Abstract
A method is described for the low‐temperature preparation of amorphous vanadates of general formula (R = In, Cr, Fe, Al, Y), and their electrochemical properties vs. Li are reported. A dissolution‐reprecipitation process from a mixed solution of and was used to prepare these compounds. By appropriate annealing of the amorphous precursors, several crystallized vanadates were obtained as well. Among all of these vanadates, either amorphous or crystallized, only those with R = In and Fe are of potential interest as negative electrodes in lithium‐ion rechargeable batteries since they display reversible capacities as large as 900 mAh/g. This different electrochemical behavior depending on the nature of the metallic element implies that R is not just a spectator with respect to the Li uptake into these materials. From both electrochemical and in situ x‐ray diffraction data, a mechanism of Li uptake/removal different from the usual Li insertion/deinsertion process is proposed.
Keywords
Amorphous solidElectrochemistryDissolutionLithium (medication)Annealing (glass)ChemistryDiffractionElectrodeInorganic chemistryMaterials scienceCrystallographyPhysical chemistryMetallurgy
Affiliated Institutions
Related Publications
All-Solid-State Lithium Battery with LiCo[sub 0.3]Ni[sub 0.7]O[sub 2] Fine Powder as Cathode Materials with an Amorphous Sulfide Electrolyte
An all-solid-state battery was fabricated with fine powder as cathode materials. The fine powder was synthesized with oxalate decomposition methods and the average particle size...
The Room Temperature Ionic Liquid 1‐Ethyl‐3‐methylimidazolium Tetrafluoroborate: Electrochemical Couples and Physical Properties
The room temperature ionic liquid 1‐ethyl‐3‐methylimidazolium tetrafluoroborate was demonstrated as a versatile electrolyte by examining three representative electrochemical cou...
Oxidative Electrolyte Solvent Degradation in Lithium‐Ion Batteries: An In Situ Differential Electrochemical Mass Spectrometry Investigation
Differential electrochemical mass spectrometry (DEMS) was used to study the electrochemical decomposition of organic carbonate electrolyte solutions at practical lithium metal o...
<i>Ab initio</i>molecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium
We present ab initio quantum-mechanical molecular-dynamics simulations of the liquid-metal--amorphous-semiconductor transition in Ge. Our simulations are based on (a) finite-tem...
30 Years of Lithium‐Ion Batteries
Abstract Over the past 30 years, significant commercial and academic progress has been made on Li‐based battery technologies. From the early Li‐metal anode iterations to the cur...
Publication Info
- Year
- 1997
- Type
- article
- Volume
- 144
- Issue
- 12
- Pages
- 4099-4109
- Citations
- 190
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
190
OpenAlex
Cite This
S. Denis,
Emmanuel Baudrin,
M. Touboul
et al.
(1997).
Synthesis and Electrochemical Properties of Amorphous Vanadates of General Formula RVO 4 (R = In, Cr, Fe, Al, Y) vs. Li.
Journal of The Electrochemical Society
, 144
(12)
, 4099-4109.
https://doi.org/10.1149/1.1838150
Identifiers
- DOI
- 10.1149/1.1838150