Porphyrin Aerogel Catalysts for Oxygen Reduction Reaction in Anion-Exchange Membrane Fuel Cells

被引：2
|
作者：
Zion, Noam [1 ]
Douglin, John C. [2 ]
Cullen, David A. [3 ]
Zelenay, Piotr [4 ]
Dekel, Dario R. [2 ,5 ]
Elbaz, Lior [1 ]
机构：
[1] Bar Ilan Univ, Dept Chem, IL-5290002 Ramat Gan, Israel
[2] Technion Israel Inst Technol, Wolfson Dept Chem Engn, IL-3200003 Haifa, Israel
[3] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[4] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA
[5] Technion Israel Inst Technol, Nancy & Stephen Grand Technion Energy Program, IL-3200003 Haifa, Israel
来源：
ADVANCED FUNCTIONAL MATERIALS | 2021年 / 31卷 / 24期
基金：
欧盟地平线“2020”; 以色列科学基金会;
关键词：
AEMFC; aerogels; electrocatalysis; ORR; porphyrins;
D O I：
10.1002/adfm.202100963
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Platinum group metal (PGM)-free catalysts for oxygen reduction reaction have shown high oxygen reduction reaction activity in alkaline media. In order to further increase the power density of anion-exchange membrane fuel cells (AEMFCs), PGM-free catalysts need to have a high site density to reach high current densities. Herein, synthesis, characterization, and utilization of heat-treated iron porphyrin aerogels are reported as cathode catalysts in AEMFCs. The heat treatment effect is thoroughly studied and characterized using several techniques, and the best performing aerogel is studied in AEMFC, showing excellent performance, reaching a peak power density of 580 mW cm(-2) and a limiting current density of as high as 2.0 A cm(-2), which can be considered the state-of-the-art for PGM-free based AEMFCs.
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页数：7
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