The nano - sno2 electrode was used as bioelectrochemical sensor in chronoamperometry to count fastly e . coli with the advantages of quickness , simple operation and high sensitivity 實驗結(jié)果表明,用該電極為工作電極,采用計時電流法能簡便、快速、靈敏地對水體中的大腸桿菌進行計數(shù)。
In the first part of this paper , mn ( iii ) / mn ( ii ) couple in h2so4 was firstly applied as the positive couple to this system , i . e . redox flow cell . its chemical , electrochemical properties , redox kinetics and related parameters were characterized and discussed by rotating disc electrode ( rde ) , cyclic voltammetry ( cv ) , a . c . impedance ( a . c . imp ) , chronoamperometry , tafel curve , and galvanostatic charge / discharge techniques . conclusions have been drawn as follows : 1 . the electrochemical kinetics of mn ( iii ) / mn ( ii ) redox couple in 6 . 3m h2so4 solution were studied by means of rotating disc electrode ( rde ) technique on platinum electrode 本文第一部分首次成功地將酸性介質(zhì)中的mn ( iii ) / mn ( ii )電對應(yīng)用于氧化還原液流電池這一新型儲能裝置的正極活性材料,通過旋轉(zhuǎn)圓盤( rde ) 、循環(huán)伏安( cv ) 、交流阻抗( a . c . imp ) 、恒電位階躍、 tafel實驗以及mn ( iii ) / mn ( ii )單電極的恒流充放電實驗,我們得出以下結(jié)論: 1 .在旋轉(zhuǎn)圓盤電極上,不同轉(zhuǎn)速范圍,不同的極化過電位, mn ( ) / mn ( )體系氧化還原電極過程的控制步驟不同,電荷傳遞、擴散傳質(zhì)可分別或聯(lián)合成為控制步驟。
百科解釋
Chronoamperometry is an electrochemical technique in which the potential of the working electrode is stepped and the resulting current from faradic processes occurring at the electrode (caused by the potential step) is monitored as a function of time. Limited information about the identity of the electrolyzed species can be obtained from the ratio of the peak oxidation current versus the peak reduction current.