Abstract:
Disclosed are electrochemical cells and methods of use or operation, in which one or more gas producing electrodes operate in a manner that is bubble-free or substantially bubble-free. It has been identified that it can be energetically more favourable for newly formed or dissolved gas, within a liquid or gel electrolyte, to join a relatively large, pre-existing bubble or gas region than it is for the gas to form an independent new bubble on a surface. An electrochemical cell can be optimised by determining improved settings for different variables of the electrochemical cell. Three main relationships between the variables are defined and are believed to be critical to optimising the performance of a gas-producing electrode, being the Electrolyte Factor (EF), the Power Density Factor (PF) and the Crossover (CO).
Abstract translation:公开了电化学电池和使用或操作方法,其中一个或多个产生气体的电极以无气泡或基本上无气泡的方式操作。 已经发现,它可以积极地更有利于新形成或溶解在气体或凝胶电解质中的气体,以加入比气体形成独立的新气泡更大的,预先存在的气泡或气体区域 在表面上。 电化学电池可以通过确定电化学电池的不同变量的改进设置来优化。 定义变量之间的三个主要关系,并被认为对优化产气电极的性能(电解质因子(EF),功率密度因子(PF)和交叉点(CO))至关重要。 p >
Abstract:
Die Erfindung betrifft eine Bipolarplatte, die eine Grundfläche und darauf vorgesehene erhabene Strukturen umfasst. Die erhabenen Strukturen weisen je einen ersten Bereich und einen zweiten Bereich auf. Der erste Bereich ist dabei ausgebildet, in eine mit der Bipolarplatte in Kontakt zu bringende Gasdiffusionsschicht einzudringen und eine Kontaktfläche zwischen der Bipolarplatte und der Gasdiffusionsschicht zu vergrößern. Der zweite Bereich ist zwischen der Grundfläche der Bipolarplatte und dem ersten Bereich der erhabenen Strukturen vorhanden. Eine Form und/oder Anordnung des ersten Bereichs und/oder des zweiten Bereichs ist ausgebildet, die Grundfläche der Bipolarplatte und die Gasdiffusionsschicht auf einem Abstand zu halten.
Abstract:
A membrane and catalyst composite includes an ion-conducting membrane having a surface for the passage of ions, and having a near boundary layer that includes the surface and extends a distance into the membrane. A layer of electrocatalyst particles are embedded in the near boundary layer of the membrane to produce an electrode. The electrode has a porosity that allows the flow of gas through the electrode, and it has a surface roughness that increases the catalytically-active area of the electrode.
Abstract:
An automotive or other power system including a flow cell, in which the stack that provides power is readily isolated from the storage vessels holding the cathode slurry and anode slurry (alternatively called "fuel") is described. A method of use is also provided, in which the "fuel" tanks are removable and are separately charged in a charging station, and the charged fuel, plus tanks, are placed back in the vehicle or other power system, allowing fast refueling. The technology also provides a charging system in which discharged fuel is charged. The charged fuel can be placed into storage tanks at the power source or returned to the vehicle. In some embodiments, the charged fuel in the storage tanks can be used at a later date. The charged fuel can be transported or stored for use in a different place or time.
Abstract:
A fuel cell includes a hydrogen permeable membrane, an electrolyte layer, a cathode and a hydrogen non-permeable layer. The electrolyte layer is formed on the hydrogen permeable membrane and has proton conductivity. The cathode is provided on the electrolyte layer. The hydrogen non-permeable layer covers a sidewall of the hydrogen permeable membrane. A manufacturing method of a fuel cell includes forming an electrolyte layer having proton conductivity on a hydrogen permeable membrane, forming a hydrogen non-permeable membrane on a sidewall of the hydrogen permeable membrane with an electrolytic plating treatment after forming the electrolyte layer, and forming a cathode on the electrolyte layer.
Abstract:
A fuel cell includes a hydrogen permeable metal substrate and an electrolyte layer. The hydrogen permeable metal substrate acts as an anode. The electrolyte layer is provided on the hydrogen permeable metal substrate and has proton conductivity. At least a part of the hydrogen permeable metal substrate is composed of a metal having a recrystallization temperature higher than a given temperature
Abstract:
First, a solid-state electrolyte layer that has conductivity for ions of one of hydrogen and oxygen is formed. After that, a dense layer made of an electrode material that has electron conductivity, catalyst activity to accelerate the electrochemical reaction, and a characteristic of allowing permeation of ions and/or atoms of the other one of hydrogen and oxygen is formed on a surface of the electrolyte layer. Then a fuel cell structure that includes the electrolyte layer and the dense layer is built. After that, the electrochemical reaction is caused to progress by supplying a fuel and oxygen to the fuel cell structure, so that in the dense layer, many micropores extending through the dense layer in the film thickness direction are created due to the generated water that is created between the electrolyte layer and the dense layer.