Li+ ions diffusion coefficient in V2O5:MoO3 Sol-Gel films

被引:14
作者
Cholant, C. M. [1 ]
Azevedo, C. F. [2 ]
Caldeira, I. [1 ]
Balboni, R. D. C. [1 ]
Moura, E. A. [3 ]
Westphal, T. M. [1 ]
Pawlicka, A. [4 ]
Berton, M. A. C. [5 ]
Gomez, J. A. [6 ]
Avellaneda, C. O. [1 ]
机构
[1] Univ Fed Pelotas, Ctr Desenvolvimento Tecnol, Rua Gomes Carneiro 1, BR-96010610 Pelotas, RS, Brazil
[2] Univ Fed Pelotas, Ctr Ciencias Quim Farmaceut & Alimentos CCQFA, Pelotas, RS, Brazil
[3] Univ Fed Parana UFPR, Dept Fis, Ctr Politecn, Curitiba, Parana, Brazil
[4] IQSC USP, Sao Carlos, SP, Brazil
[5] Inst SENAI Inovacao Eletroquim, Curitiba, Parana, Brazil
[6] Univ Fed Pelotas, Inst Fis & Matemat, Pelotas, RS, Brazil
关键词
Chemical diffusion coefficient; cyclic voltammetry; potentiostatic intermittent titration technique; V2O5:MoO3 thin film; THIN-FILMS; OPTICAL-PROPERTIES; LITHIUM DIFFUSION; CATHODE MATERIAL; INTERCALATION; OXIDES; MOO3; PERFORMANCE; BEHAVIOR; GROWTH;
D O I
10.1080/15421406.2017.1360712
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Present work shows results of Li+ ions insertion and extraction from vanadium pentoxide doped with 5 mol% of molybdenum trioxide (V2O5:MoO3) thin films. The characterizations were performed by cyclic voltammetry (CV), potentiostatic intermittent titration technique (PITT), and electrochemical impedance spectroscopy (EIS). The obtained results revealed Li+ diffusional behavior for anodic and cathodic processes, and it was found that Li+ diffusion coefficient (D) values obtained from CV, PITT, and EIS varied from 10(-10) to 10(-12) cm(2) s(-1). Finally, a diffusion of Li+ process was modeled by solving Fick equation with constant D in plane sheet geometry.
引用
收藏
页码:61 / 70
页数:10
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