High performance batteries based on hybrid magnesium and lithium chemistry

Abstract

This work studied hybrid batteries assembled with a Mg metal anode, a Li⁺ ion intercalation cathode and a dual-salt electrolyte containing Mg²⁺ and Li⁺ ions. We show that such hybrid batteries were able to combine the advantages of Li and Mg electrochemistry. They delivered outstanding rate performance (83% capacity retention at 15 C) with superior safety and stability (∼5% fade for 3000 cycles).