High rate capability core–shell lithium titanate@ceria nanosphere anode material synthesized by one-pot co-precipitation for lithium-ion batteries

Yang, Xinjie; Huang, Yudai; Wang, Xingchao; Jia, Dianzeng; Pang, Wei Kong; Guo, Zaiping; Tang, Xincun

doi:10.1016/j.jpowsour.2014.02.005

Cited by 51 publications

(21 citation statements)

References 47 publications

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“…10. From the figure it is clearly observed that as extending the voltage in regards to time, the OCV settles from 2.8 V. This may be due to the distribution of particles in the prepared films [61, 62]. The charge/discharge performance is measured for the above mentioned cell combination setup.…”

Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Bhalla

Rao²

2019

Heliyon

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Nanocomposite polymer (NCP) films were prepared by doping sodium acetate (CH3COONa) in polymer of polyvinyl pyrrolidone (PVP) by complete dispersion of aluminum oxide (Al2O3) with different wt% proportions using solution cast method. The acquired NCP films were systematically characterized. The crystalline structure of the prepared NCP films was confirmed by XRD. The little agglomeration and grain sizes involved in the films were analyzed by SEM. The chemical bond formation and interchange reaction between the host, dopant salt and the nanofiller were confirmed by FTIR and Raman. The lowest energy bandgap values were observed to be 3.0 eV for the synthesized film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%). The highest ionic conductivity was found to be 1.05 × 10−3 S/cm for the prepared film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%). From the charge discharge characteristics it was concluded that the film with wt% ratio of PVP + CH3COONa:Al2O3 (80:20:1%) possesses long durability when compared to the other prepared films.

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Section: Resultsmentioning

confidence: 99%

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Bhalla

Rao²

2019

Heliyon

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“…This kind of battery draws much attention in the past decades with increasing energy demand and environmental problems caused by fossil fuels consuming. The development of LIBs in the past is based on the development of electrode materials, such as spinel LiMn 2 O 4 and their derivation materials [6][7][8], olivine phosphate [9][10][11], silicon based materials [12][13][14], Li 4 Ti 5 O 12 [15][16][17][18][19][20][21][22], besides the commonly used LiCoO 2 and graphite. Among these electrode materials, Li 4 Ti 5 O 12 has been demonstrated as one of the most promising anode materials for LIBs since it exhibits ultra-long lifetime with zero structural change during the lithium insertion/extraction process and a relatively higher operating voltage (1.55 V vs. Li/Li + ) to ensure better safety of LIBs by avoiding the formation of lithium dendrites than the graphite electrode.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome the significant drawbacks of Li 4 Ti 5 O 12 , several approaches have been developed to improve the conductivity or electron transfer of Li 4 Ti 5 O 12 . One route is to synthesis nanostructure Li 4 Ti 5 O 12 materials including nanoparticles [16][17][18], nanorods [19], nanoplates [20] and so on. The nanostructures can reduce diffusion paths of both electron and lithium ions.…”

Section: Introductionmentioning

confidence: 99%

Solid-state synthesis and electrochemical performance of Ce-doped Li4Ti5O12 anode materials for lithium-ion batteries

Zhou

Feng

Guo

et al. 2015

Electrochimica Acta

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“…Moreover, as LTO has a relatively high reaction potential (1.55 V vs. Li/Li + ), an irreversible solid-electrolyte interphase (SEI) is not generated in the early stages of delithiation. Such advantageous characteristics highlight LTO as an appropriate material for electronic vehicles (HEVs, PHEVs, and EVs) and ESS [6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23]. …”

Section: Introductionmentioning

confidence: 99%

Highly-Stable Li4Ti5O12 Anodes Obtained by Atomic-Layer-Deposited Al2O3

et al. 2018

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LTO (Li4Ti5O12) has been highlighted as anode material for next-generation lithium ion secondary batteries due to advantages such as a high rate capability, excellent cyclic performance, and safety. However, the generation of gases from undesired reactions between the electrode surface and the electrolyte has restricted the application of LTO as a negative electrode in Li-ion batteries in electric vehicles (EVs) and energy storage systems (ESS). As the generation of gases from LTO tends to be accelerated at high temperatures (40–60 °C), the thermal stability of LTO should be maintained during battery discharge, especially in EVs. To overcome these technical limitations, a thin layer of Al2O3 (~2 nm thickness) was deposited on the LTO electrode surface by atomic layer deposition (ALD), and an electrochemical charge-discharge cycle test was performed at 60 °C. The capacity retention after 500 cycles clearly shows that Al2O3-coated LTO outperforms the uncoated one, with a discharge capacity retention of ~98%. TEM and XPS analyses indicate that the surface reactions of Al2O3-coated LTO are suppressed, while uncoated LTO undergoes the (111) to (222) phase transformation, as previously reported in the literature.

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High rate capability core–shell lithium titanate@ceria nanosphere anode material synthesized by one-pot co-precipitation for lithium-ion batteries

Cited by 51 publications

References 47 publications

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Effect of Al2O3 on structural and dielectric properties of PVP-CH3COONa based solid polymer electrolyte films for energy storage devices

Solid-state synthesis and electrochemical performance of Ce-doped Li4Ti5O12 anode materials for lithium-ion batteries

Highly-Stable Li4Ti5O12 Anodes Obtained by Atomic-Layer-Deposited Al2O3

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