专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6024848A Electrochemical cell with a porous support plate 失效
标题翻译：电化学电池与多孔支撑板
公开(公告)号：US6024848A
公开(公告)日：2000-02-15
申请号：US60583
申请日：1998-04-15
申请人： Bryan Franz Dufner , Richard David Breault
发明人： Bryan Franz Dufner , Richard David Breault
IPC分类号： C25B9/08 , H01M8/02 , H01M8/04 , H01M8/08 , H01M8/10 , C25B9/00 , H01M2/14
CPC分类号： H01M8/0243 , C25B9/08 , H01M8/0245 , H01M8/0267 , H01M8/08 , H01M8/1007 , H01M2300/0082 , H01M8/0234 , H01M8/0239 , H01M8/04029 , H01M8/04291 , Y02P70/56
摘要： An improved electrochemical cell such as a fuel cell is disclosed including a porous support plate for enhancing transport of fluids throughout the cell and for enhancing capacitance and transient response capability of the cell. The electrochemical cell includes an electrolyte having opposed major surfaces with an anode and a cathode electrode supported in intimate contact with the opposed major surfaces. A porous support plate is secured adjacent each electrode, and each porous support plate includes a contact bi-layer in intimate contact with the electrode. Each contact bi-layer is comprised of a hydrophobic phase including a mixture of carbon black and a hydrophobic polymer defining a network of hydrophobic gas passages and each contact bi-layer also includes a hydrophilic phase including a mixture of carbon black and a proton exchange resin defining a network of hydrophilic liquid passages integrated throughout the contact bi-layer. Each porous support plate also includes a porous substrate layer adjacent and supporting the contact bi-layer. A method of manufacture of the porous support plate includes the steps of preparing a hydrophobic phase compound, preparing a hydrophilic phase compound, mixing and filtering the two compounds to form a contact bi-layer, transferring the contact bi-layer onto a porous substrate layer to form a porous support plate. An alternative method includes an additional step of activating the contact bi-layer in an acid bath at controlled electrical potentials to enhance capacitance of the cell.
摘要翻译：公开了一种改进的电化学电池，例如燃料电池，其包括用于增强流体在整个电池中的输送并用于增强电池的电容和瞬态响应能力的多孔支撑板。电化学电池包括具有相对的主表面的电解质，阳极和阴极电极与相对的主表面紧密接触。多孔支撑板固定在每个电极附近，并且每个多孔支撑板包括与电极紧密接触的接触双层。每个接触双层由包含炭黑和限定疏水性气体通道网络的疏水性聚合物的混合物的疏水相组成，并且每个接触双层还包括亲水相，其包括炭黑和质子交换树脂的混合物限定整个接触双层中集成的亲水液体通道的网络。每个多孔支撑板还包括邻近和支撑接触双层的多孔基底层。制造多孔支撑板的方法包括制备疏水相化合物，制备亲水相化合物，混合和过滤两种化合物以形成接触双层的步骤，将接触双层转移到多孔基材层上以形成多孔支撑板。替代方法包括在受控电位的酸浴中激活接触双层以增强电池电容的附加步骤。

IPRDB

热门服务

关于我们

友情链接

联系方式