Invention Grant
- Patent Title: Hard carbon, method for preparing same, secondary battery comprising same, and electrical apparatus comprising same
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Application No.: US18469449Application Date: 2023-09-18
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Publication No.: US12126023B2Publication Date: 2024-10-22
- Inventor: Xiaoxia Chen , Xinxin Zhang , Chuying Ouyang , Yongsheng Guo , Jiarui Tian , Yu Ma , Ben Liu , Xiaoji Zheng
- Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
- Applicant Address: CN Hong Kong
- Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
- Current Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
- Current Assignee Address: CN Hongkong
- Agency: ANOVA LAW GROUP, PLLC
- Main IPC: H01M4/583
- IPC: H01M4/583 ; C01B32/05 ; H01M4/02

Abstract:
A hard carbon. A total quantity of adsorbed nitrogen under a relative pressure P/P0 of nitrogen between 10−8 and 0.035 is V1 cm3 (STP)/g and a total quantity of adsorbed nitrogen under a relative pressure P/Po of nitrogen between 0.035 and 1 is V2 cm3 (STP)/g in a nitrogen adsorption isotherm determined at a temperature of 77 K for the hard carbon. The hard carbon satisfies: V2/V1≤0.20 and 20≤V1≤150, where P represents an actual pressure of nitrogen, and P0 represents a saturated vapor pressure of nitrogen at a temperature of 77 K.
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