UC知道帮忙翻译下化学文献
来源：百度知道 编辑：UC知道 时间：2024/09/20 11:58:30
Disruption of extended defects in solid oxide fuel
cell anodes for methane oxidation
Point defects largely govern the electrochemical properties of
oxides: at low defect concentrations, conductivity increases with
concentration; however, at higher concentrations, defect–defect
interactions start to dominate1,2. Thus, in searching for electrochemically
active materials for fuel cell anodes, high defect
concentration is generally avoided. Here we describe an oxide
anode formed from lanthanum-substituted strontium titanate
(La-SrTiO3) in which we control the oxygen stoichiometry in
order to break down the extended defect intergrowth regions
and create phaseswith considerable disordered oxygen defects.We
substitute Ti in these phases with Ga and Mn to induce redox
activity and allow more flexible coordination. The material
demonstrates impressive fuel cell performance using wet hydrogen
at 950 8C. It is also i
cell anodes for methane oxidation
Point defects largely govern the electrochemical properties of
oxides: at low defect concentrations, conductivity increases with
concentration; however, at higher concentrations, defect–defect
interactions start to dominate1,2. Thus, in searching for electrochemically
active materials for fuel cell anodes, high defect
concentration is generally avoided. Here we describe an oxide
anode formed from lanthanum-substituted strontium titanate
(La-SrTiO3) in which we control the oxygen stoichiometry in
order to break down the extended defect intergrowth regions
and create phaseswith considerable disordered oxygen defects.We
substitute Ti in these phases with Ga and Mn to induce redox
activity and allow more flexible coordination. The material
demonstrates impressive fuel cell performance using wet hydrogen
at 950 8C. It is also i
中断，延长的缺陷，固体氧化物燃料电池
细胞阳极氧化甲烷
点缺陷，主要是执政的电化学性质
氧化物：在低浓度的缺陷，电导率增加
浓度;然而，在高浓度，缺损的缺陷
互动开始dominate1 ， 2 。因此，在搜索电化学
活性物质为燃料电池阳极，高缺陷
浓度一般是可以避免的。在这里，我们描述一氧化氮
阳极所形成的镧取代钛酸锶
（洛杉矶-钛酸锶）在这方面，我们控制氧的化学计量在
为了打破延长缺损共生地区
创造phaseswith相当紊乱的氧defects.we
以钛在这些阶段与GA和锰诱导的氧化还原
活动，并允许更灵活的协调。材料
显示出令人印象深刻的燃料电池性能使用湿氢
在950 8C条。这亦是重要的燃料电池技术
实现高效运作，电极与不同的烃
fuels3 ， 4 ，尽管这种燃料的要求比纯
氢气。最好的负极材料，以日期镍的YSZ （ yttriastabilized
氧化锆） cermets5 -受到一些弊端有关
低耐受性sulphur6 ，碳积聚时，使用碳氢
fuels7 （虽然设备的修改和较低的温度
运作，可避免this8 ， 9 ）和数量不稳定，氧化还原
骑自行车。我们的负极材料是非常积极的为甲烷氧化
在高温下，开路电压，在超过为1.2V 。
该材料的设计概念，我们在这里使用可能会导致设备
使更有效的能源提取矿物燃料和
碳中性燃料。