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題 名 | Hydrophobic Effect of PTFE-Modified Ru矴Ti盁O[feaf]Electrodes on Oxygen Evolution in Alkaline Solution=PTFE修飾Ru矴Ti盁O[feaf]電極在鹼性溶液中氧氣析出之疏水性效應 |
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作 者 | 謝登存; 黃炳照; | 書刊名 | 中國工程學刊 |
卷 期 | 21:5 1998.09[民87.09] |
頁 次 | 頁521-533 |
分類號 | 460.02 |
關鍵詞 | 疏水性; 析氧; 釕鈦雙成份電極; 鐵弗龍; Hydrophobicity; Oxygen evolution; Ru-Ti binary electrodes; PTFE; |
語 文 | 英文(English) |
中文摘要 | 本文藉由接觸角、表面形態及電化學特性來研究PTFE修飾Ru �崎i�� O�� 電極在氧氣析出的疏水性效應。PTFE 修飾 Ru �� Ti �� O �笆q極的疏水性是由接觸角度計 來量測。電極的表面形態是由電子顯微鏡及原子力顯微鏡來觀察,電極 PTFE 含量在電化學 特性之效應則是由伏安電量、極化行為及交流阻抗來量測。結果顯示氧氣析出行為及電極的 效能明顯受到電極疏水性影響, 以含 21.1 vol%PTFE 塗膜液製備得之電極有最高的活性位 址數目及位址活性,其效能最好。電極在氧氣析出之效能的變化與活性位址的分散、表面形 態及氣泡在電極表面的行為有關。 |
英文摘要 | The hydrophobic effects of PTFE-modified RuTiO electrodes on oxygen evolution are explored in this study by investigating contact angle, morphology and electrochemical characteristics. The hydrophobicity of electrodes is measured by the contact angle of the PTFE-modified Ru �� Ti �� O �� electrodes. The morphologies of electrodes with various amounts of PTFE are observed by using a scanning electron microscope (SEM) and an atomic force microscope (AFM) . The effects of PTFE-content on the electrochemical characteristics of PTFE-modified electrodes are evaluated by the measurements of voltammetric charge, polarization and ac-impedance. The behavior of oxygen evolution and the performance of electrodes depende significantly cantly on the hydrophobicity of PTFE-modified electrodes. The electrode trode prepared from a dipping solution with 21.1 vol% PTFE have the best performance in terms of the largest number of active sites and the highest site activity. The variation in performance of electrodes for oxygen evolution with PTFE-content is related to the variation in active site dispersion, morphology and bubble behaviors of the electrode. |
本系統中英文摘要資訊取自各篇刊載內容。