Electrochemical performance of LiMSnO 4 (M=Fe, In) phases with ramsdellite structure as anodes for lithium batteries
| Autor: | U.V. Varadaraju, M.V.V.M. Satya Kishore, B. Raveau |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
chemistry.chemical_classification
Valence (chemistry) Chemistry Intercalation (chemistry) Inorganic chemistry chemistry.chemical_element Deintercalation Galvanostatic discharges Lithium intercalation Solid state reactions Anodes Electric potential Intercalation compounds Lithium batteries Lithium compounds Solid state physics Synthesis (chemical) X ray diffraction analysis Electrochemistry indium iron complex lithium derivative article chemical reaction decomposition electric potential electrochemical analysis reaction analysis solid state synthesis temperature sensitivity Condensed Matter Physics Lithium battery Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography chemistry.chemical_compound X-ray crystallography Materials Chemistry Ceramics and Composites Lithium oxide Physical and Theoretical Chemistry Inorganic compound Indium |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | LiMSnO 4 (M=Fe, In) compounds were synthesized by high temperature solid-state reaction method and the electrochemical studies were carried out vs. lithium metal. Lithium is reversibly intercalated and deintercalated in LiFeSnO 4 with a constant capacity of ?90 mAh/g. In situ X-ray diffraction data show that ramsdellite structure is stable for lithium intercalation and deintercalation in LiFeSnO 4. Galvanostatic discharge/charge of LiFeSnO 4 in the voltage window 0.05-2.0 V shows a reversible capacity of ?100 mAh/g. The observed capacity in LiFeSnO 4 is due to the two processes involving alloying/dealloying of Li 4.4Sn and formation/decomposition of Li 2O. In contrast, the new isotypic oxide LiInSnO 4 does not exhibit any lithium intercalation due to the absence of mixed valence for indium. Its reversible capacity is strongly dependent on the voltage window. LiInSnO 4 exhibits severe capacity fading on cycling in the voltage window 0.05-2.0 V, but shows a stable capacity of ?90 mAh/g in the voltage range 0.75-2.0 V. In situ XRD patterns of Li xFeSnO 4 (1�x�2) at various Li contents during initial lithium intercalation and deintercalation. ? 2004 Elsevier Inc. All rights reserved. |
| Databáze: | OpenAIRE |
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