SIC OpenIR
High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix
Lu, Xiaofang; Zhang, Qihao; Liao, Jincheng; Chen, Hongyi; Fan, Yuchi; Xing, Juanjuan; Gu, Shijia; Huang, Jilong; Ma, Jiaxin; Wang, Jiancheng; Wang, Lianjun; Jiang, Wan
2019-12-31
Source PublicationADVANCED ENERGY MATERIALS
ISSN1614-6832
SubtypeArticle; Early Access
AbstractThe (Bi,Sb)(2)Te-3 (BST) compounds have long been considered as the benchmark of thermoelectric (TE) materials near room temperature especially for refrigeration. However, their unsatisfactory TE performances in wide-temperature range severely restrict the large-scale applications for power generation. Here, using a self-assembly protocol to deliver a homogeneous dispersion of 2D inclusion in matrix, the first evidence is shown that incorporation of MXene (Ti3C2Tx) into BST can simultaneously achieve the improved power factor and greatly reduced thermal conductivity. The oxygen-terminated Ti3C2Tx with proper work function leads to highly increased electrical conductivity via hole injection and retained Seebeck coefficient due to the energy barrier scattering. Meanwhile, the alignment of Ti3C2Tx with the layered structure significantly suppresses the phonon transport, resulting in higher interfacial thermal resistance. Accordingly, a peak ZT of up to 1.3 and an average ZT value of 1.23 from 300 to 475 K are realized for the 1 vol% Ti3C2Tx/BST composite. Combined with the high-performance composite and rational device design, a record-high thermoelectric conversion efficiency of up to 7.8% is obtained under a temperature gradient of 237 K. These findings provide a robust and scalable protocol to incorporate MXene as a versatile 2D inclusion for improving the overall performance of TE materials toward high energy-conversion efficiency.
Keywordbismuth telluride-based composites high-efficiency MXene self-assembly thermoelectric power generation
DOI10.1002/aenm.201902986
WOS KeywordPERFORMANCE ; NANOCOMPOSITES ; ZT ; SKUTTERUDITE ; OPTIMIZATION ; ENHANCEMENT ; BI2TE3
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27462
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Lu, Xiaofang,Zhang, Qihao,Liao, Jincheng,et al. High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix[J]. ADVANCED ENERGY MATERIALS,2019.
APA Lu, Xiaofang.,Zhang, Qihao.,Liao, Jincheng.,Chen, Hongyi.,Fan, Yuchi.,...&Jiang, Wan.(2019).High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix.ADVANCED ENERGY MATERIALS.
MLA Lu, Xiaofang,et al."High-Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb)(2)Te-3 Matrix".ADVANCED ENERGY MATERIALS (2019).
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