Kim Y S, Balland V, Limoges B, Costentin C
Laboratoire d'Electrochimie Moléculaire, UMR 7591 CNRS, Université Paris Diderot, Sorbonne Paris Cité, 15 rue Jean-Antoine de Baïf, F-75205 Paris Cedex 13, France.
Phys Chem Chem Phys. 2017 Jul 21;19(27):17944-17951. doi: 10.1039/c7cp02810e. Epub 2017 Jun 30.
Cyclic voltammetry is a particularly useful tool for characterizing charge accumulation in conductive materials. A simple model is presented to evaluate proton transport effects on charge storage in conductive materials associated with a redox process coupled with proton insertion in the bulk material from an aqueous buffered solution, a situation frequently encountered in metal oxide materials. The interplay between proton transport inside and outside the materials is described using a formulation of the problem through introduction of dimensionless variables that allows defining the minimum number of parameters governing the cyclic voltammetry response with consideration of a simple description of the system geometry. This approach is illustrated by analysis of proton insertion in a mesoporous TiO film.
循环伏安法是表征导电材料中电荷积累的一种特别有用的工具。本文提出了一个简单模型，用于评估质子传输对导电材料中电荷存储的影响，该影响与氧化还原过程相关，且伴随着质子从水性缓冲溶液插入块状材料，这种情况在金属氧化物材料中经常遇到。通过引入无量纲变量来描述问题，从而描述材料内部和外部质子传输之间的相互作用，这允许在考虑系统几何形状的简单描述的情况下，定义控制循环伏安法响应的最少参数数量。通过对介孔TiO薄膜中质子插入的分析来说明这种方法。
