Self-Supporting Oxygen Reduction Electrocatalysts
Made from a Nitrogen-Rich Network Polymer
Yong Zhao
Kazuya Watanabe
Kazuhito Hashimoto
10.1021/ja3085934.s001
https://acs.figshare.com/articles/journal_contribution/Self_Supporting_Oxygen_Reduction_Electrocatalysts_Made_from_a_Nitrogen_Rich_Network_Polymer/2463931
We report the design,
synthesis, and evaluation of a new type of
non-precious-metal catalyst made from network polymers. 2,6-Diaminopyridine
was selected as a building-block monomer for the formation of a nitrogen-rich
network polymer that forms self-supporting spherical backbone structures
and contains a high density of metal-coordination sites. A Co-/Fe-coordinating
pyrolyzed polymer exhibited a high specific oxygen reduction activity
with onset and half-wave potentials of 0.87 and 0.76 V vs RHE, respectively,
in neutral media. There was no crossover effect of organics on its
activity. The power output of a microbial fuel cell equipped with
this catalyst on its cathode was more than double the output with
a commercial 20 wt % Pt/C catalyst.
2012-12-05 00:00:00
crossover effect
backbone structures
oxygen reduction activity
catalyst
fuel cell
network polymers
0.76 V vs RHE
power output