Enhancement of the Thermoelectric Figure of Merit in Blended Cu2Sn1-xZnxS3 Nanobulk Materials

被引：15

作者：

Zhou, Wei ^{[1
]}

Dwivedi, Pratibha ^{[1
]}

Shijimaya, Chiko ^{[1
]}

Ito, Mayumi ^{[2
]}

Higashimine, Koichi ^{[2
]}

Nakada, Takeshi ^{[1
]}

Takahashi, Mari ^{[1
]}

Mott, Derrick ^{[1
]}

Miyata, Masanobu ^{[1
]}

Ohta, Michihiro ^{[3
]}

Miwa, Hiroshi ^{[4
]}

Akatsuka, Takeo ^{[4
]}

Maenosono, Shinya ^{[1
]}

机构：

[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan

[2] Japan Adv Inst Sci & Technol, Ctr Nano Mat & Technol, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan

[3] Natl Inst Adv Ind Sci & Technol, Res Inst Energy Conservat, Tsukuba, Ibaraki 3088568, Japan

[4] Nippon Shokubai Co Ltd, Res Ctr, Himeji, Hyogo 6711292, Japan

来源：

ACS APPLIED NANO MATERIALS | 2018年 / 1卷 / 09期

关键词：

thermoelectric materials; sulfide; nanoinclusion; nanoparticles; phonon scattering; percolation; ELECTRICAL-RESISTIVITY; PERFORMANCE; CU2SNS3; SYSTEM; PBS;

D O I：

10.1021/acsanm.8b01017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Among the promising waste heat harvesting technologies, thermoelectric materials and devices have attracted considerable interest in recent decades because they offer a promising route to convert waste heat into electrical power. The Cu2Sn1-xZnxS3 system consists of green and abundant elements and exhibits modest thermoelectric performance at a relatively low temperature range. However, the thermoelectric figure of merit, ZT, of Cu2Sn1-xZnxS3 is still too low for practical applications. This study encompasses the bottom-up wet chemical synthesis of Cu2Sn1-xZnxS3 nanoparticles with varying Zn compositions. By blending Cu2Sn0.85Zn0.15S3 and Cu2Sn0.9Zn0.1S3 nanoparticles in a weight fraction of 9:1 to make a nanobulk material, we could achieve a maximum ZT value of 0.64 at 670 K, which is 1.7 and 1.9 times higher than the ZT values of the pristine Cu2Sn0.85Zn0.15S3 and Cu2Sn0.9Zn0.1S3 nanobulk materials, respectively.

引用

页码：4819 / 4827

页数：17

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