Structural and electrochemical characteristics of hierarchical Li4Ti5O12 as high-rate anode material for lithium-ion batteries

Wang, Hanyong; Wang, Lecai; Lin, Jiao; Yang, Jingbo; Wu, Feng; Li, Li; Chen, Renjie

doi:10.1016/j.electacta.2020.137470

Cited by 19 publications

(10 citation statements)

References 44 publications

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“…When the charging current rate was 75 mA g –1 , the specific cycle capacity of the battery was relatively high, and it can still stabilize at 185 mAh g –1 after 150 cycles (Figure c). The cyclic specific capacity is higher than CH 3 NH 3 PbBr 3 (121 mAh g –1 ), and slightly higher than the theoretical capacity of commercial Li 4 Ti 5 O 12 (172 mAh g –1 ). , The specific capacity of the battery is still stable at about 120 mAh g –1 after 500 cycles of charging and discharging with a current of up to 300 mA g –1 with almost 100% efficiency (Figure d).…”

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confidence: 51%

Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Yang

Liang

et al. 2022

J. Phys. Chem. Lett.

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Halide perovskite materials have been used in the field of lithium-ion batteries because of their excellent ion migration characteristics and defect tolerance. However, the current lead-based perovskites used for lithium-ion batteries are highly toxic, which may hinder the pace of further commercialization. Therefore, it is still necessary to develop a new type of stable and pollution-free perovskite anode material. Herein, we for the first time use a high-concentration lithium-ion doped rare-earth-based double perovskite Cs2NaErCl6:Li+ as the negative electrode material for a lithium-ion battery. Thanks to its excellent structure stability, the assembled battery also has high cycle stability, with a specific capacity of 120 mAh g–1 at 300 mA g–1 after 500 cycles with a Coulomb efficiency of nearly 100%. The introduction of a rare earth element in a lead-free double perovskite paves a new way for the development of novel promising anode materials in the field of lithium storage applications.

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confidence: 51%

Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Yang

Liang

et al. 2022

J. Phys. Chem. Lett.

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“…To further study the reaction kinetics of HLTO and LTO, cyclic voltammetry (CV) analysis at different scan rates from 0.2 mV s −1 to 5 mV s −1 was conducted. The first cycles of LTO and HLTO at 0.2 mV s −1 are displayed in Figure 6a,c, where both samples showed a pair of well-defined redox peaks at~1.5 V/1.65 V (vs. Li/Li + ), corresponding to the Li + insertion/desertion of Li 4 Ti 5 O 12 [11][12][13]. It should be pointed out that HLTO demonstrated higher peak intensities compared to LTO, suggesting that the presence of OVs would enhance the electrochemical processes during charge and discharge [50,51].…”

Section: Resultsmentioning

confidence: 99%

“…Recently, spinel Li 4 Ti 5 O 12 (LTO) has attracted a lot of attention as a deintercalation/intercalation anode material due to its high safety and long cycling stability, which is associated with its negligible volume variation (also known as "zero strain") during the Li + insertion/extraction process through the three-dimensional diffusion channels [10][11][12]. Meanwhile, LTO possesses a high operation voltage (1.55 V vs. Li/Li + ) that can, to some extent, avoid the formation of the solid electrolyte interphase (SEI) and Li dendrites.…”

Section: Introductionmentioning

confidence: 99%

Introducing Oxygen Vacancies in Li4Ti5O12 via Hydrogen Reduction for High-Power Lithium-Ion Batteries

Zhou

Xiao

et al. 2021

Processes

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Li4Ti5O12 (LTO), known as a zero-strain material, is widely studied as the anode material for lithium-ion batteries owing to its high safety and long cycling stability. However, its low electronic conductivity and Li diffusion coefficient significantly deteriorate its high-rate performance. In this work, we proposed a facile approach to introduce oxygen vacancies into the commercialized LTO via thermal treatment under Ar/H2 (5%). The oxygen vacancy-containing LTO demonstrates much better performance than the sample before H2 treatment, especially at high current rates. Density functional theory calculation results suggest that increasing oxygen vacancy concentration could enhance the electronic conductivity and lower the diffusion barrier of Li+, giving rise to a fast electrochemical kinetic process and thus improved high-rate performance.

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“…These progresses have been reviewed recently. 134,135 In the last 3 years, some novel structures like hierarchical pores, 136,137 nanoarray, 138 nanotubes formed by nanosheets, 139 and mesoporous structure were reported. 140 Growing nano-LTO structures directly on scaffolds like carbon nanotube (CNT), 141 Cu Co skeleton, 142 and graphene 143 can also obtain LTO with improved rate performance.…”

Section: Nanostructured Ltomentioning

confidence: 99%

Li₄Ti₅O₁₂ spinel anode: Fundamentals and advances in rechargeable batteries

Zhang

Yang

et al. 2021

InfoMat

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The Li4Ti5O12 (LTO) spinel material, ranking at the second large market share after graphite, is a promising anode material for lithium‐ion batteries due to its good cycle stability, rate capability, and safety with both conventional and low‐temperature electrolytes. However, several critical challenges, such as the low capacity and gassing issue, hindered the wide applications of LTO anode. Recent progress indicated that the LTO performances are possible to be further improved by novel strategies, such as heterogeneous phase control, surface engineering, or overlithiation. To rethink and develop advanced LTO anodes, this review intensively associates the performances and modification strategies with the electronics/crystal structures. From a thermodynamic/kinetic point of view, we summarized the data obtained from recently developed characterization techniques, and the results of electrochemical performances and fundamental structures of LTO to potentially address several key challenges and issues toward advanced LTO anodes. As a result, light is shed on the future research direction of the LTO anodes.image

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Structural and electrochemical characteristics of hierarchical Li4Ti5O12 as high-rate anode material for lithium-ion batteries

Cited by 19 publications

References 44 publications

Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Introducing Oxygen Vacancies in Li4Ti5O12 via Hydrogen Reduction for High-Power Lithium-Ion Batteries

Li₄Ti₅O₁₂ spinel anode: Fundamentals and advances in rechargeable batteries

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Structural and electrochemical characteristics of hierarchical Li4Ti5O12 as high-rate anode material for lithium-ion batteries

Cited by 19 publications

References 44 publications

Lead-Free Double Perovskite Cs2NaErCl6: Li+ as High-Stability Anodes for Li-Ion Batteries

Lead-Free Double Perovskite Cs2NaErCl6: Li+ as High-Stability Anodes for Li-Ion Batteries

Introducing Oxygen Vacancies in Li4Ti5O12 via Hydrogen Reduction for High-Power Lithium-Ion Batteries

Li4Ti5O12 spinel anode: Fundamentals and advances in rechargeable batteries

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Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Lead-Free Double Perovskite Cs₂NaErCl₆: Li⁺ as High-Stability Anodes for Li-Ion Batteries

Li₄Ti₅O₁₂ spinel anode: Fundamentals and advances in rechargeable batteries