Aligned polyaniline nanorods in situ grown on gas diffusion layer and their application in polymer electrolyte membrane fuel cells

被引：27
作者：
Fu, Xudong [1 ,2 ]
Wang, Suli [1 ]
Xia, Zhangxun [1 ]
Li, Yinhua [1 ]
Jiang, Luhua [1 ]
Sun, Gongquan [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cell & Battery, Dalian 116023, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Polyaniline nanorod; Ordered catalyst layer; In situ polymerization; Polymer electrolyte membrane fuel cell; Oxygen transport; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; THERMAL CONTACT RESISTANCE; OXYGEN REDUCTION; CARBON NANOTUBES; PERFORMANCE; CONDUCTIVITY; SUPPORT; CATHODE; ARRAYS; ELECTROCATALYSTS;
D O I：
10.1016/j.ijhydene.2015.12.193
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：
Catalyst layers (CLs) with spatially ordered structure can improve mass transport of reactants/products, which is essential for the high performance of polymer electrolyte membrane fuel cells (PEMFCs). In this study, aligned polyaniline (PANI) nanorods grown on gas diffusion layers by in situ polymerization are used as supports for platinum to fabricate ordered CLs. The length and diameter of the PANI nanorods can be controlled by optimizing the reaction temperatures or the aniline concentrations during the in situ polymerization process. With the optimized aligned PANI nanorods as supports of cathode, the mass specific power density of the PEMFC reaches 2.5 kW g(pt)(-1), which is 21% higher than that of the conventional PEMFC without PANI. This improvement can be attributed to the reduced oxygen transport resistance revealed by oxygen gain and electrochemical impedance spectroscopy. Copyright (C) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3655 / 3663
页数：9
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