Novel composite materials H.sub.2V.sub.3O.sub.8/PEDOT:PSS as a promising cathode material for rechargeable lithium-ion batteries

Owing to the high demand for electronic devices and electric vehicles, a huge effort has been directed to the exploration and development of new batteries with good cycling stability, satisfactory high specific capacity and safety. In this paper, we report the designed synthesis of the vanadium oxid...

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Bibliographic Details
Published in:Journal of materials science 2023-03, Vol.58 (10), p.4565
Main Authors: Moulahi, Ali, Maatoug, Samah, Janene, Fatma, Nasroui, Ibrahim, Alsherari, Sahr A, Ibrahim, Mohamed Abdefattah, Al-Marri, Abdulhadi H
Format: Article
Language:English
Subjects:
Automobiles, Electric
Batteries
Electric properties
Electrical conductivity
Online Access:Get full text
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Summary:Owing to the high demand for electronic devices and electric vehicles, a huge effort has been directed to the exploration and development of new batteries with good cycling stability, satisfactory high specific capacity and safety. In this paper, we report the designed synthesis of the vanadium oxide with mixed valence H.sub.2V.sub.3O.sub.8 and the composite H.sub.2V.sub.3O.sub.8/PEDOT:PSS using low cost and easy hydrothermal method. Electrochemical activity of the vanadium oxyhydroxide H.sub.2V.sub.3O.sub.8 and the composite H.sub.2V.sub.3O.sub.8/PEDOT:PSS as cathodes materials for high performance lithium-ion batteries was evaluated vs. Li.sup.+/Li at various current rates. Compared with pure H.sub.2V.sub.3O.sub.8, composite H.sub.2V.sub.3O.sub.8/PEDOT:PSS cathode exhibits higher specific capacity (390 mAh g.sup.-1 at 0.05 A g.sup.-1 whereas, an initial discharge capacity of 300 mAh g.sup.-1 is observed at 0.3 A g.sup.-1), more excellent rate performance and longer cycle life. The composite H.sub.2V.sub.3O.sub.8/PEDOT:PSS cathode delivers excellent specific capacity of ca. 390 mAh g.sup.-1 and a 97.5% capacity retention are achieved even after 350 cycles at current density of 0.05 A g.sup.-1. Higher electrochemical capacity and stability of the new composite cathode are mainly ascribed to a cooperative effect between the conductive polymer (PEDOT:PSS) with good electrical conductivity and the unique nano-sized H.sub.2V.sub.3O.sub.8 rods with short diffusion pathway for lithium ions diffusion.
ISSN:0022-2461
DOI:10.1007/s10853-023-08301-0