# 循環伏安法

## 实验方法

### 三电极系统

#### 工作电极

（CME）的研究常使用循环伏安法。[2]CME在作为工作电极，循环伏安图是其重要的电极性质表征。以及使用循环伏安过程进行电极的修饰。

## 特性

${\displaystyle i_{p}=0.4463\ nFAC\left({\frac {nFvD}{RT}}\right)^{\frac {1}{2}}}$

${\displaystyle i_{p}=268,600\ n^{\frac {3}{2}}AD^{\frac {1}{2}}Cv^{\frac {1}{2}}}$

• ip = 峰电流(A)
• n = 氧化还原电对互变的电子转移数
• A = (平行板)电极的表面积(cm2)
• F = 法拉第常数(96,485 C/mol)
• D = 扩散系数(cm2/s)
• C = 高价态物种的初始浓度(mol/cm3)
• ν = 扫描速率(V/s)
• R = 气体常数R(J K−1 mol−1)
• T = 体系温度(K)
${\displaystyle i={\frac {nFAc_{j}^{0}{\sqrt {D_{j}}}}{\sqrt {\pi t}}}}$

• 还原峰电流与氧化峰电流近似相等；
• 25 °C下，还原峰电位与氧化峰电位之差的理论值${\displaystyle \Delta E_{p}=E_{pa}-E_{pc}={\frac {56.5{\text{ mV}}}{n}}}$[6]

## 参考资料

1. ^ 方惠群等. 仪器分析. 科学出版社. 2009. ISBN 978-7-03-009902-0.
2. ^ Murray, Royce W.; Andrew G. Ewing, and Richard A. Durst. Chemically modified electrodes molecular design for electroanalysis. Analytical Chemistry. 1987, 59 (5): 379A–390A.
3. ^ 陈国松; 陈昌云. 仪器分析实验. 南京大学出版社. 2009. ISBN 9787305055188.
4. ^ P. Zanello, "Inorganic Electrochemistry: Theory, Practice and Application" The Royal Society of Chemistry 2003. ISBN 0-85404-661-5
5. ^ Crouch, Stanley R and Skoog, Douglas A: "Principles of instrumental analysis" Cengage Learning 2006, ISBN 0-49501-201-7
6. ^ Nicholson, R. S.; Irving. Shain. Theory of Stationary Electrode Polarography. Single Scan and Cyclic Methods Applied to Reversible, Irreversible, and Kinetic Systems.. Analytical Chemistry. 1964-04-01, 36 (4): 706–723. doi:10.1021/ac60210a007.
7. ^ Wightman, R. Mark. Probing Cellular Chemistry in Biological Systems with Microelectrodes. Science. 2006, 311 (5767): 1570–1574. PMID 16543451. doi:10.1126/science.1120027.
8. ^ Nicholson, R.S. Theory and Application of Cyclic Voltammetry for Measurement of Electrode Reaction Kinetics. Anal. Chem. 1965, 37: 1351–1355. doi:10.1021/ac60230a016.
9. ^ Geiger, W. E., "Reflections on Future Directions in Organometallic Electrochemistry", Organometallics 2011, volume 30, pp. 28-31. doi:10.1021/om1010758
10. ^ DuVall, Stacy DuVall; McCreery,Richard. Control of Catechol and Hydroquinone Electron-Transfer Kinetics on Native and Modified Glassy Carbon Electrodes. Anal. Chem. 1999, 71: 4594–4602. doi:10.1021/ac990399d.