Improving thermoelectric energy harvesting efficiency by using graphene

被引：11

作者：

Usman, Muhammad ^{[1
,2
]}

Kim, In-Ho ^{[1
]}

Jung, Hyung-Jo ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Daejeon 34141, South Korea

[2] Natl Univ Sci & Technol, Sch Civil & Environm Engn, Sect H-12, Islamabad, Pakistan

来源：

AIP ADVANCES | 2016年 / 6卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

THERMAL-CONDUCTIVITY;

D O I：

10.1063/1.4953237

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study is aimed at enhancing the efficiency of a thermoelectric (TE) energy harvesting system by using a thick graphene layer. This method is a simple yet effective way to increase the temperature gradient across a conventional TE module by accelerating heat dissipation on the cold side of the system. Aqueous dispersions of graphene were used to prepare a 112-mu m thick graphene layer on the cold side of the TE system with aluminum as the substrate material. The maximum efficiency of the proposed system was improved by 25.45 %, as compared to the conventional TE system, which does not have a graphene layer. Additionally, the proposed system shows very little performance deterioration (2.87 %) in the absence of enough air flow on the cold side of the system, compared to the case of the conventional system (10.59 %). Hence, the proposed system, when coupled with the latest research on high performance TE materials, presents a groundbreaking improvement in the practical application of the TE energy harvesting systems. (C) 2016 Author(s).

引用

页数：7

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