Nickel oxide decorated halloysite nanotubes as sulfur Host materials for lithium–sulfur batteries
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Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Lithium–sulfur batteries with high energy density still confront manychallenges, such as polysulfide dissolution, the large volume change of sulfur,and fast capacity fading in long-term cycling. Herein, a naturally abundantclay material, halloysite, is introduced as a sulfur host material in the cathodeof Li–S batteries. Nickel oxide nanoparticles are embedded into the halloysitenanotubes (NiO@Halloysite) by hydrothermal and calcination treatment toimprove the affinity of halloysite nanotubes to polysulfides. TheNiO@Halloysite composite loaded with sulfur (S/NiO@Halloysite) isemployed as the cathode of Li–S batteries, which combines the physicalconfinements of tubular halloysite particles and good chemical adsorptionability of NiO. The S/NiO@Halloysite electrode exhibits a high dischargecapacity of 1205.47 mAh g?1at 0.1 C. In addition, it demonstrates enhancedcycling stability, retaining?60% of initial capacity after 450 cycles at 0.5 C.The synthesized NiO@Halloysite can provide a promising prospect andvaluable insight into applying natural clay materials in Li–S batteries
Açıklama
Anahtar Kelimeler
Kaynak
Global Challenges
WoS Q Değeri
Scopus Q Değeri
Cilt
7
Sayı
7
Künye
Elibol, Meltem K., Jiang, L., Xie, D., Cao, S., Pan, X., Härk, E., Lu, Y. (2023). Nickel oxide decorated halloysite nanotubes as sulfur Host materials for lithium–sulfur batteries.
