Current societal challenges in terms of energy storage have prompted to an intensification in the research aiming at unravelling new high energy density battery technologies with the potential of having disruptive effects in the world transition towards a less carbon dependent energy economy through transport electrification and renewable energy integration. Aside from controversial debates on lithium supply, the development of new sustainable battery chemistries based on abundant elements is appealing, especially for large scale stationary applications. Interesting alternatives are to use sodium, magnesium or calcium instead of lithium.
While for the Na-ion case fast progresses are expected as a result of chemical similarities with lithium and the cumulated Li-ion battery know how over the years, for Ca and Mg the situation is radically different. On one hand, the possibility to use Ca or Mg metal anodes which would bring a breakthrough in terms of energy density, on the other, development of suitable electrolytes and cathodes with efficient multivalent ion diffusion are bottlenecks to overcome.
The presentation will serve to discuss such promises and challenges and describe current state-of-the-art of research in the field.
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