【24h】

SULFUR-TOLERANT CERMET ANODES

机译:耐硫金属阳极

获取原文
获取原文并翻译 | 示例

摘要

The surface chemical behavior of the materials chosen for SOFC anodes determines the specification of a compatible fuel for reliable long-term operation. With the conventional nickel-zirconia cermet, for example, a hydrogen-carbon monoxide mixture can be used. Hydrocarbons on the other hand require a pre-reforming to avoid anode damage due to carbon precipitation. Impurities in the fuel may be incompatible with either the anode material or the reforming catalyst, with potentially serious consequences. The cost of an adequate fuel processing subsystem is not negligible, and its reliability is critical. More robust and impurity-tolerant anodes could therefore significantly accelerate the practical acceptance of solid oxide fuel cells. One option, of course is to introduce innovative anode materials. However given the established engineering experience, and the very satisfactory electrochemical performance of nickel-stabilized zirconia cermet anodes, the other possibility is surface modification to provide a chemically more robust metal surface, resistant to poisoning by impurities. Initial work in that direction, involving introduction of heavy transition metal species as catalysts, is here reported.
机译:为SOFC阳极选择的材料的表面化学行为决定了可兼容燃料的规格,以确保长期可靠运行。例如,对于常规的镍-锆金属陶瓷,可以使用氢-一氧化碳混合物。另一方面,碳氢化合物需要进行预重整,以避免由于碳沉淀而损坏阳极。燃料中的杂质可能与阳极材料或重整催化剂不兼容,从而可能造成严重后果。适当的燃料处理子系统的成本不可忽略,并且其可靠性至关重要。因此,更坚固耐用且能容忍杂质的阳极可以大大加快固体氧化物燃料电池的实际接受度。当然,一种选择是引入创新的阳极材料。但是,鉴于已建立的工程经验以及镍稳定的氧化锆金属陶瓷阳极的非常令人满意的电化学性能,另一种可能性是进行表面改性以提供化学上更坚固的金属表面,以防止杂质中毒。在此方向上的初步工作,其中涉及引入重过渡金属物种作为催化剂,据报道。

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