Li5Cr9Ti4O24: A new anode material for lithium-ion batteries

Lin, Chunfu; Deng, Shengjue; Shen, Hong; Wang, Guizhen; Li, Yanfang; Yu, Lei; Lin, Shisheng; Li, Jianbao; Li, Lü

doi:10.1016/j.jallcom.2015.08.070

Cited by 22 publications

(3 citation statements)

References 46 publications

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“…To demonstrate the unique high lithium-ion diffusion coefficient in our NiNb 2 O 6 material, a comparison with other high rate anode materials is shown in Table S3, Supporting Information. Fast charging bulk materials, such as titanium-and niobium-based oxides, typically exhibit one or two orders of magnitude lower lithium-ion diffusion coefficients (10 −13 -10 −14 cm 2 s −1 ), [18][19][20]35,[41][42][43][44] while only nanosizing Nb 8 W 9 O 47 down to 50 nm wide nanowires has yielded similar values of about 10 −12 cm 2 s −1 . [20]…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Xia

Zhao

Kuo

et al. 2021

Advanced Energy Materials

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Nowadays, fast charging ability of energy storage devices is essential for applications in electric vehicles and electrical power grids. The fast charging performance of batteries is enabled by highrate electrode materials. which have been realized through various methods such as nanosizing, porous structures, carboncoatings, and conductive materials-based hierarchical structures. [1] Nanosizing and porous structures can enhance the lithium-ion transport as they reduce the distance lithium ions have to diffuse in the solid electrode, and they also enlarge the contact area between the liquid electrolyte and the electrode material. [2] Carbon-coatings and conductive materials (e.g., graphene or Mxene) based hierarchical structures can enhance the electrical conductivity of the electrodes to enable higher current densities. [3] However, nanosizing and porous structures lead to a reduction of the specific volumetric capacity, while composites with carbon-based conductive materials require the electrode to discharge down to 0.01 V resulting in lithium dendrite formation under high current densities. [4][5][6] The formation of nanostructures can even result in a reduced electrochemical performance at high C rates as compared to their bulk materials due to possible morphology change, nanostructure collapse, and higher first-cycle capacity loss. [7][8][9] Furthermore, the fabrication of these delicate nano-architectures, porous structures, and composites usually require harsh synthesis environments, expensive reactants, and multiple synthesis steps, which results in a complex and expensive synthesis process. Additionally, such synthesis methods often provide either relatively low yields or significant amounts of chemical waste.Recent studies increasingly focus on the development of electrode materials with an intrinsic high-rate performance by combining the advantages of exhibiting 1) a suitable host structure for fast lithium-ion intercalation, 2) a lower bandgap to enhance the electrical conductivity, and 3) a higher working voltage to avoid lithium dendrite formation. Titanium-based oxides, such as Li 4 Ti 5 O 12 and anatase TiO 2 , are well known as interesting electrode materials, while they exhibit working voltages of 1.55 and 1.8 V, [10,11] respectively, preventing lithium plating. However, in order to obtain high rate performance,

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Xia

Zhao

Kuo

et al. 2021

Advanced Energy Materials

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“…Apart from graphite and Li 4 Ti 5 O 12 , the CrTi-based compounds are another kind of well-recognized anode material owing to their high reversibility and small volume change during the charge/discharge process. These compounds mainly include LiCrTiO 4 , Li 5 Cr 9 Ti 4 O 24 , and derivative compounds with a high voltage plateau of around 1.5 V. − Recently, a novel CrTi-based compound Li 5 Cr 7 Ti 6 O 25 is reported as a hopeful anode material for LIBs. Yi successfully synthesized Li 5 Cr 7 Ti 6 O 25 via the sol–gel process using lithium acetate, chromium nitrate, and tetrabutyl titanate as raw materials .…”

Section: Introductionmentioning

confidence: 99%

Carbon-Enhanced Electrochemical Performance for Spinel Li₅Cr₇Ti₆O₂₅ as a Lithium Host Material

Yan

Qian

et al. 2016

ACS Sustainable Chem. Eng.

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The design and facile fabrication of CrTi-based anode materials with long-life, good safety, and low cost are strongly desired for lithium-ion batteries. In this study, we adopt the sol–gel method using glucose as carbon source to synthesize carbon-coated Li5Cr7Ti6O25. The effects of a carbon layer in Li5Cr7Ti6O25/C on electrochemical properties are focused through comparing carbon-coated Li5Cr7Ti6O25 with carbon-free Li5Cr7Ti6O25. Electrochemical tests show that Li5Cr7Ti6O25/C possesses better cycling and rate performances than those of carbon-free Li5Cr7Ti6O25. Cycled at 500 mA g–1, Li5Cr7Ti6O25/C delivers a high specific capacity of 111.6 mAh g–1 with 13% capacity loss after 200 cycles. In contrast, Li5Cr7Ti6O25 only exhibits a specific capacity of 93.6 mAh g–1 at 500 mA g–1 with 19% capacity loss after 200 cycles. The preeminent electrochemical property of Li5Cr7Ti6O25/C is ascribed to the amorphous carbon coating layer. This carbon layer can remarkably facilitate the transportation of electrons and ions in Li5Cr7Ti6O25. Furthermore, the lithiation/delithiation behavior of Li5Cr7Ti6O25/C is also investigated by advanced in situ X-ray diffraction technique, and the results verify that Li5Cr7Ti6O25/C possesses a highly reversible structural change during the charge/discharge process.

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“…When almost all the lithium ions are extracted from the electrode, the working potential rises quickly to 3.0 V. As shown in Table S1 is a high irreversible capacity loss between the lithiation and delithiation cycles. The high irreversible capacity loss may be mainly attributed to some side reactions for SEI formation composed of organic lithium alkylcarbonates, the lithium adsorption in the conductive additive carbon black and irreversible electrochemical decomposition of the electrolyte [32,[39][40][41]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Structure and electrochemical performance of BaLi2−x Na x Ti6O14 (0≤x≤2) as anode materials for lithium-ion battery

Tao

Zhu

et al. 2017

Sci. China Mater.

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Li5Cr9Ti4O24: A new anode material for lithium-ion batteries

Cited by 22 publications

References 46 publications

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Carbon-Enhanced Electrochemical Performance for Spinel Li₅Cr₇Ti₆O₂₅ as a Lithium Host Material

Structure and electrochemical performance of BaLi2−x Na x Ti6O14 (0≤x≤2) as anode materials for lithium-ion battery

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Li5Cr9Ti4O24: A new anode material for lithium-ion batteries

Cited by 22 publications

References 46 publications

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Nickel Niobate Anodes for High Rate Lithium‐Ion Batteries

Carbon-Enhanced Electrochemical Performance for Spinel Li5Cr7Ti6O25 as a Lithium Host Material

Structure and electrochemical performance of BaLi2−x Na x Ti6O14 (0≤x≤2) as anode materials for lithium-ion battery

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Product

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Carbon-Enhanced Electrochemical Performance for Spinel Li₅Cr₇Ti₆O₂₅ as a Lithium Host Material