Enhanced Lithium Storage Properties of High Sulfur Doped Hard Carbon Derived from Thiophene-Containing Conjugated Microporous Polymer

被引：2
作者：
Zhang, Qingtang [1 ]
Lian, Fei [1 ]
Zhang, Ya [1 ]
Wang, Xiaomei [2 ]
机构：
[1] Lanzhou Univ Technol, Sch Petrochem Engn, 36 Pengjiaping, Lanzhou 730050, Gansu, Peoples R China
[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
来源：
ELECTRONIC MATERIALS LETTERS | 2023年 / 19卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Conjugated microporous polymer; Hard carbon; Anodes; Li-ion batteries; HIGH-PERFORMANCE ANODE; ELECTROCHEMICAL PERFORMANCE; ION; FABRICATION; NANOTUBES; BATTERIES;
D O I：
10.1007/s13391-023-00426-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The development of hard carbon with high capacity and long cycling stability is a significant issue for lithium ion batteries. Herein, thiophene-containing conjugated microporous polymer (SCMP) was synthesized using 1,3,5-triethynylbenzene 2,5-dibromothiophene by Sonogashira-Hagihara crosscoupling reactions. Then, high sulfur doped hard carbon (SHC) and KOH activated SHC (SHC-K) are prepared by direct carbonization and KOH-assisted carbonization of SCMP, respectively. Both samples were then investigated by SEM, elemental analysis, FTIR, XPS and Nitrogen adsorption/desorption. Taking advantages of sulfur content and abundant porosity, SHC-K delivers a first charge specific capacity of 842.2 mAh g(-1) at 0.1 A g(-1) and a specific charge capacity of 565.9 mAh g(-1) after 500 cycles at 0.6 A g(-1).
引用
收藏
页码：571 / 579
页数：9
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