Title:
CARBONACEOUS MATERIAL AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY COMPRISING SAME, AND ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/082308
Kind Code:
A1
Abstract:
A carbonaceous material and a preparation method therefor, a secondary battery comprising same, and an electrical device. Under constant temperature and humidity conditions of 25 bars and 40% RH, the adsorption rate v of the carbonaceous material when using water vapor for adsorption testing satisfies 0.015sgvsg0.050, and water vapor adsorption testing is performed under the following conditions: in a constant temperature and humidity chamber of 25 bars and 40% RH, the carbonaceous material having a mass of M1 is placed in a container, the water vapor adsorption mass m2 and water vapor adsorption time t when the carbonaceous material adsorbs water vapor to reach equilibrium are recorded; thus, the water vapor adsorption rate v = m2/(m1X t), the unit of measurement of m1 is g, the unit of measurement of m2 is g, and the unit of measurement of t is h. The carbonaceous material can ensure relatively high gram capacity, relatively high initial coulombic efficiency and relatively high structural stability.
Inventors:
MA YU (CN)
ZHANG XINXIN (CN)
CHEN XIAOXIA (CN)
OUYANG CHUYING (CN)
LIN WENGUANG (CN)
CHEN SHANGDONG (CN)
CHENG WEIMING (CN)
ZHENG XIAOJI (CN)
ZHANG XINXIN (CN)
CHEN XIAOXIA (CN)
OUYANG CHUYING (CN)
LIN WENGUANG (CN)
CHEN SHANGDONG (CN)
CHENG WEIMING (CN)
ZHENG XIAOJI (CN)
Application Number:
PCT/CN2022/126836
Publication Date:
April 25, 2024
Filing Date:
October 21, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/587
Foreign References:
| GB292798A | ||||
| CN106133963A | 2016-11-16 | |||
| JP2010067437A | 2010-03-25 |
Other References:
TAO ZHANG: "Pinecone biomass-derived hard carbon anodes for high-performance sodium-ion batteries", RSC ADVANCES, ROYAL SOCIETY OF CHEMISTRY, GB, vol. 7, no. 66, 1 January 2017 (2017-01-01), GB , pages 41504 - 41511, XP093161070, ISSN: 2046-2069, DOI: 10.1039/C7RA07231G
LIU, YUNCHUAN ET AL.: "Compactness of Residual Char of Resins by Moisture Adsorption Method", AEROSPACE MATERIALS & TECHNOLOGY, vol. 43, no. 5, 31 October 2013 (2013-10-31), ISSN: 1007-2330
HUA-QING XIE: "Comparison of Two Kinetic Analysis Methods for Biomass Pyrolysis Processes", JOURNAL OF NORTHEASTERN UNIVERSITY (NATURAL SCIENCE), vol. 34, no. 6, 1 June 2013 (2013-06-01), pages 845 - 848, XP093161084
LIU, YUNCHUAN ET AL.: "Compactness of Residual Char of Resins by Moisture Adsorption Method", AEROSPACE MATERIALS & TECHNOLOGY, vol. 43, no. 5, 31 October 2013 (2013-10-31), ISSN: 1007-2330
HUA-QING XIE: "Comparison of Two Kinetic Analysis Methods for Biomass Pyrolysis Processes", JOURNAL OF NORTHEASTERN UNIVERSITY (NATURAL SCIENCE), vol. 34, no. 6, 1 June 2013 (2013-06-01), pages 845 - 848, XP093161084
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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