In:
Angewandte Chemie International Edition, Wiley, Vol. 56, No. 11 ( 2017-03-06), p. 2893-2897
Kurzfassung:
In this study, we proposed high‐performance chemically regenerative redox fuel cells (CRRFCs) using NO 3 − /NO with a nitrogen‐doped carbon‐felt electrode and a chemical regeneration reaction of NO to NO 3 − via O 2 . The electrochemical cell using the nitrate reduction to NO at the cathode on the carbon felt and oxidation of H 2 as a fuel at the anode showed a maximal power density of 730 mW cm −2 at 80 °C and twofold higher power density of 512 mW cm −2 at 0.8 V, than the target power density of 250 mW cm −2 at 0.8 V in the H 2 /O 2 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 3 .
Materialart:
Online-Ressource
ISSN:
1433-7851
,
1521-3773
DOI:
10.1002/anie.201610738
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2017
ZDB Id:
2011836-3
ZDB Id:
123227-7