Microstructure and enhanced seebeck coefficient of textured Sr3Ti2O7 ceramics prepared by RTGG method

Qin, Mengjie; Gao, Feng; Wang, Min; Wang, Li; Dong, Gaogao; Huang, Xixi

doi:10.1016/j.ceramint.2016.05.173

Cited by 12 publications

(1 citation statement)

References 33 publications

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“…Oxide TE materials typically exhibit relatively low electrical conductivity (σ) and high thermal conductivity (κ) . The most commonly used methods for improving the TE properties of SrTiO 3 -based materials include ion doping, nanostructure development, textured-structure development, annealing treatment, and special sintering processes, as shown in Figure . − Doping modification represents a relatively easy method of enhancing the TE properties. Several studies have employed rare-earth oxides (e.g., La 2 O 3 , Y 2 O 3 , Pr 2 O 3 , Dy 2 O 3 ), metallic oxides (CuO, Nb 2 O 5 ), and/or metal powders (Fe, Ag, Ti) as dopants, and improved TE properties were realized. − …”

Section: Introductionmentioning

confidence: 99%

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures

Qin

Lou

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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La-doped strontium titanite (Sr 0.9 La 0.1 TiO 3 ) is a promising candidate for n-type oxide thermoelectric materials. However, the ZT values of this material are low, leading to low conversion efficiency. Improvements in this efficiency are required. In this work, a high ZT value of 0.50 was obtained for Sr 0.9 La 0.1 TiO 3 ceramic samples by adding 10 wt % Bi 2 O 3 sintering aids and 20 wt % nanosized Ti powders to the matrix material. Although Ti was oxidized to TiO 2 during the sintering process, nanoscale phase interfaces were beneficial for phonon scattering and thermal conductivity reduction. Nanosized metallic Bi and Bi 2 O 3 particles were observed. These two factors played an important role in reducing the thermal conductivity from 2.5 W/(m K) at room temperature to 1.31 W/(m K) at 1073 K. Nanostructure control using nanosized metal powders as additives combined with the Bi 2 O 3 sintering aid paves a way for enhancement of thermoelectric properties of oxide thermoelectric materials.

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Section: Introductionmentioning

confidence: 99%

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures

Qin

Lou

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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Recent progress on piezoelectric energy harvesting: structures and materials

Jia-dong

Liu

et al. 2018

Adv Compos Hybrid Mater

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With the rapid development of advanced technology, piezoelectric energy harvesting (PEH) with the advantage of simple structure, polluted relatively free, easily minimization, and integration has been used to collect the extensive mechanical energy in our living environment holding great promise to power the self-sustainable system and portable electronics. In this paper, attempts have been made to review the progress of piezoelectric materials and devices used for energy harvesting. The review focused on three parts: structure of piezoelectric devices (cantilever, cymbal, and stacks); theoretical mode, including vibration mode (d 31 and d 33 ) and its responding theories of different devices; and piezoelectric materials, among which the electric performance of Pb(ZrTi)O 3 -based, lead-free-based, and composites applied in bulk/micro/nano-PEH devices were introduced in details. It is suggested that a new structure of PEH should be designed by combining advantages of cantilever, stacks, and cymbal structure. Besides, high d 33 × g 33 value and low ε of piezoelectric materials are required in order to generate high electric output power for bulk/micro/nano-PEH. Additionally, lead-free piezoelectric ceramics is a candidate for manufacturing PEH devices, and nano-composite materials should be developed to further improve the flexibility of piezoelectric materials.

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Thermoelectric enhancement in perovskite type textured Me0.85TiO3 ceramics by synergistic high-entropy and microstructure manipulations

Zhang,

Lou,

Wei

et al. 2024

Chemical Engineering Journal

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Microstructure and enhanced seebeck coefficient of textured Sr3Ti2O7 ceramics prepared by RTGG method

Cited by 12 publications

References 33 publications

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures

Recent progress on piezoelectric energy harvesting: structures and materials

Thermoelectric enhancement in perovskite type textured Me0.85TiO3 ceramics by synergistic high-entropy and microstructure manipulations

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Microstructure and enhanced seebeck coefficient of textured Sr3Ti2O7 ceramics prepared by RTGG method

Cited by 12 publications

References 33 publications

Enhancement of Thermoelectric Performance of Sr0.9La0.1TiO3-Based Ceramics Regulated by Nanostructures

Enhancement of Thermoelectric Performance of Sr0.9La0.1TiO3-Based Ceramics Regulated by Nanostructures

Recent progress on piezoelectric energy harvesting: structures and materials

Thermoelectric enhancement in perovskite type textured Me0.85TiO3 ceramics by synergistic high-entropy and microstructure manipulations

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Product

Resources

About

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures

Enhancement of Thermoelectric Performance of Sr_0.9La_0.1TiO₃-Based Ceramics Regulated by Nanostructures