Li+ distribution into V2O5 films resulting from electrochemical intercalation reactions

被引：10

作者：

Decker, Franco ^{[1
]}

Donsanti, Frederique ^{[1
]}

Salvi, Anna Maria ^{[2
]}

Ibris, Neluta ^{[2
]}

Castle, James E. ^{[3
]}

Martin, Franz ^{[3
]}

Alamarguy, David ^{[3
]}

Vuk, Angela Surca ^{[4
]}

Orel, Boris ^{[4
]}

Lourenco, Airton ^{[5
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy

[2] Univ Basilicata, Dipartimento Chim, I-85100 Potenza, Italy

[3] Univ Surrey, Sch Engn, Guildford GU2 5XH, Surrey, England

[4] Natl Inst Chem, Ljubljana, Slovenia

[5] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2008年 / 19卷 / 04期

关键词：

electrochromism; V2O5; Li insertion; SIMS depth profile; ITO;

D O I：

10.1590/S0103-50532008000400009

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We studied interface effects of thin film V2O5 electrodes on top of indium tin oxide (ITO) glass for Li intercalation by means of a combination of methods: depth-profiling by secondary ion mass spectroscopy (SIMS), electrochemical insertion-extraction of lithium ions by slow-scan cyclic voltammetry (SSCV) and by potentiostatic intermittent titration technique (PITT). We show that the Li+ distribution inside the oxide film is always far from homogeneous, and that different diffusion paths (parallel to interfaces as well as perpendicular to them) have to be considered in experiments with electrodes having areas of few cm(2). The exposed edge formed when cutting out coupons from the coated glass plate supporting the V2O5 electrode plays a significant role in the process, because it exposes the V2O5-ITO interface to the electrolyte.

引用

页码：667 / 671

页数：5

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