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High-Performance Chemically Regenerative Redox Fuel Cells Using a NO3−/NO Regeneration Reaction.
- Source :
- Angewandte Chemie International Edition; 3/6/2017, Vol. 56 Issue 11, p2893-2897, 5p
- Publication Year :
- 2017
-
Abstract
- In this study, we proposed high-performance chemically regenerative redox fuel cells (CRRFCs) using NO<subscript>3</subscript><superscript>−</superscript>/NO with a nitrogen-doped carbon-felt electrode and a chemical regeneration reaction of NO to NO<subscript>3</subscript><superscript>−</superscript> via O<subscript>2</subscript>. The electrochemical cell using the nitrate reduction to NO at the cathode on the carbon felt and oxidation of H<subscript>2</subscript> as a fuel at the anode showed a maximal power density of 730 mW cm<superscript>−2</superscript> at 80 °C and twofold higher power density of 512 mW cm<superscript>−2</superscript> at 0.8 V, than the target power density of 250 mW cm<superscript>−2</superscript> at 0.8 V in the H<subscript>2</subscript>/O<subscript>2</subscript> proton exchange membrane fuel cells (PEMFCs). During the operation of the CRRFCs with the chemical regeneration reactor for 30 days, the CRRFCs maintained 60 % of the initial performance with a regeneration efficiency of about 92.9 % and immediately returned to the initial value when supplied with fresh HNO<subscript>3</subscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- CARBON fibers
FUEL cells
NITRATES
POLYELECTROLYTES
OXIDATION-reduction reaction
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 56
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 121574386
- Full Text :
- https://doi.org/10.1002/anie.201610738