...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Materials >A Novel Composite Cathode for Low-Temperature SOFCs Based on Oxide Proton Conductors
【24h】

A Novel Composite Cathode for Low-Temperature SOFCs Based on Oxide Proton Conductors

机译：基于氧化物质子导体的新型低温SOFC复合阴极

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The demand for clean, secure, and renewable energy has stimulated great interest in fuel cells. Among all types of fuel cells, solid oxide fuel cells (SOFCs) have attracted much attention because of its high energy efficiency, modularity, and excellent fuel flexibility; in fact, they are the only fuel cell system that has the potential for direct utilization (or through internal reforming) of readily available fuels, gasified coal gas, and renewable fuels. Unfortunately, the current SOFC systems are still too expensive for broad commercialization. To be economically competitive, the operating temperature has to be sufficiently low so that much less expensive materials may be used. Compared with low-temperature SOFCs based on oxygen ion conductors (e.g., Gd-doped ceria or Y-stabilized zirconia), SOFCs based on oxide proton conductors offer several advantages. First, lower activation energy for proton than for oxygen ion transport implies that the ionic conductivities of proton conductors have less temperature dependence, potentially exhibiting higher ionic conductivities at intermediate or low temperatures. Second, the fuel will not be diluted during fuel cell operation since water is produced in the cathode compartment, not in the fuel side as does for an oxygen ion conductor-based SOFC.
机译：对清洁，安全和可再生能源的需求激发了人们对燃料电池的极大兴趣。在所有类型的燃料电池中，固体氧化物燃料电池（SOFC）由于其高能效，模块化和出色的燃料灵活性而备受关注。实际上，它们是唯一有潜力直接利用（或通过内部重整）易于获得的燃料，气化煤气和可再生燃料的燃料电池系统。不幸的是，当前的SOFC系统对于广泛的商业化仍然太昂贵。为了具有经济竞争力，工作温度必须足够低，以便可以使用便宜得多的材料。与基于氧离子导体的低温SOFC（例如掺Gd的二氧化铈或Y稳定的氧化锆）相比，基于氧化物质子导体的SOFC具有许多优势。首先，质子的活化能比氧离子迁移的活化能低意味着质子导体的离子电导率具有较小的温度依赖性，可能在中温或低温下表现出较高的离子电导率。其次，由于在阴极室而不是在燃料侧会产生水，而不是像基于氧离子导体的SOFC那样在燃料侧产生水，因此燃料不会在燃料电池运行期间被稀释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号