Abstract: A positive electrode active material, a method of making the same, and a lithium-ion secondary battery including the same are disclosed herein. A lithium-ion secondary battery including the positive electrode active material can have excellent cycle characteristics at high temperature. In some embodiments, a positive electrode active material a lithium transition metal oxide, and an iodine-containing material at least partially covering the lithium transition metal oxide, where the iodine-containing material contains iodine having an oxidation number of +3 to +7.

Abstract: An aqueous slurry for a positive electrode includes an aqueous binder to impart the outstanding lithium ionic conductivity, adhesive property and chemical stability to a positive electrode. The aqueous slurry for a positive electrode has a binder composition for a positive electrode including a polyvinylidene fluoride (PVDF)-based polymer and a water-soluble polymer comprising carboxymethyl cellulose (CMC), and positive electrode active material particles dispersed in an aqueous solvent.

Abstract: Provided is the positive electrode active material for a potassium ion battery according to the embodiment comprises a compound represented by Formula (1), in which M represents at least one element selected from the group consisting of V, Fe, Co, Ni, and Mn, and x represents a number from 0 to 1; and is a positive electrode for a potassium ion battery comprising the positive electrode active material for a potassium ion battery according to the embodiment, or a potassium ion battery comprising the positive electrode for a potassium ion battery. KMOxPO4F1-x??[Formula (1)].

Abstract: Provided is the positive electrode active material for a potassium ion battery according to the embodiment comprises a compound represented by Formula (1), in which M represents at least one element selected from the group consisting of V, Fe, Co, Ni, and Mn, and x represents a number from 0 to 1; and is a positive electrode for a potassium ion battery comprising the positive electrode active material for a potassium ion battery according to the embodiment, or a potassium ion battery comprising the positive electrode for a potassium ion battery.

Abstract: Provided is a technology for producing a positive electrode active substance mainly composed of FeOF having a sufficient charge-discharge capacity, in the short-time and easy manner. Also provided is a positive electrode active substance mainly composed of FeOF. The method for producing the positive electrode active substance mainly composed of FeOF comprises the steps of admixing iron oxide Fe2O3 and iron fluoride FeF3 both in solid states, and melt-quenching the mixture in an atmosphere of inert gas. The positive electrode active substance mainly composed of FeOF is composed of not less than 50% by weight of FeOF with a remainder being iron fluoride FeF3 and/or iron oxide Fe2O3.

Abstract: Provided is a technology for producing a positive electrode active substance mainly composed of FeOF having a sufficient charge-discharge capacity, in the short-time and easy manner. Also provided is a positive electrode active substance mainly composed of FeOF. The method for producing the positive electrode active substance mainly composed of FeOF comprises the steps of admixing iron oxide Fe2O3 and iron fluoride FeF3 both in solid states, and melt-quenching the mixture in an atmosphere of inert gas. The positive electrode active substance mainly composed of FeOF is composed of not less than 50% by weight of FeOF with a remainder being iron fluoride FeF3 and/or iron oxide Fe2O3.