IDENTIFICATION OF SURFACE-FILMS FORMED ON ACTIVE METALS AND NONACTIVE METAL-ELECTRODES AT LOW POTENTIALS IN METHYL FORMATE SOLUTIONS

被引：27

作者：

ELY, YE ^{[1
]}

AURBACH, D ^{[1
]}

机构：

[1] BAR ILAN UNIV,DEPT CHEM,IL-52100 RAMAT GAN,ISRAEL

来源：

LANGMUIR | 1992年 / 8卷 / 07期

关键词：

D O I：

10.1021/la00043a026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrochemical behavior of methyl formate (MF) and MF/CO2/Li salt solutions with active metals (lithium, calcium) and nonactive metals (nickel, gold) was investigated. The salts included calcium, lithium, and tetrabutylammonium perchlorates and tetrafluoroborates, and LiAsF6. Surface-sensitive Fourier transform infrared (FTIR) spectroscopy and X-ray microanalysis were used in order to characterize the various electrode surfaces,in addition to cyclic voltammetry. It was found that the metal formates (HCOOLi or (HCOO)2Ca) are the major surface species formed both on the active and on the nonactive electrodes at potentials below 1.5 V (Li/Li+) and that they passivate them. When CO2 and Li salt are present in MF solutions, as formed on both active and nonactive electrodes at low potentials contain both lithium formate and lithium carbonate.

引用

页码：1845 / 1850

页数：6

共 16 条

[1] THE ELECTROCHEMISTRY OF NOBLE-METAL ELECTRODES IN APROTIC ORGANIC-SOLVENTS CONTAINING LITHIUM-SALTS [J].