发明名称 |
Lithium secondary battery containing cathode materials having high energy density and organic/inorganic composite porous membrane |
摘要 |
Disclosed is a secondary battery including a cathode, an anode, a membrane and an electrolyte, wherein the cathode contains a mixture of a first cathode material defined herein and a second cathode material selected from the group consisting of a second-(a) cathode material defined herein and a second-(b) cathode material defined herein, and a combination thereof, wherein a mix ratio of the two cathode materials (first cathode material: second cathode material) is 50:50 to 90:10, and the membrane is an organic/inorganic composite porous membrane including (a) a polyolefin-based membrane substrate and (b) an active layer in which one or more areas selected from the group consisting of the surface of the substrate and a portion of pores of the substrate are coated with a mixture of inorganic particles and a binder polymer, wherein the active layer has a structure in which the inorganic particles are interconnected and fixed through a binder polymer and porous structures are formed by the interstitial volume between the inorganic particles. |
申请公布号 |
US8715856(B2) |
申请公布日期 |
2014.05.06 |
申请号 |
US201113223731 |
申请日期 |
2011.09.01 |
申请人 |
CHOI SEUNGEUN;GOH EUNYOUNG;LEE HYANG MOK;KANG HEEGYOUNG;RYU SANGBAEK;KIM KIWOONG;LG CHEM, LTD. |
发明人 |
CHOI SEUNGEUN;GOH EUNYOUNG;LEE HYANG MOK;KANG HEEGYOUNG;RYU SANGBAEK;KIM KIWOONG |
分类号 |
H01M2/02;H01M2/16;H01M4/131;H01M4/50;H01M4/52;H01M4/62 |
主分类号 |
H01M2/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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