碱性阴离子交换膜燃料电池膜电极

Membrane Electrode Assembly for Alkaline Anion Exchange Membrane Fuel Cel

Key Materials for Proton Exchange Membrane Fuel Cell

As a promising candidate for new power supplier, Proton Exchange Membrane Fuel Cell (PEMFC) is on the way of its commercialization. Although durability, cost, hydrogen generation and distribution are the main issues of the PEMFC wide application, aiming at promoting the application on fuel cell vehicles, tremendous progress has been made on the fuel cell key materials, i.e., electrocatalyst, proton exchange membrane and bipolar plate in the past decade. The key issues of PEMFCs for automobiles operation are electrocatalyst degradation, membrane degradation and bipolar plate corrosion. The stability of the catalyst and impurity effect are essential for the PEMFC performance and lifetime. Low Pt and non-Pt catalyst are developed for PEMFC operation. Kinds of composite membrane materials have been synthesized for membrane size stability improvement, high temperature and self-humidifying operations. To improve bipolar plate characteristics, expended graphite, metal and composite bipolar plates have been tested in PEMFCs’ application. From the long term research point of view, the breakthrough of material research will accelerate the commercialization of PEMFC

Transient behavior of water generation in a proton exchange membrane fuel cell

The effect of water generation on the performance of proton exchange membrane fuel cell (PEMFC) was investigated by using a periodical linear sweep method. Three different kinds of I-V curves were obtained, which reflected different amount of water uptake in the fuel cell. The maximum water uptake that could avoid flooding in the fuel cell and the hysteresis of water diffusion were also discussed. Quantitative analysis of water uptake and water transport phenomena in this study were conducted both experimentally and theoretically. Results showed that the water uptake capacity for the fuel cell under no severe flooding was 27.837 mg cm(-2). The transient response of the internal resistance indicated that the high frequency resistance (HFR) lagged the current with a value of about 20 s. The effect of purging operation on the internal resistance of the fuel cell was also explored. Experimental data showed that the cell experienced a continuous 8-min purging process can maintain at a relatively steady and dry state. (C) 2007 Elsevier B.V. All rights reserved

车用燃料电池现状与电催化

本文综述了近年来车用燃料电池电催化的发展状况，分析了车用燃料电池电催化的发展趋势，重点介绍了大连化学物理研究所在燃料电池电催化方面的研究进展．指出车用燃料电池电催化的发展方向是提高现有铂基催化剂的活性，在保证车用燃料电池在变载等动态工况下的可靠性与寿命的前提下，应降低膜电极的贵金属铂用量，发展低铂／非铂电催化剂．针对车用燃料电池的使用条件，应发展抗燃料气与空气中杂质的电催化方法与抗腐蚀催化剂载体．从长远考虑，重点发展碱性聚合物膜燃料电池，拓展利于活化顺磁性氧的催化方法，有望摆脱车用燃料电池对铂催化剂的依赖

一种改善质子交换膜燃料电池稳定性的方法

本发明提出了一种改善质子交换膜燃料电池稳定性的方法。传统的碳纸处理方法，导致碳纸的内部憎水物质不能均匀分布，容易发生水淹。本发明在传统方法基础上，改进了碳纸的憎水处理的工艺，将憎水化过程在一个真空装置中进行，使憎水剂均匀的浸渍到孔隙中，进而实现憎水剂的均匀分布，改善了电极的性能和稳定性

一种有效降低燃料电池Pt担量的催化层结构

物理化学带填

一种异相阴离子交换膜的制备方法

物理化学带填

质子交换膜燃料电池阳极抗CO催化剂的研究进展

质子交换膜燃料电池采用重整气或甲醇为燃料时，阳极催化剂的ＣＯ中毒问题是影响其性能的主要原因，使用抗ＣＯ催化剂是解决该问题的根本方法，文中对质子交换膜燃料电池的ＣＯ问题进行了简介，比较详细地介绍了目前抗ＣＯ催化剂研究的发展现状，包括各种催化剂的活性、制法及抗ＣＯ机理，Ｍｏ、Ｗ是很有希望改进阳极催化剂抗ＣＯ能力的材料，多组分催化剂是比较有希望的方向

质子交换膜燃料电池阳极抗CO催化剂的研究进展

质子交换膜燃料电池采用重整气或甲醇为燃料时，阳极催化剂的ＣＯ中毒问题是影响其性能的主要原因，使用抗ＣＯ催化剂是解决该问题的根本方法，文中对质子交换膜燃料电池的ＣＯ问题进行了简介，比较详细地介绍了目前抗ＣＯ催化剂研究的发展现状，包括各种催化剂的活性、制法及抗ＣＯ机理，Ｍｏ、Ｗ是很有希望改进阳极催化剂抗ＣＯ能力的材料，多组分催化剂是比较有希望的方向