A synergetic promotion of sodium-ion storage in titania nanosheets by superlattice assembly with reduced graphene oxide and Fe-doping strategy

Tian, Yu; Moreno, José Julio Gutiérrez; Lu, Ziheng; Li, Luyang; Hu, Mengni; Liu, Dongqing; Jian, Zelang; Cai, Xingke

doi:10.1016/j.cej.2020.127198

Cited by 22 publications

(14 citation statements)

References 49 publications

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“…In addition, the inconspicuous broad peak at 1.2 V mainly results from the reversible redox reaction that occurred from the deintercalation of Li + . We then consider the charge-storage mechanism by qualitatively analyzing the relationship in CV experiment between peak current,

, and scan rate,

, where a is the constant, and b stands for the power-law exponent [ 21 ]. Experimentally, the b value is 0.5 and 1 for the battery material and pseudocapacitive material, corresponding to a diffusion-controlled and capacitor-like process.…”

Section: Resultsmentioning

confidence: 99%

Nano-Graphite Prepared by Rapid Pulverization as Anode for Lithium-Ion Batteries

et al. 2022

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Reducing the particle size of active material is an effective solution to the poor rate performance of the lithium-ion battery. In this study, we proposed a facile strategy for the preparation of nano-graphite as an anode for a lithium-ion battery via the rapid mechanical pulverization method. It is the first time that diamond particle was selected as the medium to achieve high preparation efficiency and low energy consumption. The as-prepared nano-graphite with the size from 10 to 300 nm displays an intact structure and high specific surface area. The introduced oxygen atoms increased the wettability of nano-graphite electrode and lowered its polarization. The nano-graphite prepared from three hours of grinding shows an excellent reversible capacity of 191 mAh g−1, at a rate of 5 C, after 480 cycles, along with an increase of 86% in capacity, at 1 C, in comparison with pristine graphite. The highlight of this strategy is to optimize the current preparation method. The good electrochemical performance comes from the combined effect of nano-scale particle size, large specific surface area, and continuous mesopores.

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, and scan rate,

Section: Resultsmentioning

confidence: 99%

Nano-Graphite Prepared by Rapid Pulverization as Anode for Lithium-Ion Batteries

et al. 2022

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“…The Fe-doped nanosheets (Ti 0.6 Fe 0.4 O 2 ) were prepared by exfoliating layered titanate crystals according to literature reports. , The layered titanate crystals of K 0.4 Ti 0.6 Fe 0.4 Li 0.02 O 2 were prepared by calcination at 1100 °C for 24 h using the precursors. K 2 CO 3 , TiO 2 , Fe 2 O 3 , and Li 2 CO 3 in a molar ratio of 0.2:0.6:0.2:0.01 were used as the precursors.…”

Section: Methodsmentioning

confidence: 99%

Thin-Film Composite Membranes with a Hybrid Dimensional Titania Interlayer for Ultrapermeable Nanofiltration

Xue

Lin

et al. 2022

Nano Lett.

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The interfacial properties within a composite structure of membranes play a vital role in the separation properties and application performances. Building an interlayer can facilitate the formation of a highly selective layer as well as improve the interfacial properties of the composite membrane. However, it is difficult for a nanomaterial-based interlayer to increase the flux and retention of nanofiltration membranes simultaneously. Here, we report a nanofiltration membrane with a hybrid dimensional titania interlayer that exhibits excellent separation performance. The interlayer, composed of Fe-doped titania nanosheets and titania nanoparticles, helps the formation of an ultrathin (∼30 nm thick) and defect-free polyamide selective layer with an ideal nanostructure. The hybrid dimensional interlayer endows the membrane with a superior permeability and alleviates flux decline. In addition, the rigid interlayer framework on a PVDF support drastically improves the pressure resistance of nanofiltration membranes and shows negligible flux loss up to 1.5 MPa of pressure.

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“…Monolayer graphene sheets are oen used as one of the components to fabricate 2D superlattices for improving electron conductivity. 33,35,46,[93][94][95][96] The high-quality periodic alternate stacking of the single layers results in an electric charge redistribution at the 2D atomic interface, enhancing charge separation and transfer. Besides, the 2D superlattices can provide an enlarged interlayer distance and enhance the accessibility of active sites to Na ions, leading to a remarkably improved rate capability and charge storage capacity.…”

Section: Superlatticesmentioning

confidence: 99%

“…Besides, large volume change is another crucial issue for many alloyingtype and conversion-type anode materials, particularly for phosphorus and transition metal sulphides/phosphides. 43,44 Red phosphorus with a theoretical capacity of $2600 mA h g À1 suffers from a volume expansion of up to $400% aer full sodiation to form Na 3 P. 13 Strategies such as using nanotechnology to shorten Na ion diffusion pathways, 29,30,33,36 supporting electroactive materials on an electron-conductive support to improve electronic conductivity, 44,45 and heteroatom doping to enhance charge mobility 34,46 are oen used to improve electrode performance.…”

Section: Introductionmentioning

confidence: 99%

Surface engineering of anode materials for improving sodium-ion storage performance

Xia

Xin

2022

J. Mater. Chem. A

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A synergetic promotion of sodium-ion storage in titania nanosheets by superlattice assembly with reduced graphene oxide and Fe-doping strategy

Cited by 22 publications

References 49 publications

Nano-Graphite Prepared by Rapid Pulverization as Anode for Lithium-Ion Batteries

Nano-Graphite Prepared by Rapid Pulverization as Anode for Lithium-Ion Batteries

Thin-Film Composite Membranes with a Hybrid Dimensional Titania Interlayer for Ultrapermeable Nanofiltration

Surface engineering of anode materials for improving sodium-ion storage performance

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