In-situ assembling method of lithium ion battery

A lithium-ion battery, in-situ assembly technology, applied in battery electrodes, secondary batteries, non-aqueous electrolyte storage batteries, etc., can solve problems such as lithium intercalation transmission behavior, to fill market gaps, meet experimental needs, and simple preparation principle Effect

Inactive Publication Date: 2013-08-14
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, and seek to provide a simple and practical method to realize the in-situ assembly of lithium-ion batteries using a single nanowire or nanotube to solve the problem of lithium insertion and desorption during charging and discharging. The working mechanism of lithium and the transmission behavior of lithium ions, etc., with the help of existing electron microscopy equipment, can measure the performance of a single nanowire by constructing a lithium ion primary battery structure, so as to be suitable for the development and development of new energy and renewable clean energy. use

Method used

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  • In-situ assembling method of lithium ion battery

Examples

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Effect test

Embodiment 1

[0014] Example 1: In situ assembly of liquid electrolyte lithium ion battery

[0015] In this embodiment, a high-resolution transmission electron microscope produced by the Swedish Nanofactory Company was selected, and a lithium-ion battery was constructed on its in-situ sample stage. The specific process steps are:

[0016] (1) LiCoO 2 Particles 2 adhere to the AFM probe head 4 of the in-situ sample stage as a cathode;

[0017] (2) Then in LiCoO 2 The surface of the particle 2 is dripped with an imine-based ionic liquid 3 as a liquid electrolyte, and then the in-situ sample stage is inserted into the transmission electron microscope;

[0018] (3) Drop the liquid dispersed with metal oxide nanowires 1 on the gold probe 5 of the in-situ sample stage, so that the metal oxide nanowires adhere to the tip of the gold probe 5 as the anode, which is selected Metal oxides include iron oxide, copper oxide and zinc oxide;

[0019] (4) Inside the high-resolution transmission electron...

Embodiment 2

[0020] Embodiment 2: in-situ assembly of solid electrolyte lithium ion battery

[0021] In this embodiment, a high-resolution transmission electron microscope produced by the Swedish Nanofactory Company was selected, and a lithium-ion battery was constructed on its in-situ sample stage. The specific process steps include:

[0022] (1) first metal Li2 is adhered to the AFM probe head 4 of the conventional in-situ sample stage as the cathode;

[0023] (2) Insert the in-situ sample stage into the transmission electron microscope again. Since metal Li2 is easily oxidized, during the insertion into the transmission electron microscope, oxides (Li 2 O) Layer 3 acts as a solid electrolyte;

[0024] (3) Drop the liquid dispersed with metal oxide nanowires 1 on the gold probe 5 of the in-situ sample stage, so that the metal oxide nanowires adhere to the tip of the gold probe 5 as the anode, which is selected Metal oxides include iron oxide, copper oxide and zinc oxide;

[0025] (4) ...

Embodiment 3

[0027] In this embodiment, the steps of Examples 1 and 2 are repeated, and the metal oxide nanowires are replaced with metal oxide nanotubes, respectively, to prepare lithium-ion battery structures with a single metal oxide nanotube as the negative electrode.

[0028] In this embodiment, the purpose of the present invention is achieved by using a single metal oxide nanowire or nanotube to assemble a lithium-ion battery structure in situ, and at the same time complete the performance measurement of a single metal oxide nanowire or nanotube. For the dimensional characteristics of wires or nanotubes, only this embodiment can realize their performance measurement at present.

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Abstract

The invention belongs to the technical field of the preparation of a lithium ion battery, and relates to a method for in-situ assembling of the lithium ion battery by utilizing a single nano wire or a single nano tube. By selecting a transmission electron microscope device, the method comprises the following steps of: firstly adhering metal lithium (Li) or LiCoO2 particles onto an AFM probe of an in-situ sample table of a transmission electron microscope respectively to form a cathode of the lithium ion battery, then dropping the liquid with metal oxide nano wires on the metal probe of the in-situ sample table of the transmission electron microscope with an oxide layer formed on the metal particles as lithium ion battery electrolyte to ensure that the metal oxide nano wires are adhered onto a sharp end of the metal probe to be used as an anode of the lithium ion battery, and driving a single metal oxide nano wire to contact liquid or solid electrolyte by adopting piezoelectric ceramic so as to realize the in-situ assembling of the lithium ion battery. The in-situ assembling method is novel in the designing concept, simple in principle, low in preparation cost, environment-friendly in production environment and wide in practicability.

Description

Technical field: [0001] The invention belongs to the technical field of lithium ion battery preparation, and relates to a new process for assembling lithium ion batteries in situ by using single nanowires or nanotubes, in particular to an in situ assembling method for lithium ion batteries. Background technique: [0002] Because of its high capacity, high working voltage, light weight, long cycle life, good safety performance, and no pollution to the environment, lithium-ion batteries are widely used in portable electronic devices, electric vehicles, space technology, and defense industries. prospect. Lithium-ion battery electrode materials will undergo a series of complex chemical reactions during the charging and discharging process. Along with these chemical reactions, the electrode materials will expand and shrink in volume. Multiple expansions and shrinkages will cause irreversible damage to the electrode materials. Domestic Foreign researchers have found that transiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M4/131H01M4/1391H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 王乙潜李春艳梁文双蔡鎔声
Owner QINGDAO UNIV
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