TiNb2O7-Keratin derived carbon nanocomposites as novel anode materials for high-capacity lithium-ion batteries

Thiyagarajan, Ganesh Babu; Shanmugam, Vasu; Wilhelm, Michael; Mathur, Sanjay; Sahana, M.; Kumar, Rakesh

doi:10.1016/j.oceram.2021.100131

Cited by 8 publications

(9 citation statements)

References 45 publications

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“…[21][22][23][24] Thiyagarajan et al described a Ragone chart for comparing the rate capabilities of these materials. 25 TiNb 2 O 7 /C composites exhibit excellent result in comparison to the doped materials. Therefore, the majority of the earlier research studies are based on the development of TiNb 2 O 7 /carbon composites that used CNT, graphene, and graphene oxide as carbon sources, which, in addition to being expensive, need difficult preparation processes that limit their potential for usage in LIBs.…”

Section: Introductionmentioning

confidence: 96%

“…Therefore, the majority of the earlier research studies are based on the development of TiNb 2 O 7 /carbon composites that used CNT, graphene, and graphene oxide as carbon sources, which, in addition to being expensive, need difficult preparation processes that limit their potential for usage in LIBs. [21][22][23][24][25][26] Although high electrical and ionic conductivities caused by the presence of carbon in TiNb 2 O 7 /carbon composites help LIBs function better, the importance of nanostructuring in improving electrochemical performance and conversion efficiency cannot be ignored. However, the fabrication of nanosized TiNb 2 O 7 without aggregation usually requires the use of templates.…”

Section: Introductionmentioning

confidence: 99%

“…Thiyagarajan et al. described a Ragone chart for comparing the rate capabilities of these materials 25 . TiNb 2 O 7 /C composites exhibit excellent result in comparison to the doped materials.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route

et al. 2022

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TiNb 2 O 7 materials were synthesized via a microwave-assisted microemulsion technique and a conventional solid-state reaction route. Microwave-assisted microemulsion process produced TiNb 2 O 7 powders with small particle sizes (50-100 nm) and increased surface area (22.4 m 2 /g) in comparison to the samples synthesized from solid-state method. Micelles in the microemulsion acted as nano-reactors and confined the grain growth of TiNb 2 O 7 . The microwaveassisted microemulsion-derived TiNb 2 O 7 powders presented a high discharge capacity of 333.2 mAh/g at 0.1C. The materials also delivered 94.8% retention at 5C after 100 cycles. The solid-state derived samples only processed the 283.2-mAh/g discharge capacity at 0.1C with 83.2% retention at 5C after 100 cycles. The amended capacity and cyclability of microwave-assisted microemulsionderived TiNb 2 O 7 resulted from the augmented Li + diffusion and the diminished charge transfer resistance. It was also found that the microwave-assisted microemulsion-derived TiNb 2 O 7 delivered 208 mAh/g discharge capacity at 10C, which was higher than solid-state derived samples (92 mAh/g). The improved capacity was owing to the enhancement in pseudocapacitive contribution.Present research indicated that the microwave-assisted microemulsion method effectively enhanced the electrochemical performance of TiNb 2 O 7 powders.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route

et al. 2022

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“…Lithium-ion batteries (LIBs) are popular energy storage devices compared to other battery technologies mainly due to their high operating voltages that generally translate to high energy density. 4 However, the increasing need for low-cost, safe, and longer lasting LIBs with ever higher energy and power density has prompted research to develop novel electrode materials, electrolytes and manufacturing processes. Owing to decade long rigorous research, several different cathode materials are now in use for commercial LIBs.…”

Section: Introductionmentioning

confidence: 99%

Single source precursor‐derived SiOC/TiOxCy as an anode component for Li‐ion batteries

Vendra

Singh

Kumar

2022

Int J Applied Ceramic Tech

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Amorphous silicon oxycarbides are known to be an effective anode material for lithium‐ion batteries. Despite their exceptional properties and high charge capacities, however, their practical uses are limited by their significant first‐cycle loss, considerable hysteresis, and low cyclic ability. Comparatively, SiOC/metal oxide materials have demonstrated increased rate capability and cyclic stability. This study utilized a liquid precursor‐derived ceramic method to modify SiOC with titanium (IV) butoxide precursor to synthesize SiOC/TiOxCy. X‐ray diffractograms confirmed the amorphous nature of SiOC/TiOxCy. The elemental composition and bonding properties were investigated using X‐ray photoelectron spectroscopy, and electron microscopy was used to explore morphological features. In the first cycle, the reversible capacity of pyrolyzed SiOC/TiOxCy was 520 mAh g−1, which then increased to 736 mAh g−1 for the 1200°C annealed SiOC/TiOxCy due to the increased free carbon network and TiC conductive phases. The irreversible capacity of the first cycle was 568 mAh g−1, which was lower than the annealed SiOC irreversible capacity of 695 mAh g−1. Interestingly, the rate stability of the pyrolyzed SiOC/TiOxCy performed more stability than the annealed sample. Localized carbothermal reactions between amorphous SiOC/TiOxCy and free carbon at annealing temperatures resulted in loss of structure stability.

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“…Carbon coating is considered to be an effective way to address poor conductivity to enhance the electrochemical performance. In previous literature, the research on carbon source for carbon coating mainly comes from heteroatomdoped carbon (Yang et al, 2021a;Yang et al, 2021b), biomass carbon (Thiyagarajan et al, 2021), CNT (Lin et al, 2018;Zhu et al, 2022), and graphene (Ashish et al, 2015;Li et al, 2016;Liu et al, 2021b). For instance, Shaijumona et al (Ashish et al, 2015) obtained TiNb 2 O 7 /graphene composited by simple solvothermal process, which realized TNO nanoparticles anchored on the reduced graphene oxide.…”

Section: Introductionmentioning

confidence: 99%

Facile Construction of Hierarchical TiNb2O7/rGO Nanoflower With Robust Charge Storage Properties for Li Ion Batteries via an Esterification Reaction

Yang

Chen

et al. 2021

Front. Energy Res.

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TiNb2O7 (TNO) compound has been pursued tremendously due to its high theoretical capacity, high potential, and excellent cycle stability. Unfortunately, an intrinsic low electronic and ionic conductivity feature has restricted its broad applications in electrochemical energy storage fields. Two-dimensional (2D) nanostructures can effectively shorten Li-ion transport path and enhance charge transfer. Here, hierarchical structure TNO was constructed by using ethanol and acetic acid as particularly important organic chemicals of basic raw materials via a simple solvothermal reaction. Ethanol was found to play a critical role in the formation of 2D sheet structure. Meantime, reduced graphene oxide nanosheets can effectively improve electronic conductivity. As-obtained TiNb2O7 were wrapped further by graphene oxide nanosheets through a flocculation process. Their unique structure is beneficial to the final electrochemical performance. This study not only provides a general approach for the design of novel 2D nanomaterials wrapped by graphene because of the advantage of esterification reaction and flocculation reaction, but also improves the electronic and ionic conductivity simultaneously.

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TiNb2O7-Keratin derived carbon nanocomposites as novel anode materials for high-capacity lithium-ion batteries

Cited by 8 publications

References 45 publications

Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route

Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route

Single source precursor‐derived SiOC/TiOxCy as an anode component for Li‐ion batteries

Facile Construction of Hierarchical TiNb2O7/rGO Nanoflower With Robust Charge Storage Properties for Li Ion Batteries via an Esterification Reaction

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TiNb2O7-Keratin derived carbon nanocomposites as novel anode materials for high-capacity lithium-ion batteries

Cited by 8 publications

References 45 publications

Electrochemical characterization of TiNb2O7 as anode material synthesized using microwave‐assisted microemulsion route

Electrochemical characterization of TiNb2O7 as anode material synthesized using microwave‐assisted microemulsion route

Single source precursor‐derived SiOC/TiOxCy as an anode component for Li‐ion batteries

Facile Construction of Hierarchical TiNb2O7/rGO Nanoflower With Robust Charge Storage Properties for Li Ion Batteries via an Esterification Reaction

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Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route

Electrochemical characterization of TiNb₂O₇ as anode material synthesized using microwave‐assisted microemulsion route