Mechanical and dielectric relaxation studies on the fast oxide ion conductor Na0.54Bi0.46TiO2.96

Wang, W.G.; Li, X.Y.; Liu, T.; Hao, Gang

doi:10.1016/j.ssi.2016.03.023

Cited by 21 publications

(12 citation statements)

References 23 publications

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Section: Impedance Spectroscopymentioning

confidence: 99%

“…The frequency fm, at which −Im(Z(ω)) goes through a maximum, corresponds to the single relaxation time, which fulfills the relation 2πfmτm = 1. For a thermally activated relaxation process, the variation of τ with T obeys an Arrhenius law given by [153,154]: The frequency f m , at which −Im(Z(ω)) goes through a maximum, corresponds to the single relaxation time, which fulfills the relation 2πf m τ m = 1. For a thermally activated relaxation process, the variation of τ with T obeys an Arrhenius law given by [153,154]:…”

Section: Impedance Spectroscopymentioning

confidence: 99%

See 1 more Smart Citation

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

et al. 2020

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Energy storage materials are finding increasing applications in our daily lives, for devices such as mobile phones and electric vehicles. Current commercial batteries use flammable liquid electrolytes, which are unsafe, toxic, and environmentally unfriendly with low chemical stability. Recently, solid electrolytes have been extensively studied as alternative electrolytes to address these shortcomings. Herein, we report the early history, synthesis and characterization, mechanical properties, and Li+ ion transport mechanisms of inorganic sulfide and oxide electrolytes. Furthermore, we highlight the importance of the fabrication technology and experimental conditions, such as the effects of pressure and operating parameters, on the electrochemical performance of all-solid-state Li batteries. In particular, we emphasize promising electrolyte systems based on sulfides and argyrodites, such as LiPS5Cl and β-Li3PS4, oxide electrolytes, bare and doped Li7La3Zr2O12 garnet, NASICON-type structures, and perovskite electrolyte materials. Moreover, we discuss the present and future challenges that all-solid-state batteries face for large-scale industrial applications.

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Section: Impedance Spectroscopymentioning

confidence: 99%

Section: Impedance Spectroscopymentioning

confidence: 99%

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

et al. 2020

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“…Compared with the Na 0.54 Bi 0.46 TiO 2.96 compound, the bulk conductivity of the Na 0.5 Bi 0.5 Ti 0.96 Mg 0.04 O 2.96 (NBT-Mg4) sample is about 8.3 × 10 −4 S cm −1 at 673 K, which is lower than that of the Na 0.54 Bi 0.46 TiO 2.96 sample at the same measuring temperature (1.6 × 10 −3 S cm −1 at around 673 K). Compared with the IF curves of NBT-Mg4 and Na 0.54 Bi 0.46 TiO 2.96 sample [13], the height of the oxygen relaxation IF peak P 1 in Na 0.54 Bi 0.46 TiO 2.96 sample is 0.016 at 1 Hz, which is lower than that of the oxygen relaxation IF peak P 1 in NBT-Mg4 sample at 1 Hz. The lower peak height in the Na 0.54 Bi 0.46 TiO 2.96 sample reflects the less mobile oxygen vacancy concentration.…”

Section: Resultsmentioning

confidence: 72%

“…In previously reported results, oxide ionic conductivity of NBT-based materials was improved by the monovalent Na + (Ca 2+ or K + )-doping on the trivalent Bi 3+ -site to obtain a higher oxygen vacancy concentration in NBT materials [13][14][15]. The objective of the present study is to alter the tetravalent Ti 4+ by divalent Mg 2+ to determine the effect on the electrical properties of Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds .…”

Section: Introductionmentioning

confidence: 89%

“…The objective of the present study is to alter the tetravalent Ti 4+ by divalent Mg 2+ to determine the effect on the electrical properties of Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds . The complex impedance spectroscopy technique is considered to be a promising non-destructive testing method to analyse the electrical performance and other characterization methods such as internal friction (IF) and dielectric relaxation were used to investigate the oxide ionic microscopic transport mechanism and the factors influencing oxide ion diffusion in oxide-ion conductors Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x were studied [13,16].…”

Section: Introductionmentioning

confidence: 99%

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Study on electrical conductivity and oxygen migration of the oxide-ion conductors $$\hbox {Na}_{0.5}\hbox {Bi}_{0.5}\hbox {Ti}_{1-x}\hbox {Mg}_{{x}}\hbox {O}_{3-x}$$ Na 0.5 Bi

Wang

Liu

et al. 2019

Bull Mater Sci

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Electrical performance and oxygen relaxation behaviour in Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds were investigated. The oxide ion conductivity of Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds increased first and then decreased with increasing Mg-doped content. The highest oxide ion conductivity of 4.7 × 10 −3 S cm −1 at 773 K was observed for the Na 0.5 Bi 0.5 Ti 0.96 Mg 0.04 O 2.96 compound. A typical relaxation peak in the Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x samples was observed. The activation energy and pre-exponential factors were determined as (1.0 eV, 4.7 × 10 −16 s) and (0.94−1.0 eV, 6.8 × 10 −14 −3.1 × 10 −13 s) from internal friction and dielectric relaxation measurement, respectively. The lower oxide ion conductivity in Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x (x = 0.06, 0.08, 0.10) compounds may arise from the lower vacancy mobility. Judging from the electrical performance and relaxation parameters, although lower-level Mgdoping can improve oxide ionic conductor, oxygen vacancy mobility in Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds cannot be improved with increasing Mg-doping content. These results will be meaningful to ameliorate the electrical properties of Na 0.5 Bi 0.5 Ti 1−x Mg x O 3−x compounds and understand the relationship between the electrical properties and structure.

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Mechanical and impedance spectroscopy studies on the fast oxide ion conductor Na0.54Bi0.5Ti0.94Mg0.06O2.94

Wang

Liu

2017

J Mater Sci: Mater Electron

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Mechanical and dielectric relaxation studies on the fast oxide ion conductor Na0.54Bi0.46TiO2.96

Cited by 21 publications

References 23 publications

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Study on electrical conductivity and oxygen migration of the oxide-ion conductors $$\hbox {Na}_{0.5}\hbox {Bi}_{0.5}\hbox {Ti}_{1-x}\hbox {Mg}_{{x}}\hbox {O}_{3-x}$$ Na 0.5 Bi

Mechanical and impedance spectroscopy studies on the fast oxide ion conductor Na0.54Bi0.5Ti0.94Mg0.06O2.94

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