Thermodynamic criterions of the thermoelectric performance enhancement in Mg2Sn through the self-compensation vacancy

Synergistic modulation of the thermoelectric performance of melt-spun p-type Mg2Sn via Na2S and Si alloying

“…Intensive attention has been focussed on n-type Mg 2 (Si,Sn), which has already achieved high zT values over 1. [21][22][23][24][25] For example, Sb-doped Mg 2 Si 0.3 Sn 0.7 prepared by melt spinning achieved a zT value of 1.3 at 750 K, 24 and an excellent zT of 1.63 at 615 K was obtained in a porous Sbdoped Mg 2 Si 0.5 Sn 0.5 sample. 25 However, p-type Mg 2 (Si,Sn) does not perform as well as its n-type counterpart.…”

“…However, undoped Mg 2 Sn has high lattice thermal conductivity and a low carrier concentration, leading to low zT values. 22,23,[31][32][33] Therefore, synergistic modulation of both the electrical and thermal transport properties of Mg 2 Sn is essential. Many efforts have been devoted to the thermoelectric performance enhancement of p-type Mg 2 Sn.…”

Facile Fabrication of N-Type Flexible CoSb3-xTex Skutterudite/PEDOT:PSS Hybrid Thermoelectric Films

“…The efficiency of TE materials is described by a dimensionless figure of merit ZT = S 2 σTκ −1 , where S represents the Seebeck coefficient, σ represents electrical conductivity, κ represents thermal conductivity, and T represents absolute temperature. To improve the figure of merit, the majority of recent research is focused on two aspects: the enhancement of the power factor ( S 2 σ ) [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ] and the reduction in thermal conductivity κ [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ].…”

Станнид Mg-=SUB=-2-=/SUB=-Sn под давлением: результаты эволюционного поиска из первых принципов

“…Одним из наиболее интенсивно исследуемых в последние годы соединений магния, наряду с силицидом Mg 2 Si ( [1][2][3][4]) и германидом Mg 2 Ge, ( [5][6]) является станнид Mg 2 Sn ( [7][8][9][10][11]). В связи с относительно высокой температурой плавления T = 1030 K [12] и хорошей электропроводимостью станнид Mg 2 Sn подходит для использования в качестве термоэлементов в промышленном производстве [13,14].…”