Carbon nanotubes based gas diffusion layers in direct methanol fuel cells

被引：42

作者：

Gao, Y. ^{[1
,2
]}

Sun, G. Q. ^{[1
]}

Wang, S. L. ^{[1
]}

Zhu, S. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

ENERGY | 2010年 / 35卷 / 03期

关键词：

Direct methanol fuel cells (DMFCs); Gas diffusion layer (GDL); Carbon nanotube (CNT); Porosity; Mass transfer; PERFORMANCE; CATHODE; WATER;

D O I：

10.1016/j.energy.2009.11.031

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A carbon nanotube based gas diffusion layer (CNT-GDL) for direct methanol fuel cells (DMFCS) was prepared by sintering the wet carbon paper made of CNT, polyacrylonitrile-based carbon fibre (PCF) and PTFE, completely replacing the commercial carbon paper based GDL (Toray-GDL). The results of X-ray diffraction (XRD), scanning electron microscope (SEM) and mercury intrusion porosimeter (MIP) showed that CNT-GDL is of higher graphitization degree, more abundant pores in the pore diameter range of 1000-3000 nm and better mass transfer ability, compared with those of Toray-GDL Electrochemical impedance spectroscopy (EIS) results display that the cell with CNT-GDL had better electrical conductivity and mass transfer ability than those of Toray-GDL As a result, the limiting current density and peak power density of DMFC single cell with CNT-GDL are improved by 40% and 27%, respectively. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：1455 / 1459

页数：5

共 17 条

[1] Oxygen reduction reaction kinetics and mechanism on platinum nanoparticles inside Nafion® [J].