Multi-Scale Energy Systems (MuSES) Laboratory, Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, 815 R. L. Smith Building, 1400 Townsend Drive, Houghton, Michigan 49931, United States.
Langmuir. 2011 Jan 18;27(2):561-9. doi: 10.1021/la103587b. Epub 2010 Dec 20.
Deposition of aligned forests of 1D nanoparticles (carbon nanotubes and MnO(2) nanorods) on conductive, including flexible and transparent, substrates has been achieved at room temperature. The process, named high-voltage electrophoretic deposition (HVEPD), has been enabled by three key elements: high deposition voltage for alignment, low dispersion concentration of the nanoparticles to avoid aggregation, and simultaneous formation of a holding layer by electrodeposition. The effects of key parameters are investigated. The alignment on the vertical direction has been revealed by scanning electron microscopy of the samples, their superhydrophobicity, electrochemical performance, and capability to electrically connect two separated electrodes. Compared with their randomly oriented counterparts, the aligned nanoforests showed higher electrochemical capacitance, lower electrical resistance, and the capability to achieve superhydrophobicity, implicating their potential in a broad range of applications.
一维纳米颗粒（碳纳米管和 MnO(2)纳米棒）在室温下被排列成森林状沉积在导电基底上，包括柔性和透明基底。该过程名为高压电泳沉积（HVEPD），由三个关键要素实现：用于对齐的高沉积电压、避免聚集的纳米颗粒低分散浓度，以及通过电沉积同时形成保持层。研究了关键参数的影响。通过对样品进行扫描电子显微镜观察，揭示了垂直方向上的对齐情况，同时还研究了它们的超疏水性、电化学性能以及电连接两个分离电极的能力。与随机取向的对应物相比，排列的纳米森林表现出更高的电化学电容、更低的电阻以及实现超疏水性的能力，这表明它们在广泛的应用中具有潜力。
