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DMFC甲醇渗透问题的研究进展 李新海1,张淳1,张云河1 (1.中南大学冶金科学与工程学院,湖南,长沙,410083) 摘要:直接甲醇燃料电池(DMFC)是一种不需要燃料重整器而以甲醇直接进料的电化学装置.DMFCs的技术水平目前处于大规模商业化的准备阶段.鉴于DMFC商业化的主要障碍之一是甲醇渗透问题,全面解决甲醇渗透问题取决于许多因素,重点有以下几个方面:(1)改进电解质隔膜性能,(2)控制甲醇进料浓度,(3)改善电极催化活性,(4)改进MEA的结构及电池组装技术,(5)用其他醇取代甲醇,(6)用阴离子交换膜取代Nafion膜开发碱性DMFC.提供一种质子传导率高,而又能显著降低甲醇渗透率的新型质子膜是上述诸因素中最有效的措施之一. 关键词:燃料电池; DMFCs; 甲醇渗透; [全文内容正在添加中] ......
贵金属/半导体光电阳极在直接甲醇燃料电池中的应用翟春阳1,孙明娟1,杜玉扣2,朱明山11. 宁波大学材料科学与化学工程学院2. 苏州大学材料科学与化学化工学部摘 要:直接甲醇燃料电池(DMFCs)由于具有能量效率高,携带方便和环境友好等特点,作为新型清洁能源受到越来越多的关注.阳极催化剂的优劣是影响DMFCs...DMFCs中应用存在的问题和发展前景做了总结和展望.关键词:直接甲醇燃料电池;半导体纳米材料;电催化氧化;光电阳极;综述;......
直接甲醇燃料电池用Nafion膜的研究进展 浦鸿汀1,刘启志1 (1.同济大学,材料学院,功能高分子所,上海,200092) 摘要:讨论了用于直接甲醇燃料电池(DMFCs)的质子交换膜(PEMs)的工作原理与性能要求,介绍了Nafion膜的主要结构与性能特点以及用于DMFCs时存在的主要问题,以及目前国内外对直接甲醇燃料电池用Nafion膜改性的最新进展.围绕等离子体改性,有机/无机复合,共混技术对Nafion的改性问题,评述了其改性效果和存在的主要问题和Nafion膜和改性Nafion膜在直接甲醇燃料电池中的应用和可能的发展方向. 关键词:直接甲醇燃料电池; 质子交换膜; Nafion; 甲醇渗透; 质子导电; [全文内容正在添加中] ......
="ChDivSummary" name="ChDivSummary">To enable the use of metallic components in direct methanol fuel cells(DMFCs), issues related to corrosion resistance must be considered because of an acid environment induced by the solid electrolyte. In this study, we report the electrochemical behaviors of metal-fiber-based porous sintered components in a simulated corrosive environment of DMFCs. Three materials......
and Technology,Harbin Institute of Technology摘 要:To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells(DMFCs... electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs.关键词:......
DMFCs with PMFSF and commercial SUS316L felt (12 mol/L) Fig. 10 Dynamic characteristics of open circuit voltages under different structural conditions (12 mol/L) The influence of PMFSF structure..., it can be concluded that there exist an optimum structure and an optimal mass transfer resistance of the methanol barrier. Fig. 11 Anode bubble behaviors of passive air-breathing DMFCs with 80......
is essential to solve the serious environmental pollution and energy crisis. As a newly emerging energy conversion device, direct methanol fuel cells (DMFCs) possess many advantages such as high energy density, operational safety and pollution-free, and thus are widely applied in automobile and aerospace industries [1, 2]. The performance of DMFCs is highly relied on the electrochemical properties......
, 27(4): 445-450. [7] Han K, Lee J, Kim H. Preparation and characterization of high metal content Pt-Ru alloy catalysts on various carbon blacks for DMFCs[J]. Electrochimica Acta,2006, 52(4......
catalyst electrode is as low as 10-10 A/cm2. Obtaining a cathodic catalyst with a high electrocatalytic activity for oxygen reduction is important for the development of both PEMFCs and DMFCs[5-6......
-barrier layer for DMFCs[J]. Journal of The Electrochemical Society, 2004, 151(3): A463-A469. [9]Ermete A. Formation of carbon-supported Pt-M alloys low temperature fuel cells: a review[J]. Materials......
