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US 11,380,888 B2Granted
Electrode and lithium secondary battery comprising same
AssigneesLG Energy Solution, Ltd., Korea Advanced Institute of Science and Technology
InventorsByoungkuk Son, Jang Wook Choi, Byung Gon Kim, Minchul Jang, Eunkyung Park, Junghun Choi, Donghyeon Kang
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Abstract
An electrode and a lithium secondary battery including the same. By preparing an electrode including an electrode active layer formed using a structure capable of supporting an electrode active material, safety and charge and discharge properties of a battery are improved due to morphological characteristics of the electrode active material being supported inside the structure.
Claims14
An electrode comprising:
- a current collector;
- and
- an electrode active layer comprising a structure for supporting an electrode active material, formed on the current collector,
- wherein the structure comprises a tube having one side surface or both side surfaces open;
- and a metal comprised on an inner surface of the tube,
- wherein the electrode active material is lithium metal as a negative electrode active material,
- wherein the lithium metal is formed inside the tube having the metal formed on the inner surface of the tube,
- wherein the tube comprises carbon,
- wherein the tube has a length, an inner diameter (Din) and outer diameter (Dex), and
- wherein the inner diameter (Din) of the tube ranges from 0.1 μm to 1.8 μm, the length of the tube ranges from 2 μm to 25 μm, and the outer diameter (Dex) of the tube ranges from 0.2 μm to 2 μm, and
- wherein the tube has a longitudinal section aspect ratio (a) of greater than 1 by the following Equation 1:
- a=L/Dex [Equation 1]
- in Equation 1, L is the length of the tube and Dex is the outer diameter of the tube.
10 more elements
Dependencies are inferred from the claim text.