Citation

Kiai, Maryam Sadat and Aslfattahi, Navid and Baydogan, Nilgun and Samylingam, Lingenthiram and Kadirgama, Kumaran and Kok, Chee Kuang (2025) Lignin-based microporous carbon nanofibers/S (LMCF@S) high performance cathode for superior room temperature Na–S batteries. Materials Chemistry and Physics, 339. p. 130768. ISSN 02540584

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Abstract

Sodium-sulfur batteries (Na–S) present a compelling option for large-scale energy storage due to their significant storage capacity, coupled with the abundant and cost-effective nature of their constituent materials. However, their practical deployment is hindered by several critical issues, including the low conductivity of sulfur and its reduction products, volume expansion, the shuttling effect of polysulfides, and the formation of sodium dendrites, all of which can contribute to rapid capacity degradation. Herein, lignin-derived microporous carbon nanofibers/S (LMCF@S) were successfully produced by employing polyvinylpyrrolidone (PVP) and lignin as the precursor and zinc nitrate hexahydrate (ZNH) as an additive, combination of electrospinning, pre-oxidation, and carbonization techniques. The cell is assembled with LMCF@S cathode and Na foil anode, resulting in a remarkable capacity of 642 mAh g−1 over 100 cycles at a current density of 1 A g−1. The high density of micropores in the LMCF@S cathode facilitates robust chemical bonding and rapid redox kinetics during the conversion reaction, resulting in enhanced utilization of sodium polysulfides (NaPSs) for the advancement of next-generation sodium-sulfur (Na–S) batteries.

Item Type:	Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Ms Suzilawati Abu Samah
Date Deposited:	30 Apr 2025 03:39
Last Modified:	30 Apr 2025 03:39
URII:	http://shdl.mmu.edu.my/id/eprint/13725

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