Tuo Wang, Hong-Yi Chen, Peng-Fei Qiu, Xun Shi, Li-Dong Chen. Thermoelectric properties of Ag2S superionic conductor with intrinsically low lattice thermal conductivity [J]. Acta Physica Sinica, 2019, 68(9): 090201-1
- Acta Physica Sinica
- Vol. 68, Issue 9, 090201-1 (2019)
Fig. 1. Bulk XRD patterns of Ag2S compound at (a) 300 K and (b) 600 K.
Ag2S化合物在(a) 300 K和(b) 600 K时的块体XRD图谱
Fig. 2. (a) Backscattering image of Ag2S compound. Elemental mappings of (b) all elements, (c) Ag, and (d) S, respectively.
Ag2S化合物的(a)背散射电子图片; (b)所有元素, (c) Ag和(d) S的元素分布
Fig. 3. (a) Specific heat at constant pressure C p of Ag2S compound; (b) comparison of C p and the calculated specific heat at constant volume C V. The dash-dot lines are the theoretical C V of solid and liquid, respectively.
Ag2S化合物的(a)定压热容C p及(b)相同温度下的C p和定容热容C V计算值的比较, 其中点划线分别为固体的C V理论值3Nk B和液体的C V理论值2Nk B
Fig. 4. Temperature dependence of ionic conductivity (σ i) for Ag2S compound.
Ag2S化合物的离子电导率(σ i)随温度的变化
Fig. 5. Temperature dependences of (a) carrier concentration n H and (b) carrier mobility
for Ag2S compound.
Ag2S化合物的(a)载流子浓度n H和(b)载流子迁移率
随温度的变化
Fig. 6. Temperature dependences of (a) Seebeck coefficient S , (b) electrical conductivity σ , and (c) power factor (PF ) for Ag2S compound.
Ag2S化合物的(a)泽贝克系数S 、(b)电导率σ 、(c)功率因子PF 随温度的变化
Fig. 7. Temperature dependences of (a) total thermal concentration κ and (b) lattice thermal conductivity κ L for Ag2S compound. The κ L data for Cu2Se[5] and Cu2S[37] are included for comparison in panel (b).
Ag2S化合物的(a)总热导率κ 和(b)晶格热导率κ L随温度的变化, 图(b)中虚线所示为Cu2Se[5]和Cu2S[37]快离子导体热电材料的晶格热导率
Fig. 8. Phonon dispersion relations and density of states for Ag2S compound.
Ag2S的声子色散关系和声子态密度图
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