Three-Dimensionally Ordered Macroporous Li4Ti5O12:  Effect of Wall Structure on Electrochemical Properties.

Sorensen, Erin M.; Barry, Scott J.; Jung, Ha Kyun; Rondinelli, James R.; Vaughey, John T.; Poeppelmeier, Kenneth R.

doi:10.1021/cm0604054

Cited by 30 publications

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“…The octahedral (16c) sites are empty. Theoretically, a maximum of 3 lithium ions per formula unit can be accommodated in Li 4 Ti 5 O 12 fully occupying the 16c sites, with theoretical capacity of 175 mA h g -1 , when discharged to 1 V. 5 In Liintercalated Li 7 Ti 5 O 12 structure the additional three Li atoms occupy the octahedral (16c) sites. Besides, the tetrahedral (8a) Li atoms also move to the octahedral (16c) sites.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V

et al. 2016

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composite were prepared by sol-gel method with average particle size of 1 µm, 0.3 µm and 0.4 µm, respectively. Though Li 2 TiO 3 is electrochemically inactive, the rate capability of in 0−3 V range exhibit two anodic peaks at 1.51 V and 0.7−0.0 V, indicating two modes of lithium intercalation into the lattice sites of active material. Owing to enhanced intercalation/de-intercalation kinetics in 0−3 V, composite electrode delivers superior rate performance of 203 mAh/g at 2.85 C and 140 mAh/g at 5.7 C with good reversible capacity retention over 100 cycles. INTRODUCTIONRechargeable lithium-ion batteries are a promising energy source over other traditional rechargeable battery systems due to high output voltage, large energy density and being environment friendly. Li 4 Ti 5 O 12 has attracted widespread attention as anode material in high power lithium-ion rechargeable batteries and hybrid super capacitors owing to their good cyclability, safety at high current rates and long cycle life.1-2 It bears excellent cyclability with

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Section: Introductionmentioning

confidence: 99%

Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V

et al. 2016

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“…As a result, many researches mainly concentrate on morphology tailoring, size control, surface modification and ion doping to improve the rate capability of LTO materials [5][6][7][8][9][10]. In our previous work, we had synthesized nano-size of Li 4 Ti 5 O 12 /C composite with the average particle size of 70 nm [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electrochemical performance of F-doped Li4Ti5O12 for lithium-ion batteries

Zhao

et al. 2013

Electrochimica Acta

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“…The two crystal structures are illustrated in Fig. 1 [11]. The structural transformation generates only a slight lattice contraction, from 8.3595 Å to 8.3538 Å [9] for Li 4 Ti 5 O 12 and Li 7 Ti 5 O 12 , respectively, corresponding to a volume shrinkage of about 0.2 %.…”

Section: Lattice Structure and Electrochemical Characteristicsmentioning

confidence: 99%

Lithium Titanate-Based Anode Materials

Zhao

2015

Rechargeable Batteries

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Graphitic carbon is the most widely used anode material in commercial Li-ion batteries due to its low lithiation potential, long cycle life, abundant resources and low cost. However, Li-ion batteries using graphite as anode material give rise to rate, safety and life problems. During lithium intercalation/deintercalation process, graphite undergoes a considerable volume change (*10 % [1]), which could cause particle cracking and even peeling off of anode film from the current collector, leading to gradual capacity degradation of the electrode [2,3]. Safety concerns arise when the cells experience fast charging, long-term cycling, or low temperature charging owing to the propensity of formation of lithium dendrites, which is induced by the low lithiation potential of the graphite anode (close to 0 V vs. Li/Li + ) and the low lithium ion diffusivity in the graphite lattice [4,5]. As an alternative anode material to carbon, Li 4 Ti 5 O 12 has been extensively studied for the potential use in large-scale Li-ion batteries. Li 4 Ti 5 O 12 shows stable charge/discharge platform at ca. 1.55 V versus Li/Li + , and possesses excellent cycling stability and unique safety characteristic owing to its negligible volume change and high redox potential upon Li-ion intercalation/deintercalation. However, coarse Li 4 Ti 5 O 12 exhibits poor rate performance because of its low electronic conductivity and sluggish lithium ion diffusivity [6,7]. In some cases, especially when aging at elevated temperature or cycling in a long-term regime, gas generation frequently occurs in Li 4 Ti 5 O 12 -based batteries [8]. In past decades, many efforts have been devoted to overcoming these problems and significant advancements have been achieved, which make Li 4 Ti 5 O 12 viable for practical application in batteries for various electrical energy storage, such as electric/hybrid electric/plug-in hybrid electric vehicles (EV/HEV/PHEV), grid load leveling, integration of renewable energy sources, etc.

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Three-Dimensionally Ordered Macroporous Li₄Ti₅O₁₂: Effect of Wall Structure on Electrochemical Properties.

Cited by 30 publications

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Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V

Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V

Synthesis and electrochemical performance of F-doped Li4Ti5O12 for lithium-ion batteries

Lithium Titanate-Based Anode Materials

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Three-Dimensionally Ordered Macroporous Li4Ti5O12: Effect of Wall Structure on Electrochemical Properties.

Cited by 30 publications

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Electrochemical Characteristics and Li+ Ion Intercalation Kinetics of Dual-Phase Li4Ti5O12/Li2TiO3 Composite in the Voltage Range 0–3 V

Electrochemical Characteristics and Li+ Ion Intercalation Kinetics of Dual-Phase Li4Ti5O12/Li2TiO3 Composite in the Voltage Range 0–3 V

Synthesis and electrochemical performance of F-doped Li4Ti5O12 for lithium-ion batteries

Lithium Titanate-Based Anode Materials

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Three-Dimensionally Ordered Macroporous Li₄Ti₅O₁₂: Effect of Wall Structure on Electrochemical Properties.

Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V

Electrochemical Characteristics and Li⁺ Ion Intercalation Kinetics of Dual-Phase Li₄Ti₅O₁₂/Li₂TiO₃ Composite in the Voltage Range 0–3 V