Robust electrochemistry of black TiO2 as stable and high-rate negative electrode for lithium-ion batteries

Patil, Shivaraj B.; Phattepur, Harish; Kishore, Brij; Viswanatha, Ranjani; Nagaraju, G.

doi:10.1007/s40243-019-0147-y

Cited by 21 publications

(8 citation statements)

References 76 publications

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“…It may be mentioned that the diffusion coefficients ( D ) depended on the conductivity of diffusion ionic species, the crystalline and porous nature of sample, and type of the electrolyte. The obtained D values were in good agreement with the reported one …”

Section: Resultssupporting

confidence: 91%

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sharma

Sarkar

Jha

et al. 2019

Int J Applied Ceramic Tech

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Nanoparticles of titanium dioxide were prepared using the sol-gel method without any impurity. Rietveld refinement of XRD data confirmed the anatase phase of synthesized nanoparticles with space group I4 1/ amd (141). XRD pattern revealed the crystalline nature of synthesized nanopowder. The average crystallite size of synthesized nanoparticles was calculated 7.5 nm. The electrochemical performance of synthesized TiO 2 nanopowder was investigated as working electrode. The electrochemical reaction was found diffusion-controlled as observed from cyclic voltammetry (CV) studies at different scan rates. The diffusion-controlled charge storage mechanism also confirmed by charge transfer resistance and Warburg impedance, as calculated from the EIS analysis. SEM micrograph showed the plate-like structure grown in cluster cloud of particles of synthesized TiO 2 nanocrystals. Absorbance and optical bandgap were obtained using UV-Vis spectra. De-convoluted PL spectra provided the emission pattern from the ultra-violet region to green region due to the presence of interstitial oxygen vacancies. The tune bandgap with EIS measurements of synthesized TiO 2 nanoparticles offers its potential application in energy storage devices and photovoltaic applications. K E Y W O R D SAnatase TiO 2 , CV studies, EIS, PL emission, X-ray diffraction

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Section: Resultssupporting

confidence: 91%

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sharma

Sarkar

Jha

et al. 2019

Int J Applied Ceramic Tech

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“…After 5000 cycling a slight increase in the R ct was observed, which indicates a slight deterioration in the kinetics of electron transfer across the material and the reactant after the cycling. 58 After all, the improved electronic conductivity and decreased charge transfer resistance observed in the B-TiZr-2.5 eventually lead to remarkable enhancement in the HER activity with remarkable stability of the final product.…”

Section: Resultsmentioning

confidence: 99%

TiO₂/ZrO₂ Nanoparticle Composites for Electrochemical Hydrogen Evolution

Singh

Shin

Lee

et al. 2020

ACS Appl. Nano Mater.

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Composites of different semiconductors are found to show much improved electronic conductivity and decreased charge transfer resistance. In this work, this hypothesis is tested by preparing composite heterostructures of chemically and structurally dissimilar and wide-bandgap semiconductors, titania (TiO2) and zirconia (ZrO2). Herein, the underpotential hydrogen generation ability of the composite nanoparticles is studied for the first time. The dissimilarity in coordination can create charge imbalance once the composite of these two materials is formed, which in turn can increase the surface acidity and the active sites for proton adsorption as proved through various analytical techniques. The composite of separately incompetent hydrogen evolution reaction (HER) catalysts shows improved HER activity due to improved charge transfer between the composite catalyst and reactant caused by the generation of the new electronic states. To improve the electronic conduction, we have performed the reduction of TiO2/ZrO2 binary metal oxide composite, which results in oxygen vacancies in the composite. The reduced counterpart of the composite is found to possess semimetallic properties and shows outstanding high stability and 7 times increase in HER current density at −0.6 V along with a very small overpotential of only ∼160 mV penalty to have a HER current density of 10 mA/cm2.

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“…These capacity results align with previous work on tin and titanium oxide anodes, which typically demonstrate capacity values between 150 and 250 mAh/g for TiO 2 (Refs. [7, 9–12, 16, 17, 54, 55]) and 400 and 800 mAh/g for SnO 2 (Refs. [20, 56–58]).…”

Section: Resultsmentioning

confidence: 99%

Growth of titania and tin oxide from Ti₂SnC via rapid thermal oxidation in air for lithium‐ion battery application

et al. 2023

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Herein, we report the synthesis of TiO2–SnO2–C/carbide hybrid electrode materials for Li‐ion batteries (LIBs) via two different methods of controlled oxidation of layered Ti2SnC. The material was partially oxidized in an open‐air furnace (OAF) or using a rapid thermal annealing (RTA) approach to obtain the desired TiO2–SnO2–C/carbide hybrid material; the carbide phase encompassed both residual Ti2SnC and TiC as a reaction product. We tested the oxidized materials as an anode in a half cell to investigate their electrochemical performance in LIBs. Analysis of the various oxidation conditions indicated the highest initial lithiation capacity of 838 mAh/g at 100 mA/g for the sample oxidized in the OAF at 700°C for 1 h. Still, the delithiation capacity dropped to 427 mAh/g and faded over cycling. Long‐term cycling demonstrated that the RTA sample treated at 800°C for 30 s was the most efficient, as it demonstrated a reversible capacity of around 270 mAh/g after 150 cycles, as well as a specific capacity of about 150 mAh/g under high cycling rate (2000 mA/g). Given the materials’ promising performance, this processing method could likely be applied to many other members of the MAX family, with a wide range of energy storage applications.

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Robust electrochemistry of black TiO2 as stable and high-rate negative electrode for lithium-ion batteries

Cited by 21 publications

References 76 publications

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

TiO₂/ZrO₂ Nanoparticle Composites for Electrochemical Hydrogen Evolution

Growth of titania and tin oxide from Ti₂SnC via rapid thermal oxidation in air for lithium‐ion battery application

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Robust electrochemistry of black TiO2 as stable and high-rate negative electrode for lithium-ion batteries

Cited by 21 publications

References 76 publications

Sol‐gel–mediated synthesis of TiO2 nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO2 nanocrystals: Structural, optical, and electrochemical properties

TiO2/ZrO2 Nanoparticle Composites for Electrochemical Hydrogen Evolution

Growth of titania and tin oxide from Ti2SnC via rapid thermal oxidation in air for lithium‐ion battery application

Contact Info

Product

Resources

About

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

TiO₂/ZrO₂ Nanoparticle Composites for Electrochemical Hydrogen Evolution

Growth of titania and tin oxide from Ti₂SnC via rapid thermal oxidation in air for lithium‐ion battery application