Publications by authors named "Carole Bourbon"
A complete solid solution of m-Li(Mn1-xCox)BO3 has been successfully synthesized for the first time with the idea of improving the average potential versus m-LiMnBO3. These compounds have been obtained by a multiple-step process. Interestingly, transmission electron microscopy results indicate that the C2/c space group previously reported for m-LiMBO3 (M = Mn, Co) cannot describe m-Li(Mn1-xCox)BO3 compounds.
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- 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.