Li5VF4(SO4)2: A Prototype High-Voltage Li-Ion Cathode
Source abstract
Abstract
A Li-rich polyanionic compound based on V3+ with a previously unknown structure, Li5VF4(SO4)2, has been developed as a high-voltage cathode material for Li-ion batteries. The solvothermal preparation of this material, crystal structure solution, and initial electrochemical characterization are presented. An analysis based on density functional theory electronic structure calculations suggests that a high voltage close to 5 V is required to extract two Li ions and to reach the oxidation state of V5+. However, the use of conventional carbonate-based electrolytes, which exhibit increasing degradation above a potential of 4.3 V, does not permit the full capacity of this compound to be achieved at this time.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Transition Metal Oxide Nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Materials Department and Materials Research Laboratory, University of California, Santa Barbara, Santa Barbara, California 93106, United States
Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
BASF SE, 67056 Ludwigshafen, Germany
Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
Funding
BASF
References (56)
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