Title:
PREPARATION METHOD FOR METAL OXALATE LITHIUM ION BATTERY NEGATIVE ELECTRODE MATERIAL WITH ORDERED THREE-DIMENSIONAL SKELETON STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2023/040406
Kind Code:
A1
Abstract:
A preparation method for a ferrous oxalate lithium ion battery negative electrode with an ordered three-dimensional skeleton structure. The method comprises: preparing a metal source solution and an oxalic acid or an acidic oxalate solution, mixing the two, and performing in-situ splitting on common metal oxalates with different morphologies by arranging a cooling step, so that metal oxalate particles have a three-dimensional skeleton structure in which more active sites are exposed, thereby providing a large number of channels and structural supports for the storage of alkali metal ions by utilizing abundant active sites themselves, effectively improving the electrochemical performance of the material, and achieving a high energy storage capacity.
Inventors:
YAO YAOCHUN (CN)
GAO GENG (CN)
CUI DINGFANG (CN)
ZHANG KEYU (CN)
YANG BIN (CN)
MI RUZHONG (CN)
DAI YONGNIAN (CN)
GAO GENG (CN)
CUI DINGFANG (CN)
ZHANG KEYU (CN)
YANG BIN (CN)
MI RUZHONG (CN)
DAI YONGNIAN (CN)
Application Number:
PCT/CN2022/101519
Publication Date:
March 23, 2023
Filing Date:
June 27, 2022
Export Citation:
Assignee:
UNIV KUNMING SCIENCE & TECHNOLOGY (CN)
International Classes:
C07C55/07; C07C51/41; H01M4/58; H01M10/0525
Foreign References:
| CN113979859A | 2022-01-28 | |||
| CN108417786A | 2018-08-17 | |||
| CN101580464A | 2009-11-18 | |||
| CN113264821A | 2021-08-17 | |||
| CN102942471A | 2013-02-27 | |||
| CN106145038A | 2016-11-23 | |||
| CN111153790A | 2020-05-15 | |||
| US20190177178A1 | 2019-06-13 | |||
| US20160083410A1 | 2016-03-24 |
Attorney, Agent or Firm:
BEIJING DONGFANGSHENGFAN IP AGENCY CO., LTD. (CN)
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