Abstract: A cathode active material including a compound represented by Formula 1 and having an olivine structure: Li1??CO1?x?yInxMyPO4??Formula 1 wherein in Formula 1, 0??<1, 0.01?x?0.1, and 0.01?y?0.1, and M in Formula 1 is a divalent element, a trivalent element other than In, a tetravalent element, a pentavalent element, or a combination thereof.

Abstract: Rechargeable lithium-ion cells and implantable medical devices including the same are provided herein with niobium-based negative electrodes and high voltage positive electrodes. Electrode active materials are provided herein, including pseudoternary compositions within a Ti—Nb—W—O pseudoternary system and/or including titanium, niobium, oxygen, and an elemental dopant. Rechargeable lithium-ion cells provided herein with niobium-based negative electrodes afford improved energy density, and, more particularly, provide improved energy density at operating voltages for use in implantable medical devices.

Abstract: A solid electrolyte, a method of preparing the same, and a secondary battery including the same, wherein the solid electrolyte comprises a metal oxide including lithium, silicon, and boron, and a metal comprising at least one of iron, chromium, lanthanum, or thallium, and the solid electrolyte has a glass structure containing 60 mol % or greater of lithium based on 100 mol % of the total amount of the metal and lithium, silicon, and boron, and wherein the solid electrolyte has a softness of 152 1/BHN or greater, wherein 1/BHN is an inverse of a Brinell hardness number as measured in accordance with ISO 6506.

Abstract: A cathode active material including a compound represented by Formula 1 and having an olivine structure: wherein in Formula 1, 0??<1, 0.01?x?0.1, and 0.01?y?0.1, and M in Formula 1 is a divalent element, a trivalent element other than In, a tetravalent element, a pentavalent element, or a combination thereof.