24小时热门版块排行榜    

CyRhmU.jpeg
查看: 674  |  回复: 0

yexuqing

木虫之王 (文学泰斗)

太阳系系主任

[交流] 纳米粘合剂助力丝网印刷柔性热电材料

Nanobinders advance screen-printed flexible thermoelectrics

纳米粘合剂助力丝网印刷柔性热电材料

▲ 作者:WENYI CHEN, XIAO-LEI SHI, MENG LI, TING LIU, YUANQING MAO, QINGYI LIU, ET AL.

▲ 链接:https://www.science.org/doi/10.1126/science.ads5868

▲摘要:柔性度有限、制造工艺复杂、高成本和性能不足是限制柔性无机热电材料(用于可穿戴电子产品和其他高端冷却应用)的可扩展性和商业化的主要因素。

研究组开发了一种创新且具有成本效益的技术,其集成了溶剂热、丝网印刷和烧结技术来制备无机柔性热电薄膜。该可印刷薄膜以Bi2Te3基纳米板作为高度取向晶粒,以纳米棒作为“纳米粘合剂”,具有优异的可印刷薄膜热电性能、良好的柔韧性、可大规模制造性和低成本。

研究组构建了由可印刷的n型Bi2Te3基薄膜和p型Bi0.4Sb1.6Te3薄膜组装而成的柔性热电器件,其归一化功率密度超过3 μW cm-2 K-2,在丝网印刷器件中表现优异。此外,该技术可扩展至其他无机热电薄膜体系,如Ag2Se,显示出广泛的适用性。

▲ Abstract:Limited flexibility, complex manufacturing processes, high costs, and insufficient performance are major factors restricting the scalability and commercialization of flexible inorganic thermoelectrics for wearable electronics and other high-end cooling applications. We developed an innovative, cost-effective technology that integrates solvothermal, screen-printing, and sintering techniques to produce an inorganic flexible thermoelectric film. Our printable film, comprising Bi2Te3-based nanoplates as highly orientated grains and Te nanorods as “nanobinders,” shows excellent thermoelectric performance for printable films, good flexibility, large-scale manufacturability, and low cost. We constructed a flexible thermoelectric device assembled by printable n-type Bi2Te3-based and p-type Bi0.4Sb1.6Te3 films, which achieved a normalized power density of >3 μW cm-2 K-2, ranking among the highest in screen-printed devices. Moreover, this technology can be extended to other inorganic thermoelectric film systems, such as Ag2Se, showing broad applicability.
回复此楼
----
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 yexuqing 的主题更新
普通表情 高级回复(可上传附件)
信息提示
请填处理意见