Hydrothermal synthesis of Li4Ti5O12-TiO2 composites and Li4Ti5O12 and their applications in lithium-ion batteries

Zhang, Erwei; Zhang, Hailang

doi:10.1016/j.ceramint.2019.01.030

Cited by 32 publications

(11 citation statements)

References 44 publications

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“…LTO-A-R@C exhibited a superior rate performance, yielding discharge capacities of about 125, 119, and 95 mA h g –1 , which corresponded to 67%, 64%, and 51% capacity retentions, respectively, even after cycling at 500, 700, and 1000 mA g –1 , respectively. Notably, these electrochemical data of LTO-A-R@C are superior to those found in previously reported studies on LTO and various two-phase LTO-TO composites reported in the literature. ,− The impressive electrochemical performance of LTO-A-R@C can be explained as follows. First, a synergic combination of spinel LTO with TO phases ensured high structural stability, high specific capacity, and electrochemical safety in the composite .…”

Section: Results and Discussioncontrasting

confidence: 40%

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

Akhtar

Majumder

Chang

et al. 2022

ACS Sustainable Chem. Eng.

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Microwave-assisted hydrothermal synthesized carboncoated Li 4 Ti 5 O 12 −TiO 2 (anatase)−TiO 2 (rutile) (LTO-A-R@C) nanocomposites have been first reported as superior anode materials for Liion batteries. The structure of the as-synthesized material combines the advantages of nanosizing to reduce the diffusion distance, thin amorphous carbon coating to improve the electronic conductivity, plentiful grain boundaries to increase the structural stability, specific capacity, and reaction kinetics, and compositing between LTO and TiO 2 (TO) to offer high structural stability and high specific capacity. Thus, LTO-A-R@C can achieve excellent capacity retention over extended cycling and exhibits impressive rate performance at higher current density. In addition, a hybrid Li-ion battery (HLIB) composed of a unique electrode combination (LTO-A-R@C anode and Na 3 V 2 O 2 (PO 4 ) 2 F−Na 3 V 2 (PO 4 ) 3 @C (NVOPF-NVP@C) cathode) and 1 M LiPF 6 in ethylene carbonate (EC) + diethyl carbonate (DEC) electrolyte has been fabricated. The newly designed HLIB can achieve excellent cycling stability (97.5% capacity retention after 125 cycles) and good rate performance (37 mA h g −1 at 1000 mA g −1 ). The obtained HLIBs may offer lower energy density due mainly to the higher operating voltage of LTO-based anodes. However, the improved cycling stability and rate performance are sufficient to compensate for its main drawback of low energy density. In addition, LTO-based HLIBs will have unique merits in terms of overall safety because LTO-A-R@C operates inside the stable thermodynamic potential window of the commonly used organic electrolytes. Therefore, the preliminary electrochemical results suggest that this novel cell combination can be used to fabricate high-performance energy-storage devices with increased safety and stability.

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Section: Results and Discussioncontrasting

confidence: 40%

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

Akhtar

Majumder

Chang

et al. 2022

ACS Sustainable Chem. Eng.

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“…Spinel lithium titanate (Li 4 Ti 5 O 12 named as LTO) has a high theoretical capacity of 175 mAh g À 1 . [78][79][80] This oxide has a property of Zero strain upon Li intercalation-de-intercalation and has the stable working potential of 1.55 vs Li/Li + , which is higher than that for solid electrolyte interface (SEI) formation in an organic electrolyte (carbonate electrolyte). [80] However, LTO possesses low electrical conductivity (< 10 À 13 S cm À 1 ) and low lithium-ion diffusion coefficient (~10 À 15 cm 2 S À 1 ).…”

Section: Ti 5 O 12 Based Anode Materialsmentioning

confidence: 99%

Engineering of Battery Type Electrodes for High Performance Lithium Ion Hybrid Supercapacitors

et al. 2021

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mechanism (iii) and the alloying reaction mechanism. The lithium insertion reaction-based materials have high stability whereas less capacity and energy density. In contrast to this, the conversion type electrodes have high energy density but low stability. Alloying type materials have ultra-high energy density while very low stability and reversibility. Hence, for getting high performance LIC all above mentioned aspects are required to be considered.

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“…The conventional synthesis methods of LTO synthesis include solid‐state reaction synthesis, 8 sol–gel synthesis, 9 and hydrothermal synthesis, 10 all of which usually undergo an energy‐consuming and time‐consuming process and take time of more than 10 h at temperature of more than 800°C. Therefore, a fast and energy‐saving synthesis route for LTO is needed for large‐scale production.…”

Section: Introductionmentioning

confidence: 99%

Rapid synthesis of Li₄Ti₅O₁₂ as lithium‐ion battery anode by reactive flash sintering

et al. 2021

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In this work spinel Li4Ti5O12 (LTO) was successfully synthesized via flash sintering technique at a furnace temperature of 580°C within only 5 min for the first time. Phase evolution, microstructures, and electrochemical properties were investigated and compared with conventionally synthesized LTO. The flash sintered LTO shows good crystallinity, high purity, and small particle size. More importantly, it suggests that the flash sintering process could help inhibit lithium volatilization and control the particle size, which is vital to the improvement of the lithium‐ion diffusion process and battery performance. Compared with the conventionally synthesized samples, the flash sintered LTO exhibits higher specific capacities, better cycling stabilities, and rate capabilities. Therefore, flash sintering shows potentials in improving the electrochemical performance of anode materials, and thus suggests an efficient strategy for rapid synthesis of high‐performance anode materials for lithium‐ion batteries.

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Hydrothermal synthesis of Li4Ti5O12-TiO2 composites and Li4Ti5O12 and their applications in lithium-ion batteries

Cited by 32 publications

References 44 publications

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

Engineering of Battery Type Electrodes for High Performance Lithium Ion Hybrid Supercapacitors

Rapid synthesis of Li₄Ti₅O₁₂ as lithium‐ion battery anode by reactive flash sintering

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Hydrothermal synthesis of Li4Ti5O12-TiO2 composites and Li4Ti5O12 and their applications in lithium-ion batteries

Cited by 32 publications

References 44 publications

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li4Ti5O12–TiO2(A)–TiO2(R)@C Anode and Na3V2O2(PO4)2F–Na3V2(PO4)3@C Cathode

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li4Ti5O12–TiO2(A)–TiO2(R)@C Anode and Na3V2O2(PO4)2F–Na3V2(PO4)3@C Cathode

Engineering of Battery Type Electrodes for High Performance Lithium Ion Hybrid Supercapacitors

Rapid synthesis of Li4Ti5O12 as lithium‐ion battery anode by reactive flash sintering

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Product

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High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

High-Performance and Safe Hybrid Li-Ion Batteries Based on Li₄Ti₅O₁₂–TiO₂(A)–TiO₂(R)@C Anode and Na₃V₂O₂(PO₄)₂F–Na₃V₂(PO₄)₃@C Cathode

Rapid synthesis of Li₄Ti₅O₁₂ as lithium‐ion battery anode by reactive flash sintering