Rapid synthesis and thermoelectric properties of In0.1Co4sb11Te0.8Ge0.2 alloys via high temperature and high pressure

2015 ◽  
Vol 105 ◽  
pp. 38-41 ◽  
Author(s):  
Hairui Sun ◽  
Xiaopeng Jia ◽  
Pin Lv ◽  
Le Deng ◽  
Yuewen Zhang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Rapid Synthesis

Rapid synthesis and thermoelectric properties of clathrate Ba8Cu6Ge15Si25 by high temperature and high pressure

2016 ◽  
Vol 30 (07) ◽  
pp. 1650087 ◽  
Author(s):  
Bing Sun ◽  
Xiaopeng Jia ◽  
Dexuan Huo ◽  
Hairui Sun ◽  
Yuewen Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
High Pressure ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Layered Structure ◽  
Bulk Material ◽  
Rapid Synthesis ◽  
Synthesis Time ◽  
Fine Layered Structure ◽  
Pressure Synthesis

Ba8Cu6Ge[Formula: see text]Si[Formula: see text] were successfully synthesized by a simple high pressure and high temperature (HPHT) method to investigate the microstructures and thermoelectric (TE) properties. After high pressure synthesis, a highly dense bulk material with lots of fine-layered structure, lattice defects and disorders has been obtained. As expected, the thermal conductivity decreased greatly and the ZT value has been improved significantly, which reaches up to 0.43 at around 773 K. Comparing with other methods, HPHT could shorten the synthesis time from several days to half an hour. It reveals that the HPHT method will become an effective approach for optimizing the TE performance of these materials.

Off-stoichiometry effects on the thermoelectric properties of Cu2+δSe (−0.1 ≤ δ ≤ 0.05) compounds synthesized by a high-pressure and high-temperature method

CrystEngComm ◽  
2020 ◽  
Vol 22 (4) ◽  
pp. 695-700 ◽  
Author(s):  
Lisha Xue ◽  
Weixia Shen ◽  
Zhuangfei Zhang ◽  
Manjie Shen ◽  
Wenting Ji ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Chemical Composition ◽  
Transport Properties ◽  
Carrier Concentration ◽  
Thermoelectric Properties ◽  
Carrier Mobility ◽  
Temperature Method

The chemical composition can directly tune the transport properties of Cu2Se liquid-like materials, including the carrier concentration, carrier mobility and superionic feature.

Thermoelectric properties of S-doped Cu2Se materials synthesized by high-pressure and high-temperature method

2019 ◽  
Vol 34 (01) ◽  
pp. 2050006
Author(s):  
Lisha Xue ◽  
Chao Fang ◽  
Weixia Shen ◽  
Manjie Shen ◽  
Wenting Ji ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
High Pressure ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Thermoelectric Properties ◽  
Composition Change ◽  
Selenium Compounds ◽  
Competitive Effects ◽  
Temperature Method ◽  
Pressure Synthesis

High-pressure technique is an effective route to synthesize thermoelectric materials and tune transport properties simultaneously. In this work, S-doped copper–selenium compounds [Formula: see text], [Formula: see text] were successfully synthesized by high-pressure and high-temperature (HPHT) technology in just 30 min. [Formula: see text] samples show layered morphology composed of abundant pores and lattice defects. The appropriate S introduction ([Formula: see text] and 0.03) can effectively enhance Seebeck coefficient and reduce the thermal conductivity of [Formula: see text]. Compared with the pure [Formula: see text] sample, [Formula: see text] exhibits a 30% lower thermal conductivity, but the decline of power factor by the distinctly increased electrical resistivity at high temperature results in a smaller zT at temperature [Formula: see text] K. The variations of thermoelectric properties are resulted from the competitive effects between S-doping and actual composition change (Cu:S). It indicates that S-doping is not so effective in improving the zT value of [Formula: see text] materials by high-pressure synthesis.

Thermoelectric properties of SmxCo4Sb12 prepared by high pressure and high temperature

2010 ◽  
Vol 493 (1-2) ◽  
pp. 535-538 ◽  
Author(s):  
Y.P. Jiang ◽  
X.P. Jia ◽  
T.C. Su ◽  
N. Dong ◽  
F.R. Yu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Thermoelectric Properties
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