A highly efficient and durable carbon nanotube-based anode electrocatalyst for water electrolyzers

被引：21

作者：

Fujigaya, Tsuyohiko ^{[1
,2
,4
]}

Shi, Yilei ^{[1
]}

Yang, Jun ^{[2
]}

Li, Hua ^{[3
]}

Ito, Kohei ^{[3
]}

Nakashima, Naotoshi ^{[1
,2
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, World Premier Int Res Ctr Initiat, Fukuoka 8190395, Japan

[3] Kyushu Univ, Dept Hydrogen Energy Syst, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[4] JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 21期

关键词：

OXYGEN EVOLUTION REACTION; FUEL-CELL ELECTROCATALYST; MEMBRANE ELECTROLYZERS; ACTIVE SURFACE; OXIDE; DURABILITY; IRIDIUM; CATALYSTS; SUPPORT; POLYBENZIMIDAZOLE;

D O I：

10.1039/c7ta01318c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Iridium (Ir) nanoparticles with a uniform diameter of 1.1 +/- 0.2 nm were homogeneously deposited on multi-walled carbon nanotubes (MWNTs) wrapped by polybenzimidazole (PBI), in which PBI enables efficient anchoring of the Ir nanoparticles. The Ir nanoparticles were electrochemically oxidized to afford Ir oxide (IrOx) and evaluated as an oxygen evolution reaction catalyst by half-cell measurements. The composite was also used as an anode electrocatalyst for proton exchange membrane water electrolyzers (PEMWEs). It was revealed that the IrOx on the PBI-wrapped MWNTs exhibited a very high electrocatalytic mass activity and durability even compared to the other state-of-the-art Ir-based catalysts, while the IrOx deposited on conventional carbon black showed only a poor durability.

引用

页码：10584 / 10590

页数：7

共 46 条

[11] CHARACTERIZATION OF DSA-TYPE OXYGEN EVOLVING ELECTRODES - CHOICE OF A COATING [J].