Cyclic voltammetry and galvanostatic cycling characteristics of LiNiVO4 thin films during lithium insertion and re/de-insertion
| Autor: | Brigitte Pecquenard, M. V. Reddy, Philippe Vinatier, Alain Levasseur |
|---|---|
| Přispěvatelé: | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB) |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Cyclic voltammetry
Analytical chemistry Li-ion batteries chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences 7. Clean energy law.invention lcsh:Chemistry chemistry.chemical_compound law Li-insertion/de-insertion Crystallization Thin film Horizontal scan rate [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry lcsh:Industrial electrochemistry lcsh:QD1-999 Electrochemical properties Electrode kinetics Lithium Lithium oxide 0210 nano-technology Microelectrodes lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 9, Iss 3, Pp 409-415 (2007) Electrochemistry Communications Electrochemistry Communications, Elsevier, 2007, 9 (3), pp.409-415. ⟨10.1016/j.elecom.2006.10.011⟩ |
| ISSN: | 1388-2481 |
| DOI: | 10.1016/j.elecom.2006.10.011⟩ |
| Popis: | In this communication, we investigated the effects of LiNiVO4 thin film electrodes composition, thickness, electrolytes, cycling temperature, crystallization of films, and substrates on the kinetics during lithium insertion/de-insertion behaviour, which were studied in detail by cyclic voltammetry. The stoichiometric and non-stoichiometric thin films were formed by using rf-sputtering by varying the partial pressure of oxygen, and the host films were characterized by a variety of methods like Nuclear techniques and surface science analytical methods. The galvanostatic studies give the lithium insertion amounts and the best electrochemical performance of 1300 mAh/g capacity has been obtained from the stoichiometric film deposited on a stainless steel substrate during the first discharge cycle. The lithium diffusion coefficients of the film during the first discharge–charge cycle were measured by using galvanostatic intermediate titration method. Overall, the voltammetric behaviours of LiNiVO4 thin film electrodes are highly sensitive to the composition, thickness, cycling temperature, scan rate, substrates and crystal structure, and the above observed behaviours are discussed. Keywords: Microelectrodes, Li-ion batteries, Electrochemical properties, Electrode kinetics, Cyclic voltammetry, Li-insertion/de-insertion |
| Databáze: | OpenAIRE |
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