Experimental and ab initio study of the Ag–Li system for energy storage and high-temperature solders

Braga, Maria Helena; Dębski, A.; Terlicka, S.; Gąsior, W.; Góral, A.

doi:10.1016/j.jallcom.2019.152811

Cited by 13 publications

(15 citation statements)

References 23 publications

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“…The Ag 30 Li 70 sample was prepared as described in Ref. [1]. The XRD data were obtained from 10 to 90° (2θ) with a Bragg Brentano configuration for polycrystalline samples with a wavelength of λ = 0.1542 nm which is, in fact, an average of two closely spaced peaks (CuKα1 and CuKα2).…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

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The Ag–Li system's experimental and ab initio thermodynamic dataset

et al. 2020

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The Ag–Li system was analysed using first-principles calculations 10.1016/j.jallcom.2019.152811 [1]. The method included using density functional theory to optimize the crystal structure of the phases constituting the binary phase diagram by relaxing atomic positions, volume, and shape. The optimized structures were subsequently used to calculate thermodynamic properties at different temperatures; by determining the zero-point energy, the vibrational internal energy, and the entropy, the heat capacity at constant volume was obtained as well as the phases' stability limits. Furthermore, optimized structures were used to calculate the XRD patterns and to compare them with experimental data. All the referred data are now accessible to researchers and industrials demanding to work with binary and higher-order systems that include Ag and Li, for example, for energy storage. Binaries should be well assessed prior to higher-order phase diagrams and in that resides additional usefulness to this data.

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Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“…The theoretical background in Ref. [1] explains the calculations of the Thermodynamic data included in this database; the theoretical principles were used as implemented in VASP [2], MT [3] and Phonon [4].…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

The Ag–Li system's experimental and ab initio thermodynamic dataset

et al. 2020

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“…According to the XRD spectrum in Figure 1f , apart from a residual small Li peak at 36.19°, the peaks assigned to the AgLi intermetallic compound composed of almost the same molar ratio as Ag and Li were observed, because Ag 0.5 Li 0.5 thermodynamically shows the lowest formation enthalpy. [ 30 , 31 ] Moreover, it was confirmed that the tetragonal and cubic phases existed together, although the tetragonal phase is known to be formed more favorably than the cubic phase, [ 30 , 32 ] which is in contrast to the composition with a small amount of Ag, exhibiting a solid solution behavior. [ 26 , 28 ] Besides, although pure Ag has a high electrical conductivity, its value is largely reduced by the structural and composition changes when forming an intermetallic compound, [ 33 ] which would be indeed beneficial for the alleviation of Li plating on the top surface of the ALI to some extent.…”

Section: Resultsmentioning

confidence: 99%

In Situ Formed Ag‐Li Intermetallic Layer for Stable Cycling of All‐Solid‐State Lithium Batteries

et al. 2021

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With the timely advent of the electric vehicle era, where battery stability has emerged as a major issue, all-solid-state batteries (ASSBs) have attracted significant attention as the game changer owing to their high stability. However, despite the introduction of a densely packed solid electrolyte (SE) layer, when Li is used to increase the energy density of the cell, the short-circuit problem caused by Li protrusion is unavoidable. Furthermore, most strategies to control nonuniform Li growth are so complicated that they hinder the practical application of ASSBs. To overcome these limitations, this study proposes an Ag-Li alloy anode via mass-producible roll pressing method. Unlike previous studies reporting solid-solution-based metal alloys containing a small amount of lithiophilic Ag, the in situ formed and Ag-enriched Ag-Li intermetallic layer mitigates uneven Li deposition and maintains a stable SE/Ag-Li interface, facilitating reversible Li operation. Contrary to Li cells showing frequent initial short-circuit, the cell incorporating the Ag-Li anode exhibits a better capacity retention of 94.3% for 140 cycles, as well as stable cycling even under 12 C. Through a facile approach enabling the fabrication of a large-area anode with controllable Li growth, this study provides practical insight for developing ASSBs with stable cyclabilities.

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“…The efficient use of renewable clean energy such as solar energy has become a hot spot in current scientific research 1‐5 . And the efficient application of energy storage technology depends largely on the materials 6‐10 .…”

Section: Introductionmentioning

confidence: 99%

“…The efficient use of renewable clean energy such as solar energy has become a hot spot in current scientific research. [1][2][3][4][5] And the efficient application of energy storage technology depends largely on the materials. [6][7][8][9][10] Metal and its alloy used as thermal energy storage (TES) materials with the advantages of high thermal conductivity, high heat storage density and low subcooling, are ideal for the thermal storage.…”

Section: Introductionmentioning

confidence: 99%

Effect of Yttrium on antioxidant process of Mg‐Ni‐Zn phase change thermal storage alloys

Chen

et al. 2020

Int J Energy Res

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Summary Metal and alloy phase change materials (PCMs) have played an important role in solar energy storage because of their high thermal storage density and thermal conductivity. However, metals and their alloys, especially Mg alloys, are easily oxidized at high temperatures. In order to overcome this shortcoming, we studied the high‐temperature oxidation performance of phase change heat storage alloys. This research investigated and discussed the effect of adding rare earth element yttrium on the high‐temperature antioxidant process in Mg‐based phase change heat storage alloys in detail. In this research, by adding different contents of Y on the basis of Mg‐Ni‐Zn alloys, the cyclic oxidation kinetics and thermodynamics, oxidation products, oxide layer morphology and structure of Mg‐Ni‐Zn‐Y alloys were investigated. The results indicate that the oxidized Mg‐Ni‐Zn‐Y thermal storage alloys are mainly composed of Mg2Ni, ZnO, Y2O3, MgO, and its eutectic structure. The addition amount of Y is positively correlated with the phase transition temperature. The oxidation of Y to Y2O3 segregates on the grain boundaries, hinders the diffusion process of Magnesium ions, Zinc ions, Nickel ions, and Oxygen ions in the oxide film, and replaces the oxidized Mg and Zn elements, which changes the oxidation mechanism and reduces the oxidation of the alloy. And this research provides a theoretical basis for the application of Mg‐based alloy phase change heat storage materials.

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Experimental and ab initio study of the Ag–Li system for energy storage and high-temperature solders

Cited by 13 publications

References 23 publications

The Ag–Li system's experimental and ab initio thermodynamic dataset

The Ag–Li system's experimental and ab initio thermodynamic dataset

In Situ Formed Ag‐Li Intermetallic Layer for Stable Cycling of All‐Solid‐State Lithium Batteries

Effect of Yttrium on antioxidant process of Mg‐Ni‐Zn phase change thermal storage alloys

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