Surface-controlled Nb2O5 nanoparticle networks for fast Li transport and storage

Kim, Kyungbae; Hwang, Junesun; Seo, Hyungeun; Kim, Han-Seul; Kim, Jae‐Hun

doi:10.1007/s10853-018-3010-0

Cited by 22 publications

(7 citation statements)

References 37 publications

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“…It is difficult to compare these results with literature as most reports only show rate sweeps and longer tests have only been carried out up to 5C. [3,30,35,38,[45][46][47][48][49] Our results far surpass those of Wu et al, who required a carbon composite configuration to achieve a capacity of only 5 mAhg -1 at 25 C after 200 cycles. [20] Our results are similar to those reported by Cheong et al who show ~100 mAhg -1 at 15C after 200 cycles and Wei et al who report 50 mAhg -1 at 50 C after 50 cycles.…”

Section: Fig 5 (Top) Galvanostatic Cycling Of As-synthesised Material...contrasting

confidence: 70%

Investigating the influence of synthesis route on the crystallinity and rate capability of niobium pentoxide for energy storage

Wheeler-Jones

Loveridge

Walton

2021

Electrochimica Acta

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Section: Fig 5 (Top) Galvanostatic Cycling Of As-synthesised Material...contrasting

confidence: 70%

Investigating the influence of synthesis route on the crystallinity and rate capability of niobium pentoxide for energy storage

Wheeler-Jones

Loveridge

Walton

2021

Electrochimica Acta

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“…T -Nb 2 O 5 has a layered structure in which the crystalline layers stack along the [001] direction, and the van der Waals gaps between (001) planes provide open, fast diffusion channels for ions to insert/de-insert. Such characteristics grant T -Nb 2 O 5 relatively good high-rate performance and acceptable capacity. , Nowadays, researchers have been utilizing the pseudocapacitive mechanism of T -Nb 2 O 5 to design EES materials with better electrochemical performance. − Lim et al combined Nb 2 O 5 @carbon nanoparticles and reduced graphene oxide (RGO) to fabricate a Nb 2 O 5 @C/RGO nanocomposite . When used as the anode material in Na + supercapacitors, Nb 2 O 5 @C/RGO-50 (the weight ratio of Nb 2 O 5 @C in this material is 50%) exhibited a capacity of ∼125 mA g –1 at 3 A g –1 (Figure a), and the overall energy density (∼76 Wh kg –1 ) and power density (∼21 kW kg –1 ) were impressive.…”

Section: Intrinsic Pseudocapacitive Materialsmentioning

confidence: 99%

Nanostructure and Advanced Energy Storage: Elaborate Material Designs Lead to High-Rate Pseudocapacitive Ion Storage

et al. 2022

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The drastic need for development of power and electronic equipment has long been calling for energy storage materials that possess favorable energy and power densities simultaneously, yet neither capacitive nor battery-type materials can meet the aforementioned demand. By contrast, pseudocapacitive materials store ions through redox reactions with charge/discharge rates comparable to those of capacitors, holding the promise of serving as electrode materials in advanced electrochemical energy storage (EES) devices. Therefore, it is of vital importance to enhance pseudocapacitive responses of energy storage materials to obtain excellent energy and power densities at the same time. In this Review, we first present basic concepts and characteristics about pseudocapacitive behaviors for better guidance on material design researches. Second, we discuss several important and effective material design measures for boosting pseudocapacitive responses of materials to improve rate capabilities, which mainly include downsizing, heterostructure engineering, adding atom and vacancy dopants, expanding interlayer distance, exposing active facets, and designing nanosheets. Finally, we outline possible developing trends in the rational design of pseudocapacitive materials and EES devices toward high-performance energy storage.

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“…47 – 52 . The Nb 2 O 5 formations can appear in spheroidal form, the so-called hollow spheres 47 – 49 . A good example is the work of Kong et al 47 , where hollow spheres were created by a hydrothermal method, in a few steps.…”

Section: Resultsmentioning

confidence: 99%

Thermal and optical properties of PMMA films reinforced with Nb2O5 nanoparticles

Hajduk

Bednarski

Jarka

et al. 2021

Sci Rep

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The article presents the thermal and physical properties of PMMA composite films with the addition of Nb2O5 nanoparticles. The addition of nanoparticles to PMMA mainly influenced the optical transmission and glass transition temperature of composite films compared to pure PMMA. It is clearly visible in the results of the conducted ellipsometric and differential scanning calorimetry tests. X-ray studies showed that the heat treatment of the samples resulted in the ordering of the polymer structure (flattening of the polymer chains). Examining the surface of the samples with scanning electron microscopy, it can be seen that Nb2O5 nanoparticles formed unusual, branched formations resembling "snowflakes".

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Surface-controlled Nb2O5 nanoparticle networks for fast Li transport and storage

Cited by 22 publications

References 37 publications

Investigating the influence of synthesis route on the crystallinity and rate capability of niobium pentoxide for energy storage

Investigating the influence of synthesis route on the crystallinity and rate capability of niobium pentoxide for energy storage

Nanostructure and Advanced Energy Storage: Elaborate Material Designs Lead to High-Rate Pseudocapacitive Ion Storage

Thermal and optical properties of PMMA films reinforced with Nb2O5 nanoparticles

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