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Secondary battery and preparation method thereof

A technology for secondary batteries and manufacturing methods, applied in secondary battery manufacturing, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as insufficient volumetric capacity, reduce weight and volume, reduce contact resistance, improve The effect of gram capacitance and volume capacitance

Inactive Publication Date: 2018-05-25
林逸樵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the problem of insufficient volume capacity of known secondary batteries using silicon-containing electrode materials

Method used

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  • Secondary battery and preparation method thereof
  • Secondary battery and preparation method thereof
  • Secondary battery and preparation method thereof

Examples

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no. 1 example

[0021] see figure 2 , figure 2 It is a schematic diagram of the structure of the secondary battery according to the first embodiment of the present invention. In the first embodiment, the secondary battery 2 includes a positive electrode 21, a negative electrode 22, and a separator 23, and the negative electrode 22 is separated from the positive electrode 21. , and the separator 23 is sandwiched between the positive electrode 21 and the negative electrode 22 and is in contact with the positive electrode 21 and the negative electrode 22 respectively. The positive electrode 21 includes a first current collector 211, a positive electrode active material layer 212 and a first carbon material layer 213, the positive electrode active material layer 212 is arranged on the first current collector 211 side, the first carbon material layer 213 is arranged on the first current collector 211 and the positive electrode Between the active material layers 212 ; the negative electrode 22 i...

no. 2 example

[0025] see image 3 , image 3 It is a schematic structural diagram of a secondary battery 3 according to the second embodiment of the present invention. In the second embodiment, the secondary battery 3 includes a positive electrode 31, a negative electrode 32, and a separator 33, and the negative electrode 32 is separated from the positive electrode 31. set, and the separator 33 is sandwiched between the positive electrode 31 and the negative electrode 32 and is in contact with the positive electrode 31 and the negative electrode 32 respectively. The positive electrode 31 includes a first current collector 311, a positive electrode Active material layer 312 and first carbon material layer 313, the positive electrode active material layer 312 is arranged on the first current collector 311 side, the first carbon material layer 313 is arranged on the first current collector 311 and the positive electrode Between the electrode active material layers 312 ; the negative electrode...

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Abstract

The invention discloses a secondary battery, comprising a positive electrode, wherein the positive electrode comprises a first current collector, a positive electrode active material layer set at oneside of the first current collector, and a first carbon material layer set between the first current collector and the positive electrode active material layer; a negative electrode, wherein the negative electrode and the positive electrode are set separately, the negative electrode comprises a second current collector, and a plurality of composite layers which are overlapped mutually and are setat one side of the second current collector, and each composite layer comprises a second carbon material layer and a silicon-contained material layer set on the second carbon material layer; and isolating membrane clamped between the positive electrode and the negative electrode.

Description

technical field [0001] The invention relates to a secondary battery, in particular to a lithium battery with increased volume capacity. Background technique [0002] Secondary battery generally refers to a battery that can be recharged and reused after the electric energy is consumed, including lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries, lithium batteries, etc. In recent years, the use of lithium batteries has become the mainstream. At present, the application of secondary batteries is mainly concentrated in electronic devices, and can also be used in the fields of energy storage and power batteries, such as electric vehicles, large uninterruptible power supply systems (uninterruptible power supply, UPS), and even aerospace devices. [0003] However, with the development of science and technology, the demand for electric capacity of electronic devices has also increased compared with the past, resulting in the existing secondary batteries g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04
CPCH01M10/04Y02P70/50
Inventor 林逸樵
Owner 林逸樵