Comparison of the growth process and electrochemical properties of polyaniline films prepared by pulse potentiostatic and potentiostatic method on titanium electrode
Comparison of the growth process and electrochemical properties of polyaniline films prepared by pulse potentiostatic and potentiostatic method on titanium electrode
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DOI：
10.1002/app.25770
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发表时间：
2007-04
影响因子：
3
通讯作者：
Hai-hui Zhou;J. Wen;Xiaohui Ning;C. Fu;J. H. Chen;Y. Kuang
中科院分区：
文献类型：
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作者：
Hai-hui Zhou;J. Wen;Xiaohui Ning;C. Fu;J. H. Chen;Y. Kuang
采用脉冲恒电位法（PPM）和恒电位法（PM）在含有0.3 mol L−1 苯胺和1 mol L−1 HNO3 的浴中在钛（Ti）电极上沉积聚苯胺（PANI）薄膜。记录苯胺聚合过程中的计时电流图，并在扫描电子显微镜下观察不同聚合时间制备的PANI薄膜的形貌。研究了PANI薄膜生长过程之间的差异。 PPM和PM制备的PANI薄膜的生长过程分为两个阶段。对于 PPM 和 PM，第一阶段对应于在 Ti 电极表面形成致密颗粒状 PANI 层。第二阶段对应于在致密粒状PANI膜表面上进一步生长PANI膜。然而，PPM和PM制备的PANI薄膜在此阶段表现出不同的形貌。此外，PPM和PM制备的PANI薄膜的电化学性能也存在明显差异。 © 2007 Wiley periodicals, Inc. J Appl Polym Sci 104: 458–463, 2007
Polyaniline (PANI) films were deposited on titanium (Ti) electrode in a bath containing 0.3 mol L−1 aniline and 1 mol L−1 HNO3 by pulse potentiostatic method (PPM) and potentiostatic method (PM). The chronoamperograms during aniline polymerization were recorded, and the morphologies of PANI films prepared with different polymerization periods were examined under scanning electron microscope. The difference between the processes of PANI films growth was studied. The growth processes of PANI films prepared by PPM and PM are divided into two stages. For both PPM and PM, the first stage corresponds to the formation of a compact granular PANI layer on the surface of Ti electrode. The second stage corresponds to further growth of PANI film on the surface of the compact granular PANI film. However, the PANI films prepared by PPM and PM show different morphologies in this stage. In addition, the electrochemical properties of the PANI films prepared by PPM and PM are obviously different. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 458–463, 2007