Graphitic carbon fibers electrochemical performance

The use of a graphite electrode, particularly glassy carbon, is also relatively limited in microfabricated electrochemical sensors. However, thick-film silk-screened graphite electrodes have been used in chemical sensor development, and the use of carbon fiber in microsensor applications has been reported. The purity of the graphite ink for thick-film silk screening is very critical to the performance of the sensor. 

The well-known fact that the rate of electrochemical reactions is proportional to the surface area of the electrode makes ICP electrospun fibers ideal candidates as electrode materials in other small electrochemical devices such as supercapacitors and batteries. The small diameter of the fibers makes it possible for ions to rapidly diffuse between the center of the fiber and the surrounding electrolyte, which should lead to enhanced performance of electrochemical devices constructed from these electrospun fibers. Although no energy storage devices have so far been fabricated that utilize ICP electrospun fiber electrodes, there have been reports of using graphitized polyacrylonitrile electrospun fibers as the electrode material for fabricating carbon-based supercapacitors [186]. 

---