. We obtained a reversible lithium storage capacity of 1780 mA h g-1, which is among the highest ever reported for any carbon-based electrode. Tested as a supercapacitor, the carbons exhibited a capacitance of 390 F g-1, with an excellent cycle life (7% loss after 10000 cycles). Such exquisite properties may be attributed to a unique combination of a high specific surface area, partial graphitization and very high bulk nitrogen content. It is a major challenge to derive carbons possessing all three attributes. By templating the structure of mesoporous cellular foam with egg white-derived proteins, we were able to obtain hierarchically mesoporous (pores centered at ∼4 nm and at 20-30 nm) partially graphitized carbons with a surface area of 805.7 m2 g -1 and a bulk N-content of 10.1 wt%. When the best performing sample was heated in Ar to eliminate most of the nitrogen, the Li storage capacity and the specific capacitance dropped to 716 mA h g-1 and 80 F g -1, respectively. © 2013 The Royal Society of Chemistry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Security and Disruptive Technologies
Peer reviewedYes
NPARC number21271796
Export citationExport as RIS
Report a correctionReport a correction
Record identifieref197068-2664-4c0a-9b9e-8d07edde7464
Record created2014-04-22
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)