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Chitosan-derived graphitic carbon@Fe3C as anode materials for lithium ion battery.
- Source :
- Journal of Materials Science; Jun2022, Vol. 57 Issue 22, p9939-9954, 16p, 1 Color Photograph, 1 Black and White Photograph, 3 Diagrams, 2 Charts, 6 Graphs
- Publication Year :
- 2022
-
Abstract
- Chitosan-based carbon materials have attracted great attention in electrochemical energy storage. Introducing iron metal or iron compounds into carbon materials favors to boost their electrochemical performance. Herein, chitosan-based graphitic carbon@Fe<subscript>3</subscript>C composites (CSGC@Fe<subscript>3</subscript>C) have been prepared as anode materials for lithium ion battery by a simple pyrolysis method. By manipulating the temperature higher than 700 °C, pure Fe<subscript>3</subscript>C encapsulated in chitosan-based graphitic carbon with different mass ratio from 30 to 53.8 wt% can be achieved. The resulting CSGC@Fe<subscript>3</subscript>C composites retain porous carbon sheet structure embedded with a large amount of Fe<subscript>3</subscript>C nanoparticles in size from 20 to 300 nm. The electrochemical measurements demonstrate CSGC@Fe<subscript>3</subscript>C with 53.8 wt% Fe<subscript>3</subscript>C as anode material for lithium ion battery can provide a highest reversible capacity of 423 mAh g<superscript>−1</superscript> at 0.1 A g<superscript>−1</superscript> over 100 charge/discharge cycles and stable cycling capacity of 195 mAh g<superscript>−1</superscript> at a high current density of 2 A g<superscript>−1</superscript> during 200 cycles. The catalysis of Fe<subscript>3</subscript>C on the reversible formation and decomposition of solid electrolyte interphase (SEI) has been corroborated and results in the improvement of surface capacitive contribution. This work provides a basic insight into metal carbides constructing biomass-based carbon anode materials to realize high-performance electrochemical energy storage device. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 57
- Issue :
- 22
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 157306478
- Full Text :
- https://doi.org/10.1007/s10853-021-06741-0