Effects of CaO–B2O3 glass addition on the low-temperature sintering and cation ordering in Sr La(1−)Ti Al(1−)O3 ceramics

Lei, Shenhui; Fan, Huiqing; Chen, Weina

doi:10.1016/j.jallcom.2015.01.142

Cited by 22 publications

(3 citation statements)

References 38 publications

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“…The clear diffraction patterns of the (442), (442̅), (440), and (004) planes demonstrate good crystallinity and high quality of Cu 31 S 16 . In addition, the existence of superlattice reflection indicates that Cu 31 S 16 is an order-structure phase . The SAED analysis unambiguously confirms that the second phase for the Cu 1.88 Ni 0.02 S sample is the monoclinic structure of Cu 31 S 16 , which is consistent with the result of XRD analysis.…”

Section: Results and Discussionsupporting

confidence: 84%

“…In addition, the existence of superlattice reflection indicates that Cu 31 S 16 is an order-structure phase. 31 The SAED analysis unambiguously confirms that the second phase for the Cu 1.88 Ni 0.02 S sample is the monoclinic structure of Cu 31 S 16 , which is consistent with the result of XRD analysis. Figure 3f shows the high-resolution transmission electron microscopy (HRTEM) image of the (440) and (004) planes, which is shown in Figure 3e.…”

Section: Methodssupporting

confidence: 85%

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Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Shen

Zheng

Liu

et al. 2020

ACS Appl. Mater. Interfaces

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At present, copper sulfide materials have been predicted as promising thermoelectric materials due to their inexpensiveness and nontoxicity property. Most researches on copper sulfide are focused on Cu2S and Cu1.8S because they are more easily synthesized into a single phase; however, the improper electrical conductivity greatly hindered their thermoelectric properties. In this work, a series of high-performance Cu1.9–x Ni x S (x = 0, 0.01, 0.015, and 0.02) bulk samples were fabricated by accurately manipulating the ratio of Cu/S with appropriate Ni-doping. The thermoelectric properties of Ni-doped Cu1.9S were explored in detail for the first time. It can be found that carrier thermal conductivity and lattice thermal conductivity of Cu1.9–x Ni x S were effectively reduced via Ni-doping, simultaneously, without the great influence on the power factor. Here, the carrier thermal conductivity (κe) was reduced due to the extreme reduction of Hall carrier concentration. In addition, amounts of nanopores introduced by Ni-doping and complex crystal structure from the phase transition of the second phase strengthen the phonon scattering and reduce lattice thermal conductivity (κl) remarkably. As a consequence, the lowest carrier thermal conductivity and lattice thermal conductivity reach 0.006 and 1.08 W m–1 K–1 for Cu1.88Ni0.02S at 773 K, and the average ZT is about 0.39 from 323 to 773 K (the ZTmax is about 0.9 at 773 K). This work demonstrates that low-cost and easily fabricated Ni-doped Cu1.9S is a pleasurable candidate for thermoelectric application despite it usually being treated as an ion conductor.

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Section: Results and Discussionsupporting

confidence: 84%

Section: Methodssupporting

confidence: 85%

Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Shen

Zheng

Liu

et al. 2020

ACS Appl. Mater. Interfaces

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“…Referring to phase diagram, constant effort has been put on generating thermodynamic data of C12A7 phase since 1900s, but uncertainty still remains for newly published data . As compositions (ratios of raw materials or/and additions) and fabrication processing (sintering time, atmosphere, and temperature) have great effects on resulting performances and characteristic properties of oxides, the synthesis methods for multifunctional C12A7 single crystal are still under debated. For instance, C12A7 sintered in different atmospheres (including H 2 , H 2 /N 2 , O 2 , and vacuum) could lead to various derivatives with special performances (see the part of “Derivatives of C12A7”) .…”

Section: Introductionmentioning

confidence: 99%

Characteristics, Thermodynamics, and Preparation of Nanocaged 12CaO·7Al₂O₃ and Its Derivatives

Liao

Chen

Guang-rong

et al. 2016

Int J Applied Ceramic Tech

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Crystal structures, characteristics, and preparations of 12CaO·7Al2O3 family and CaO–Al2O3 (C–A) system have been reviewed in detail with relevant thermodynamic parameters being assessed or recalculated. 12CaO·7Al2O3 (shortened as C12A7) can form several derivatives of type C12A7:Mn− or C12A7–Mn− through replacing so‐called “free oxygen ion” by many anions including OH−, H−, O−, O2−, F−, Cl−, and e− in their cages, or being adopted by rare earth metals or alkaline earth metal oxides at cation sites (Ca2+ or Al3+). These doped C12A7 derivatives show unique material properties of transparent conduction, catalysis, and antibacterial with potential applications in fast ion conductors, optoelectronics, oxidants, and catalysts etc.

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Sintering characteristic and microwave dielectric properties of 0.45Ca0.6Nd0.267TiO3–0.55Li0.5Nd0.5TiO3 ceramics with La2O3–B2O3–ZnO additive

Chen

Zhang

et al. 2018

Appl. Phys. A

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Effects of CaO–B2O3 glass addition on the low-temperature sintering and cation ordering in Sr La(1−)Ti Al(1−)O3 ceramics

Cited by 22 publications

References 38 publications

Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Characteristics, Thermodynamics, and Preparation of Nanocaged 12CaO·7Al₂O₃ and Its Derivatives

Sintering characteristic and microwave dielectric properties of 0.45Ca0.6Nd0.267TiO3–0.55Li0.5Nd0.5TiO3 ceramics with La2O3–B2O3–ZnO additive

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Effects of CaO–B2O3 glass addition on the low-temperature sintering and cation ordering in Sr La(1−)Ti Al(1−)O3 ceramics

Cited by 22 publications

References 38 publications

Boosting High Thermoelectric Performance of Ni-Doped Cu1.9S by Significantly Reducing Thermal Conductivity

Boosting High Thermoelectric Performance of Ni-Doped Cu1.9S by Significantly Reducing Thermal Conductivity

Characteristics, Thermodynamics, and Preparation of Nanocaged 12CaO·7Al2O3 and Its Derivatives

Sintering characteristic and microwave dielectric properties of 0.45Ca0.6Nd0.267TiO3–0.55Li0.5Nd0.5TiO3 ceramics with La2O3–B2O3–ZnO additive

Contact Info

Product

Resources

About

Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Boosting High Thermoelectric Performance of Ni-Doped Cu_1.9S by Significantly Reducing Thermal Conductivity

Characteristics, Thermodynamics, and Preparation of Nanocaged 12CaO·7Al₂O₃ and Its Derivatives