Bi_(2)Te_(3)基可穿戴温差发电器件的制备及性能  

Fabrication of Bi_(2)Te_(3)-based Wearable Thermoelectric Generator and Its Performance

作　　者：沈紫嫣 范武升 刘方诚[2] 张奇[1] 刘锋[1] 朱铁军[1] 赵新兵[1] SHEN Ziyan;FAN Wusheng;LIU Fangcheng;ZHANG Qi;LIU Feng;ZHU Tiejun;ZHAO Xinbing(State Key Laboratory of Silicon Materials,and School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China;Huawei Technologies Shanghai Co.Ltd.,Shanghai 201206,China)

机构地区：[1]浙江大学材料科学与工程学院,硅材料国家重点实验室,浙江杭州310027 [2]上海华为技术有限公司,上海201206

出　　处：《材料科学与工程学报》2021年第2期181-185,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(61534001,51871199)。

摘　　要：利用人体体温发电的热电器件因其结构简单、可靠性高,有望为可穿戴电子产品等低功耗设备提供免维护、长期稳定的能源。以高性能无机块体热电材料和低热导环氧树脂/玻璃微珠复合粘结剂作为原料,采用切割粘结法和磁控溅射/电化学镀铜技术,制备了热电臂高度不同的48对温差发电器件。由于该技术不需使用陶瓷覆铜板,在给定的器件厚度条件下,可提高热电臂高度。性能表征结果显示,在实际穿戴条件下,随热电臂高度的增加,器件的输出功率密度持续增加。在相当于一级风的空气对流条件下或正常行走状态下,热电臂高度为3.14mm的器件输出功率密度超过40μW/cm^(2)。Thermoelectric generators(TEGs)which convert body heat into usable energy are expected to provide maintenance-free and long-term power supplies for low-power devices.Such electronic devices are even wearable due to their simple structure and high reliability.In this paper,TEGs with 48 pairs of thermoelectric legs with different heights were fabricated by cutting and-bonding and magnetron sputtering/electroplating using high-performance inorganic thermoelectric materials and epoxy resin/glass microsphere com posites.Since ceramic substrates are not used in this method,the leg height can be maximized under the given thickness.The wrist-wearing tests show that the output power density of the TEGs increases with the increase of the leg length,over 40μW/cm^(2) can be obtained for the TEG with the leg height of 3.14 mm in the light air environment.

关 键 词：温差发电器件 切割粘结法 可穿戴电子产品 Bi_(2)Te_(3) 

分 类 号：TB34[一般工业技术—材料科学与工程]