2019
DOI: 10.1186/s10033-019-0374-2
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Mesoporous TiO2 Nanofiber as Highly Efficient Sulfur Host for Advanced Lithium–Sulfur Batteries

Abstract: Currently, lithium-sulfur batteries suffer from several critical limitations that hinder their practical application, such as the large volumetric expansion of electrode, poor conductivity and lower sulfur utilization. In this work, TiO 2 nanofibers with mesoporous structure have been synthesized by electrospinning and heat treating. As the host material of cathode for Li-S battery, the as prepared samples with novelty structure could enhance the conductivity of cathode composite, promote the utilization of su… Show more

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Cited by 18 publications
(9 citation statements)
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References 31 publications
(22 reference statements)
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“…Surface-enhanced Raman scattering (SERS), as a powerful spectral technology, has been widely used in the fields of chemistry, pharmaceuticals, biosensors, food detection, and environmental monitoring owing to its high sensitivity and fast response 1 3 . In general, the enhanced magnitude of SERS is associated with two mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…Surface-enhanced Raman scattering (SERS), as a powerful spectral technology, has been widely used in the fields of chemistry, pharmaceuticals, biosensors, food detection, and environmental monitoring owing to its high sensitivity and fast response 1 3 . In general, the enhanced magnitude of SERS is associated with two mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…The conductivities of S 8 and the insoluble Li 2 S charging and discharging products are poor, seriously affecting the redox reaction kinetics and battery power performance. 6,7 The dissolution of soluble intermediate lithium polysulfides (LiPSs) (Li 2 S n , 4 ≤ n ≤ 8) in the ether-based electrolyte will cause a serious "shuttle effect", resulting in irreversible loss of active material and low Coulomb efficiency. 8,9 Finally, after sulfur is converted into Li 2 S, a volume expansion of about 80% occurs, resulting in poor battery safety and low cycle stability.…”
Section: ■ Introductionmentioning
confidence: 99%
“…To meet the ever-increasing safety and high-capacity storage requirements prompted by advanced energy storage technologies in the future, the low-cost lithium–sulfur (Li–S) battery, due to its ultrahigh theoretical specific capacity (1675 mAh g –1 ) and excellent energy density (2600 Wh kg –1 ), has been considered as one of the most developed power generation devices for high-density energy storage. To reach the practical application standard in Li–S batteries, increasing the loading of active materials is essential. , However, Li–S battery cathodes have some inherent scientific problems. The conductivities of S 8 and the insoluble Li 2 S charging and discharging products are poor, seriously affecting the redox reaction kinetics and battery power performance. , The dissolution of soluble intermediate lithium polysulfides (LiPSs) (Li 2 S n , 4 ≤ n ≤ 8) in the ether-based electrolyte will cause a serious “shuttle effect”, resulting in irreversible loss of active material and low Coulomb efficiency. , Finally, after sulfur is converted into Li 2 S, a volume expansion of about 80% occurs, resulting in poor battery safety and low cycle stability . Moreover, the above problems are more prominent in high-load Li–S batteries .…”
Section: Introductionmentioning
confidence: 99%
“…The energy storage systems, especially for Li-ion batteries (LIBs), are increasingly important in commercial 3C (computer, communication, and consumer electronic) products, and new standards have been defined in the fields of electric/hybrid vehicles and industries with storage energy (Tarascon and Armand, 2001). As alternatives to LIBs, many attentions have been paid on the new energy storage devices (Shan et al, 2019), especially for sodium-ion batteries (SIBs), because of their similar potential closed to Li + and lower cost (Eguia-Barrio et al, 2017). The demand of stable electrode materials with low cost was mainly focused on various compounds, such as Na 3 V 2 (PO 4 ) 3 , Na 1.25 V 3 O 8 , and NaCrO 2 for cathode materials (Kim et al, 2012).…”
Section: Introductionmentioning
confidence: 99%