Title:
COMPOSITE MATERIAL HAVING PN JUNCTION STRUCTURE FOR SUPERCAPACITOR, ELECTRODE MATERIAL FOR SUPERCAPACITOR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/034234
Kind Code:
A1
Abstract:
The present invention relates to a composite material having a pn junction structure for a supercapacitor, an electrode material for a supercapacitor and a preparation method therefor. Said method comprises forming pn junctions between p-type oxide particles and n-type oxide particles by means of subjecting a p-type semiconducting oxide powder and an n-type semiconducting oxide powder to a physical or chemical process. These oxide particles having pn junctions can improve the resistance value of a supercapacitor material while quickly compensating for insertion charge of the charge/discharge process by means of the pn junctions. Therefore, the problem of large drop of the resistance value due to the introduction of a carbon-related material or a metal powder is avoided, thereby greatly improving the operating voltage and increasing the energy storage density. Compared to the original p-type oxides such as MnO2, the composite material obtained by the method of the present invention can improve not only the operating voltage but also the specific capacitance.
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Inventors:
QI JIANQUAN (CN)
WANG JINKUAN (CN)
MA ZHENWEI (CN)
ZHANG YUANXI (CN)
ZHANG QINQIN (CN)
LI MENGYING (CN)
SUN QINGWEN (CN)
CHANG JUANXIONG (CN)
HAN XIUMEI (CN)
WANG JINKUAN (CN)
MA ZHENWEI (CN)
ZHANG YUANXI (CN)
ZHANG QINQIN (CN)
LI MENGYING (CN)
SUN QINGWEN (CN)
CHANG JUANXIONG (CN)
HAN XIUMEI (CN)
Application Number:
PCT/CN2018/101309
Publication Date:
February 20, 2020
Filing Date:
August 20, 2018
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
H01G11/46; H01G11/24; H01G11/86
Foreign References:
| CN107537501A | 2018-01-05 | |||
| CN104517739A | 2015-04-15 |
Attorney, Agent or Firm:
BEIJING EASY JOY SOON IP AGENT LTD (CN)
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