超级电容器用Ti/TiO2-MnO纳米管阵列电极的制备及电化学性能

doi:10.3724/SP.J.1077.2013.13106

无机材料学报 ›› 2013, Vol. 28 ›› Issue (11): 1228-1232.DOI: 10.3724/SP.J.1077.2013.13106

超级电容器用Ti/TiO₂-MnO纳米管阵列电极的制备及电化学性能

黄有国, 郑锋华, 任孟德, 李庆余, 王红强

(广西师范大学化学化工学院, 桂林 541004)

收稿日期:2013-03-01 修回日期:2013-04-25 出版日期:2013-11-20 网络出版日期:2013-10-18
作者简介:黄有国(1972-)，男，博士，副教授. E-mail:huangyg@mailbox.gxnu.edu.cn
基金资助:
国家自然科学基金(21063003,51064004); 广西自然科学基金(2011GXNSFA018016, 2012GXNSFAA053214, 2013GXNSFDA019027, 2013GXNSFAA019032); 广西科学研究与技术开发计划 (1099081-1, 1114019-3)

Preparation and Electrochemical Properties of Ti/TiO₂-MnO Nano Array Electrode for Supercapacitor

HUANG You-Guo, ZHENG Feng-Hua, REN Meng-De, LI Qing-Yu, WANG Hong-Qiang

(School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, China)

Received:2013-03-01 Revised:2013-04-25 Published:2013-11-20 Online:2013-10-18
About author:HUANG You-Guo. E-mail:huangyg@mailbox.gxnu.edu.cn
Supported by:
National Natural Science Foundation of China (21063003, 51064004); Natural Science Foundation of Guangxi Province of China (2011GXNSFA018016, 2012GXNSFAA053214, 2013GXNSFDA019027, 2013GXNSFAA019032); Science Research and Technology Development Program of Guangxi Province of China (1099081-1,1114019-3)

摘要/Abstract

摘要： 通过阳极氧化-浸渍-退火的方式获得Ti/TiO₂-MnO复合电极。通过XRD测定样品的晶相结构, 通过SEM观察样品的显微形貌。结果表明, Ti/TiO₂纳米管阵列孔径分布在60~95 nm, 纳米管长度在350~820 nm。常温下阳极氧化获得的TiO₂为无定形结构, 500℃热处理后, TiO₂变为锐钛矿(Anatase)。样品在MnSO₄溶液中浸渍并500℃热处理后, 只有MnO相产生。组装扣式模拟超级电容器并测试其循环伏安曲线。CV曲线存在一对氧化还原峰, 对应H⁺在纳米管中的嵌入/脱出过程。H⁺在纳米管中传输过程为扩散控制。TiO₂由无定形转变为Anatase晶形和在其中沉积MnO后, CV响应电流降低。

关键词: 阳极氧化, Ti/TiO₂-MnO纳米管阵列, 超级电容器, 电化学性能

Abstract: A Ti/TiO₂-MnO composite electrode was prepared by anodizing, chemical dipping and annealing. The crystalline structure and the microscopic morphology of the sample were characterized by XRD and SEM. The results show that the pore diameters of the Ti/TiO₂ nanotube arrays (NTAs) range from 60 nm to 95 nm, and their lengths range from 350 nm to 820 nm. Ti/TiO₂ nanotube array obtained through anodizing at ambient temperature is amorphous. However, it transforms from amorphous to anatase after annealing at 500℃. Only MnO is found after the sample is immersed in MnSO₄ solution. A button supercapacitor device is assembled and its cyclic voltammetry curves are determined. It shows that its cyclic voltammetry curves have a pair of redox peaks, which corresponds to the calation/intercalation process of H⁺in NTAs. The intercalation/calation process of H⁺ is controlled by diffusion. The CV response current of Ti/TiO₂-MnO electrode decreases as TiO₂ transforms from amorphous structure to anatase and MnO deposites in NTAs.

Key words: anodic oxidation, Ti/TiO₂-MnO nanotube array electrode, supercapacitor, electrochemical properties

中图分类号:

TQ152

黄有国, 郑锋华, 任孟德, 李庆余, 王红强. 超级电容器用Ti/TiO₂-MnO纳米管阵列电极的制备及电化学性能[J]. 无机材料学报, 2013, 28(11): 1228-1232.

HUANG You-Guo, ZHENG Feng-Hua, REN Meng-De, LI Qing-Yu, WANG Hong-Qiang. Preparation and Electrochemical Properties of Ti/TiO₂-MnO Nano Array Electrode for Supercapacitor[J]. Journal of Inorganic Materials, 2013, 28(11): 1228-1232.

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超级电容器用Ti/TiO₂-MnO纳米管阵列电极的制备及电化学性能

Preparation and Electrochemical Properties of Ti/TiO₂-MnO Nano Array Electrode for Supercapacitor

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