外反射式微薄层现场显微红外光谱电化学池设计  

In-Situ Microdisk Thin-Layer Microscopic Fourier Transform Infrared Spectroelectrochemical Cell for Solid-state Electrolyte Systems

作　　者：林祥钦[1] 王新豫 

机构地区：[1]国家电化学和光谱研究中心电分析化学实验室

出　　处：《分析化学》1996年第4期489-493,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：本文报道一种能很好运用于固态分析中现场研究的外反射式微盘电极薄层显微红外光谱电化学地设计。该池使用100μm直径做钻盘工作电极，银盘参比电极和同心环形辅助电极。在PEG400／LICLO4体系中，地参数为：薄层厚0．6μm，表现薄层电阻14mΩ，充电电容4X×103pF，时间常数60ms，并测得常温下Fe（CN）63-/4-的表现扩散系数4×10－7cm2/s，获得了良好分辨Fe（CN）63-/4-氧化还原过程的现场红外光谱变化。An external reflection thin-layer microscopic FTIR spectroelectrochemical cell for solid-state electrolyte systems was designed and characterized in PEG400/LiClO4, This cell utilized a co-plane three-ele/trode system: a Pt disk working electrode of 100 μm diameter, a Ag disk reference electrode and a ring auxiliary electrode. The cell parameters were estimated in PEG400/LiClO4 (EO: Li = 16): 0. 6 μm thickness, 14 Mn apparent resistance, 4000pF double layer capacitance and 60ms time constant. The apparent diffusion constant of 4 ×10-7 cm2s-1 was estimated for Fe (CN)63-/4- at room temperature. Well resolved microspectra were obtained for the redox reaction of Fe(CN)63-/4-.

关 键 词：红外光谱 光谱电化学 铁氰化钾 MFTIRS薄层池 

分 类 号：O657.33[理学—分析化学] O614.811[理学—化学]