Title:
SECONDARY BATTERY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/152755
Kind Code:
A1
Abstract:
Provided is a secondary battery, comprising a positive electrode, an electrolytic solution, a negative electrode and a diaphragm, wherein the positive electrode comprises a positive electrode current collector, and a positive electrode active material layer arranged on the positive electrode current collector; the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material comprises a material into which potassium salt anions can be embedded; the electrolytic solution comprises potassium salt and a non-aqueous solvent; and the negative electrode comprises a metal foil, and the metal foil serves as a negative electrode current collector and a negative electrode active material at the same time. An electrolytic solution of the secondary battery takes potassium salt as an electrolyte, thereby solving the problem of limited lithium resource reserves in lithium secondary batteries commonly used at present, reducing the cost of the secondary battery and achieving environmental friendliness. In addition, since the metal foil serves as a negative electrode active material and a current collector at the same time, the weight and volume of the battery are reduced, thus improving the energy density of the battery, and saving on the production costs of the battery at the same time.
Inventors:
TANG YONGBING (CN)
LI BIFA (CN)
ZHANG FAN (CN)
LI BIFA (CN)
ZHANG FAN (CN)
Application Number:
PCT/CN2017/074634
Publication Date:
August 30, 2018
Filing Date:
February 23, 2017
Export Citation:
Assignee:
SHENZHEN INST ADV TECH (CN)
International Classes:
H01M4/36
Foreign References:
| CN101241802A | 2008-08-13 | |||
| US20160285089A1 | 2016-09-29 | |||
| CN106450247A | 2017-02-22 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
Previous Patent: SECONDARY BATTERY AND PREPARATION METHOD THEREFOR
Next Patent: MOV ASSEMBLY HAVING INSULATING BEARING PLATE STRUCTURE
Next Patent: MOV ASSEMBLY HAVING INSULATING BEARING PLATE STRUCTURE