基本信息:
- 专利标题: LITHIUM-IONEN-ZELLE MIT HOHER SPEZIFISCHER ENERGIEDICHTE
- 专利标题(英):LITHIUM-ION CELL WITH A HIGH SPECIFIC ENERGY DENSITY
- 申请号:PCT/EP2021/064556 申请日:2021-05-31
- 公开(公告)号:WO2021249808A1 公开(公告)日:2021-12-16
- 发明人: PYTLIK, Edward , ENSLING, David
- 申请人: VARTA MICROBATTERY GMBH
- 申请人地址: VARTA-Platz 1
- 专利权人: VARTA MICROBATTERY GMBH
- 当前专利权人: VARTA MICROBATTERY GMBH
- 当前专利权人地址: VARTA-Platz 1
- 代理机构: PATENTANWALTSKANZLEI CARTAGENA PARTNERSCHAFTSGESELLSCHAFT KLEMENT, EBERLE MBB
- 优先权: EP20179112.6 2020-06-09
- 主分类号: H01M10/052
- IPC分类号: H01M10/052 ; H01M10/0583 ; H01M10/0587 ; H01M4/38 ; H01M4/46 ; H01M50/107 ; H01M50/538 ; H01M4/02 ; H01M2004/027 ; H01M4/386 ; H01M4/387 ; H01M4/463
A lithium ion cell (100) is known comprising an electrode-separator composite (104) with the sequence: anode (120 / separator (118) / cathode (130), wherein the anode (120) and the cathode (130) each comprise a current collector (110, 115) with a first and a second edge (110e, 115e) and the current collectors each have a main region (122, 126) provided with a layer made of the respective electrode material (123, 125), and a free edge strip (121, 117) extending along the first edge (110e, 115e) and not provided with the electrode material. The composite (104) is provided in the form of a winding with two terminal end sides or is part of a stack, which is formed by two or more identical electrode-separator composites and also has two terminal sides, and is surrounded by a housing optionally together with the other identical electrode-separator composite/s of the stack. The anode (120) and the cathode (130) are designed and/or arranged relative to one another within the composite (104) in such a way that the first edge (110e) of the anode current collector passes out of one of the terminal end sides or sides of the stack and the first edge (115e) of the cathode current collector passes out of the other terminal end sides or sides of the stack. The cell (100) has a contact sheet metal part (101a, 102, 155), with which one of the first edges (110e, 115e) is in direct contact and which is connected to same via welding. According to the invention, the negative electrode material comprises at least one material, as an active material, from the group including silicon, aluminium, tin, antimony and a compound or alloy of these materials, to/from which lithium can reversibly intercalated and deintercalated, in a proportion of 20 wt.% to 90 wt.%.