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Title:
NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE, POTASSIUM ION BATTERY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/027907
Kind Code:
A1
Abstract:
Provided is a negative electrode material with poly(para-phenylene) as a negative active substance, with a stacking/aggregation effect produced mainly by means of van der Waals force interaction between the molecules of the poly(para-phenylene), such that the poly(para-phenylene) has plenty of microporous structures and a larger interlayer spacing, which is conducive to the intercalation and deintercalation of potassium ions with a larger radius, and can also effectively alleviate the volume expansion. In addition, the rotating channel of the poly(para-phenylene) is further conducive to the intercalation and disintercalation of the potassium ions. By applying the negative electrode material to the preparation of a potassium ion battery, in combination with the corresponding electrolyte system, a stable potassium ion battery can be obtained, and the potassium ion battery has a higher specific capacity.

Inventors:
HAI YULONG (CN)
ZHONG GUOHUA (CN)
LI MENGHU (CN)
LU NING (CN)
XU HAIYANG (CN)
ZHANG SIYUAN (CN)
LV HAIYAN (CN)
LU ZIHENG (CN)
YANG CHUNLEI (CN)
Application Number:
PCT/CN2020/139649
Publication Date:
February 10, 2022
Filing Date:
December 25, 2020
Export Citation:
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Assignee:
SHENZHEN INST ADV TECH (CN)
International Classes:
H01M4/60; H01M4/137; H01M4/1399; H01M10/054; H01M10/058
Foreign References:
CN111816869A2020-10-23
CN1528028A2004-09-08
CN101140987A2008-03-12
CN105359301A2016-02-24
CN110121799A2019-08-13
CN110506355A2019-11-26
Attorney, Agent or Firm:
BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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