Electrochemistry of sodium titanate nanotubes as a negative electrode for sodium-ion batteries

Leite, Marina; Martins, Vitor L.; Vichi, Flávio Maron; Torresi, Roberto M.

doi:10.1016/j.electacta.2019.135422

Cited by 27 publications

(12 citation statements)

References 46 publications

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“…They have a high number of defined peaks; 28 vibrational modes per spectrum. These characteristics suggest a better crystallinity and larger particle sizes compared to the sodium titanate nanostructures reported in the literature, with few broad bands in their Raman spectra [23][24][25][26][27] . The determination of the number of modes, as well as their respective Raman shifts in cm -1 , was carried out through the adjustment with oscillator curves in the Igor Pro analysis program (Figure 3).…”

Section: Characterization By Raman Spectroscopymentioning

confidence: 61%

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

et al. 2021

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This study processed and characterized the biphasic ceramics Na 2 Ti 3 O 7 /Na 2 Ti 6 O 13 that were obtained from semi-crystalline nanoparticles synthesized using sonochemical methods. Structural characterization techniques, such as X-ray diffraction and Raman spectroscopy, were used to identify the crystalline phases present. The Rietveld refinement revealed, among other structural parameters, the presence of two crystalline phases in compositions of 55.90% and 44.10% for sodium hexatitanate and trititanate, respectively. Via Raman spectroscopy, the presence of the main vibrational modes that correspond to the phases present in biphasic ceramics was confirmed. Finally, by using complex impedance spectroscopy, a decrease in the electrical resistance of both the grain (10 6 Ω-10 4 Ω) and its boundary (10 8 Ω -10 5 Ω) under increasing temperature was identified.

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Section: Characterization By Raman Spectroscopymentioning

confidence: 61%

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

et al. 2021

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“…This potential value is comparable with others SIB negative materials such as titanates, TiO 2 , and conversion electrodes. [13] The average voltage is attributed to the electronic structure of the materials, as discussed in the DFT section.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Functional Properties of Ti₃C₂T_x MXenes as Negative Electrodes in Sodium‐Ion Batteries by Chemical Tuning

et al. 2020

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The large implementation of electrochemical energy storage devices requires the development of new chemistries tailored for specific uses. Sodium‐ion batteries (SIBs) can cover different application fields, however the state‐of‐the‐art negative material, hard carbon, suffers from poor cyclability and rate capability. MXenes are a vast class of 2D‐materials of the general formula Mn+1XnTx (M = transition metal, X = C or N, and T = M‐terminating group) with peculiar structural features able to reversible intercalate chemical species, such as alkaline cations. The MXene compound Ti3C2Tx is one of the most investigated, thanks to the easy preparation route by etching of the pristine compound Ti3AlC2. In this work, the effect of the etching conditions and of the postsynthesis thermal treatments on the chemical, morphological, and structural properties of Ti3C2Tx are investigated, and in turn the correlation between its features and the functional properties as negative materials in SIBs are studied. The Ti3C2Tx obtained in high hydrofluoric concentration and after a 300 °C thermal treatment shows 110 mAh g−1 at 30 mA g−1 with an average potential of 1.33 V versus Na+/Na, 100% and good rate capability, since it is still able to deliver 73 mAh g−1 at 1500 mA g−1.

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“…31-1329). The Raman spectrum confirmed that the NTO@MXene composite showed typical peaks at 654 and 277 cm –1 , which related to the stretching vibrations of the Ti–O–Na bond and the Ti–O–Ti bond, respectively (Figure b). ,, The peaks at 145, 194, and 436 cm –1 were assigned to the Ti–O band stretching vibrations and TiO 6 octahedron vibrations. , …”

Section: Resultsmentioning

confidence: 68%

“…Figure S3a shows the CV data of the NTO@MXene electrode for the first five cycles within a voltage window of 0.01–3.0 V with a sweep rate of 0.1 mV s –1 . The insertion of lithium ions into the NTO nanosheets results in a wide strong peak at around 1.17 V in the initial cathodic sweep, which moves to a lower voltage of 0.6 V in subsequent scans. ,, The prominent cathodic peak around 0.64 V can be commonly ascribed to forming a solid electrolyte interface (SEI) film on the surface of the composites. A large peak at 1.31 V is attributed to Li + extraction behavior from the NTO nanosheets during the succeeding anodic sweep, which breaks down into two adjoining weak peaks located at 1.19 and 1.34 V in later scans, showing the step-by-step of Li + extraction .…”

Section: Resultsmentioning

confidence: 99%

“…24,31,32 The peaks at 145, 194, and 436 cm −1 were assigned to the Ti− O band stretching vibrations and TiO 6 octahedron vibrations. 33,34 The nitrogen adsorption−desorption isotherms were used to calculate the Brunauer−Emmett−Teller specific surface areas (SSA) of the composites. As shown in Figure 3c, the SSA of MXene, NTO, and the NTO@MXene composite were 13.69, 41.53, and 18.38 m 2 g −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

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Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

Luo

Zhao

et al. 2022

J. Phys. Chem. C

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MXenes have shown great promise in high-efficiency energy storage on account of superior electrical conductivity and outstanding mechanical properties. However, the practical applications of MXenes in electrochemical energy storage are limited by layer restacking and surface oxidation issues. Herein, a unique sandwich-like Na 2 Ti 3 O 7 nanosheet/ Ti 3 C 2 MXene composite (NTO@MXene) with an expanded interlayer spacing of MXene has been fabricated by one-step simultaneous alkalization and oxidation. The NTO@MXene with a unique structure shortens the ion diffusion distance and promotes electrolyte infiltration, which is favorable for high-performance rechargeable batteries. As a result, the NTO@MXene composite as an anode electrode for lithium-ion batteries delivered exceptional rate performance (159 mAh g −1 at 4 A g −1 ) and long-life cycling performance (capacity retention of nearly 100% at 4 A g −1 after 1200 cycles). When used as a sodium-ion battery anode, the electrode also achieved an extraordinary capacity of 103 mAh g −1 at 0.1 A g −1 and an exceptional capacity retention of 70% at a high current density of 2 A g −1 after 3000 cycles.

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Electrochemistry of sodium titanate nanotubes as a negative electrode for sodium-ion batteries

Cited by 27 publications

References 46 publications

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

Enhanced Functional Properties of Ti₃C₂T_x MXenes as Negative Electrodes in Sodium‐Ion Batteries by Chemical Tuning

Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

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Electrochemistry of sodium titanate nanotubes as a negative electrode for sodium-ion batteries

Cited by 27 publications

References 46 publications

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

Sonochemical Synthesis and Characterization of the Biphasic Compound Na2Ti3O7/ Na2Ti6O13

Enhanced Functional Properties of Ti3C2Tx MXenes as Negative Electrodes in Sodium‐Ion Batteries by Chemical Tuning

Sandwich-like Na2Ti3O7 Nanosheet/Ti3C2 MXene Composite for High-Performance Lithium/Sodium-Ion Batteries

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Enhanced Functional Properties of Ti₃C₂T_x MXenes as Negative Electrodes in Sodium‐Ion Batteries by Chemical Tuning

Sandwich-like Na₂Ti₃O₇ Nanosheet/Ti₃C₂ MXene Composite for High-Performance Lithium/Sodium-Ion Batteries