Title:
COMPOSITE-COATED NANO-TIN NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/114373
Kind Code:
A1
Abstract:
Provided is a composite-coated nano-tin negative electrode material, comprising: a tin-based nano material, a nano-copper layer coated on the surface of the tin-based nano material, and a conductive protective layer coated on the surface of the nano-copper layer. The nano-copper layer can inhibit the volume expansion of the nano-tin, can keep the nano-tin material unbroken, and can avoid direct contact between the nano-tin and an electrolyte, so as to form a stable SEI and increase the conductivity of an electrode. Further coating the surface of the nano-copper layer with a conductive layer can effectively inhibit the oxidation of the nano-copper, thereby improving the electrochemical performance thereof. The composite-coated nano-tin negative electrode material of the present invention is used as a negative electrode material of a lithium ion battery, has an excellent electrochemical performance, and has potential application prospects in portable mobile devices and electric vehicles.
Inventors:
JIN ZHOU (CN)
YU HAILONG (CN)
HUANG XUEJIE (CN)
YU HAILONG (CN)
HUANG XUEJIE (CN)
Application Number:
PCT/CN2018/108693
Publication Date:
June 20, 2019
Filing Date:
September 29, 2018
Export Citation:
Assignee:
INST PHYSICS CAS (CN)
International Classes:
H01M4/62; H01M10/0525
Foreign References:
| CN1705148A | 2005-12-07 | |||
| CN108206285A | 2018-06-26 | |||
| CN107492651A | 2017-12-19 | |||
| CN106410159A | 2017-02-15 | |||
| CN104979559A | 2015-10-14 | |||
| JP2013131465A | 2013-07-04 |
Other References:
See also references of EP 3637513A4
Attorney, Agent or Firm:
PANAWELL & PARTNERS, LLC (CN)
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