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Enhanced Lithium Storage Properties of High Sulfur Doped Hard Carbon Derived from Thiophene-Containing Conjugated Microporous Polymer.
- Source :
- Electronic Materials Letters; Nov2023, Vol. 19 Issue 6, p571-579, 9p
- Publication Year :
- 2023
-
Abstract
- 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<superscript>−1</superscript> at 0.1 A g<superscript>−1</superscript> and a specific charge capacity of 565.9 mAh g<superscript>−1</superscript> after 500 cycles at 0.6 A g<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17388090
- Volume :
- 19
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Electronic Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 173342930
- Full Text :
- https://doi.org/10.1007/s13391-023-00426-3