The fitting device for refrigerant of the present invention basically comprises a connection element having connection screw parts formed on both sides of the outer periphery, and a 1st inclined stage, a 1st horizontal stage and a central stage formed on the inner periphery, a nut element screw-coupled with the connection element, a back ferrule element (30) inserted into the nut element and positioned between the nut element and the connection element, and a seat (40) mounted to the inner periphery of the connection element between the 1st horizontal stage and the central stage.
본 발명은 층상 구조의 리튬 망간산화물과 리튬 함유 금속산화물을 포함하는 복합 양극 활물질을 제공한다. 또한, 본 발명은 상기 복합 양극 활물질을 포함하여, 출력특성이 향상된 이차전지, 전지모듈 및 전지 팩을 제공한다.patents-wipo patents-wipo