Structural and thermodynamic stability of Li4Ti5O12 anode material for lithium-ion battery

Yi, Ting‐Feng; Xie, Ying; Zhu, Yan‐Rong; Zhu, Rong; Shen, Hao-Yu

doi:10.1016/j.jpowsour.2012.09.020

Cited by 202 publications

(116 citation statements)

References 49 publications

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“…The cathodic/anodic peaks are located at about 1.20/1.37, 1.17/1.39 and 1.18/1.35 V for NLTO-700, NLTO-800 and NLTO-bulk, respectively, which can be attributed to the oxidation/reduction of Ti 3+ /Ti 4+ couple [31,35] in Na2Li2Ti6O14. In addition, there is a broad peak with envelope feature at lower potentials after the second cycles, revealing the formation of amorphous phase when discharging down to 0.1 V. Similar electrochemical behavior can be found in other Ti-based anodes, such as Li4Ti5O12 and Li5Cr7Ti6O25 [36,37]. Furthermore, a cross point between the cathodic and anodic scan was found for the first cycle.…”

Section: Resultssupporting

confidence: 77%

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

Fan

Zhong

et al. 2017

Sci. China Mater.

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Relying on a solvent thermal method, spherical Na2Li2Ti6O14 was synthesized. All samples prepared by this method are hollow and hierarchical structures with the size of about 2-3 μm, which are assembled by many primary nanoparticles (~300 nm). Particle morphology analysis shows that with the increase of temperature, the porosity increases and the hollow structure becomes more obvious. Na2Li2Ti6O14 obtained at 800°C exhibits the best electrochemical performance among all samples. Charge-discharge results show that Na2Li2Ti6O14 prepared at 800°C can delivers a reversible capacity of 220.1, 181.7, 161.6, 144.2, 118.1 and 97.2 mA h g −1 at 50, 140, 280, 560, 1400, 2800 mA g −1 . However, Na2Li2Ti6O14-bulk only delivers a reversible capacity of 187, 125.3, 108.3, 88.7, 69.2 and 54.8 mA h g −1 at the same current densities. The high electrochemical performances of the as-prepared materials can be attributed to the distinctive hollow and hierarchical spheres, which could effectively reduce the diffusion distance of Li ions, increase the contact area between electrodes and electrolyte, and buffer the volume changes during Li ion intercalation/deintercalation processes.

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Section: Resultssupporting

confidence: 77%

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

Fan

Zhong

et al. 2017

Sci. China Mater.

Self Cite

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“…In comparison with the first and second CV curves of all samples, it is clear that the passivating film is mainly formed during the first insertion process, and the solid electrolyte interface (SEI) film of BaLi 2−x Na x Ti 6 O 14 (0≤x≤2) was formed below 0.7 V in the first cycle [31,32]. Like Li 4 Ti 5 O 12 [32,33], it is therefore reasonable to infer that BaLi 2−x Na x Ti 6 O 14 (0≤x≤2) is a SEI film free material cycled between 1.0 and 3.0 V. Moreover, all curves show a broad peak with envelope feature at low potentials at each cycle, revealing a formation of amorphous phase during discharge to 0 V [34]. Similar electrochemical behavior can be found in other Tibased anodes, such as Na 2 Li 2 Ti 6 O 14 [13,35] [37].…”

Section: Resultsmentioning

confidence: 91%

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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“…It offers a long voltage-plateau around 1.55V versus Li/Li + compatible with polymer electrolytes and high-voltage cathodes, therefore providing an electrode system with much improved safety characteristics and excellent reversibility. However, there are limits to its commercial application due to its intrinsically poor electrical conductivity, sluggish lithium-ion diffusion coefficient and unsatisfactory specific capacity [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of Li_4-xNa_xTi₅O₁₂and Li_4-xNa_xTi₅O₁₂/graphene composites as anode materials for lithium-ion batteries

Zhu

Zhang

Zhu

et al. 2016

MATEC Web of Conferences

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A potential Lithium-ion battery anode material Li4-xNaxTi5O12 (0≤x≤0.15) has been synthesized via a facile hydrothermal method with short processing time and low temperature. The XRD and FE-SEM results indicate that samples with Na-doped are well-crystallized and have more homogeneous particle distributions with smaller overall particle size in the range of 300-600nm. Electrochemical tests reveal that Na-doped samples exhibit impressive specific capacity and cycle stability compared to pristine Li4Ti5O12 at high rate. The Li3.9Na0.1Ti5O12 electrode deliver an initial specific discharge capacity of 169mAh/g at 0.5C and maintained at 150.4mAh/g even after 40 cycles with the reversible retention of 88.99%. Finally a simple solvothermal reduction method was used to fabricate Li3.9Na0.1Ti5O12/graphene Li3.9Na0.1Ti5O12/G composite. Galvanostatic charge-discharge tests demonstrate that this sample has remarkable capacities of 197.4mAh/g and 175.5mAh/g at 0.2C and 0.5C rate, respectively. This indicates that the Li3.9Na0.1Ti5O12/G composite is a promising anode material for using in lithium-ion batteries.

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Structural and thermodynamic stability of Li4Ti5O12 anode material for lithium-ion battery

Cited by 202 publications

References 49 publications

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

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

Hydrothermal synthesis of Li_4-xNa_xTi₅O₁₂and Li_4-xNa_xTi₅O₁₂/graphene composites as anode materials for lithium-ion batteries

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Structural and thermodynamic stability of Li4Ti5O12 anode material for lithium-ion battery

Cited by 202 publications

References 49 publications

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

Hollow and hierarchical Na2Li2Ti6O14 microspheres with high electrochemical performance as anode material for lithium-ion battery

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

Hydrothermal synthesis of Li4-xNaxTi5O12and Li4-xNaxTi5O12/graphene composites as anode materials for lithium-ion batteries

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Hydrothermal synthesis of Li_4-xNa_xTi₅O₁₂and Li_4-xNa_xTi₅O₁₂/graphene composites as anode materials for lithium-ion batteries