Electrochemically exfoliated graphene (eeG) layers possess a variety of potential applications, e.g. as susceptor material for contactless induction heating in dynamic electro-magnetic fields, and as flexible and transparent electrode or resistivity heating elements. Spray coating of eeG dispersions was investigated in detail as a simple and fast method to deposit both, thin conducting layers and ring structures on polycarbonate substrates. The spray coating process was examined by systematic variation of dispersion concentration and volume applied to heated substrates. Properties of the obtained layers were characterized by UV-VIS spectroscopy, SEM and Confocal Scanning Microscopy. Electrical conductivity of eeG ring structures was measured using micro-four-point measurements. Modification of eeG with poly(dopamine) and post-thermal treatment yields in the reduction of the oxidized graphene proportion, an increase in electrical conductivity, and mechanical stabilization of the deposited thin layers. The chemical composition of modified eeG layer was analyzed via x-ray photoelectron spectroscopy pointing to the reductive behavior of poly(dopamine). Application oriented experiments demonstrate the direct electric current heating (Joule-Heating) effect of spray-coated eeG layers.

电化学剥落的石墨烯（eeG）层具有多种潜在应用，例如，用作动态电磁场中非接触感应加热的基座材料，以及用作柔性透明电极或电阻率加热元件。对eeG分散体的喷涂进行了详细研究，这是一种在聚碳酸酯基体上沉积薄导电层和环状结构的简单，快速的方法。通过系统地改变分散体浓度和施加到加热基材上的体积来检查喷涂工艺。通过UV-VIS光谱，SEM和共聚焦扫描显微镜表征获得的层的性质。eeG环结构的电导率使用微四点测量法进行测量。用聚（多巴胺）对eeG进行改性和热处理后，可以降低氧化石墨烯的比例，提高电导率，并使沉积的薄层机械稳定。通过X射线光电子能谱分析了改性的eeG层的化学组成，指出了聚多巴胺的还原行为。面向应用的实验证明了喷涂eeG层的直接电流加热（焦耳加热）效果。