469639 Direct Fast Pyrolysis Bio-Oil Fuel Cell

Wednesday, November 16, 2016: 9:30 AM
Taylor (Hilton San Francisco Union Square)
Neeva Benipal1, Ji Qi1, Patrick Johnston2, Jacob C. Gentile1, Robert C. Brown3 and Wenzhen Li1, (1)Chemical and Biological Engineering, Iowa State University, Ames, IA, (2)Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA, (3)Bioeconomy Institute, Iowa State University, Ames, IA

Bio-oil derived from the pyrolysis of lignocellulosic biomass shows a great promise, however, needs further upgrading to potentially serve as an alternative to fossil fuels. Herein, we demonstrate that crude fast pyrolysis bio-oil can be directly used as a fuel for anion exchange membrane fuel cells (AEMFCs) to generate high power density electrical energy at low temperature. Direct fast pyrolysis bio-oil AEMFCs with the Pd/CNT anode catalyst and a commercial Fe-based cathode catalyst exhibit a remarkable peak power density of 42.7 mW cm-2. Levoglucosan was identified as the major sugar compound with 11.1 wt% of the bio-oil composition, along with disaccharides, pyrolytic lignin, and oligomer of lignin-derived phenolic compounds. Cyclic voltammetry (CV) studies investigated the electrocatalytic oxidation of high purity levoglucosan over the four noble metal catalysts in half cell, as levoglucosan is the dominant sugar component in bio-oil. Pd/CNT, compared to other catalysts, displayed the highest activity and lowest onset potential of electrocatalytic oxidation of levoglucosan. AEMFC with high purity sugars shows ~ 1.2 to 3 times higher power density than that with fast pyrolysis bio-oil fuel.

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See more of this Session: Unconventionals: Hydrogen and Fuel Cells II
See more of this Group/Topical: Fuels and Petrochemicals Division