Abstract:
본 발명은 다공성 고분자 수지막; 및 상기 다공성 고분자 수지막의 적어도 1면에 형성되고, 상이한 일차 입자 직경 범위를 가지는 2종 이상의 실리카 및 불소계 수지를 포함한 코팅층;을 포함하며, 통기도가 4, 000s/100cc-ai r 이상인, 레독스 흐름전지용 다공성 분리막 및 이를 포함하는 레독스흐름전지에 관한 것이다.
Abstract:
표면과 두께 방향 모두의 전기전도성을 향상시킬 수 있는 복합재 분리판 및 그 제조 방법에 대하여 개시한다. 본 발명에 따른 복합재 분리판은 탄소섬유 직조물; 상기 탄소섬유 직조물의 내부에 충진된 전도성 분말; 및 상기 탄소섬유 직조물의 상면 및 하면에 각각 배치되어, 상기 탄소섬유 직조물과 합착된 상부 및 하부 전도성 코팅층;을 포함하는 것을 특징으로 한다.
Abstract translation:< p num =“0000”>一种能够改善表面和厚度方向上的导电性的复合隔膜以及制造该复合隔膜的方法。 根据本发明的复合隔板包括碳纤维编织物; 填充在碳纤维织物内部的导电粉末; 并且上部和下部导电涂层分别设置在碳纤维织物的上下表面上并与碳纤维织物结合。
Abstract:
In the development of solid polymer electrolyte fuel cell stacks for commercial purposes, it has been difficult to simultaneously achieve acceptable performance, start-up and shutdown durability, and tolerance to voltage reversal. The present invention resolves this problem by employing an appropriate selectively conducting layer composition in the anode combined with use of a fast hydrogen fill time in the anode components and flow fields during start-ups.
Abstract:
레독스 흐름 전지의 구성요소 중 하나인 분리막 기재에 이온성 무기입자가 첨가된 코팅 조성물을 적용함으로써 이온교환성을 높일 수 있는 코팅 조성물이 개시된다. 본 발명은 레독스 흐름 전지용 폴리올레핀계 다공성 분리막 기재의 일면 또는 양면에 코팅되는 조성물로서, 상기 코팅 조성물은 불소계 고분자 수지 1 내지 15중량%; 이온성 무기입자 1 내지 15중량%; 용매 60 내지 90중량%; 및 비용매 1 내지 10중량%;를 포함하는 코팅 조성물을 제공한다.
Abstract:
A method of making a membrane electrode assembly for a fuel cell comprising: providing an anode, a cathode, and an ion-exchange membrane interposed therebetween; providing an electrically insulating oxide which is functionalized with an antioxidant or with a chelating agent which is complexed with an antioxidant to form an antioxidant additive; and applying the antioxidant additive to at least one of the anode, the cathode, and the ion-exchange membrane. The antioxidant is at least one of a radical scavenger, a hydrogen peroxide decomposition catalyst or a hydrogen peroxide stabilizer.
Abstract:
An article comprising a first gas distribution layer (100), a first gas dispersion layer (200), or a first electrode layer, having first and second opposed major surfaces and a first adhesive layer having first and second opposed major surfaces, wherein the second major surface (102) of the first gas distribution layer (100), the second major surface (202) of the first gas dispersion layer (200), or the first major surface of the first electrode layer, as applicable, has a central area, wherein the first major surface of the first adhesive layer contacts at least the central area of the second major surface of the first gas distribution layer, the second major surface of the first gas dispersion layer, or the first major surface of the first electrode layer, as applicable, and wherein the first adhesive layer comprises a porous network of first adhesive including a continuous pore network extending between the first and second major surfaces of the first adhesive layer. The articles described herein are useful, for example, in membrane electrode assemblies, unitized electrode assemblies, and electrochemical devices (e.g fuel cells, redox flow batteries, and electrolyzers)
Abstract:
The present invention discloses a method of manufacturing gas diffusion layers (GDL) with a defined pattern of hydrophobic and hydrophilic regions. The method to produce electrically conductive porous materials with distributed wettability comprises the steps of: a) Coating the external and internal surfaces of a porous base material made of carbon fiber or Titanium with Fluoroethylene-Propylene (FEP) and/or perfluoroalkoxy (PFA) and/or Ethylene-Tetrafluoroethylene (ETFE) or any other hydrophobic polymer; b) Exposing the coated material to irradiation through a blocking mask such that only parts of the coated porous material are exposed; c) Immersing the previously exposed material in a monomer solution and heating to a temperature higher than 45°C, resulting in the graft co-polymerization of monomers on the FEP layer.