Role of BO6 octahedral distortion on high temperature piezoelectric properties in Bi3-(Li0.5Sm0.5) TiNbO9

Hou, Dingwei; Zhang, Ao; Wang, Yuxin Jia Weijia

doi:10.1016/j.ceramint.2022.04.217

Cited by 12 publications

(2 citation statements)

References 37 publications

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“…1j) shows that the absorption edge for BOC with V O just slightly shifts to lower energy, which is in agreement with XPS spectra of Bi 4 f and indicates the presence of low chemical state Bi induced by V O (Fig. 1k) 45 . Based on the characterizations above, it can be concluded that the BOC with different contents of V O is successfully prepared.…”

Section: Materials Synthesis and The Identification Of V Osupporting

confidence: 82%

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

Chen

et al. 2023

Nat Commun

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Exploring efficient electrocatalysts with fundamental understanding of the reaction mechanism is imperative in CO2 electroreduction. However, the impact of sluggish water dissociation as proton source and the surface species in reaction are still unclear. Herein, we report a strategy of promoting protonation in CO2 electroreduction by implementing oxygen vacancy engineering on Bi2O2CO3 over which high Faradaic efficiency of formate (above 90%) and large partial current density (162 mA cm−2) are achieved. Systematic study reveals that the production rate of formate is mainly hampered by water dissociation, while the introduction of oxygen vacancy accelerates water dissociation kinetics by strengthening hydroxyl adsorption and reduces the energetic span of CO2 electroreduction. Moreover, CO3* involved in formate formation as the key surface species is clearly identified by electron spin resonance measurements and designed in situ Raman spectroscopy study combined with isotopic labelling. Coupled with photovoltaic device, the solar to formate energy conversion efficiency reaches as high as 13.3%.

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Section: Materials Synthesis and The Identification Of V Osupporting

confidence: 82%

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

Chen

et al. 2023

Nat Commun

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“…To date, numerous efforts have been made to enhance the piezoelectric performances of BLSFs. The most investigated BLSFs with T C values >600 • C are CaBi 2 Nb 2 O 9 (CBN), [12][13][14][15] Bi 3 TiNbO 9 (BTN), [16][17][18][19] CaBi 4 Ti 4 O 15 (CBT), [20][21][22][23] and Bi 4 Ti 3 O 12 (BIT). [24][25][26][27] With these previous works in mind, it was clear that elemental substitution is an effective approach to tailor the crystalline structure and microscopic morphology to effectively improve the piezoelectric and electrical properties of BLSFs.…”

Section: Introductionmentioning

confidence: 99%

High‐performance bismuth titanate‐ferrite (Bi₅Ti₃FeO₁₅) for high‐temperature piezoelectric applications

Wang,

Liang,

Wang

2024

J Am Ceram Soc.

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Advancing the development of high‐temperature piezoelectric sensors requires high‐performance piezoelectric materials with high Curie temperatures, wherein the charge signals can be efficiently collected at elevated temperatures. The bismuth layer‐structured ferroelectric (BLSF) bismuth titanate‐ferrite (Bi5Ti3FeO15, BTF) has recently attracted considerable attention because of its high Curie temperature (TC) of ∼761°C. However, the piezoelectric properties of BTF‐based compounds have not been extensively investigated because of their extremely poor piezoelectric performances and low electrical resistivities at elevated temperatures. Herein, tungsten‐substituted BTF (BTF‐100xW) ceramics were synthesized using a solid‐state reaction method. X‐ray diffraction refinement results confirmed the lattice distortion of the BO6 octahedron, while piezoelectric force microscopy images verified an increase in the domain wall density with tungsten modification, both of which contribute to significant enhancement of the piezoelectric properties of BTF‐100xW as intrinsic and extrinsic contributions, respectively. Remarkably, BTF‐3W exhibits a high TC of 793°C and a large piezoelectric constant (d33) of 24.3 pC/N, which is over three times that of BTF (7.1 pC/N). Importantly, the substitution of tungsten decreases the concentration of oxygen vacancies, increases the direct current electrical resistivity, and improves the electrical homogeneity at high temperatures, resulting in extremely stable piezoelectric and electromechanical properties at high temperatures, with a high in‐situ relative d33 of >90% at 400°C and a small variation in the electromechanical coupling factor (kp) of <8% at temperatures up to 450°C. These results suggest that the tungsten‐substituted BTF is a potential candidate for high‐temperature piezoelectric ceramics, and is a promising material for applications in high‐temperature piezoelectric sensors.

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Excellent Piezoelectric Properties of NBT-Based Lead-Free Ceramics Through Regulation of Oxygen Vacancies

Niu,

Fan,

et al. 2023

J. Electron. Mater.

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Role of BO6 octahedral distortion on high temperature piezoelectric properties in Bi3-(Li0.5Sm0.5) TiNbO9

Cited by 12 publications

References 37 publications

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

High‐performance bismuth titanate‐ferrite (Bi₅Ti₃FeO₁₅) for high‐temperature piezoelectric applications

Excellent Piezoelectric Properties of NBT-Based Lead-Free Ceramics Through Regulation of Oxygen Vacancies

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Role of BO6 octahedral distortion on high temperature piezoelectric properties in Bi3-(Li0.5Sm0.5) TiNbO9

Cited by 12 publications

References 37 publications

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

Promoting water dissociation for efficient solar driven CO2 electroreduction via improving hydroxyl adsorption

High‐performance bismuth titanate‐ferrite (Bi5Ti3FeO15) for high‐temperature piezoelectric applications

Excellent Piezoelectric Properties of NBT-Based Lead-Free Ceramics Through Regulation of Oxygen Vacancies

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Resources

About

High‐performance bismuth titanate‐ferrite (Bi₅Ti₃FeO₁₅) for high‐temperature piezoelectric applications