聚合物辅助燃烧法合成YBa1-xSrxCo2O5+δ纳米粉体被引量：1

Synthesis of YBa1-xSrxCo2O5+δ Nanopowder by a Polymer-Assisted Combustion Method

下载PDF

导出

摘要在碱性条件(pH=8~9)下,采用聚合物辅助燃烧法合成了YBa 1- x Sr x Co 2O 5+δ( x =0、0.5)四方相双钙钛矿结构纳米粉体,考察了焙烧温度和保温时间对粉体合成的影响;通过XRD和FSEM对纳米粉体的物相结构和微观形貌进行了表征,并测试了YBa 1- x Sr x Co 2O 5+δ阴极半电池在600~800 ℃空气条件下的电化学阻抗谱。结果表明,焙烧温度以 1 000 ℃为宜,保温时间对YBa 1- x Sr x Co 2O 5+δ纳米粉体的物相影响较大;YBa 1- x Sr x Co 2O 5+δ纳米粉体颗粒均匀,平均粒径约为100 nm;YBa 1- x Sr x Co 2O 5+δ阴极半电池具有良好的电催化活性,表明Sr替代部分Ba可以提高阴极材料的电化学性能。 We synthesized YBa 1- x Sr x Co 2O 5+δ( x =0,0.5) tetragonal double perovskite nanopowders by a polymer-assisted combustion method under alkaline conditions(pH=8-9),investigated the effects of calcination temperature and holding time on synthesis,and characterized their phase structure and micromorphology by XRD and FSEM,respectively.Moreover,we tested the electrochemical impedance spectroscopy(EIS) of YBa 1- x Sr x Co 2O 5+δ cathode half\|cell in air at 600-800 ℃.The results show that the calcination temperature of 1 000 ℃ is appropriate,and the holding time has a great influence on the synthesis of YBa 1- x Sr x Co 2O 5+δ nanopowders.The particles of the YBa 1- x Sr x Co 2O 5+δ nanopowders are uniform with the average particle size of about 100 nm.YBa 1- x Sr x Co 2O 5+δ cathode half\|cell has good electrocatalytic activity,which indicates that Sr partially replacing Ba can improve the electrochemical properties of cathode materials.

作者周丽红胡碧康喻云泰张凯祥王宇迪陈翔 ZHOU Lihong;HU Bikang;YU Yuntai;ZHANG Kaixiang;WANG Yudi;CHEN Xiang(City College,Wuhan University of Science and Technology,Wuhan 430083,China)

机构地区武汉科技大学城市学院

出处《化学与生物工程》 CAS 2019年第6期30-33,共4页 Chemistry & Bioengineering

基金湖北省教育厅科学研究项目(B2016436)

关键词固体氧化物燃料电池 YBa1-xSrxCo2O5+δ纳米粉体聚合物辅助燃烧法阴极 solid oxide fuel cell YBa1-xSrxCo2O5+δ nanopowder polymer-assisted combustion cathode

分类号 O611.4 [理学—无机化学] TQ174 [化学工程—陶瓷工业]

引文网络
相关文献

参考文献1

1陈静,刘丽娜,王方中,蒲健,池波,李箭.聚合物协助燃烧法合成La_(0.8)Sr_(0.2)Co_(0.5)Fe_(0.5)O_(3-δ)纳米粉体[J].材料科学与工艺,2011,19(1):71-75. 被引量：1

二级参考文献14

1MINH N Q. Solid oxide fuel cell technology-features and applications [ J ]. Solid State Ionies, 2004, 174 ( 1 - 4): 271-277.
2SINGHAL S C. Solid oxide fuel cells for stationary, mobile, and military applications [ J ]. Solid State Ionics, 2002, 152 - 153 : 405 -410.
3SINGHAL S C- Advances in solid oxide fuel cell technology[J]. Solid State lonics, 2000, 135(1 -4) : 305 "313.
4CHICK L A, PEDERSON L R, MAUPIN G D, et al. Glycine-nitrate combustion synthesis of oxide ceramic powders [J]. Materials Letters,' 1990, 10(1-2):6-12.
5GUO R S, WEI Q T, LI H L, et al. Synthesis and prop erties of La0.7TSr0. 3 MnO3 cathode by gel combustion [ J ]. Materials Letters, 2006, 60(2): 261 -265.
6NAIR S R, PUROHIT R D, TYAGI A K, et al. Lowtemperature sintering of La(Ca) CrO3 powder prepared through the combustion process [ J ]. Journal of the American Ceramic Society, 2008, 91 ( 1 ) : 88 -91.
7SCHAFER J, SIGMUND W, ROY S, et al. Low temperature synthesis of uhrafine Pb (Zr, Ti) O3 powder by sol-gel combustion [ J ]. Journal of Materials Research, 1997, 12(10): 2518-2521.
8ZHOU W, SHAO Z P, RAN R, et al. LSCF nanopowder from cellulose-glycine-nitrate process and its applica tion in intermediatetemperature solidoxide fuel cells [J]. Journal of,the American Ceramic Society, 2008, 91(4) : 1155 -1162.
9ELLIS A V, WILSON M A. Carbon exchange in hot alkaline degradation of glucose [ J ]. Journal of Organic Chemistry, 2002, 67 (24) : 8469 - 8474.
10SUCIU C, HOFFMANN A C, VIK A, et al. Effect of calcination conditions and precursor 'proportions on the properties of YSZ nanoparticles obtained by modified solgel route [ J ]. Chemical Engineering Journal, 2008, 138:608-615.