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首页> 外文期刊>Materials Chemistry and Physics. >Polymer hydrogel assisted combustion synthesis of highly crystalline ceramic nanoparticles for SOFC electrolyte films
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Polymer hydrogel assisted combustion synthesis of highly crystalline ceramic nanoparticles for SOFC electrolyte films

机译：聚合物水凝胶辅助燃烧合成SOFC电解质膜用高结晶度陶瓷纳米粒子

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摘要

Highly crystalline Ce_(0.8)Sm_(0.2)O_(1.9) (SDC) nanoparticles were synthesized via a polyacrylamide hydrogel assisted combustion process involving microwave-induced gelation and combustion. Crosslinked poly-acryamide was used as fuel, and uniform dispersion of ceramic precursors in the porous polyacrylamide hydrogel led to mild combustion and limited agglomeration of ceramic particles. The combustion method developed here prolonged combustion process, and allowed ceramic particles to further crystallization. As-synthesized powders were calcined to increase particles size, for the purposed of reducing sintering shrinkage in the densification of electrolyte film. The reactive SDC powders with particle sizes of 0.1 -1 μm were made into dense solid oxide fuel cell (SOFC) electrolyte film by dip-coating. The cell with a 6 μm thick SDC film achieved high maximum power densities of 353 and 533 mWcrrr2 at 550 and 600 ℃, respectively.
机译：通过聚丙烯酰胺水凝胶辅助燃烧过程（包括微波诱导的凝胶化和燃烧）合成了高结晶度的Ce_（0.8）Sm_（0.2）O_（1.9）（SDC）纳米粒子。交联的聚丙烯酰胺用作燃料，并且陶瓷前体在多孔聚丙烯酰胺水凝胶中的均匀分散导致燃烧适度，并限制了陶瓷颗粒的团聚。这里开发的燃烧方法延长了燃烧过程，并使陶瓷颗粒进一步结晶。煅烧合成后的粉末以增加粒径，以减少电解质膜致密化中的烧结收缩。通过浸涂将粒径为0.1 -1μm的反应性SDC粉末制成致密的固体氧化物燃料电池（SOFC）电解质膜。具有6μm厚SDC膜的电池在550和600℃时分别具有353和533 mWcrrr2的最大最大功率密度。

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  • 来源
    《Materials Chemistry and Physics.》 |2009年第1期|148-152|共5页
  • 作者

    Dehua Dong; Zhanli Chai; Chun-Zhu Li; Huanting Wang;

  • 作者单位

    Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia;

    Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia;

    Center for Advanced Energy Science and Engineering, Department of Chemical Engineering, Curtin University ofTechnology, Perth, WA 6845, Australia;

    Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ceramics; thin films; chemical synthesis; sintering;

    机译：陶瓷;薄膜;化学合成烧结;

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