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电化学  2012 

同轴静电纺丝法制备TiN@MnO纤维及其电化学性能研究

, PP. 257-263

Keywords: 同轴静电纺丝法,芯-壳结构,电极材料

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Abstract:

本文以钛酸四丁酯和乙酰丙酮锰为起始原料,聚乙烯吡咯烷酮(PVP)为分散剂分别配制高分子溶液.采用同轴静电纺丝法制备了TiN@MnO前驱体,并经氨气处理得到了具有芯-壳结构的TiN@MnO同轴纤维.采用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、X射线能量色散谱(EDX)和物理吸附仪分析、观察和表征TiN@MnO同轴结构纤维,其比表面积达16m2?g-1.循环伏安曲线测试(CV)表明,在20mV?s-1倍率下,TiN@MnO同轴纤维电极比电容保持率为2mV?s-1倍率下的81%,充分说明TiN和MnO两种组分的协同效应提高了电极的倍率性能.

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