Hydrothermal synthesized nanostructure Bi–Sb–Te thermoelectric materials

Chen, Z.; Lin, Mao; Xu, G.D.; Chen, Song; Zhang, J.H.; Wang, M.M.

doi:10.1016/j.jallcom.2013.11.065

Cited by 43 publications

(19 citation statements)

References 12 publications

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“…[129][130][131][132][133][134][135][136][137][138][139] Briefly,w ei ntroducet he processing technologies that can be used to synthesize nanoscale Bi 2 Te 3 -based alloys, which include bottom-up [73][74][75][76][77][78][79][80][81][82][83] (the solvothermalm ethod and wet-chemical reaction) and top-down [64,66,[69][70][71] (high-energyB Ma nd MS) processes. [129][130][131][132][133][134][135][136][137][138][139] Briefly,w ei ntroducet he processing technologies that can be used to synthesize nanoscale Bi 2 Te 3 -based alloys, which include bottom-up [73][74][75][76][77][78][79][80][81]…”

Section: Processingt Echnologies For Boundary-engineered Te Materialsmentioning

confidence: 99%

“…Several nonconventional nanostructuring approaches for boundary engineering have allowedn otable successesw ith regard to the enhancement of TE performance levels. [129][130][131][132][133][134][135][136][137][138][139] Briefly,w ei ntroducet he processing technologies that can be used to synthesize nanoscale Bi 2 Te 3 -based alloys, which include bottom-up [73][74][75][76][77][78][79][80][81][82][83] (the solvothermalm ethod and wet-chemical reaction) and top-down [64,66,[69][70][71] (high-energyB Ma nd MS) processes. Our new technologiesd eveloped for boundary engineering are also presented.…”

Section: Processingt Echnologies For Boundary-engineered Te Materialsmentioning

confidence: 99%

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Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

et al. 2015

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Thermoelectrics, which transports heat for refrigeration or converts heat into electricity directly, is a key technology for renewable energy harvesting and solid-state refrigeration. Despite its importance, the widespread use of thermoelectric devices is constrained because of the low efficiency of thermoelectric bulk alloys. However, boundary engineering has been demonstrated as one of the most effective ways to enhance the thermoelectric performance of conventional thermoelectric materials such as Bi2 Te3 , PbTe, and SiGe alloys because their thermal and electronic transport properties can be manipulated separately by this approach. We review our recent progress on the enhancement of the thermoelectric figure of merit through boundary engineering together with the processing technologies for boundary engineering developed most recently using Bi2 Te3 -based bulk alloys. A brief discussion of the principles and current status of boundary-engineered bulk alloys for the enhancement of the thermoelectric figure of merit is presented. We focus mainly on (1) the reduction of the thermal conductivity by grain boundary engineering and (2) the reduction of thermal conductivity without deterioration of the electrical conductivity by phase boundary engineering. We also discuss the next potential approach using two boundary engineering strategies for a breakthrough in the area of bulk thermoelectric alloys.

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Section: Processingt Echnologies For Boundary-engineered Te Materialsmentioning

confidence: 99%

Section: Processingt Echnologies For Boundary-engineered Te Materialsmentioning

confidence: 99%

Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

et al. 2015

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“…Worldwide, the relative contributions of main applications are (USGS 2018): (i) 15% as additive for improving machinability of steel and iron, or for modifying physical characteristics of non-ferrous alloys like aluminium, tin, copper, lead, magnesium, and manganese, (ii) 30% in thermoelectric materials (e.g. as Bi2Te3 and PbTe; Chen et al 2014, Zhou et al 2014, and (iii) 40% in photonics (e.g., as rare earthdoped tellurite glasses, as CdTe in photovoltaics or as quantum dots for telecommunications, photodetectors and biotechnologies; Turner et al 2012, Leal et al 2015, Mahdy et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters

et al. 2019

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Environmental contextThe environmental behaviour of tellurium is poorly understood. We investigate the transport of tellurium in both dissolved and particulate forms from the river watershed to the Gironde Estuary, where a 30-year historical record provides insight on tellurium bioaccumulation in wild oysters. These results constitute the first comprehensive study on natural tellurium behaviour in a major fluvial-estuarine system, information essential for predictive modelling of tellurium risk assessment. AbstractTellurium (Te) is a technology critical element (TCE) with largely unknown environmental behaviour, especially in continent-ocean interface systems. The unknown behaviour results from the lack of studies in aquatic environments and from analytical challenges limiting the determination of its naturally low (ultra-trace) environmental levels. We performed a comprehensive study of Te in the Lot–Garonne–Gironde fluvial–estuarine system to better understand seasonal variations, solid/liquid partitioning (Kd), gross fluxes, estuarine dynamics, and transfer to wild oysters at the estuary mouth. A temporal record (2014–2017) of dissolved (Ted) and particulate (Tep) Te concentrations at five sites in the Lot–Garonne River system shows little differences between sites, with average ~0.9ngL−1 and ~50µgkg−1 respective concentrations. Watershed Ted and Tep follow parallel seasonal patterns, which result in constant partitioning (log10 Kd ~4.75Lkg−1), with constant annual gross dissolved fluxes (~15.0kgy−1) and variable gross particulate fluxes (from 6.50 to 140kgy−1) entering the Gironde Estuary. Estuarine reactivity in contrasting hydrological conditions (from flood to drought) suggest that grain-size effects and/or estuarine hydrological residence times strongly affect Tep behaviour. Historical records (1984–2017) of Te in wild oysters at the estuary mouth vary from 1.33 to 2.89µgkg−1 dry weight (d.w.), without any clear long-term trend. This study provides rare knowledge on Te environmental dynamics in aquatic systems, and suggests that, although no current anthropogenic sources were identified in the economically developed Lot-Garonne-Gironde fluvial-estuarine system, there is a non-negligible bioaccumulation in wild oysters at the estuary mouth.

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“…All peaks in Fig. a can be well indexed to a single phase of (Bi 0.2 Sb 0.8 ) 2 Te 3 with the space group R3m (PDF#72‐1836) , which indicates that Bi 0.4 Sb 1.6 Te 3 powders have been successfully synthesized by the hydrothermal method. No special preferential orientation is observed, suggesting the high randomness of the nanopowders.…”

Section: Resultsmentioning

confidence: 84%

Enhanced thermoelectric properties in p‐type Bi_0.4Sb_1.6Te₃ alloy by combining incorporation and doping using multi‐scale CuAlO₂ particles

Song

Zhang

Liu

et al. 2016

Physica Status Solidi (a)

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Multi‐scale CuAlO2 particles are introduced into the Bi0.4Sb1.6Te3 matrix to synergistically optimize the electrical conductivity, Seebeck coefficient, and the lattice thermal conductivity. Cu element originating from fine CuAlO2 grains diffuses into the Bi0.4Sb1.6Te3 matrix and tunes the carrier concentration while the coarse CuAlO2 particles survive as the second phase within the matrix. The power factor is improved at the whole temperatures range due to the low‐energy electron filtering effect on Seebeck coefficient and enhanced electrical transport property by mild Cu doping. Meanwhile, the remaining CuAlO2 inclusions give rise to more boundaries and newly built interfaces scattering of heat‐carrying phonons, resulting in the reduced lattice thermal conductivity. Consequently, the maximum ZT is found to be enhanced by 150% arising from the multi‐scale microstructure regulation when the CuAlO2 content reaches 0.6 vol.%. Not only that, but the ZT curves get flat in the whole temperature range after introducing the multi‐scale CuAlO2 particles, which leads to a remarkable increase in the average ZT.

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Hydrothermal synthesized nanostructure Bi–Sb–Te thermoelectric materials

Cited by 43 publications

References 12 publications

Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters

Enhanced thermoelectric properties in p‐type Bi_0.4Sb_1.6Te₃ alloy by combining incorporation and doping using multi‐scale CuAlO₂ particles

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Hydrothermal synthesized nanostructure Bi–Sb–Te thermoelectric materials

Cited by 43 publications

References 12 publications

Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

Boundary Engineering for the Thermoelectric Performance of Bulk Alloys Based on Bismuth Telluride

Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters

Enhanced thermoelectric properties in p‐type Bi0.4Sb1.6Te3 alloy by combining incorporation and doping using multi‐scale CuAlO2 particles

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Enhanced thermoelectric properties in p‐type Bi_0.4Sb_1.6Te₃ alloy by combining incorporation and doping using multi‐scale CuAlO₂ particles