Li Luhe, Hong Soon Kyu, Jo Yeongsu, Tian Mengdi, Woo Chae Young, Kim Soo Hyung, Kim Jong-Man, Lee Hyung Woo
ACS Appl Mater Interfaces. 2019 May 1;11(17):16223-16232. doi: 10.1021/acsami.9b02225. Epub 2019 Apr 22.
A high-performance, flexible, and transparent heater based on a hybrid of dry-spun carbon nanotubes (CNT), which is pulled out directly from a super vertically aligned CNT forest, and graphene is fabricated. The electrical, optical, and electromechanical properties of two different kinds of hybrid devices, graphene above or below the CNT film, and simple CNT film heating devices that are made of one or two layers of CNTs, are studied. The results prove that the hybrid structured film heaters are superior to the simple CNT film heaters. The simple single-layer CNT film and double-layer CNT film heaters attain maximum temperatures of 48 and 64 °C with transmittances of 73 and 64% at a wavelength of 550 nm, respectively, whereas the single-layer CNT sheet/graphene/PET and graphene/single-layer CNT sheet/PET hybrid heaters attain maximum temperatures of 81 and 85 °C with transmittances of 68 and 71%, respectively. The 10 000 bending cycle test suggests that the graphene/single-layer CNT sheet/PET heater has good mechanical and thermal stability. Further, defrost test and portable heating with a 9 V battery prove the possibility of using the hybrid heater for vehicle defrosting, portable heating, and wearable devices.
基于干纺碳纳米管（CNT）与石墨烯的混合材料制备了一种高性能、柔性且透明的加热器，其中碳纳米管是直接从超垂直排列的碳纳米管森林中拉出的。研究了两种不同类型混合器件的电学、光学和机电性能，这两种器件分别是碳纳米管薄膜上方或下方有石墨烯的器件，以及由一层或两层碳纳米管制成的简单碳纳米管薄膜加热器件。结果证明，混合结构的薄膜加热器优于简单的碳纳米管薄膜加热器。简单的单层碳纳米管薄膜加热器和双层碳纳米管薄膜加热器在波长550 nm处的最大温度分别为48和64 °C，透过率分别为73%和64%，而单层碳纳米管片/石墨烯/聚对苯二甲酸乙二酯（PET）和石墨烯/单层碳纳米管片/PET混合加热器在波长550 nm处的最大温度分别为81和85 °C，透过率分别为68%和71%。10000次弯曲循环测试表明，石墨烯/单层碳纳米管片/PET加热器具有良好的机械和热稳定性。此外，除霜测试以及使用9 V电池进行的便携式加热证明了将这种混合加热器用于车辆除霜、便携式加热和可穿戴设备的可能性。
