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首页> 外文期刊>Journal of nanomaterials >Design, Manufacturing, and Characterization of High-Performance Lightweight Bipolar Plates Based on Carbon Nanotube-Exfoliated Graphite Nanoplatelet Hybrid Nanocomposites
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Design, Manufacturing, and Characterization of High-Performance Lightweight Bipolar Plates Based on Carbon Nanotube-Exfoliated Graphite Nanoplatelet Hybrid Nanocomposites

机译：基于碳纳米管-脱落石墨纳米片杂化纳米复合材料的高性能轻质双极板的设计，制造和表征

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We report a study on manufacturing and characterization of a platform material for high-performance lightweight bipolar plates for fuel cells based on nanocomposites consisting of carbon nanotubes (CNTs) and exfoliated graphite nanoplatelets (xGnPs). The experiments were designed and performed in three steps. In the preexperimental stage, xGnP-epoxy composite samples were prepared at various xGnP weight percentages to determine the maximum processable nanofiller concentration. The main part of the experiment employed the statistics-based design of experiments (DOE) methodology to identify improved processing conditions and CNT : xGnP ratio for minimized electrical resistivity. In the postexperimental stage, optimized combinations of material and processing parameters were investigated. With the aid of a reactive diluent, 20 wt.% was determined to the be maximum processable carbon nanomaterial content in the epoxy. The DOE analyses revealed that the CNT : xGnP ratio is the most dominant factor that governs the electrical properties, and its implications in relation to CNT-xGnP interactions and microstructure are elucidated. In addition, samples fabricated near the optimized condition revealed that there exists an optimal CNT : xGnP ratio at which the electrical performance can be maximized. The electrical and mechanical properties of optimal samples suggest that CNT-xGnP hybrid nanocomposites can serve as an alternative material platform for affordable, lightweight bipolar plates.
机译：我们报告了基于碳纳米管（CNT）和片状石墨纳米片（xGnPs）组成的纳米复合材料的燃料电池高性能轻质双极板平台材料的制造和表征研究。实验分三步进行设计和执行。在实验前阶段，以各种xGnP重量百分比制备xGnP-环氧树脂复合材料样品，以确定最大可加工纳米填料浓度。实验的主要部分采用了基于统计的实验设计（DOE）方法，以确定改进的加工条件和CNT：xGnP比，以最大程度地降低电阻率。在实验后阶段，研究了材料和加工参数的优化组合。借助于反应性稀释剂，确定20％（重量）是环氧树脂中可加工碳纳米材料的最大含量。 DOE分析显示，CNT：xGnP比是控制电性能的最主要因素，并且阐明了其与CNT-xGnP相互作用和微观结构的关系。另外，在最佳条件下制造的样品表明存在最佳的CNT：xGnP比，在该比下可以使电性能最大化。最佳样品的电气和机械性能表明，CNT-xGnP杂化纳米复合材料可作为负担得起的轻质双极板的替代材料平台。

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