Aluminum-cobalt-tin alloy lithium ion battery anode material

A negative electrode material, tin alloy technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of low theoretical specific capacity, achieve the effect of simple and efficient process, improve cycle and stability, and overcome expansion or shrinkage

Inactive Publication Date: 2016-12-14
QINGDAO WINCHANCE TECH
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AI Technical Summary

Problems solved by technology

[0002] At present, the anode materials of lithium-ion batteries used in the market are mainly graphite materials, whose theoretical specific capacity is relatively low, and performance such as cycle performance and capacity need to be improved.

Method used

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Embodiment 1

[0014] A method for preparing an aluminum-cobalt-tin alloy negative electrode material, the steps comprising:

[0015] One, prepare the tin electroplating solution; two, add the prepared tin electroplating solution in the electroplating tank, use the platinum sheet as the anode, and use the aluminum sheet as the cathode to carry out electroplating; three, prepare the cobalt electroplating solution; four, prepare the cobalt The electroplating solution is added in the electroplating tank, and the platinum sheet in step 2 is used as the anode, and the aluminum sheet after tinning is used as the cathode, and electroplating is carried out; 5. After the aluminum sheet after electroplating is cleaned and dried, the aluminum-cobalt-tin alloy negative electrode material is obtained.

[0016] The electroplating solution formula in described step 1 is: tin nitrate 13g / L, sodium hydrogen phosphate 17g / L, sodium lauroyl sarcosinate 9g / L.

[0017] The process conditions of the second step a...

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Abstract

The invention relates to a preparation method of an aluminum-cobalt-tin alloy lithium ion battery anode material. The preparation method comprises the steps that 1, a tin electroplatingsolution is prepared; 2, the prepared tin electroplatingsolution is added to an electroplatingtank, and a platinum sheet serves as an anode and an aluminum sheetserves as acathode for electroplating; 3, a cobaltelectroplatingsolution is prepared; 4, the prepared cobaltelectroplatingsolution is added to the electroplatingtank, and the platinum sheetin the step 2 serves as theanode and the electroplatedaluminum sheetserves as thecathode for electroplating; 5, the electroplated aluminum sheet is cleaned and dried, and then the aluminum-cobalt-tin alloy lithium ion battery anode material is obtained.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a preparation method of a lithium ion battery negative electrode material. Background technique [0002] At present, the anode materials of lithium-ion batteries used in the market are mainly graphite materials, whose theoretical specific capacity is relatively low, and performance such as cycle performance and capacity need to be improved. Improvement of the performance of lithium-ion battery anode materials. There is no solvent co-embedding during the charging and discharging process of metal tin alloy materials, and there will be no peeling phenomenon similar to graphite materials, but it is easy to expand or shrink during charging and discharging cycles. How to choose a suitable metal and electroplating process is crucial to overcome the above Disadvantages are especially important. Contents of the invention [0003] Aiming at the problems existing in the prior art, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/46H01M4/1395H01M10/0525C25D3/30C25D3/12
CPCC25D3/12C25D3/30H01M4/1395H01M4/38H01M4/387H01M4/46H01M4/463H01M10/0525Y02E60/10
Inventor 苏建丽
Owner QINGDAO WINCHANCE TECH
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