Spinel Anodes for Lithium‐Ion Batteries

Anodes of , , and with a spinel‐type structure have been evaluated in room‐temperature lithium cells. The cathodes that were selected for this study were the stabilized spinels, and , and layered . The electrochemical data demonstrated that Li + ions will shuttle between two transition‐metal host structures (anode and cathode) at a reasonably high voltage with a concomitant change in the oxidation state of the transition metal cations so that the Li + ions do not reduce to the metallic state at the anode during charge. These cells reduce the safety hazards associated with cells containing metallic‐lithium, lithium‐alloy, and lithium‐carbon anodes.