Electrochemical and spectroscopic investigation of samarium in a neutral ligand based-ionic liquid

Andrew, Chrysanthus; Dhivya, M.; Jayakumar, M.

doi:10.1016/j.jelechem.2021.115398

Cited by 12 publications

(16 citation statements)

References 43 publications

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“…The shift of the peak position from 1280 to 1292 cm −1 is observed. 47,48 Antisymmetric CH 3 and symmetric CH 3 of TMP that occur at 2965 and 2860 cm −1 show similar trends, as shown in Figure S3 of the Supporting Information. 49,50 Besides, when the LiPF 6 salt is introduced into the solutions, no obvious differences in the C−F stretching vibration of HFEs at 575−625 cm −1 are observed.…”

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confidence: 58%

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Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Liu

et al. 2022

J. Phys. Chem. Lett.

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Li-rich layered oxides (LLOs) are one of the most attractive next-generation positive electrode materials as a result of their high energy density and low cost. However, the deterioration of cycling stability observed in LLOs remains one of the fundamental obstacles to commercialization. Carbonate-based electrolytes reacting with oxygen radicals evolved from the lattice of LLOs is the chief cause of their poor cyclability. Herein, we construct no carbonyl group, trimethyl phosphate (TMP)-based electrolytes with a fluorinated ether co-solvent and apply them to investigate the electrochemical behaviors of LLO batteries. These electrolytes can capture active oxygen species; the initial reversible capacity of cells reaches 295.5 mAh g–1; and the capacity retention remains 96.7% after 100 cycles. In contrast, the capacity retention of cells using carbonate-based electrolytes is only 54.7% after 60 cycles. These results would provide the scientific basis and theoretical support for building electrolytes of LLOs with high properties in the future.

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confidence: 58%

“…The introduction of Li + to TMP leads to vibrational band shifts. The shift of the peak position from 1280 to 1292 cm –1 is observed. , …”

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confidence: 87%

Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Liu

et al. 2022

J. Phys. Chem. Lett.

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“…The XPS analysis of Fig. 3 shows the composition of the species obtained by the immersion method, this spectrum can be deconvoluted into two signals according to their binding energy, attributed to oxide and other forms of metallic samarium 55,56 . In the Sm3d analysis, the signal found at 111.13 eV corresponds to Sm 3+ 3d 3/2 and the peak observed at 1082.84 eV was attributed to Sm 3+ 3d5 /2 .…”

Section: Resultsmentioning

confidence: 99%

Study of the anticorrosive behavior of samarium as a corrosion inhibitor in multilayer systems for aluminum alloy

Mendez

Rojas

Bueno

et al. 2023

Sci Rep

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This study shows a multilayer system based on samarium compounds as a corrosion inhibitor and a continuous SiO2 layer by atmospheric pressure plasma jet (APPJ) as a protective barrier for aluminim alloy AA3003. One of the main advantages of this new coating is that it does not require vacuum chambers, which makes it easy to incorporate into production lines for automotive and aeronautical components, etc. The deposit of samarium corrosion inhibitor was carried out by two methods for comparison, the immersion method and a novel method to deposit corrosion inhibitor by APPJ. The multilayer system generated was homogeneous, continuous, adherent, and dense. The electrochemical behavior shows that the samarium compound was completely oxidized on coatings by the immersion method and favors corrosion. The APPJ deposition method shows a protective behavior against corrosion by both samarium compounds and silica depositions. XPS analyses show that the amount of Sm(OH)3 increases by the APPJ method compared with the immersion method since the spectrum of O1s is mainly controlled by OH. It was determined that the best processing times for the electrochemical study of the multilayer system were 40 min for the immersion method and 30 s for the APPJ method for the layer of corrosion inhibitor. In the case of the SiO2 barrier layer by APPJ, the best time was 60 s of exposure to the plasma jet and this coating could reduce the corrosion of AA3003 by 31.42%.

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“…Based on the previously reported complexation of RE elements with the carbonyl oxygen in tributyl phosphate, it is expected that, when Nd(CF 3 SO 3 ) 3 is introduced into DMI, it will form [Nd(DMI) n ] 3+ cations and [CF 3 SO 3 ] − anions ,, since a carbonyl oxygen also exists in DMI. The formation mechanism can be expressed as follows based on previous reports: ,, …”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the entire system can also be regarded as a Ndcontaining "poor" solvate IL ([Nd(DMI) n ] + [CF 3 SO 3 ] − ) to some extent, 38 in keeping with the concept of previously reported NLILs. 23,24,37 The poor solubility of most ILs toward different chlorides limits their capacity to form solutions with high metal ion concentrations. However, using the strategy of combining Lewis-acidic RE salts and strongly polar molecular liquids, solutions with a high RE content can be obtained.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

LiNO₃-Supported Electrodeposition of Metallic Nd from Nd-Containing Solvate Ionic Liquid

et al. 2021

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Inexpensive electrolyte systems and readily available rare-earth (RE) precursors are necessary for the facile recovery of RE metals at the lowest temperature, which will allow the sustainable development of RE metal-based industries. Inspired by previous reports on Nd electrodeposition in various expensive and specialized ionic liquids (ILs), herein, we developed a practical, green, and cost-effective Nd-containing solvate IL composed of an organic solvent [(1,3-dimethyl-2-imidazolidinone)] and Nd (CF3SO3)3; the IL is well suited for Nd electrodeposition using LiNO3. The electrolyte structure and electrochemical mechanism of the IL were elucidated through physicochemical analyses and cyclic voltammetry. The role of nitrate was investigated in detail. Nd was successfully electrodeposited using the proposed method, as confirmed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction analyses. Thus, this work provides a firm theoretical basis and a practical strategy for the cost-effective bulk electrochemical extraction of RE metals at relatively low temperatures.

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Electrochemical and spectroscopic investigation of samarium in a neutral ligand based-ionic liquid

Cited by 12 publications

References 43 publications

Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Study of the anticorrosive behavior of samarium as a corrosion inhibitor in multilayer systems for aluminum alloy

LiNO₃-Supported Electrodeposition of Metallic Nd from Nd-Containing Solvate Ionic Liquid

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Electrochemical and spectroscopic investigation of samarium in a neutral ligand based-ionic liquid

Cited by 12 publications

References 43 publications

Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Exploring Trimethyl-Phosphate-Based Electrolytes without a Carbonyl Group for Li-Rich Layered Oxide Positive Electrodes in Lithium-Ion Batteries

Study of the anticorrosive behavior of samarium as a corrosion inhibitor in multilayer systems for aluminum alloy

LiNO3-Supported Electrodeposition of Metallic Nd from Nd-Containing Solvate Ionic Liquid

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LiNO₃-Supported Electrodeposition of Metallic Nd from Nd-Containing Solvate Ionic Liquid