Today's rechargeable Li-ion batteries, whose principle goes back to the 1980's, operate via an electrochemical process entailing intercalation reactions that necessitate the use of electrode materials having very specific structures and properties, thus considerably limiting their number. Through the discoveries of new Li electrochemical-driven reactivity mechanism involving either conversion or displacement reactions, we are showing herein that, in the quest for new electrode materials, we no longer need materials with open structures or good electronic and ionic conductivity, thus opening a new era for Li-ion research. A review of such new reaction schemes is presented, and their potential impact on applications discussed.
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