Low-Temperature Triclinic Distortion in NASICON-Type LiSn2(PO4)3

Iglesias, Juan Eugenio; Sanz, J.; Martı́nez-Juárez, Ana; Rojo, J. M.

doi:10.1006/jssc.1997.7397

Cited by 16 publications

(4 citation statements)

References 15 publications

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“…The smaller size of Li + ion than Na + ion results in triclinic distortion of the framework at RT, which does not support fast lithium‐ion conduction. Similar situation can also be found in NASICON framework with M = Sn but with lower rhombohedral‐triclinic phase transition temperature . By varying the elements with lower ionic radii in M‐site, i.e., M = Ge, Ti, and Hf, a suitable cell volume around 1310 Å for lithium‐ion conduction with minimum activation energy has been confirmed (Fig.…”

Section: Nasicon‐type Electrolytessupporting

confidence: 77%

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Oxide Electrolytes for Lithium Batteries

et al. 2015

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As the most promising candidate of the solid electrolyte materials for future lithium batteries, oxide electrolytes with highlithium-ion conductivity have experienced a rapid development in the past few decades. Existing oxide electrolytes are divided into two groups, i.e., crystalline group including NASICON, perovskite, garnet, and some newly developing structures, and amorphous/glass group including Li 2 O-MO x (M = Si, B, P, etc.) and LiPON-related materials. After a historical perspective on the general development of oxide electrolytes, we try to give a comprehensive review on the oxide electrolytes with high-lithium-ion conductivity, with special emphasis on the aspect of materials selection and design for applications as solid electrolytes in lithium batteries. Some successful examples and meaningful attempts on the incorporation of oxide electrolytes in lithium batteries are also presented. In the conclusion part, an outlook for the future direction of oxide electrolytes development is given.

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Section: Nasicon‐type Electrolytessupporting

confidence: 77%

“…Similar situation can also be found in NASICON framework with M = Sn but with lower rhombohedral-triclinic phase transition temperature. 96 By varying the elements with lower ionic radii in M-site, i.e., M = Ge, Ti, and Hf, a suitable cell volume around 1310…”

Section: Nasicon-type Electrolytesmentioning

confidence: 99%

Oxide Electrolytes for Lithium Batteries

et al. 2015

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“…Two crystallographic phases have been reported so far for this compound [5,6,9]; a high temperature phase with rhombohedral R3c symmetry and high ionic conductivity, a low-temperature phase with triclinic P1 symmetry or monoclinic Cc symmetry and lower conductivity. Martinez-Juarez et al [10] and Lazarraga et al [11] have reported that LiSn 2 P 3 O 12 has a low ionic conductivity of ∼10 −10 S cm −1 .…”

Section: Introductionmentioning

confidence: 97%

Low-temperature sintering effects on NASICON-structured LiSn2P3O12 solid electrolytes prepared via citric acid-assisted sol-gel method

Mustaffa

Adnan

Sulaiman

et al. 2014

Ionics

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LiSn 2 P 3 O 12 with sodium (Na) super ionic conductor (NASICON)-type rhombohedral structure was successfully obtained at low sintering temperature, 600°C via citric acid-assisted sol-gel method. However, when the sintering temperature increased to 650°C, triclinic structure coexisted with the rhombohedral structure as confirmed by X-ray diffraction analysis. Conductivity-temperature dependence of all samples were studied using impedance spectroscopy in the temperature range 30 to 500°C, and bulk, grain boundary and total conductivity increased as the temperature increased. The highest bulk conductivity found was 3.64×10 −5 S/cm at 500°C for LiSn 2 P 3 O 12 sample sintered at 650°C, and the lowest bulk activation energy at low temperature was 0.008 eV, showing that sintering temperature affect the conductivity value. The voltage stability window for LiSn 2 P 3 O 12 sample sintered at 600°C at ambient temperature was up to 4.4 V. These results indicated the suitability of the LiSn 2 P 3 O 12 to be exploiting further for potential applications as solid electrolytes in electrochemical devices.

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“…tes; Sol-gel; impedance analysis based sol-gel method [13][14]. Therefore, to enhance the ionic conductivity of the…”

Section: Introductionmentioning

confidence: 99%

Silicon Substituted Lithium Stannum Phosphate Ceramic Electrolytes: Structural, Electrical and Electrochemical Properties

et al. 2020

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Electrical and electrochemical properties of silicon (Si) substituted NASICON-structured lithium stannum phosphate, Li1+ySn2P3-ySiyO12 with 0 < y < 1 that was prepared by the low-temperature water-based sol-gel method has been investigated. From the structural analysis, all samples in the system displayed rhombohedral symmetry. The total ionic conductivity, σt, and ionic mobility, µ was increased with the increase of silicon content, y. A high ionic conductivity value of 6.05 × 10-5 S cm-1 exhibited at y = 0.5 with a temperature of 500 °C. Linear sweep voltammetry analysis showed that the sample was electrochemically stable up to 5.1 V. Meanwhile, the ionic transference number value of the sample was 0.99, suggesting that the majority of mobile charge carriers were predominantly due to ions. Thus, from these results, it indicated that silicon substitution in LiSn2P3O12 ceramic electrolytes is significantly enhanced the electrical and electrochemical properties.

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Low-Temperature Triclinic Distortion in NASICON-Type LiSn2(PO4)3

Cited by 16 publications

References 15 publications

Oxide Electrolytes for Lithium Batteries

Oxide Electrolytes for Lithium Batteries

Low-temperature sintering effects on NASICON-structured LiSn2P3O12 solid electrolytes prepared via citric acid-assisted sol-gel method

Silicon Substituted Lithium Stannum Phosphate Ceramic Electrolytes: Structural, Electrical and Electrochemical Properties

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