碳纳米管纤维基热电器件的制备及其性能研究  

Preparation and performance research of carbon nanotube fiber-based thermoelectric devices

作　　者：余龙 邱华 顾鹏 YU Long;QIU Hua;GU Peng(College of Textile Science and Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学纺织科学与工程学院,江苏无锡214122

出　　处：《丝绸》2024年第2期60-66,共7页Journal of Silk

基　　金：国家中医药管理局创新团队与人才培养计划项目(ZYYCXTD-D-202206)。

摘　　要：利用温差发电的柔性热电器件具有可持续、环保和可穿戴的优点,但是多数热电器件需要利用金属电极相互连接,这在一定程度上降低了热电器件的整体性能。本文利用OA和FeCl 3对碳纳米管纤维进行N型和P型掺杂,制备了无需金属电极连接的具有连续P-N结构的热电纤维,并且利用热电纤维制备了3D热电器件。结果显示,N型和P型碳纳米管纤维基热电纤维分别具有-69.7、62.2μV K的高塞贝克系数和552.9、431.4μW(m·K 2)的高功率因数,3D热电器件能够利用人体与环境之间垂直方向上的温差产生开路电压,并可用作简单的温度传感器。这种3D热电器件具有优异的热电性能,在柔性自供电领域有广泛的应用前景。With the continuous development of flexible wearable electronic devices,thermoelectric(TE)devices,which can harvest energy from human body heat,are highly demanded as a potential wearable energy device.Wearable TE devices based on Seebeck effect,which can convert human body heat into electrical energy,are considered as one of the effective solutions to solve the energy problem of wearable electronic devices.TE devices can directly convert waste heat into electrical energy,which greatly improves energy utilization.And wearable TE devices have significant advantages in human body applications,such as flexibility,environmental protection,and sustainability.In the past few decades,people have been working on developing flexible TE devices.However,traditional inorganic thermoelectric materials have limitations such as heavy weight,high rigidity,and toxicity,which limit their application in flexible devices.In addition,conventional two-dimensional(2D)architecture thermoelectric devices can only harvest thermal energy on a flat surface,making it difficult to utilize the temperature difference in the vertical gradient formed between the human body and the environment.In order to improve the flexibility and TE performance of TE devices,and to better utilize the vertical temperature difference between the human body and the environment,carbon nanotube fibers with high conductivity,flexibility,and light texture are used as the matrix.Oleylamine(OA)and FeCl 3 were selected as N-type and P-type dopants,and a simple impregnation method was used to perform N-type and P-type doping on the carbon nanotubes.By reasonably regulating the concentrations of OA solution and FeCl 3 solution,the optimal concentration was selected for doping carbon nanotube fibers,resulting in the preparation of P-N structured carbon nanotube fibers.Due to the lack of metal electrode connections,carbon nanotube fibers exhibit excellent TE performance.Then,the carbon nanotube fibers with P-N structure were combined with a three-dimensional(3D)mold to prepa

关 键 词：碳纳米管纤维 P-N结构 热电纤维 热电器件 温度传感器 

分 类 号：TS101.921[轻工技术与工程—纺织工程]