Anode Materials Development for Solid Oxide Fuel Cells Using Hydrogen Sulfide as the Fuel

以废硫化氢为燃料，空气为氧化剂的高温固体氧化物燃料电池已通过试验，证明是可行的。 这种电池能够产生清洁的电能，同时将有毒气体转化为有用的原材料。 之前已经研究了许多不同的电解质材料，以确定与硫化氢一起使用的合适材料。 迄今为止研究的质子传导电解质材料都被发现在燃料电池中是不稳定的，但成功地发现了氧阴离子传导材料。 氧化钇稳定的氧化锆和氧化钐掺杂的氧化铈都是硫化氢存在下良好的阴离子导电电解质，本研究的目的是对硫化氢燃料固体氧化物燃料电池的电极-电解质界面进行基础研究。 在这样做的过程中，PI希望显着提高该设备的性能，使其既可以成为非温室气体发电源，也可以供应所需的商品化学品。 电极材料、电池设计和电池组件加工的改进都是该项目的目标。 通过使用更好的电极材料，将降低在本装置中观察到的电势损失。 此外，更先进的电池设计将消除空气泄漏，从而提高电池性能。 预计将使用更好的材料和更先进的电池设计来降低潜在的损耗。 氧化钇稳定的氧化锆，钐掺杂的氧化铈，和新开发的质子导体将作为可能的电解质材料进行研究。

AbstractJack WinnickGeorgia Institute of Technology9908460A high-temperature solid oxide fuel cell, which utilizes waste hydrogen sulfide as the fuel and air as the oxidant, has been tested and shown to be feasible. This cell has the ability to generate clean electrical energy and simultaneously convert a toxic gas into a useful raw material. Many different electrolyte materials have been previously studied to determine suitable materials for use with hydrogen sulfide. Proton-conducting electrolyte materials studied to date were all found to be unstable in the fuel cell, but success was found with oxy-anion conducting materials. Yttria-stabilized zirconia and samaria-doped ceria have both been found to be good anion-conducting electrolytes in the presence of hydrogen sulfide.The objective of this research is to carry out a fundamental investigation of the electrode-eletrolyte interface in the hydrogen sulfide-fueled solid oxide fuel cell. In doing so, the PI would like to significantly improve the performance of this device, so that it can become both a non-greenhouse gas power generation source, as well as a supply of a needed commodity chemical. Improvements in electrode materials, cell design, and in the processing of the cell components are all goals of this project. By using better electrode materials, the potential losses observed in the present apparatus will be lowered. In addition, a more advanced cell design will eliminate air leakage, thus improving cell performance. Lowering the potential losses with better materials and a more advanced cell design is expected. Yttria-stabilized zirconia, samaria-doped ceria, and newly developed proton conductors will be studies as possible electrolyte materials.