La1-xSrxCoO3钙钛矿在碱性溶液中的析氧电催化

催化学报 , 2000, 21(1): 23-26.

La1-xSrxCoO3钙钛矿在碱性溶液中的析氧电催化

王鹏 ^1, , 姚立广 ^2, , 王明贤 ^3, , 吴维(山文) ^4,

1.中国科学院金属研究所腐蚀与防护国家重点实验室,沈阳,110015

2.中国科学院金属研究所腐蚀与防护国家重点实验室,沈阳,110015

3.中国科学院金属研究所腐蚀与防护国家重点实验室,沈阳,110015

4.中国科学院金属研究所腐蚀与防护国家重点实验室,沈阳,110015

关键词：钙钛矿 , 析氧 , 电催化

Electrocatalysis of Oxygen Evolution on La1-xSrxCoO3 Perovskites in Alkaline Solution

通过酒石酸辅助法在较低温度下合成了La1-xSrxCoO3系列钙钛矿,研究了它们在KOH溶液中的阳极析氧动力学. 稳态极化研究结果表明, La1-xSrxCoO3电极的析氧Tafel斜率为2.303RT/F, OH-的反应级数近似为1, 在阳极析氧反应中, OH-的电化学脱附为速度控制步骤. 随着La1-xSrxCoO3中Sr含量的增加,氧化物表面的粗糙度提高,当x=0.2时,析氧反应的活化能最低,即La0.8Sr0.2CoO3表现有最高的析氧电催化活性.

参考文献

[1]	Boggio R;Carugati A;Trasatti S .[J].Journal of Applied Electrochemistry,1987,17(04):828.
[2]	Burke L D;McCarthy M M .[J].Journal of the Electrochemical Society,1988,135(05):1175.
[3]	Rasiyah P;Tseung A C C;Hibbert D B .[J].Journal of the Electrochemical Society,1982,129(08):1724.
[4]	Rasiyah P;Tseung A C C .[J].Journal of the Electrochemical Society,1983,130(12):2384.
[5]	Tiwari SK.;Singh RN.;Chartier P. .PREPARATION OF PEROVSKITE-TYPE OXIDES OF COBALT BY THE MALIC ACID AIDED PROCESS AND THEIR ELECTROCATALYTIC SURFACE PROPERTIES IN RELATION TO OXYGEN EVOLUTION[J].Journal of the Electrochemical Society,1995(1):148-153.
[6]	Matsumoto Y;Manabe H;Sato E .[J].Journal of the Electrochemical Society,1980,127(04):811.
[7]	Otagawa T;Bockris J O' M .[J].Journal of the Electrochemical Society,1982,129(10):2391.
[8]	Tiwari S K;Koenig J F;Poillerat G et al.[J].Journal of Applied Electrochemistry,1998,28(01):114.
[9]	Tseung A C C;Bevan H L .[J].Journal of Electroanalytical Chemistry and Interfacial Electrochemistry,1973,45(03):429.
[10]	Prigent M;Mas L J.[J].Communication Eur Communities (Rep) EUR,1978(6085):181.
[11]	Bernard M;Mas L J;Prigent M et al.[J].Communication Eur Communities (Rep) EUR,1980,6783:283.
[12]	Yeo R S;Orehotsky J;Visscher W et al.[J].Journal of the Electrochemical Society,1981,128(09):1900.
[13]	Levine S;Smith A L.[J].Discussions of the Faraday Society,1971(52):290.
[14]	Bockris J O' M;Otagawa T .[J].Journal of Physical Chemistry,1983,87(15):2960.
[15]	Gileadi E;Conway B E;Bockris J O' M;Conway B E.Modern Aspects of Electrochemistry[M].London: Butterworths,1964:347.
[16]	Damjanovic A;Bockris J O' M;Conway B E.Modern Aspects of Electrochemistry[M].New York: Plenum,1969:369.

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材料期刊网

La1-xSrxCoO3钙钛矿在碱性溶液中的析氧电催化

Electrocatalysis of Oxygen Evolution on La1-xSrxCoO3 Perovskites in Alkaline Solution

参考文献