Nanostructured poly(hydroquinonyl-benzoquinonyl sulfide)/multiwalled carbon nanotube composite cathodesNarayan, Rekha (Avtor) Blagojević, Aleksandar (Avtor) Mali, Gregor (Avtor) Vélez Santa, John Fredy (Avtor) Bitenc, Jan (Avtor) Randon-Vitanova, Anna (Avtor) Dominko, Robert (Avtor) batteriescarbon nanotubeselectrical conductivityelectrodespolymersCost-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$^{−1}$.20222022-10-14 12:28:48Članek v reviji142004sl