Research and developments of electrocatalysts and membranes for proton exchange membrane fuel cells

The research progress in DICP of the electrocatalysts and membranes for proton exchange membrane (PEM) fuel cells will be presented here.The research progress in DICP of the electrocatalysts and membranes for proton exchange membrane (PEM) fuel cells will be presented here

Nitrogen-doped carbon Electrocatalysts for Oxygen Reduction Reaction in Proton Exchange Membrane Fuel Cells

Fuel Cell(FCs) technology, as a new renewable energy generation, has garnered great interest and attention around the world in the past decade because of its advantages such as high power density, environment friendly and so on. Besides, it has the potential to strengthen the national energy security by reducing dependence on petroleum products and offering a cleaner, more efficient alternatives of today energy technology.Fuel Cell(FCs) technology, as a new renewable energy generation, has garnered great interest and attention around the world in the past decade because of its advantages such as high power density, environment friendly and so on. Besides, it has the potential to strengthen the national energy security by reducing dependence on petroleum products and offering a cleaner, more efficient alternatives of today energy technology

Oxygen Reduction Reaction on Carbon Supported Ruthenium-based Electrocatalysts in PEMFC

The ruthenium-based electrocatalysts supported on carbon black were prepared by the decarbonylation of the transition metal carbonyl with the 1,6-hexanediol as the solvent. The catalysts are characterized via X-ray diffraction (XRD), transmission electron microscopy(TEM) and high resolution TEM(HRTEM). The electrochemical behaviours of the catalysts were investigated by cyclic voltammetry(CV)and rotating disk eletrode(RDE) measurements in 0.5 M H2SO4 solution. The catalysts demonstrate attractive catalytic activity towards the ORR. The catalyst is expected to be promising alternative non-Pt electrocatalysts for PEMFC

一种燃料电池用阴极催化剂及制备方法

本发明涉及一种燃料电池用阴极催化剂及制备方法，所述催化剂为空壳型碳担载Pt基纳米催化剂，以Pt或Pt与过渡金属组成的合金为活性组分，其通式为Pt或PtMx，其中，M=Ag、Au、Ru、Rh、Pd、Os、或Ir，0.05≤x≤0.95，催化剂粒径为10-100nm，壳体壁的厚度1-20nm。制备的催化剂Pt基组分利用率高，相比于传统的碳载Pt基纳米颗粒催化剂，本发明的催化剂在保证表面有效Pt基活性组分的前提下，省去传统纳米颗粒内部不参与反应的Pt基组分，提高Pt基组分的利用率；同时空壳结构诱导Pt基组分发生晶格畸变，产生电子调控作用，参与催化反应的Pt基组分催化活性高

一种液流电池用电极的处理方法

本发明涉及一种液流电池用电极的处理方法，首先将碳毡或石墨毡电极完全浸渍于去离子水中0.5-3h，取出烘干；将电极放入管式炉内的恒温区加热，在惰性气体的保护下升温至反应温度700-900℃，然后采用鼓泡法于管式炉内通入水蒸气，恒温反应60-300min后停止通入水蒸气，在惰性气氛下冷却至室温。处理后增大了电极的电催化活性，改善了电极材料的亲水性，使得电极表面更易于接触电解液，增大了反应面积，进而增大了电极的电催化活性，从而提高了包含其的全钒液流电池的电压效率和能量效率

Highly Graphitic Carbon Xerogel as a Stable Support for Proton Exchange Membrane Fuel Cells

Electrocatalyst support, which is used to decrease the usage of platinum and increase the utilization of electrocatalyst, is becoming one of the key materials in PEMFCs. At the same time, its properties directly affect the performance and the durability of fuel cells. In the adverse operating conditions of PEMFCs, such as the acidic environment, the high potential condition and the presence of Pt, Vulcan XC-72 carbon black used as electrocatalyst support can be easily oxidized and degraded

一种用于燃料电池的催化剂及其应用

本发明涉及一种用于燃料电池的催化剂及其应用，以天然鳞片石墨为原料，用hummers方法制备氧化石墨烯粉末；将石墨烯粉末与吡咯单体在分散剂中超声分散后，向其中逐滴滴加氧化剂溶液，搅拌聚合；将得到混合液，离心、洗涤得到氧化石墨-聚吡咯混合物；将上述氧化石墨-聚吡咯混合物分散于水溶液中，利用水合肼将其还原；将上述得到的混合物离心、洗涤得到石墨烯-聚吡咯复合材料。本发明制备的石墨烯-聚吡咯复合材料具有高比表面积、高导电性，高稳定性。同时，以此复合材料为载体制备的贵金属催化剂具有很高的稳定性，降低了贵金属的流失，抑制了贵金属的团聚

一种过渡金属簇硫族化合物燃料电池用阴极催化剂及制备

本发明涉及燃料电池，具体地说是一种过渡金属簇硫族化合物燃料电池用阴极催化剂及制备，以过渡金属簇硫族化合物为活性组分，其通式为 IrxXy，X＝S或Te，x与y的比为95∶5～20∶80；或通式为IrxN1-xXy，N＝Fe， Co，Ni，Cu，Cr，Mo，W，Ti，Zr，Ta，Nb或V；X＝S、Se或Te，0.05≤x ≤0.95，l与y的比为95∶5～1∶10；本发明催化剂用作质子交换膜燃料电池阴极催化剂时，对氧还原具有高的催化活性。同时，这类催化剂具有高的抗甲醇氧化能力，还可以用做直接甲醇燃料电池的阴极催化剂。该类催化剂与铂基催化剂相比价格低廉，且制备工艺简单，耗时短，环境友好。带填