Abstract: A positive electrode active material for a sodium ion battery, which has excellent cycle stability and durability against humidity, and a sodium ion battery containing the same are described. The positive electrode active material for a sodium ion battery includes core particles having a composition of Formula 1 below, and a shell composed of chromium oxide formed on a surface of the core particles. Na(Cr1-2xAl2x)O2 (x is 0.001 to 0.

Abstract: The invention relates to a solid electrolyte composition and a method for producing the same. The solid electrolyte composition according to the invention is characterized by including a material represented by [Formula 1] below. NaaZnbGacSd??Formula 1 (wherein, 2.70?a?2.90, 0.70?b?0.90, and 1.10?c?1.

Abstract: The present invention relates to a solid electrolyte composition and a method for preparing the same. A solid electrolyte composition according to the present invention is characterized by including a material represented by [Formula 1] below. NaaWbSicSbdSeBrf??[Equation 1] (Here, 2.80?a?2.89, 0.20?b?0.24, 0.08?c?0.12, 0.66?d?0.70, 3.91?e?4, and 0?f?0.09.

Abstract: There are provided an oxynitride-based phosphor and a light emitting device including the same, the oxynitride-based phosphor containing at least calcium (Ca), barium (Ba), silicon (Si), oxygen (O), and nitrogen (N) as host material components in a host material and having a rare-earth element dissolved in the host material as an activator, wherein the rare-earth element is at least one from a group consisting of manganese (Mn), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), dysprosium (Dy), terbium (Tb), holmium (Ho), erbium (Er), thulium (Tm), and ytterbium (Yb), and the host material has a monoclinic crystal structure in which a crystal lattice according to a peak of an X-ray powder diffraction pattern has values of a=7.076, b=23.888, c=4.827, ?=?=90°, and ?=109.110°.