Preparation method of cathode material of lithium ion battery and related product thereof

A technology for lithium ion batteries and negative electrode materials, applied in electrode manufacturing, battery electrodes, non-aqueous electrolyte battery electrodes, etc., can solve the problems of inability to observe the growth process, difficult to control the reaction process, incomplete morphology and structure, etc., to improve the cycle. performance, avoid the introduction of impurities, the effect of simple preparation process

Active Publication Date: 2020-08-18
XIANGTAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is agglomeration phenomenon in the preparation process of hydrothermal method, and impurities are easy to mix in, especially when preparing nanoparticles
In addition, since the hydrothermal method is carried out in a sealed and invisible container, it is impossible to observe the growth process, it is difficult to control the reaction process, and the reaction is likely to be incomplete, resulting in incomplete morphology and structure, or mixed structures. Together, far from expected results

Method used

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  • Preparation method of cathode material of lithium ion battery and related product thereof
  • Preparation method of cathode material of lithium ion battery and related product thereof
  • Preparation method of cathode material of lithium ion battery and related product thereof

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preparation example Construction

[0053] The technical scheme of the present invention provides a kind of preparation method of lithium-ion battery negative electrode material, with reference to figure 1 shown, including the following steps:

[0054] (1) Select a metal foil as the current collector, and pretreat it, and clean the surface;

[0055] (2) attaching a porous nano-template on the surface of the metal foil through the above-mentioned pretreatment;

[0056] (3) Using a pulsed laser deposition system to deposit SnO 2 ;

[0057] (4) annealing is carried out to the sample that above-mentioned step (3) obtains;

[0058] (5) remove the porous nano-template described in step (2), obtain SnO on the metal foil described in step (1) 2 array of nanopillars.

[0059] like figure 2 As shown, it is a schematic diagram of the preparation method of lithium-ion battery negative electrode materials. This method uses pulsed laser deposition (PLD) to prepare lithium-ion battery negative electrode materials, which...

Embodiment 1

[0063] A preparation method for lithium-ion battery anode materials, using pulsed laser deposition to prepare highly ordered SnO on single-sided smooth Cu foil 2 The nanocolumn array specifically comprises the following steps:

[0064] (1) Select a smooth Cu foil on one side and pretreat it, including the following steps:

[0065] a. Put the selected Cu foil into the acetone (CH 3 COCH 3 ) in a beaker, then put it into an ultrasonic cleaner filled with deionized water, and ultrasonically clean it for 5 minutes at room temperature;

[0066] b. Then immerse the Cu foil in absolute ethanol, and ultrasonically clean it for 5 minutes;

[0067] c. Finally, clean the smooth surface of the Cu foil with a plasma cleaner for 300 s.

[0068] (2) The ultrathin AAO template was soaked in acetone to remove the PMMA support layer, and then transferred in acetone to the smooth surface of the Cu foil cleaned in step (1).

[0069] (3) Preparation of SnO on single-sided smooth Cu foil by pu...

Embodiment 2

[0076] Fabrication of highly ordered SnO on single-sided smooth Cu foils by pulsed laser deposition 2 The nanocolumn array specifically comprises the following steps:

[0077] (1) Select a smooth Cu foil on one side and pretreat it, including the following steps:

[0078] a. Put the cut Cu foil into the acetone (CH 3 COCH 3 ) in a beaker, then put it into an ultrasonic cleaner filled with deionized water, and ultrasonically clean it for 5 minutes at room temperature;

[0079] b. Then immerse the Cu foil in absolute ethanol and ultrasonically clean it for 8 minutes;

[0080] c. Finally, clean the smooth surface of the Cu foil with a plasma cleaner for 250 s.

[0081] (2) The ultrathin AAO template was soaked in acetone to remove the PMMA support layer, and then transferred in acetone to the smooth surface of the Cu foil cleaned in step (1).

[0082] (3) Preparation of SnO on single-sided smooth Cu foil by pulsed laser deposition 2 nanopillars. Deposit at room temperature...

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Abstract

The invention discloses a preparation method of a cathode material of a lithium ion battery and a related product thereof. The method comprises the steps of selecting a piece of metal foil as a current collector, preprocessing the metal foil, and cleaning the surface of the metal foil; attaching a porous nano template to the surface of the preprocessed metal foil; depositing SnO2 by using a pulsedlaser deposition system; carrying out annealing treatment; and removing the porous nano template to obtain a SnO2 nano pillar array on the metal foil. The method adopts pulsed laser deposition to prepare the cathode material of the lithium ion battery, agglomeration of products can be well limited, introduction of impurities is avoided, and thus the method has the advantages of simple preparationprocess, reliable process and the like; meanwhile, the prepared highly-ordered SnO2 nano pillar array material has the advantages of clear interface, complete structure and the like; and when the prepared material is used as the cathode material of the lithium ion battery, an efficient electron transmission channel can be provided, and most importantly, volume expansion can be effectively relieved in the charging and discharging process, thus the cycle performance of the battery is improved, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of preparation of nanometer materials, in particular to a preparation method of a negative electrode material of a lithium ion battery and related products. Background technique [0002] Compared with nickel-metal hydride batteries, nickel-chromium batteries and lead-acid batteries, lithium-ion batteries are widely used in portable electronic devices due to their high safety, high energy density, small size and light weight. Such as mobile phones, laptops, cameras, etc. In addition, lithium-ion batteries are also the main source of power for new energy vehicles that have been developing rapidly in recent years. The commercialization of lithium-ion batteries is mainly due to the development of graphite layered carbon negative electrode materials, but the theoretical capacity of carbon negative electrodes is low (only 372mAh / g), which cannot meet the increasing demands of modern society on energy density and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/28C23C14/08C23C14/04C23C14/02C23C14/58H01M4/04H01M4/13H01M4/48H01M10/0525B82Y40/00B82Y30/00
CPCC23C14/28C23C14/086C23C14/022C23C14/042C23C14/5806C23C14/5873H01M4/0423H01M4/483H01M10/0525H01M4/13B82Y30/00B82Y40/00Y02E60/10
Inventor 钟向丽戴李雨芬钟高阔訾孟飞胡焕东李江宇王金斌
Owner XIANGTAN UNIV
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