喷墨打印制备AgCuTe热电薄膜

doi:10.15541/jim20240156

无机材料学报 ›› 2024, Vol. 39 ›› Issue (12): 1325-1330.DOI: 10.15541/jim20240156 CSTR: 32189.14.10.15541/jim20240156

所属专题：【信息功能】柔性材料(202412)；【能源环境】热电材料(202412)

喷墨打印制备AgCuTe热电薄膜

张波涛¹(), 孙婷婷³(), 王连军¹(), 江莞¹^,²

1.东华大学材料科学与工程学院, 纤维改性国家重点实验室, 上海 201620
2.东华大学功能材料研究中心, 上海 201620
3.东华大学生物与医学工程学院, 上海 201620

收稿日期:2024-04-01 修回日期:2024-05-27 出版日期:2024-06-24 网络出版日期:2024-06-24
通讯作者: 孙婷婷, 讲师. E-mail: Tingtingsun@dhu.edu.cn;
王连军, 教授. E-mail: wanglj@dhu.edu.cn
作者简介:张波涛(1997-), 男, 硕士研究生. E-mail: zbtfsy@163.com
基金资助:
国家自然科学基金(U23A20685);上海市教委科研创新项目(2021-01-07-00-03-E00110)

Inkjet Printing Preparation of AgCuTe Thermoelectric Thin Films

ZHANG Botao¹(), SUN Tingting³(), WANG Lianjun¹(), JIANG Wan¹^,²

1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
2. Institute of Functional Materials, Donghua University, Shanghai 201620, China
3. College of Biological Science and Medical Engineering, Donghua University, Shanghai 201620, China

Received:2024-04-01 Revised:2024-05-27 Published:2024-06-24 Online:2024-06-24
Contact: SUN Tingting, lecturer. E-mail: Tingtingsun@dhu.edu.cn;
WANG Lianjun, professor. E-mail: wanglj@dhu.edu.cn
About author:ZHANG Botao (1997-), male, Master candidate. E-mail: zbtfsy@163.com
Supported by:
National Natural Science Foundation of China(U23A20685);Innovation Program of Shanghai Municipal Education Commission(2021-01-07-00-03-E00110)

摘要/Abstract

摘要：

柔性热电器件可以利用人体与环境之间的微小温差发电, 在可穿戴设备的持续供电领域展现出巨大的潜力, 但较低的热电性能限制了柔性热电器件的广泛应用。本研究报道了一种利用喷墨打印制备高性能柔性热电薄膜的方法。将利用化学转移法制备的AgCuTe纳米线分散在乙醇溶剂中, 得到的墨水无明显沉降, 能稳定持续喷射, 将其喷印在聚酰亚胺衬底上得到p型热电薄膜。随后利用放电等离子烧结炉进行热处理, 得到了致密的热电薄膜, 并研究了烧结温度对热电性能的影响。结果表明, 在10 MPa、400 ℃下烧结15 min后, 室温下薄膜功率因子为432 µW·m^-1·K^-2, 比现有文献报道的喷墨打印p型Bi₂Te₃薄膜的室温功率因子(153 µW·m^-1·K^-2)提高了182%。本研究进一步拓宽了喷墨打印在柔性热电器件领域的应用, 同时也为制备新一代高性能柔性热电器件提供了更多可能。

关键词: 喷墨打印, 柔性热电薄膜, AgCuTe, 墨水

Abstract:

Flexible thermoelectric devices, capable of generating electricity from the slight temperature difference between the human body and the environment, demonstrate significant potential for continuous power supply in wearable devices. However, the poor thermoelectric performance still limits their widespread application. This study reports a method for fabricating high-performance flexible thermoelectric thin films using inkjet printing. AgCuTe nanowires prepared by a chemical transfer method were dispersed in ethanol to form the ink with no significant sedimentation, which could be stably and continuously sprayed to print p-type thermoelectric films on polyimide substrates. Dense thermoelectric films were then obtained through thermal treatment by a spark plasma sintering furnace, and the effect of sintering temperature on thermoelectric properties was studied. The results showed that the film sintered at a pressure of 10 MPa and a temperature of 400 ℃ for 15 min possessed a room temperature power factor of 432 µW·m^-1·K^-2, which is 182% higher than that of inkjet-printed p-type Bi₂Te₃ films (a room temperature power factor of 153 µW·m^-1·K^-2) reported in literature. This advancement further expands the application of inkjet printing in the field of flexible thermoelectrics and provides more possibilities for the fabrication of a new generation of high-performance flexible thermoelectric devices.

Key words: inkjet printing, flexible thermoelectric thin film, AgCuTe, ink

中图分类号:

TQ174

张波涛, 孙婷婷, 王连军, 江莞. 喷墨打印制备AgCuTe热电薄膜[J]. 无机材料学报, 2024, 39(12): 1325-1330.

ZHANG Botao, SUN Tingting, WANG Lianjun, JIANG Wan. Inkjet Printing Preparation of AgCuTe Thermoelectric Thin Films[J]. Journal of Inorganic Materials, 2024, 39(12): 1325-1330.

图/表 9

图1 AgCuTe粉体的XRD图谱

Fig. 1 XRD pattern of AgCuTe powders

图2 (a, b) AgCuTe粉体的SEM照片和(c~e) AgCuTe纳米线的EDS元素分布图

Fig. 2 (a, b) SEM images of AgCuTe powders and (c-e) elemental mappings of AgCuTe nanowire

图3 (a) AgCuTe粉体在去离子水和乙醇中的分散性和稳定性; (b) AgCuTe纳米线的TEM照片

Fig. 3 (a) Dispersibility and stability of AgCuTe powders in deionized water and ethanol, and (b) TEM image of AgCuTe nanowire

图4 1~16喷嘴喷出的墨滴形态

Fig. 4 Droplet morphologies from nozzles 1-16

图5 不同墨滴间距条件下打印的薄膜显微照片

Fig. 5 Micrographs of films printed at different droplet spacings (a) 5 μm; (b) 10 μm; (c) 20 μm; (d) 30 μm; (e) 40 μm; (f) Size of a single droplet

图6 不同温度烧结后薄膜的XRD图谱

Fig. 6 XRD patterns of films sintered at different temperatures

图7 (a) 300, (b) 350和(c) 400 ℃烧结后薄膜的表面SEM照片和(d) 400 ℃烧结后薄膜的断面SEM照片

Fig. 7 Surface SEM images of films sintered at (a) 300, (b) 350 and (c) 400 ℃, and (d) cross-sectional SEM image of film sintered at 400 ℃

表1 不同温度烧结后薄膜的热电性能

Table 1 Thermoelectric properties of films sintered at different temperatures

Sintering temperature/℃	σ/(S·cm^-1)	S/(μV·K^-1)	PF/(μW·m^-1·K^-2)
300	80	108	93
350	168	126	266
400	227	138	432

表2 本工作与已报道的喷墨打印p型热电材料的性能

Table 2 Performance of inkjet printed p-type thermoelectric materials in this work and reported literatures

Material	σ/ (S·cm^-1)	S/ (μV·K^-1)	PF/ (μW·m^-1·K^-2)	Ref.
PEDOT	267	21.5	12.3	[17]
PEDOT	300	10	3	[18]
Graphene	41	12	18.7	[19]
Bi_0.5Sb_1.5Te₃	135	21	61	[23]
Bi_0.5Sb_1.5Te₃	338	67.3	153	[25]
AgCuTe	227	138	432	This work

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喷墨打印制备AgCuTe热电薄膜

Inkjet Printing Preparation of AgCuTe Thermoelectric Thin Films

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