New rationally designed hybrid polypyrrole@SnCoS4 as an efficient anode for lithium-ion batteries. (16th June 2021)

• Record Type: Journal Article
• Authors: Javadian, Soheila; Bayat, Elaheh; Parviz, Zohre; Dalir, Nima; Gharibi, Hussein
• Is Part Of: New journal of chemistry. Volume 45:Number 26(2021)
• Page Start: 11737
• Page End: 11751
• Publication Date: 2021-06-16
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d1nj00503k
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Three active materials containing binary metal sulfide (SnCoS4 ) were obtained via a simple hydrothermal method. Also, the electrochemical performance of the anode materials was investigated in a lithium-ion half-cell. Abstract : In the current study, the impact of two different substrates was investigated on the improvement in capacities. SnCoS4 nanoparticles were coated on polypyrrole nanotubes (PNT) and pyrolyzed polypyrrole nanotubes (P-PNT) using the facile hydrothermal method. Both anode materials were electrochemically compared to pure nanoparticles in the lithium-ion half-cell. The results of electrochemical analysis introduced the P-PNT–SnCoS4 as an optimum structure with a reversible capacity of 784 mA h g −1 at a current density of 0.2 A g −1 after 200 cycles. This finely-crystallized nanoparticle supported by carbonaceous polypyrrole nanotubes still maintained its capacity (424 mA h g −1 ) at a higher current density of 4 A g −1, which shows the efficient synergistic contribution of the substrate to buffering the volume changes in Sn-based anodes. We can conclude that binary metal sulfides supported by 3D polymer-based substrates have great potential for application as promising anode materials in future lithium-ion batteries (LIBs).