Growth of Lithium Lanthanum Titanate Nanosheets and Their Application in Lithium-Ion Batteries

Lin, Xi; Wang, Hongqiang; Du, Haiwei; Xiong, Xinrun; Guo, Zaiping; Chu, Dewei

doi:10.1021/acsami.5b10877

Cited by 28 publications

(14 citation statements)

References 34 publications

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“…Diffraction peaks assignable to a layered perovskite with monoclinic structure (space group: P2 1 ) are found in the pattern. Similar to previous reports, [46][47][48] rectangular nanosheets with an edge size on the submicrometer scale were observed. A TEM image of the product is shown in Figure S1.…”

Section: Preparation Of La 2 Ti 2 O 7 As a Precursor Of Latio 2 N Viasupporting

confidence: 91%

“…[46] Firstly, TALH solution was diluted to 0.05 mol dm -3 by addition of deionized water. [46] Firstly, TALH solution was diluted to 0.05 mol dm -3 by addition of deionized water.…”

Section: Preparation Of La 2 Ti 2 Omentioning

confidence: 99%

“…[46][47][48] We predicted that the nanoflake structure should favor the complete diffusion of nitrogen during the nitriding process because of its high surface area and thinner morphology than bulk-or micropowder-type structures. La 2 Ti 2 O 7 was prepared by a hydrothermal process using a water-soluble titanium complex as a precursor.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

et al. 2019

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A facile method was successfully developed to prepare perovskite-type metal oxynitrides, LaTiO 2 N, from La 2 Ti 2 O 7 as a precursor in an atmosphere of N 2 . Urea was employed as a solid-state nitriding agent, instead of gaseous NH 3 , to increase the safety of the reaction. The hydrothermally prepared La 2 Ti 2 O 7 precursor had a nanosheet morphology and contained La(OH) 3 as a by-product. Through the optimization of reaction conditions including heat-treatment temperature and content [a]

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Section: Preparation Of La 2 Ti 2 O 7 As a Precursor Of Latio 2 N Viasupporting

confidence: 91%

“…[46] Firstly, TALH solution was diluted to 0.05 mol dm -3 by addition of deionized water. [46] Firstly, TALH solution was diluted to 0.05 mol dm -3 by addition of deionized water.…”

Section: Preparation Of La 2 Ti 2 Omentioning

confidence: 99%

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Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

et al. 2019

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Section: Historical Context Of Inorganic Ssesmentioning

confidence: 53%

Interfacial Incompatibility and Internal Stresses in All‐Solid‐State Lithium Ion Batteries

Liu

et al. 2019

Advanced Energy Materials

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The continuous depletion of fossil fuels, the increase of oil prices, and the need to decrease CO 2 emissions have stimulated intensive research on developing alternative renewable and clean energy sources. [1] Among these alternative energy sources, rechargeable Li-ion batteries (LIBs) are one of the promising candidates. To date, the LIBs basically consisting of a positive electrode (cathode), an electrolyte, and a negative electrode (anode) have widespread applications, such as portable electronic devices, pure electric vehicles (PEVs), and hybrid electric vehicles (HEVs). [2] The state-of-the-art electrolytes are usually the lithium salts (LiPF 6 , LiBF 4 , and LiCF 3 SO 3 ) dissolved in organic solvents, i.e., ethylene carbonate, propylene carbonate, polyethylene oxide, and dimethyl carbonate, [3] which exhibit excellent wetting of the electrodes and produce a fast transfer of Li + ions upon charging and discharging. However, they suffer from flammability, poor electrochemical stability, limited temperature range of operation, and low power density. [4] There is an ever-increasing demand for batteries with a higher energy and power density, although current LIBs offer volumetric and gravimetric energy densities up to 770 Wh L −1 and 260 Wh kg −1 , respectively. [5] To improve the energy/power density of LIBs, one way is to adopt high-potential cathode materials such as LiNi 0.5 Mn 1.5 O 4 (LNMO). The high-voltage plateau of LNMO (≈4.7 V vs Li/Li + ) makes its energy density 20-30% higher than the energy density of commercial LiCoO 2 and LiFePO 4 . [6] However, successful commercialization of the LNMO is restricted in high-energy LIBs due to electrolyte decomposition and side reaction of the cathodes and liquid electrolytes when operating at high voltages. [7,8] The other way to improve the energy/power density is to replace the conventional graphite anode with Li metal. The Li metal, with a low anode potential (−3.04 V vs standard hydrogen electrode) and high specific capacity (3862 mAh g −1 for the Li anode versus 372 mAh g −1 for the graphite anode), [9][10][11] has been considered as the "Holy Grail" of battery technologies. When paired with sulfur and oxygen, the theoretical energy density of Li-S (≈2567 Wh kg −1 ) and Li-O 2 (≈3505 Wh kg −1 ) batteries is far higher than the theoretical energy density of conventional LIBs (≈387 Wh kg −1 ). [12][13][14][15] When Li metal approaches the liquid electrolytes, however, unstable Li/electrolyte interface Rechargeable Li-ion batteries (LIBs) are electrochemical storage device widely applied in electric vehicles, mobile electronic devices, etc. However, traditional LIBs containing liquid electrolytes suffer from flammability, poor electrochemical stability, and limited operational temperature range. Replacement of the liquid electrolytes with inorganic solid-state electrolytes (SSEs) would solve this problem. However, several critical issues, such as poor interfacial compatibility, low ionic conductivity at ambient temperatures, etc., need to be surmounted befor...

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“…are the examples of active pyrochlore materials for oxygen reduction reaction . Recently, Lithium Lanthanum Titanates is used as an additive for the enhancement of the performance of Lithium ion batteries . Nanometric La 2 Ti 2 O 7 powder is considered as the novel negative electrode materials for Ni/oxide rechargeable batteries .…”

Section: Introductionmentioning

confidence: 99%

La₂Ti₂O₇ As Nanometric Electrode Material: An Emerging Candidate For Supercapacitor Performance

et al. 2019

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In this study, first time the nanometric powder of La2Ti2O7 (abbreviated as LTO) is taken as the electrode material for supercapacitor. The prepared material is characterized by various characterization techniques to know its structural and textural properties. The specific capacitance of the La2Ti2O7 is calculated from charge discharge curve. The Nyquist plot, bode plot and the plot of real capacitance vs. imaginary capacitance is well in support of supercapacitive activity of La2Ti2O7. The La2Ti2O7 exhibits 71 F/g of specific capacitance in 2 M KOH with 95.7% retention after 5000 cycles is due to the effective access of electrolyte to the redox sites owing to its layered structure. As these finding are new to the scientific community and demonstrate the great potential of La2Ti2O7 as electrode material for supercapacitor, the current findings may give a new pave in the area of supercapacitor research.

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Growth of Lithium Lanthanum Titanate Nanosheets and Their Application in Lithium-Ion Batteries

Cited by 28 publications

References 34 publications

Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

Interfacial Incompatibility and Internal Stresses in All‐Solid‐State Lithium Ion Batteries

La₂Ti₂O₇ As Nanometric Electrode Material: An Emerging Candidate For Supercapacitor Performance

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Growth of Lithium Lanthanum Titanate Nanosheets and Their Application in Lithium-Ion Batteries

Cited by 28 publications

References 34 publications

Preparation of LaTiO2N Using Hydrothermally Synthesized La2Ti2O7 as a Precursor and Urea as a Nitriding Agent

Preparation of LaTiO2N Using Hydrothermally Synthesized La2Ti2O7 as a Precursor and Urea as a Nitriding Agent

Interfacial Incompatibility and Internal Stresses in All‐Solid‐State Lithium Ion Batteries

La2Ti2O7 As Nanometric Electrode Material: An Emerging Candidate For Supercapacitor Performance

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Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

Preparation of LaTiO₂N Using Hydrothermally Synthesized La₂Ti₂O₇ as a Precursor and Urea as a Nitriding Agent

La₂Ti₂O₇ As Nanometric Electrode Material: An Emerging Candidate For Supercapacitor Performance