Advanced MEA with Ultralow Pt loading based on orderd conductive polymers nanowire array

Advanced MEA with Ultralow Pt loading based on orderd conductive polymers nanowire arra

一种用于测定液体燃料消耗量的计量装置及其计量方法

一种测定液体燃料消耗量的计量装置，包括一计量罐，一控制器，设置于计量罐壁面上的第一和第二液位传感器，一连接密闭的燃料供应装置和计量罐、一连接计量罐与燃料消耗装置的第一和第二燃料流通管路，以及控制燃料流入或流出计量罐的一个或多个系统部件。测定过程中，先将燃料输送到计量罐中，燃料液位到达第一液位传感器时停止，再将计量罐中的燃料输送到燃料消耗装置中，燃料液位到达第二液位传感器时停止。然后再往计量罐中输送燃料，周而复始。计量罐上两个液位传感器间的容量为定值，控制器根据液位传感器的信号变化情况可以计算出消耗了多少燃料。该装置具有结构简单，成本低廉等优点，同时利用该装置测量燃料消耗量具有精度高、准确性好、易于实现等优点

Zirconium phosphate/Nafion115 composite membrane for high-concentration DMFC

Zirconium phosphate/Nafion115 (ZrP/Nafion115) composite membrane was prepared. It was characterized by means of XRD, EDX, ion-exchange capacity (IEC), thermogravimetry analysis (TGA) and so on. The results suggested that the mean particle size of zirconium phosphate within the composite membrane was about 5.0 nm. The composite membrane had comparable thermal stability with Nafion115, and its IEC markedly increased. The methanol crossover through it decreased by about 50% compared with that through Nafion115, while the proton conductivity slightly decreased. The single performance tests demonstrated that the use of composite membrane reduced mass transport polarization, thus resulting in better cell performance at 75 degrees C with higher methanol concentration (10M) as fuel. The preliminary result of durability test showed that the single cell with composite membrane can stably run 100h above 0.4V. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved

一种燃料电池膜电极压合装置及其操作方法

一种燃料电池膜电极压合装置，包括固定台、固定杆、下热压台、模具固定台、上热压台，膜电极固定模具；所述上热压台、模具固定台和下热压台从上到下设置在固定台上，固定杆从上到下依次穿过上热压台、模具固定台和下热压台并固定在固定台上；所述模具固定台上设置模具放置槽，模具放置槽内放置膜电极固定模具。与现有技术相比，本发明所述膜电极压合装置具有结构简单，易于制造，可根据膜电极的大小更换不同尺寸的压合模具，从而压合不同尺寸的聚酯框到不同尺寸的膜电极上

Highly stable PtRuTiOx/C anode electrocatalyst for direct methanol fuel cells

In the present investigation, PtRuTiOx/C electrocatalyst was prepared by a modified polyol synthesis method and the as-prepared electrocatalyst was treated under the reductive atmosphere (30 vol% H-2 in Ar) at 500 degrees C for 2 h (denoted as PtRuTiOx/C-500) to enhance the interaction between the metal particles and the support. For comparison, the commercial PtRu/C electrocatalyst was also treated by the same procedure as PtRuTiOx/C (denoted as PtRu/C-500). Transmission electron microscopy results indicated that PtRuTiOx/C electrocatalyst exhibited not only a uniform dispersion and narrow size distribution with a smaller particle size, but also excellent stability during the thermal treatment. In contrast, the commercial PtRu/C electrocatalyst is not stable during the thermal treatment and the metal particles greatly agglomerated. The results of CO-stripping voltammetry, single direct methanol fuel cell tests and life-time test jointly showed that PtRuTiOx/C-500 had better durability than commercial PtRu/C while keeping a desirable activity toward methanol electro-oxidation, which may be attributed to the addition of titanium oxide that improved the interaction between noble metal particles and the support. (C) 2006 Elsevier B.V. All rights reserved

一种基于斯特林发动机的散热器

一种基于斯特林发动机的散热器，包括斯特林发动机、热交换器和阴极物料散热器；热交换器将热量传递给斯特林发动机，斯特林发动机把热能转换成动能，带动飞轮转动，飞轮上的扇叶产生的气流辅助阴极物料散热器散热。本发明所述散热器应用于直接液体燃料电池系统中时利用电堆阳极出口排出的物料携带的热量，为电堆阴极排出的物料散热。本发明所述散热器应用于氢氧质子交换膜燃料电池系统中时利用电堆冷却水携带的热量，为电堆阴极排出的物料散热。应用本发明所述散热器有利于燃料电池电堆阴极水的回收，还可以节省电能

空气中so2对直接甲醇燃料电池性能影响

直接甲醇燃料电池(DMFC)通常采用空气中氧气作为氧化剂,但空气中硫化物、氮化物等污染物会对电池性能造成影响.本文采用恒流放电曲线、极化曲线、循环伏安扫描(CV)和电化学阻抗谱(EIS)等方法,研究SO2对DMFC电池性能影响,分析其毒化作用机制.研究表明,SO2毒化导致催化剂电化学活性面积(ECSA)减小,氧还原反应(ORR)电荷转移电阻增大,从而造成DMFC电池开路电压和工作电压加速衰减,峰值功率密度减小.进一步探究了三种恢复策略,空气吹扫与I-V变载操作都只能实现电池性能的部分恢复,CV扫描可完全恢复电池性能

一种M/N-C催化剂及其制备和应用

本发明涉及非铂催化剂，具体的说涉及一种用于质子交换膜燃料电池的氧还原催化剂及其制备和应用，其可按如下方法制备，(1)聚吡咯(PPy)的合成；(2)M/N-C催化剂的制备；所述的M/N-C催化剂可用作质子交换膜燃料电池阴极氧还原催化剂。待填