Publications by authors named "Sebastien Patoux"
Article Synopsis
- Lithium-rich manganese-based layered oxides (Li[Li(x)Mn(y)TM(1-x-y)]O2) are promising cathode materials for lithium-ion batteries due to their high rechargeable capacity and energy density.
- However, during usage, these materials experience complex structural and chemical changes that can impact their performance, which need to be better understood.
- This study utilizes advanced transmission electron microscopy to observe these changes, revealing nickel and manganese segregation at the surface and proposing a mechanism that links these evolutions to a decrease in electrochemical performance during cycling.
The lithium/sulfur battery is a promising electrochemical system that has a high theoretical capacity of 1675 mAh g(-1), but its discharge mechanism is well-known to be a complex multistep process. As the active material dissolves during cycling, this discharge mechanism was investigated through the electrolyte characterization. Using high-performance liquid chromatography, UV-visible absorption, and electron spin resonance spectroscopies, we investigated the electrolyte composition at different discharge potentials in a TEGDME-based electrolyte.
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