Fuel cell types Sample Clauses

Fuel cell types. The following diagram shows the basic conversion process in a fuel cell using the example of hydrogen as a fuel. Figure 27 Basic working principle of a fuel cell All fuel cells consist of two electrodes - the anode and the cathode. These are separated by an electrolyte with an ion-permeable membrane. After the fuel has been supplied to the anode, it is divided into electrons and protons. The free electrons flow into an outer circuit between the anode and cathode to be used as an electric current. The protons spread through the electrolyte to the cathode. At the cath- ode, the oxygen from the air combines with the electrons from the outer circuit and protons from the electrolyte. This results in water and heat. All fuel cell types are based on the reaction of a fuel with oxygen. The electrochemical reaction generates basically electricity, heat and water. From the fuel cell, the electricity is provided as direct current (DC). If alternating current (AC) is required for further use, DC from the fuel cell is routed to an inverter is converted there to AC. Author | ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇-▇▇▇▇▇▇ ▇▇▇▇▇ agreement no. | 101096809 Funded by the Horizon Europe Programme of the European Union under grant agreement No 101096809 Funded by the Horizon Europe guarantee of the United Kingdom, under project No 10068310 Funded by the Swiss State Secretariat for Education, Research and Innovation Deliverable Number | D1.1 Deliverable title | Relevant identified technical solutions Figure 28 the basic structure of an SOFC, a fuel cell being capable of directly using ammonia or methanol rather than hydrogen as fuel. This consists of a solid electrolyte (usually a ceramic), which is arranged between an anode and a cathode. The fuel is fed to the anode and the oxidising agent, usually air, to the cathode. The electrodes are solid, porous structures that allow the fuel and air to diffuse into the electrolyte, while the products of the electrochemical reaction on the anode side diffuse away from the electrolyte. The electrolyte conducts the oxygen ions, which are produced during the electrochemical reduction of molecular oxygen, from the cathode side to the anode side of the SOFC. The fuel diffuses through the anode to the anode-electrolyte interface. Here it reacts catalytically with the oxygen ions, releasing electrons which are transported through an external circuit and generate electricity. The indi- vidual cells are electrically connected in series with a metallic connection to i...