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升温速率对LSCF相纯度的影响
  • ISSN号：1002-087X
  • 期刊名称：《电源技术》
  • 时间：0
  • 分类：TM911.4[电气工程—电力电子与电力传动]
  • 作者机构：[1]武汉科技大学化学工程与技术学院,湖北武汉430081, [2]几江学院化学化工学院,汀西九江332005, [3]中国科学院过程工程研究所多相反应实验室,北京100080
  • 相关基金：自然科学重点基金项目（50730002）
作者： 范宝安[1], 刘祥丽, 朱庆山[3]
关键词： 升温速率, 钙钛矿, LSCF, SOFC, heating rate, perovskite, LSCF, SOFC
中文摘要：

LSCF（La1-xSrxCo1-yFeyO3-δ）作为一种离子-电子混合导体，具有良好的催化活性，较低的极化阻力和低廉的材料成本，这使其成为中温固体氧化物燃料电池（IT-SOFC）中比较常用的阴极材料，其中以组成为La0.6Sr0.4Co0.2Fe0.8O3-δ（LSCF-6428）的LSCF最为常见。采用络合燃烧法，以柠檬酸作为络合剂和燃料，在700℃下成功制备出了LSCF-6428阴极粉体，通过提高前驱体煅烧过程中的升温速率，使得合成出来的粉体具有纯立方钙钛矿结构，避免了Sr2FeO4杂相的生成。

英文摘要：

As one of mixed electronic-ionic conductors, LSCF （La1-xSrxCo1-yFeyO3-δ）） has been widely used as cathode material of IT-SOFC （intermediate temperature solid oxide fuel cell） for its outstanding catalytic activity, lower polarization resistance and low raw material cost, especially for the composition of La0.6Sr0.4Co0.2Fe0.8O3-δ（LSCF-6428）. LSCF-6428 power was prepared at 700 ℃ by a route of chelating-combustion where citric acid was used as chelating agent and fuel. By virtue of increasing heating rate of LSCF precursor calcination, the LSCF-6428 with pure cubic perovskite phase was successfully synthesized as well as without any impurity phases, such as Sr2FeO4.

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期刊信息
  • 《电源技术》
  • 中国科技核心期刊
  • 主管单位:中国电子科技集团公司
  • 主办单位:中国电子科技集团公司第十八研究所
  • 主编：黄永才
  • 地址：天津市西青海泰华科七路6号
  • 邮编：300384
  • 邮箱：cjps@tips.ac.cn
  • 电话：022-23959362
  • 国际标准刊号：ISSN：1002-087X
  • 国内统一刊号：ISSN：12-1126/TM
  • 邮发代号:6-28
  • 获奖情况:
  • 国家期刊提名奖,国家“双效”期刊,连续四届天津市优秀期刊
  • 国内外数据库收录:
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  • 被引量:11796