Iron Hexadecafluorophthalocyanine Nanoparticle/Porous Carbon Composites as Cathode Materials for Li-S Batteries
Xu, Zhanwei (Shaanxi University of Science and Technology)
Niu, Hang (Shaanxi University of Science and Technology)
Zhang, Ying (Shaanxi University of Science and Technology)
Chen, Siyu (Institut Català de Nanociència i Nanotecnologia)
Li, Wenyang (Shaanxi University of Science and Technology)
Li, Jiayin (Shaanxi University of Science and Technology)
Li, Liang (Shaanxi University of Science and Technology)
Shen, Xuetao (Shaanxi University of Science and Technology)

Data:	2024
Resum:	The shuttle behavior and sluggish conversion kinetics of polysulfides (LiPSs) significantly hinder sulfur utilization and cycle stability of lithium-sulfur (Li-S) batteries. Herein, iron hexadecafluorophthalocyanine (FePcF) nanoparticles were in situ tailored on oxidized apple pomace carbon (OAPC) with a 3D porous structure to construct a high-performance FePcF/OAPC sulfur host for advanced Li-S batteries. The designed FePcF nanoparticles have strong adsorption and catalytic conversion capabilities, which can reduce the redox reaction energy barrier, accelerate the conversion rate, and inhibit the LiPS shuttle. Meanwhile, the unique porous structure of OAPC effectively realizes the sulfur accommodation and rapid transport of substances. The average capacities of batteries with FePcF/OAPC were 926. 83, 847. 11, and 782. 63 mA h/g after 500 cycles at 1, 2, and 3C current densities, with capacity decay rates of only 0. 020%, 0. 031%, and 0. 043% per cycle, respectively. Furthermore, it delivers favorable cycling stability at a sulfur load of 4. 32 mg/cm.
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	FePcF16/OAPC ; 3D porous structural ; Tailor ; Stability ; Lithium-sulfur batteries
Publicat a:	ACS applied nano materials, Vol. 7, Issue 18 (September 2024) , p. 22052-22060, ISSN 2574-0970

DOI: 10.1021/acsanm.4c04071

Postprint 31 p, 2.1 MB

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