Single step pyrolytic conversion of zeolitic imidazolate to CoO encapsulated N-doped carbon nanotubes as an efficient oxygen reduction electrocatalyst

被引：13

作者：

Khan, Inayat Ali ^{[1
]}

Badshah, Amin ^{[1
]}

Nadeem, Muhammad Arif ^{[1
]}

机构：

[1] Quaid I Azam Univ, Dept Chem, Catalysis & Nanomat Lab 27, Islamabad 45320, Pakistan

来源：

CATALYSIS COMMUNICATIONS | 2017年 / 99卷

关键词：

Energy conversion; Electrocatalyst; N-doped CNTs; Electrocatalytic oxygen reduction reaction; METAL-ORGANIC FRAMEWORKS; HIGHLY POROUS CARBON; MEMBRANE FUEL-CELLS; ALLOY NANOPARTICLES; NITROGEN; CATALYSTS; CATHODE; NANOSTRUCTURES; NUCLEATION; CORE;

D O I：

10.1016/j.catcom.2017.05.012

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：

Efficient and noble metal-free electrocatalyst could enhance conceivably fuel cell's affordable commercialization. In this esteem, we developed CoO embedded N-doped CNTs from zeolitic imidazolate framework (ZIF-12) by single step inert atmosphere calcination, to be used as oxygen reduction reaction (ORR) electrocatalyst. In the electrochemical studies performed, the CoO/N-CNTs has demonstrated an onset potential of 0.83 V vs. RHE, very close to the commercial Pt catalyst value, electron transfer number of 3.5 which approaches the theoretical value of 4 and current density of 3.35 mA cm(-2) at 2500 rmp. The excellent activity of the electrocatalyst is to be attributed to its waved-tubular structure casing CoO particles and to its high surface area as it was proved by TEM and gas adsorption analysis.

引用

页码：10 / 14

页数：5

共 35 条

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