Fe azaphthalocyanine unimolecular layers (Fe AzULs) on carbon nanotubes for realizing highly active oxygen reduction reaction (ORR) catalytic electrodes

被引：33

作者：

Abe, Hiroya ^{[1
,2
]}

Hirai, Yutaro ^{[3
]}

Ikeda, Susumu ^{[1
]}

Matsuo, Yasutaka ^{[4
]}

Matsuyama, Haruyuki ^{[5
]}

Nakamura, Jun ^{[5
]}

Matsue, Tomokazu ^{[6
]}

Yabu, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Aoba Ku, 6-3 Aramaki Aza Aoba, Sendai, Miyagi 9808578, Japan

[3] Tohoku Univ, Grad Sch Engn, Aoba Ku, 6-6 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan

[4] Hokkaido Univ, Res Inst Elect Sci, Kita Ku, Kita21,Nishil0, Sapporo, Hokkaido 0010021, Japan

[5] Univ ElectroCommun UEC Tokyo, Dept Engn Sci, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan

[6] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, 6-6-11-604 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan

来源：

NPG ASIA MATERIALS | 2019年 / 11卷 / 1期

基金：

日本学术振兴会;

关键词：

IRON PHTHALOCYANINE; GRAPHENE; NITROGEN; ENERGY; SITES; NANOCRYSTALS; PORPHYRIN; EFFICIENT;

D O I：

10.1038/s41427-019-0154-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new class of Pt-free catalysts was designed that included molecular iron phthalocyanine (FePc) derivatives, namely, iron azaphthalocyanine (FeAzPc) unimolecular layers (Fe AzULs) adsorbed on oxidized multiwall carbon nanotubes (oxMWCNTs). FeAzPcs were dissolved in organic solvents such as dimethyl sulfoxide (DMSO), and catalytic electrodes modified with molecularly adsorbed FeAzPcs were successfully prepared. The optimized composition of the catalytic electrodes was determined, and the electrodes exhibited superior activity for the oxygen reduction reaction (ORR) and better durability than conventional FePc catalytic electrodes and commercial Pt/C due to the electron-withdrawing properties of the pyridinic nitrogen in FeAzPcs. The catalytic electrodes that were molecularly modified with FeAzPcs have higher activities than those composed of FeAzPc crystals and oxMWCNTs. To the best of our knowledge, among all of the conventional catalysts based on modified MWCNTs and oxMWCNTs, this catalyst exhibits the highest activity. Unlike other Pt-free catalytic electrodes, the Fe AzUL catalytic electrodes can be prepared by low-cost processing without pyrolysis and are therefore promising catalytic electrode materials for applications, such as polymer electrolyte fuel cells and metal-air batteries.

引用

页数：12