Nanostructured poly(hydroquinonyl-benzoquinonyl sulfide)/multiwalled carbon nanotube composite cathodes : improved synthesis and performance for rechargeable Li and Mg organic batteries

Narayan, Rekha (author), Blagojević, Aleksandar (author), Mali, Gregor (author), Vélez Santa, John Fredy (author), Bitenc, Jan (author), Randon-Vitanova, Anna (author), Dominko, Robert (author)

Cost-effective, simple, and easily reproducible synthesis methods of polymers are of profound significance when it comes to extracting high battery performance metrics from polymeric redox-active materials. This work reports a procedure for the solvothermal synthesis of a poly(hydroquinonyl-benzoquinonyl sulfide) (PHBQS) polymer and the development of its nanostructured composites with multiwalled carbon nanotubes (MWCNTs). Polymers are tested as high-performance cathode materials for Li$^+$ and Mg$^{2+}$ batteries. In configurations, compared to neat PHBQS, the PHBQS@5%MWCNT cathode exhibits superior electrochemical performance with high active material utilization owing to improved ion/electron transport pathways. Galvanostatic characterization of the PHBQS@5%MWCNT cathode in lithium batteries exhibited peak capacity up to 358 mAh g$^{−1}$ at a current density of 50 mA g$^{−1}$ (C/8) and excellent rate performance with a discharge capacity of 236 mAh g$^{−1}$ maintained even at high current density of 10C. The galvanostatic characterization in Mg batteries reveals more sluggish kinetics with a stable capacity of 200 mAh g$^{−1}$ at 50 mA g$^{−1}$.

• Language: English
• Keywords: batteries, carbon nanotubes, electrical conductivity, electrodes, polymers
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: Str. 6378−6388
• Numbering: Vol. 34, iss. 14
• PID: 20.500.12556/RUL-142004
• UDC: 620.1/.2
• ISSN on article: 0897-4756
• DOI: 10.1021/acs.chemmater.2c00862
• COBISS.SI-ID: 124763139
• Publication date in RUL: 14.10.2022

Record is a part of a journal

• Title: Chemistry of materials
• Shortened title: Chem. mater.
• Publisher: American Chemical Society
• ISSN: 0897-4756
• COBISS.SI-ID: 6557189

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: materiali, polimeri, sinteze, magnezij, baterije