Hu Guichun, Varamesh Amir, Zhong Na, Kong Fangong, Hu Jinguang
Department of Chemical & Petroleum Engineering, Schulich School of Engineering, Calgary, AB, T2N 1N4, Canada.
State Key Laboratory of Biobased Material and Green Papermaking, Faculty of Light Industry, Shandong Academy of Sciences, Qilu University of Technology, Jinan, 250353, People's Republic of China.
Bioresour Bioprocess. 2023 Aug 23;10(1):54. doi: 10.1186/s40643-023-00669-w.
High-performance electrical Joule heaters with high mechanical properties, low driving voltage, rapid response, and flexibility are highly desirable for portable thermal management. Herein, by using aligned bacterial cellulose (BC) and silver nanowire (AgNW), we fabricated a novel film heater based on Joule heating phenomena. The aligned BC film prepared by stretching BC hydrogel and hot-pressing drying technology showed outstanding mechanical properties and flexibility. The ultrahigh strength of up to 1018 MPa and the toughness of 20 MJ/m were obtained for the aligned BC film with 40% wet-stretching (BC-40). In addition, the aligned BC film could be folded into desirable shapes. The AgNW was spray-coated on the surface of aligned BC-40 film and then covered with polydimethylsiloxane to form a P@AgNW@BC heater. P@AgNW@BC heater showed excellent conductivity, which endowed the film heater with an outstanding Joule heating performance. P@AgNW@BC heater could reach ~ 98 ℃ at a very low driving voltage of 4 V with a rapid heating response (13 s) and long-term temperature stability. The P@AgNW@BC heater with such an outstanding heating performance can be used as a flexible heating device for different applications in daily life like deicing/defogging device, wearable thermotherapy, etc.Affiliations: Please check and confirm that the authors and their respective affiliations have been correctly identified and amend if necessary.yes, we confirmed the affiliations are correct. Article title: Kindly check and confirm the edit made in the article title.Thanks, the title is no problem.
具有高机械性能、低驱动电压、快速响应和灵活性的高性能电焦耳加热器对于便携式热管理非常理想。在此，通过使用取向细菌纤维素（BC）和银纳米线（AgNW），我们基于焦耳热现象制备了一种新型薄膜加热器。通过拉伸BC水凝胶和热压干燥技术制备的取向BC薄膜表现出优异的机械性能和柔韧性。对于经40%湿拉伸的取向BC薄膜（BC-40），获得了高达1018 MPa的超高强度和20 MJ/m的韧性。此外，取向BC薄膜可以折叠成所需形状。将AgNW喷涂在取向BC-40薄膜表面，然后用聚二甲基硅氧烷覆盖，形成P@AgNW@BC加热器。P@AgNW@BC加热器表现出优异的导电性，赋予薄膜加热器出色的焦耳热性能。P@AgNW@BC加热器在4 V的极低驱动电压下能够达到约98℃，具有快速加热响应（13秒）和长期温度稳定性。具有如此出色加热性能的P@AgNW@BC加热器可作为一种柔性加热装置，用于日常生活中的不同应用，如除冰/除雾装置、可穿戴热疗等。
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