Abstract: A method including compressively rolling a first foil and a second foil together such that lithium in the second foil reacts with aluminum in the first foil, and converting aluminum or aluminum alloy in a first phase of the first foil to a lithium-aluminum alloy to form a prelithiated anode material, wherein the first foil comprises a first phase having aluminum or an aluminum alloy, wherein between 50-99 at % of a composite foil of the first foil and the second foil comprises the first phase, and a second phase interspersed with the first phase, the second phase has a conductive element, wherein between 1-50 at % of the composite foil comprises the second phase, and the second foil has lithium.

Abstract: The present disclosure provides a multiphase foil anode for a solid-state battery, comprising a foil with aluminum as a majority phase and secondary phases dispersed within the aluminum majority phase, wherein the secondary phases comprise at least two different elements selected from indium, lead, bismuth, tin, gallium, zinc, lithium, and silicon. The multiphase foil anode exhibits enhanced lithium storage capacity and cycling performance in solid-state battery applications.

Abstract: Described herein are solid-state electrochemical cells incorporating a solid-state electrolyte and aluminum as an anode active material. The use of aluminum as an anode active material can drive an increase in energy density and specific energy as compared to cells using conventional lithium-ion anode materials (e.g., graphite). Pairing an aluminum anode with a solid-state electrolyte can further provide for improved safety in secondary cells as compared to cells using lithium metal anodes for less complex manufacturing compared to cells using liquid electrolytes or wet processed anode materials.

Abstract: Described are composites having at least one layer, the at least one layer including an alloy of Al and at least another component or at least one layer including a first and second pluralities of particles. The first plurality of particles may be selected from at least one of Al particles and Al alloy particles. The second plurality of particles may be selected from at least one of metal particles and non-metal particles, wherein the metal particles are selected from at least one of zinc, silicon, bismuth, copper, germanium, indium, antimony, tin, magnesium, or combinations thereof, and the non-metal particles are selected from at least one of carbon, lithium titanium oxide, titania, MoO, MoS2, Co2O4, MnO2, Fe2O3, Fc3O4, FeS, CuO, or combinations thereof. The composites may be used as both current collectors and active material.