Lithium battery negative electrode material and preparation method thereof
The invention relates to the technical field of lithium batteries, and discloses a lithium battery negative electrode material and a preparation method thereof.The lithium battery negative electrode material is of a hierarchical multi-layer structure and sequentially comprises a nanometer metal oxide core material layer, a nitrogen-doped porous carbon layer and graphene from inside to outside, according to the present invention, the lithium battery negative electrode material has high specific capacity, the nitrogen-doped porous carbon layer is adopted as the middle layer to coat the nanometer cerium oxide core material layer, the lithium battery negative electrode material has high specific capacity and high rate performance, the graphene is adopted as the outermost layer, and the graphene is adopted to form the three-dimensional bridging structure so as to achieve the high specific capacity and the high rate performance; and the lithium battery negative electrode material shows higher conductivity, rate capability and cycling stability..
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Patent| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Europäisches Patentamt - (2023) vom: 10. Okt. Zur Gesamtaufnahme - year:2023 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
XIAO GUOHUI [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| Anmerkungen: |
Source: www.epo.org (no modifications made), First posted: 2023-10-10, Last update posted on www.tib.eu: 2024-03-13, Last updated: 2024-03-15 |
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| Patentnummer: |
CN116864647 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
EPA000540552 |
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| 245 | 1 | 0 | |a Lithium battery negative electrode material and preparation method thereof |
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| 520 | |a The invention relates to the technical field of lithium batteries, and discloses a lithium battery negative electrode material and a preparation method thereof.The lithium battery negative electrode material is of a hierarchical multi-layer structure and sequentially comprises a nanometer metal oxide core material layer, a nitrogen-doped porous carbon layer and graphene from inside to outside, according to the present invention, the lithium battery negative electrode material has high specific capacity, the nitrogen-doped porous carbon layer is adopted as the middle layer to coat the nanometer cerium oxide core material layer, the lithium battery negative electrode material has high specific capacity and high rate performance, the graphene is adopted as the outermost layer, and the graphene is adopted to form the three-dimensional bridging structure so as to achieve the high specific capacity and the high rate performance; and the lithium battery negative electrode material shows higher conductivity, rate capability and cycling stability. | ||
| 650 | 4 | |a C01B: Non-metallic elements; compounds thereof (fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide c12p0003000000; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis c25b) | |
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| 650 | 4 | |a B82Y: Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | |
| 650 | 4 | |a C01F: Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare earth metals (metal hydrides c01b0006000000;salts of oxyacids of halogens c01b0011000000;peroxides, salts of peroxyacids c01b0015000000;sulfides or polysulfides of magnesium, calcium, strontium, or barium c01b0017420000;thiosulfates, dithionites, polythionates c01b0017640000;compounds containing selenium or tellurium c01b0019000000;binary compounds of nitrogen with metals c01b0021060000;azides c01b0021080000;metal amides c01b0021092000;nitrites c01b0021500000;phosphides c01b0025080000;salts of oxyacids of phosphorus c01b0025160000;carbides c01b0032900000; compounds containing silicon c01b0033000000;compounds containing boron c01b0035000000;compounds having molecular sieve properties but not having base-exchange properties c01b0037000000;compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, c01b0039000000;cyanides c01c0003080000;salts of cyanic acid c01c0003140000;salts of cyanamide c01c0003160000;thiocyanates c01c0003200000; fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide c12p0003000000;obtaining metal compounds from mixtures, e.g. ores, which are intermediate compounds in a metallurgical process for obtaining a free metal c22b;production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis c25b) | |
| 650 | 4 | |a H01M: Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | |
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