Preparation of Carbon Nanotube Coated Li4Ti5O12 Nanosheets Heterostructure as Ultrastable Anodes for Lithium-Ion Batteries

Jiao, Wenling; Chen, Chen; Liang, Chengyao; Che, Renchao

doi:10.1021/acsaem.8b01304

Cited by 18 publications

(5 citation statements)

References 38 publications

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“…FF(1.5CTAB 0.5PVP) shows the highest D Li , 2.87 * 10 −14 cm 2 s −1 , among all the materials. This further verifies that the hierarchical micro-nano structure promoted Li + diffusivity [44].…”

Section: )-(H)supporting

confidence: 72%

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Zeng

Chen

et al. 2021

Nanotechnology

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To prepare a hierarchical micro-nano structure FeF3·0.33H2O simply and economically, a one-pot method with dual surfactants was used. Scanning electron microscopy and a Fourier transformation infrared spectrometer revealed that polyvinyl pyrrolidone (PVP) regulates the morphology of the material, while cetyltrimethylammonium bromide (CTAB) can reshape FF@PVP, it can not only remove PVP at room temperature, but also obtain a hierarchical micro-nano structure. The electrochemical results show that the hierarchical micro-nano structure FF(1.5CTAB 0.5PVP) has the best electrochemical performance. It maintained a high specific capacity of 109.4 mAh g−1 after 100 cycles at 1 C. In particular, under the ultra-high rate discharge of 20 C, the ultra-high specific discharge capacity of 66.4 mAh g−1 was reached. The FF(1.5CTAB 0.5PVP)’s excellent electrochemical performance is mainly due to a large contact area between the electrolyte and active materials.

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Section: )-(H)supporting

confidence: 72%

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Zeng

Chen

et al. 2021

Nanotechnology

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“…Qiao's group successfully synthesized a novel hollow spheres assembled from N‐doped carbon‐coated ultrathin Na 2 Ti 3 O 7 nanosheets ( Figure ) . The as‐prepared sample exhibited the best rate performance ever reported, delivering more than 60 mA h g −1 after 1000 cycles at a high rate of 50 C. The reason was ascribed to the unique multilayer structure of nanosheets, which significantly reduced the energy consumption during the sodium diffusion process, along with the overall conductivity originating from carbon‐coated structure …”

Section: Ti‐based Oxides As Anode Materials For Sibsmentioning

confidence: 99%

Ti‐Based Oxide Anode Materials for Advanced Electrochemical Energy Storage: Lithium/Sodium Ion Batteries and Hybrid Pseudocapacitors

Lou

Zhao

Wang

et al. 2019

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140

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.201904740.Titanium-based oxides including TiO 2 and M-Ti-O compounds (M = Li, Nb, Na, etc.) family, exhibit advantageous structural dynamics (2D ion diffusion path, open and stable structure for ion accommodations) for practical applications in energy storage systems, such as lithium-ion batteries, sodium-ion batteries, and hybrid pseudocapacitors. Further, Ti-based oxides show high operating voltage relative to the deposition of alkali metal, ensuring full safety by avoiding the formation of lithium and sodium dendrites. On the other hand, high working potential prevents the decomposition of electrolyte, delivering excellent rate capability through the unique pseudocapacitive kinetics. Nevertheless, the intrinsic poor electrical conductivity and reaction dynamics limit further applications in energy storage devices. Recently, various work and in-depth understanding on the morphologies control, surface engineering, bulk-phase doping of Ti-based oxides, have been promoted to overcome these issues. Inspired by that, in this review, the authors summarize the fundamental issues, challenges and advances of Ti-based oxides in the applications of advanced electrochemical energy storage. Particularly, the authors focus on the progresses on the working mechanism and device applications from lithium-ion batteries to sodium-ion batteries, and then the hybrid pseudocapacitors. In addition, future perspectives for fundamental research and practical applications are discussed. www.advancedsciencenews.com

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“…The six electrodes all show a pair of redox peaks at nearly 1.55 V at a low sweep rate of 0.2 mV/s, which is associated well with the Li insertion/extraction mechanism in Li 4 Ti 5 O 12 . 39,40 With an increase in the scan rate, the intercalation potential shifts to lower potentials, indicating an electrochemically irreversible process. Furthermore, the potential gap (φ a − φ b ) between oxidation and reduction peaks is slightly different at a scanning sweep rate of 1.0 mV/s, which are 0.37, 0.41, 0.54, 0.56, 0.29, and 0.41 V for LTO-P25, LTO-AG, LTO-P25/LFP, LTO-AG/LFP, LTO-FL, and LTO-8602, respectively.…”

Section: T H Imentioning

confidence: 99%

Unveiling the Formation Mechanism and Phase Purity Control of Nanostructured Li₄Ti₅O₁₂ via a Hydrothermal Process

Dai

Manawan

et al. 2021

Crystal Growth & Design

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Although numerous efforts have been devoted to the spinal Li 4 Ti 5 O 12 anode material of lithium-ion batteries (LIBs), controllable synthesis of high-purity Li 4 Ti 5 O 12 nanoparticles under hydrothermal conditions has not yet been achieved. The current work systematically investigates the relationship between phase compositions of the Li−Ti−O system with the corresponding critical conditions. By determining the phase composition using the Rietveld refinement of XRD patterns, the relationship between key hydrothermal parameters and the resultant purity of Li 4 Ti 5 O 12 is revealed, and the formation mechanism of Li 4 Ti 5 O 12 using crystalline TiO 2 nanoparticles (Evonik Aeroxide P25, Hombikat 8602, and rutile TiO 2 ) and amorphous hydrous TiO 2 spheres (AHTS) as TiO 2 precursors in an aqueous LiOH solution is demonstrated accordingly. The hydrothermal process cannot generate Li 4 Ti 5 O 12 directly, while lithium titanium oxide intermediates (LTOIs), e.g., Li 2 TiO 3 and Li 2−x H x Ti 2 O 4 (OH) 2 , are obtained upon partial lithiation of crystalline or amorphous TiO 2 in the LiOH solution, respectively. Nanostructured TiO 2 @LTOIs can be formed since the underlying phase transition follows the classic in situ crystallization mechanism, as evidenced by the successful self-template synthesis using AHTS. Li 4 Ti 5 O 12 is formed by the solid-state reaction between the TiO 2 core and the LTOI shell at elevated temperatures (∼700 °C). At optimal conditions, the molar ratio of Li/Ti in all TiO 2 @LTOIs should be greater than a stoichiometric ratio of 4:5 since the solid-state reaction is found to promote the evaporation of lithium species. The comparative studies for the lithium storage properties of our assembled half-and full-cell LIBs demonstrate that the high phase purity of Li 4 Ti 5 O 12 enhances the electrochemical performances and that the spherical morphology delivers better cyclic stability.

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Preparation of Carbon Nanotube Coated Li₄Ti₅O₁₂ Nanosheets Heterostructure as Ultrastable Anodes for Lithium-Ion Batteries

Cited by 18 publications

References 38 publications

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Ti‐Based Oxide Anode Materials for Advanced Electrochemical Energy Storage: Lithium/Sodium Ion Batteries and Hybrid Pseudocapacitors

Unveiling the Formation Mechanism and Phase Purity Control of Nanostructured Li₄Ti₅O₁₂ via a Hydrothermal Process

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Preparation of Carbon Nanotube Coated Li4Ti5O12 Nanosheets Heterostructure as Ultrastable Anodes for Lithium-Ion Batteries

Cited by 18 publications

References 38 publications

Facile preparation of hierarchical micro-nano FeF3·0.33H2O by a one-pot method with dual surfactants

Facile preparation of hierarchical micro-nano FeF3·0.33H2O by a one-pot method with dual surfactants

Ti‐Based Oxide Anode Materials for Advanced Electrochemical Energy Storage: Lithium/Sodium Ion Batteries and Hybrid Pseudocapacitors

Unveiling the Formation Mechanism and Phase Purity Control of Nanostructured Li4Ti5O12 via a Hydrothermal Process

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Preparation of Carbon Nanotube Coated Li₄Ti₅O₁₂ Nanosheets Heterostructure as Ultrastable Anodes for Lithium-Ion Batteries

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Facile preparation of hierarchical micro-nano FeF₃·0.33H₂O by a one-pot method with dual surfactants

Unveiling the Formation Mechanism and Phase Purity Control of Nanostructured Li₄Ti₅O₁₂ via a Hydrothermal Process