Abstract: A lithium-containing compound has the following parent formula: LiNaMg2Cl6 or LiNaMg3Cl8. In an embodiment, a lithium solid-state battery includes a cathode active material layer, an anode active material layer, and a solid electrolyte layer between the cathode active material layer and the anode active material layer, wherein the solid electrolyte layer includes the aforementioned lithium-containing compound. In an embodiment, the battery includes the aforementioned lithium-containing compound as a catholyte or as a coating for a cathode active material. In an embodiment, the anode active material layer is an alloy anode and the battery includes the aforementioned lithium-containing compound as an anolyte.

Abstract: A compound for use in a lithium, manganese-rich cathode for a Li-ion battery is Li1.2Ni0.2Mn0.6O2 triple doped with Na+, Co3+, and Mg2+. A lithium, manganese-rich cathode for an Li-ion battery includes the aforementioned compound. A lithium-ion battery includes an anode, a cathode, and an electrolyte, wherein the cathode is the aforementioned lithium, manganese-rich cathode.

Abstract: A compound for use in a lithium, manganese-rich cathode for a Li-ion battery is Li1.2Ni0.2Mn0.6O2 triple doped with Na+, Co3+, and Mg2+. A lithium, manganese-rich cathode for an Li-ion battery includes the aforementioned compound. A lithium-ion battery includes an anode, a cathode, and an electrolyte, wherein the cathode is the aforementioned lithium, manganese-rich cathode.

Abstract: A compound for use in a lithium, manganese-rich cathode for a Li-ion battery is doped Li1.2Ni0.2Mn0.6O2 including Li1.2Ni0.2Mn0.6O2 doped with Na+, Li1.2Ni0.2Mn0.6O2 doped with Co3+, or Li1.2Ni0.2Mn0.6O2 dual doped with Na+ and Co3+. A lithium, manganese-rich cathode for an Li-ion battery includes the aforementioned compound. A lithium-ion battery includes an anode, a cathode, and an electrolyte, wherein the cathode is the aforementioned lithium, manganese-rich cathode.

Abstract: Compounds for use in cathodes for Li-ion batteries include Li2Mn0.88A0.06B0.06O3, wherein A and B are dopants in one of the following combinations: A=Sr, B?Cr; A=Be, B?Cr; A=Ca, B?Cr; A=Zn, B?Cr; A=Co, B?Cr; A=Co, B?V; A=Fe, B?As; A=Y, B?Sb; A=Rh, B?V; A=Cr, B?V; A=Cr, B?Ta; or A=B?Ce. A high-throughput computational doping procedure for Li2Mn0.88A0.06B0.06O3 compounds includes satisfying the following screening criteria: (i) M/O PDOS ratio (where M involves all cation species other than Li) is larger than in pristine Li2MnO3; (ii) calculated voltage for Li extraction is close to or even higher than in pristine Li2MnO3; (iii) doped compound is thermodynamically stable, with Ehull equal or close to 0 eV/atom; (iv) dopants A and B dissolve more favorably in the Li2MnO3 phase over the LiMO2 phase, such that ?E=Ehull(Li2MnO3)?Ehull(LiMO2)<0.

Abstract: An iron-air battery including an iron electrode in contact with an anode current collector, wherein the iron electrode includes a plurality of channels; an oxygen reduction reaction electrode having a first surface facing the plurality of channels and an opposing second surface in contact with air; an oxygen evolution reaction electrode interdigitated with the plurality of channels of the iron electrode, wherein at least a portion of the oxygen evolution reaction electrode is disposed within the plurality of channels in a direction perpendicular to a plane of the oxygen reduction reaction electrode; and an electrolyte in contact with the iron electrode, the first surface of the oxygen reduction reaction electrode, the plurality of channels, and the oxygen evolution reaction electrode.

Abstract: Iron electrode materials, iron electrodes, and methods for fabricating said iron electrode materials and iron electrodes via elevated temperature thermomechanical processing of porous particulate iron materials are described. For example, as part of iron electrode manufacture, a particulate iron material into an apparatus may be provided. In addition, pressure and/or heat may be applied to the particulate iron material in the apparatus for a time period to form an electrode having therein conductive connections between particles of the particulate iron material.