Enhanced thermoelectric performance of Cu12Sb4S13−δ tetrahedrite via nickel doping

Sun, Fu‐Hua; Dong, Jinfeng; Dey, Shaugath; Asfandiyar,; Wu, Chaofeng; Pan, Yu; Tang, Haida; Li, Jing‐Feng

doi:10.1007/s40843-018-9241-x

Cited by 23 publications

(11 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The undoped tetrahedrite Cu 12 Sb 4 S 13 is a p-type semiconductor showing metallic character with high electrical conductivity of 10 5 S•m −1 at 300 K and a moderately high Seebeck coefficient, which together with very low thermal conductivity values allows for achieving a ZT parameter of 0.56 (at T = 673 K) [1]. Appropriate doping allows an increase in ZT max of tetrahedrites, which has been shown in many works [2][3][4][5][6]. Due to the high carrier i.e., electron holes, concentration of pure tetrahedrite, mainly dopants and structural modifications reducing the hole concentration, i.e., donor-type dopants, are used to increase the ZT value.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

et al. 2022

View full text Add to dashboard Cite

Tetrahedrites, due to their promising thermoelectric properties, are one of the materials being investigated for use in thermoelectric generators. One problem is the lack of n-type tetrahedrites, which would be beneficial for the design of tetrahedrite thermoelectric modules. Preliminary theoretical studies have shown that elements from groups I and II can be introduced into the structural voids of tetrahedrite, acting as donor dopants, and should enable n-type conductivity. Therefore, in this work, an attempt was made to obtain and study magnesium-doped tetrahedrites. A series of samples, MgxCu12Sb4S13, with different magnesium contents were obtained and their phase and chemical compositions were characterized. It was observed that the structural changes occurring upon doping indicate that Mg atoms are likely to be embedded in the structural voids. The experimental studies have been supported by electronic structure calculations indicating that the most likely location of Mg is in the structural voids at the 6b Wyckoff position. Seebeck coefficient and resistivity measurements showed that doping with Mg reduces the concentration of holes, which is consistent with the predicted donor character of the dopant. However, the introduction of magnesium in sufficient amounts to achieve n-type conductivity was not successful.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Most studies [ 10–33 ] on Cu 12 Sb 4 S 13 have focused on the single‐ or cosubstitution on the Cu, Sb, or S sites. Such as Co, Zn, Fe, Ni, Cd, Hg, Mg, Sn, Ag, and Mn at Cu sites, Bi, Te, As, Ge, and Sn at Sb sites, and Se at S sites have been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Substitution Site Selection and Thermoelectric Performance‐Enhancing Mechanism of Cu₁₂Sb₄S₁₃ Doped with Pb/Ge/Sn

Liu

Qin

Liu

2021

Physica Status Solidi (b)

View full text Add to dashboard Cite

Tetrahedrite Cu12Sb4S13 has attracted much attention as an earth‐abundant and ecofriendly thermoelectric material with intrinsic low thermal conductivity. Herein, the effects of carbon group elements Pb, Ge, and Sn on the electronic structure and thermoelectric properties of Cu12Sb4S13 are extensively investigated based on first‐principles electronic structure calculations and Boltzmann transport theories. It is found that the most energetically favorable sites for the elements Pb and Ge are the Cu(1) sites, while for Sn atoms they are the Cu(2) sites. And the engineered electronic density of states by Pb/Ge/Sn doping results in a sharp increase of the Seebeck coefficient and a great decrease in carrier thermal conductivity of the host. In addition, the Cu12Sb4S13 compounds substituted with Pb/Ge at Cu(2) sites and Sn at Cu(1) sites have a preferable optimizing thermoelectric performance in a whole. Especially, the optimizing ZT of the host could get an about 15‐time improvement at T = 470 K upon Sn substituting at Cu(1) sites.

show abstract

“…Single phase Cu 12 Sb 4 S 13 was obtained from natural minerals such as the "seed matrix" [4,16] which demonstrated a novel route for the preparation of Cu 12 Sb 4 S 13 [4,16]. On the other hand, transition metal elements (Mn [7,10,17,18], Fe [19,20], Co [21], Ni [8,22], Sn [23], Pb [24] Bi [25] and Zn [26]) used for doping Cu 12 Sb 4 S 13 have been extensively studied to enhance the thermoelectric properties of the material. Moreover, higher amounts of Fe-doped tetrahedrite [19,20] and tetrahedrites co-doped with Ni and Zn [27] demonstrated improved ZT values.…”

Section: Introductionmentioning

confidence: 99%

The influence of self-doping of stibnite ore with impurities on the preparation, heat capacity, magnetic and transport properties of tetrahedrite Cu₁₂Sb₄S₁₃

Chen

Zhang

et al. 2020

Materials Science-Poland

View full text Add to dashboard Cite

Stibnite mineral (mainly Sb2S3) has been employed for the synthesis of tetrahedrite Cu12Sb4S13 bulk material by spark plasma sintering. High purity Cu12Sb4S13 can be quickly obtained by two sintering procedures at temperatures from the range of 420 °C to 440 °C for 1 h. Appropriate reduction of Cu content (Cu12+xSb4S13, x ⩽−0.05) or CuS content (Cu12−ySb4S13−y, y = 0.1 or 0.3) was beneficial to fabricate Cu12Sb4S13. The secondary resintering improved the purity of Cu12Sb4S13 material. The first-order magnetic phase transformation with magnetic hysteresis effect was confirmed by the behavior of susceptibility, heat capacity and resistivity. The magnetization showed a linear increase with increasing field (up to 7 T) and non-saturation behavior was observed. The impurities in stibnite mineral Sb2S3 had a weak influence on the transformation temperature but affected the low-temperature magnetization value (~0.15, close to natural tetrahedrite). Similar transformation was observed by the analysis of heat capacity. The properties such as electrical resistivity, Seebeck coefficient and thermal conductivity were also measured for Cu11:9Sb4S13 and Cu11:9Sb4S12:9. The maximum figure of merit ZT of Cu11:9Sb4S12:9 was 0.22 at 367 K.

show abstract

Enhanced thermoelectric performance of Cu12Sb4S13−δ tetrahedrite via nickel doping

Cited by 23 publications

References 32 publications

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

Substitution Site Selection and Thermoelectric Performance‐Enhancing Mechanism of Cu₁₂Sb₄S₁₃ Doped with Pb/Ge/Sn

The influence of self-doping of stibnite ore with impurities on the preparation, heat capacity, magnetic and transport properties of tetrahedrite Cu₁₂Sb₄S₁₃

Contact Info

Product

Resources

About

Enhanced thermoelectric performance of Cu12Sb4S13−δ tetrahedrite via nickel doping

Cited by 23 publications

References 32 publications

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

Experimental and Theoretical Studies on Possibility of Void Filling by Magnesium in Mg-Doped Tetrahedrites

Substitution Site Selection and Thermoelectric Performance‐Enhancing Mechanism of Cu12Sb4S13 Doped with Pb/Ge/Sn

The influence of self-doping of stibnite ore with impurities on the preparation, heat capacity, magnetic and transport properties of tetrahedrite Cu12Sb4S13

Contact Info

Product

Resources

About

Substitution Site Selection and Thermoelectric Performance‐Enhancing Mechanism of Cu₁₂Sb₄S₁₃ Doped with Pb/Ge/Sn

The influence of self-doping of stibnite ore with impurities on the preparation, heat capacity, magnetic and transport properties of tetrahedrite Cu₁₂Sb₄S₁₃