• 作者： Hwang, B.J.; Shieh, D.T.; Chiang, A.S.T.
• 中文摘要： 本文主要以循環伏安及交流阻抗來探討溶膠-凝膠法及傳統方法製備所得之釕-鈦二成分氧化物電極之析氧及氯電化學活性。亦以電子顯微鏡及X-ray繞射儀來觀察二成分電極之表面形態及結晶結構。q/sup */之結果顯示無論析氧或析氯以溶膠-凝膠法製備所得之釕-鈦二成分電極之電化學活性面積比傳統製備方法所得之電極大。R/sub ct/之結果顯示無論析氧或析氯以溶膠-凝膠法製備所得之電極之電化學活性比傳統製備方法所得之電極好。q/sup */R/ sub ct/之倒數可視為電極外觀活性基活性。溶膠-凝膠法所得之電極之外觀活性基活性稍小於電極傳統方法所得之電極。雖然電極表面裂縫大小之分布與製備方法無關,以溶膠-凝膠法所得電極之裂縫面積及真實面積大於傳統方法所得之電極。
• 英文摘要： The electrochemical activities of Ru-Ti binary-oxide electrodes synthesized by sol-gel and traditional methods were compared with each other (using cyclic voltammetry and AC impedance techniques) so as to examine their ability to evolve chlorine and oxygen in 1M NaCl and 1M H/sub 2/ SO/sub 4/ solutions, respectively. The morphologies and structures of binary-oxide electrodes were also investigated by scanning electron microscopy (SEM) and X- ray diffraction (XRD). The results of q/sup */ indicated that the electrochemically active surface area or the number of active sites of Ru-Ti binary-oxide electrodes synthesized by the sol-gel method was larger than that obtained by the traditional methods for both chlorine and oxygen evolution. The results of R/sub ct/ also demonstrated that the electrochemical activity of Ru-Ti binary-oxide electrodes synthesized by the sol-gel method was better than that obtained by the traditional methods for both chlorine and oxygen evolution. The inverse of q/sup */ R/sub ct/ was taken as an apparent site activity of the electrode surface. The apparent site activity of electrodes synthesized by the sol-gel method was found to be slightly smaller than that by the traditional method. Although the distribution of the crack size of the electrode surface depended insignificantly on the methods of preparation, the crevice area or real surface area of electrodes synthesized by the sol-gel method was found to be larger than that obtained by the traditional method.
• 中文關鍵字： 氯; 氧; 形態; 結構; 電化學活性; 二元氧化物電極; 溶膠凝膠法
• 英文關鍵字： Chlorine; Oxygen; Morphology; Structure; Electrochemical Activity; Binary-Oxide Electrode; Sol-Gel Method