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用铁添加的SDC固体溶液作为低至中温固体氧化物燃料电池的电解质.

Lijie Zhang1, Yunan Jiang1,2, Kang Zhu1

  • 1CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China.

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概括

铁兴奋剂增强了固体氧化物燃料电池 (SOFC) 的萨马里亚兴奋剂 (SDC). 这种Fe-doped SDC电解质在低温下提高了可烧结性,导电性和单细胞性能.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 能源转换 能源转换

背景情况:

  • 撒玛利亚化 (SDC) 是低至中温固体氧化物燃料电池 (SOFC) 的有前途的电解质.
  • 提高SDC的可烧结性和离子导电性对于提高SOFC性能至关重要.
  • 铁 (Fe) 被探索为一种潜在的烧结辅助剂和剂,以修改SDC属性.

研究的目的:

  • 在SDC中调查铁兴奋剂的溶解度和影响.
  • 评估铁剂对SDC电解质的烧结特性,热膨胀和电导率的影响.
  • 为了评估Fe-doped SDC作为单个SOFC设备中的电解质的性能.

主要方法:

  • 用铁添加的SDC固体溶液的合成.
  • 材料性质的表征,包括可溶性,烧结行为,热膨胀和电导率.
  • 单个SOFC的制造和测试,使用合的SDC电解质.

主要成果:

  • 发现Fe在SDC中溶解,形成固体溶液,其溶解度取决于烧结温度.
  • 铁注显著改善了电解质特性,包括增强的烧结,修改的热膨胀和增加的电导率.
  • 电导率增加,而激活能量降低了Fe doping.
  • 用Fe-doped SDC电解质的单个电池在600°C时,峰值功率密度增加了52.8%,达到0.726W cm−2.
  • 在600°C和0.3 A cm−2下,经过150小时的稳定运行证明了这一点.

结论:

  • 合铁的SDC形成了一个有前途的固体溶液电解质,用于低至中温的SOFC.
  • 铁剂有效地增强了关键的电解质特性,并提高了SOFC的性能.
  • 经过证明的稳定运行突显了化SDC在实际SOFC应用中的潜力.