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用甘氨酸-硝酸盐燃烧法和溶液原位合成法分别制备了钙钛矿型氧化物La0.3Ca0.7Ni0.25Co0.75O3粉末及其吡咯相对质量分数为60%和80%的聚吡咯/钙钛矿复合微粒PPY/La0.3Ca0.7Ni0.25Co0.75O3。用X射线衍射(XRD)、红外光谱(FTIR)对材料进行了表征。并用循环伏安曲线对复合材料在1mol.L-1的KOH电解质溶液中的氧化还原行为进行了初步研究。结果表明,吡咯含量为80%的PPY/La0.3Ca0.7Ni0.25Co0.75O3的电化学性能最好,阴极峰电位最大,且阳极峰电位最小。
The perovskite-type oxide La0.3Ca0.7Ni0.25Co0.75O3 powder and polypyrrole / calcium titanate with pyrrole relative mass fraction of 60% and 80% were prepared by the method of glycine-nitrate combustion and in situ synthesis Mine composite particles PPY / La0.3Ca0.7Ni0.25Co0.75O3. The materials were characterized by X-ray diffraction (XRD) and infrared spectroscopy (FTIR). The redox behavior of the composites in 1mol.L-1 KOH electrolyte solution was investigated by cyclic voltammetry. The results showed that PPY / La0.3Ca0.7Ni0.25Co0.75O3 with the pyrrole content of 80% had the best electrochemical performance, the highest cathodic peak potential and the lowest anodic peak potential.