碳基复合材料模压双极板研究进展

图  7  石墨颗粒、炭黑、碳纤维、碳纳米管增强复合双极板导电性与力学性能原理图。（a）膨胀石墨为唯一导电介质时复合双极板的导电通路；（b）添加石墨颗粒、炭黑、碳纤维、碳纳米管时复合双极板的导电通路；（c）改性碳纤维/碳纳米管表面官能团与树脂官能团形成共价键

Figure  7.  Schematic for the reinforced conductivity and mechanical properties of composite bipolar plate by graphite particles, carbon black, carbon fiber and carbon nanotube: (a) conductive path of composite bipolar plate using expanded graphite as the only conductive medium (b) adding graphite particles, carbon black, carbon fiber and carbon nanotubes; (c) the form of covalent bonds between surface functional groups of modified carbon fiber/carbon nanotube and those of resin