Enhanced supercapacitive performance on TiO2@C coaxial nano-rod array through a bio-inspired approach

Tang, Haolin; Xiong, Ming; Qu, Deyu; Liú, Dan; Zhang, Zijuan; Xie, Zhipeng; Wang, Xi; Tu, Wenmao; Qu, Deyang

doi:10.1016/j.nanoen.2015.04.014

Cited by 68 publications

(31 citation statements)

References 60 publications

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“…A Warburg diffusion arises from the carriers diffuse through a thin medium or the diffusion path. In this case, the Li + diffusion course can be denoted by a finite‐length Warburg element with its finite Warburg impedance delivered as:

Ζω = ((), 1 - normali) normalσ ω^{- \frac{1}{2}} tanh ([], normalδ {(\frac{iω}{D})}^{\frac{1}{2}}),

when

K = \sqrt{\frac{2 δ^{2}}{D}} or D = \frac{2 δ^{2}}{K^{2}} = 2 δ^{2} K^{- 2},

where δ and D represent the effective diffusion thickness and diffusion coefficient of the nanoparticle. K −2 can be obtained by least square fitting of the AC impedance results.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

et al. 2019

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Summary A series of different α‐Fe2O3 nanoparticles composites containing different amounts of graphene coatings have been successfully prepared using a simple electrostatic self‐assembly (ESA) method. The structure and electrochemical properties of these α‐Fe2O3@graphene composites have been investigated. The α‐Fe2O3 nanoparticles composite containing 40 wt% graphene coating exhibits the highest specific capacity (385 mAh g−1) under 1000 mA g−1, resulting in superior cycle stability with no downward trend after 500 cycles. These results demonstrate that graphene coatings can be used to enhance the electrochemical properties and morphological stability of α‐Fe2O3 nanoparticles as anodic materials for high performance lithium‐ion batteries (LIBs). The low‐energy self‐assembly method employed in the paper has good potential for the broad‐scale preparation of other graphene‐modified materials because of its simplicity and the relatively low temperature conditions.

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Ζω = ((), 1 - normali) normalσ ω^{- \frac{1}{2}} tanh ([], normalδ {(\frac{iω}{D})}^{\frac{1}{2}}),

when

K = \sqrt{\frac{2 δ^{2}}{D}} or D = \frac{2 δ^{2}}{K^{2}} = 2 δ^{2} K^{- 2},

where δ and D represent the effective diffusion thickness and diffusion coefficient of the nanoparticle. K −2 can be obtained by least square fitting of the AC impedance results.…”

Section: Resultsmentioning

confidence: 99%

“…A Warburg diffusion arises from the carriers diffuse through a thin medium or the diffusion path. In this case, the Li + diffusion course can be denoted by a finite-length Warburg element with its finite Warburg impedance delivered as [60][61][62] :…”

Section: Resultsmentioning

confidence: 99%

Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

et al. 2019

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“…Polyaniline (PANi), one of the most frequently‐used electrode materials, is considered to be an ideal coating or scaffold for TMOs owing to its large theoretical pseudocapacitance that reaches 2000 F g −1 , relatively high electrical conductivity, good environmental stability, ease of synthesis, and low cost . More recently, one‐dimensional (1D) coaxial configurations have been demonstrated to possess multiple or enhanced functionalities resulting from the synergistic effects of each component . For instance, both MoO 3 /PANi and PANi/MnO 2 coaxial heterostructures show superior capacitive properties over the individual MoO 3 (MnO 2 ) or PANi .…”

Section: Introductionmentioning

confidence: 99%

Reactive Template Synthesis of Inorganic/Organic VO₂@Polyaniline Coaxial Nanobelts for High‐Performance Supercapacitors

Nie

Zhu

et al. 2017

ChemElectroChem

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Conducting polyaniline (PANi) is deposited in situ as a homogeneous shell on the monocrystalline VO 2 nanobelts by using a simple and facile reactive template strategy without the assistance of any surfactant for supercapacitor electrodes. The as-prepared VO 2 @PANi coaxial heterostructures show larger specific capacitance, better rate capability than the bare VO 2 nanobelts, and higher cycling stability than the HCl-doped PANi nanofibers in neutral electrolyte, owing to the synergetic contributions of the unique configuration and composition. These intriguing results can be extended to the synthesis of core/yolk-shell or hollow inorganic/organic functional nanostructures with various shapes by tuning the pH or reaction time, which have potential applications in energy storage, optoelectronic devices, environmental governance, and catalysis.

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“…[1,2] In this respect, they have been employed for photocatalytic water splitting and CO 2 reduction, [3,4] as supercapacitors, [3,5] as an electrode material for Li ion batteries, [6,7] and for biomedical applications. Due to their high stability,their electronic properties and their intrinsically high surface area, TiO 2 nanotube electrodes constitute av ersatile platform that has been applied for ar ange of surface-confined reactions.…”

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confidence: 99%

High Electromagnetic Field Enhancement of TiO₂ Nanotube Electrodes

et al. 2018

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We present the fabrication of TiO nanotube electrodes with high biocompatibility and extraordinary spectroscopic properties. Intense surface-enhanced resonance Raman signals of the heme unit of the redox enzyme Cytochrome b were observed upon covalent immobilization of the protein matrix on the TiO surface, revealing overall preserved structural integrity and redox behavior. The enhancement factor could be rationally controlled by varying the electrode annealing temperature, reaching a record maximum value of over 70 at 475 °C. For the first time, such high values are reported for non-directly surface-interacting probes, for which the involvement of charge-transfer processes in signal amplification can be excluded. The origin of the surface enhancement is exclusively attributed to enhanced localized electric fields resulting from the specific optical properties of the nanotubular geometry of the electrode.

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Enhanced supercapacitive performance on TiO2@C coaxial nano-rod array through a bio-inspired approach

Cited by 68 publications

References 60 publications

Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Reactive Template Synthesis of Inorganic/Organic VO₂@Polyaniline Coaxial Nanobelts for High‐Performance Supercapacitors

High Electromagnetic Field Enhancement of TiO₂ Nanotube Electrodes

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Enhanced supercapacitive performance on TiO2@C coaxial nano-rod array through a bio-inspired approach

Cited by 68 publications

References 60 publications

Enhanced performance of alpha‐Fe 2 O 3 nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Enhanced performance of alpha‐Fe 2 O 3 nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Reactive Template Synthesis of Inorganic/Organic VO2@Polyaniline Coaxial Nanobelts for High‐Performance Supercapacitors

High Electromagnetic Field Enhancement of TiO2 Nanotube Electrodes

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Product

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Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Enhanced performance of alpha‐Fe ₂ O ₃ nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

Reactive Template Synthesis of Inorganic/Organic VO₂@Polyaniline Coaxial Nanobelts for High‐Performance Supercapacitors

High Electromagnetic Field Enhancement of TiO₂ Nanotube Electrodes