Fundamental understanding and practical challenges of anionic redox activity in Li-ion batteries

International audienceOur increasing dependence on lithium-ion batteries for energy storage applications calls for continual performance improvements of their positive electrodes, which have so far relied solely on cationic redox of transition-metal ions for driving the electrochemical reactions. Great hope has recently been placed on the emergence of anionic redox-a transformational approach for designing positive electrodes as it leads to a near-doubling of capacity-hence generating much researc