Enhancing the electrochemical performance of high-voltage materials in Li-ion cells using additive-based electrolytes

Lithium-ion batteries (LIB) are essential for energy storage, providing high energy density, long cycle life, and low self-discharge rates. Increasing market demand requires improvements in LIB performance, particularly in cycling stability. This study investigates carbonate-based electrolytes with...

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Published inScientific Bulletin. Series C, Electrical Engineering and Computer Science no. 2; p. 365
Main Authors Ungureanu, Cosmin, Melinte, Adina, SpÎnu-Zăuleț, Adnana, Rizoiu, Alexandru, Fantini, Sébastien, Elkjæ r, Christian Fink, Buga, Mihaela, Necula, Horia
Format Journal Article
LanguageEnglish
Published Bucharest University Polytechnica of Bucharest 01.01.2025
Subjects
Additives
Electric cells
Electrochemical analysis
Electrolytes
Electrolytic cells
High voltages
Lithium-ion batteries
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ISSN2286-3540

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Summary:Lithium-ion batteries (LIB) are essential for energy storage, providing high energy density, long cycle life, and low self-discharge rates. Increasing market demand requires improvements in LIB performance, particularly in cycling stability. This study investigates carbonate-based electrolytes with additives to mitigate capacity fading due to LiPF6 decomposition. The high-voltage spinel material LNMO was evaluated in half-cell configurations against metallic lithium, utilizing carbonatebased electrolytes with different additives. The Lithium Nickel Manganese Oxide (LNMO) cathode demonstrated a specific capacity of 116 mAh/g at 3C and exceeding 115 mAh g-1 at 1C, with over 85% capacity retention after 120 cycles, highlighting its potential to enhance LIB technology.
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ISSN:2286-3540