Oxyanions in perovskites: from superconductors to solid oxide fuel cells.
Oxyanions in perovskites: from superconductors to solid oxide fuel cells.
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DOI：
10.1039/c4dt03036b
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发表时间：
2015-06
影响因子：
4
通讯作者：
C. Hancock;J. M. Porras-Vázquez;P. Keenan;P. Slater
中科院分区：
文献类型：
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作者：
C. Hancock;J. M. Porras-Vázquez;P. Keenan;P. Slater
在这篇文章中，我们回顾了钙钛矿材料中的氧阴离子（碳酸盐，硼酸盐，硝酸盐，磷酸盐，硫酸盐，硅酸盐）掺杂的工作，从超导铜酸盐掺杂研究的早期工作开始，并延伸到最近的工作掺杂到钙钛矿型固体氧化物燃料电池材料。在该掺杂策略中，氧阴离子基团的中心原子占据钙钛矿B阳离子位点，其中相关的氧化物离子填充该位点周围可用的6个阴离子位点中的3个（碳酸根、硝酸根、硼酸根）或4个（磷酸根、硫酸根、硅酸根），尽管被置换以实现氧阴离子所需的几何形状。我们强调这种掺杂策略的潜力，以准备新的系统，稳定相，不能在环境压力条件下制备，并导致修改的电子和离子电导率。我们还强调需要在这一领域开展进一步的工作，特别是评估钙钛矿相的碳酸盐含量。
In this article we review work on oxyanion (carbonate, borate, nitrate, phosphate, sulphate, silicate) doping in perovskite materials beginning with early work on doping studies in superconducting cuprates, and extending to more recent work on doping into perovskite-type solid oxide fuel cell materials. In this doping strategy, the central atom of the oxyanion group occupies the perovskite B cation site, with the associated oxide ions filling 3 (carbonate, nitrate, borate) or 4 (phosphate, sulphate, silicate) of the available 6 anion sites around this site, albeit displaced so as to achieve the required geometry for the oxyanion. We highlight the potential of this doping strategy to prepare new systems, stabilize phases that cannot be prepared under ambient pressure conditions, and lead to modifications to the electronic and ionic conductivity. We also highlight the need for further work in this area, in particular to evaluate the carbonate content of perovskite phases in general.