Preparation and properties of MnO2-TiO2 nanotube array composite electrodes using titanium foam as the current collector
Preparation and properties of MnO2-TiO2 nanotube array composite electrodes using titanium foam as the current collector
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DOI：
10.1016/j.ijhydene.2018.03.138
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发表时间：
2018-05-03
影响因子：
7.2
通讯作者：
Zhao, Jianling
中科院分区：
文献类型：
--
作者：
Li, Zhongwei;Wang, Xixin;Zhao, Jianling
将MnO2沉积在泡沫钛阳极氧化得到的TiO2纳米管阵列上，制备了MnO2-TiO2纳米管阵列复合电极，并研究了TiO2纳米管阵列形貌对电极性能的影响。结果表明，纳米管的壁厚、管径和紧密度对复合电极的性能有影响。当电流密度为0.1 mA/cm(2)时，优化样品的面积、质量和体积电容值分别达到436.2 mF/cm(2)、1470.8 mF/g和5452.5 mF/cm(3)，显著高于采用平面钛箔作为集流剂的MnO2-TiO2纳米管阵列复合电极。循环3000次后电容保持率为85.7%。此外，还详细研究了测试电解质中阳离子（Li+、Na+、K+、NH4+）和阴离子（Cl-、Br-、I-、CH3COO(-)）对电容性能的影响。(C) 2018氢能源出版有限责任公司，由爱思唯尔有限公司出版。版权所有。
MnO2-TiO2 nanotube array composite electrodes were prepared through depositing MnO2 onto TiO2 nanotube arrays obtained by anodization of the titanium foam and the effect of morphologies of TiO2 nanotube arrays on the performance of the electrode was investigated. Results show that the wall thickness, the tube diameter and the tightness among the nanotubes affected the performance of composite electrodes. The areal, quality and volume capacitance value of the optimized sample reached up to 436.2 mF/cm(2), 1470.8 mF/g and 5452.5 mF/cm(3), respectively, at a current density of 0.1 mA/cm(2), which were significantly higher than those of the MnO2-TiO2 nanotube array composite electrodes using planar titanium foil as the current collector. The capacitance retention was 85.7% after 3000 cycles. In addition, the influences of the cations (Li+, Na+, K+, NH4+) and anions (Cl-, Br-, I-, CH3COO(-)) in the testing electrolytes on the capacitance properties were also studied in detail. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.