Journal
IEEE TRANSACTIONS ON NANOTECHNOLOGY
Volume 10, Issue 1, Pages 59-62Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNANO.2010.2050147
Keywords
Biofuel cell; enzymatic fuel cell; graphene nanosheets; polypyrrole; surface engineering
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Funding
- Department of Defense/Air Force Office of Scientific Research [FA9550-07-1-0344]
- National Science Foundation (NSF) [MRI 0821582, CHE-0716718]
- Wallace Coulter Foundation
- Institute for Functional Nanomaterials NSF [0701525]
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A novel approach to the surface functionalization for membraneless enzymatic glucose/oxygen biofuel cell applications is described. The biofuel cell employs the gold plate electrodes modified by specific graphene-enzyme conjugations, which are immobilized by electrochemical deposition of the conducting polypyrrole polymer. The electrochemical activity of these electrodes is superior to the electrodes immobilized with sol-gel. Such enhancements can be attributed to the excellent electrical property and enzyme loading capability of the polypyrrole material. The power output and the biostability of the integrated biofuel cell are also improved.
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