SPINEL-TYPE LITHIUM COBALT MANGANESE-CONTAINING COMPLEX OXIDE

• Main Authors: TAKAHASHI TSUKASA, YAMAGUCHI KYOHEI, SHIBAMURA NATSUMI, MITSUMOTO TETSUYA, HATA YOSHIMI, KAGEI SHINYA
• Format: Patent
• Language: English; Korean
• Published: 11.03.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

4.5V 이상의 작동 전위를 가질 뿐만 아니라, 또한 5.5∼5.0V 영역의 용량역을 확대할 수 있고, 에너지 밀도도 높일 수 있는 Co계 5V 스피넬형 리튬망간 함유 복합 산화물을 제공한다. 공간군 Fd-3m에 속하는 결정 구조를 갖고, 일반식 [Li(CoMn)O](식 중, 0.90≤x≤1.15, 0.75≤y≤1.25)으로 표시되는 스피넬형 리튬코발트망간 함유 복합 산화물로서, 펀더멘털법을 사용한 리트벨트법으로 측정되는 결정자 사이즈가 100㎚∼200㎚이며, Li-O의 원자 간 거리가 1.80Å∼2.00Å이며, 왜곡이 0.20∼0.50인 스피넬형 리튬코발트망간 함유 복합 산화물을 제안한다. There is provided a Co-based 5-V spinel-type lithium manganese-containing complex oxide not only having an operating potential of 4.5 V or higher but also being capable of extending its capacity region of a 5.5 to 5.5 V region and being capable of enhancing its energy density as well. There is proposed a spinel-type lithium cobalt manganese-containing complex oxide having a crystal structure classified as a space group Fd-3m and being represented by the general formula [Lix(CoyMn3−x−y)O4−δ] (wherein 0.90≦x≦1.15 and 0.75≦y≦1.25), wherein the oxide has a crystallite size measured by a Rietveld method using the fundamental method of 100 nm to 200 nm, an interatomic distance of Li-O of 1.80 Å to 2.00 Å, and a strain of 0.20 to 0.50.