科德寶氣體擴散層

氣體擴散層

科德寶是全球領先的非織造布供應商。基于其高科技產品組合，科德寶為所有聚合物電解質膜燃料電池 (PEMFC) 和直接甲醇燃料電池 (DMFC) 應用提供 GDL 材料。

GDL 材料是燃料電池中的性能關鍵部件之一，既可作為膜電極組件 (MEA) 的功能結構，也可作為支撐結構。

GDL 材料的卓越特性：科德寶 GDL 材料具有高導電性和導熱性，保護膜免受潛在的穿刺損壞，允許在 MEA 制造中進行安全且高效的下游加工，并根據燃料電池運行條件為優化質量傳輸而量身定制。這種優化確保向催化劑層提供足夠的氫氣和氧氣（空氣）氣體反應物。同時，必須控制氣態和液態產物水的運動，以保持催化劑位點對反應物開放，同時防止膜變干。

這種最重要的水管理主要是通過我們特殊配方的微孔層 (MPL) 涂層和處理來實現的，這些涂層和處理具有導電性和導熱性以及疏水性的完美平衡。最新一代的科德寶 GDL 涵蓋了廣泛的應用；用于汽車，需要改進的冷啟動行為和非常高的質量傳輸能力，以實現高電流密度運行，用于高濕度的固定系統，以及在開式陰極備用電源燃料電池中預期的極度干燥的運行條件。

應用科德寶發明的無紡布技術，我們的 GDL 獨特的三維纖維結構滿足了這些具有挑戰性的質量傳輸要求，此外還提供了機械可壓縮性，有助于適應雙極板和膜等電池堆組件的厚度變化。

請參閱我們的應用顧問文件，為您的燃料電池應用選擇合適的材料。除了燃料電池，科德寶的碳纖維基非織造布也非常適用于其他應用，例如水解或儲能。

Gas Diffusion Layers

Freudenberg is worldwide the leading nonwoven supplier. Based on its high technology portfolio Freudenberg supplies GDL materials for all polymer electrolyte membrane fuel cell (PEMFC) and direct methanol fuel cell (DMFC) applications.

GDL materials are one of the performance critical components in fuel cells acting both as the functional as well as the supporting structure for membrane electrode assembly (MEA).

Superior characteristics of GDL materials: Freudenberg GDL materials exhibit high electrical and thermal conductance, protect the membrane from potential puncture damage, allow safe and productive downstream processing in MEA manufacturing, and are tailored for optimized mass transport according to the fuel cell operating conditions. This optimization ensures sufficient supply of the hydrogen and oxygen (air) gas reactants to the catalyst layers. Concurrently the movement of product water in gas and liquid states must be managed to keep catalyst sites open for reactants while preventing membrane dry-out.

This all-important water management is primarily achieved through our specially formulated micro-porous layer (MPL) coatings and treatments that have the perfect balance of electrical and thermal conductivity and hydrophobicity. The latest generation of Freudenberg GDL covers a wide range of applications; for automotive, which requires improved cold start behavior and very high mass transport capability for high current density operation, for highly humidified stationary systems, and for extremely dry operation conditions expected in open cathode back-up power fuel cells.

Applying the nonwoven technology invented by Freudenberg, our GDL's unique three dimensional fiber structures meet these challenging mass transport requirements and furthermore offer mechanical compressibility that helps to accommodate thickness variations of cell stack components such as bipolar plates and membrane.

Please see our application advisor document to select appropriate materials for your fuel cell application. Besides for fuel cells, Freudenberg's carbon fiber based nonwovens are well suitable for other applications such as hydrolysis or energy storage as well.

https://fuelcellcomponents.freudenberg-pm.com/Products/gas-diffusion-layers

大家好，艾邦氫能源技術網(www.jnsjbj.cn)的微信公眾號已經開通，主要分享氫燃料電池堆（雙極板，質子膜，擴散層，密封膠，催化劑等），儲氫罐(碳纖維，環氧樹脂，固化劑，纏繞設備，內層塑料及其成型設備，儲氫罐，車載供氫系統，閥門)，制氫，加氫，氫燃料汽車動力系統等相關的設備，材料，配件，加工工藝的知識。同時分享相關企業信息。歡迎大家識別二維碼，并通過公眾號二維碼加入微信群和通訊錄。