Roll-to-roll production of spray coated N-doped carbon nanotube electrodes for supercapacitors PROJECT TITLE :Roll-to-roll production of spray coated N-doped carbon nanotube electrodes for supercapacitorsABSTRACT:Although carbon nanomaterials are being increasingly used in energy storage, there has been a lack of inexpensive, continuous, and scalable synthesis methods. Here, we present a scalable roll-to-roll (R2R) spray coating process for synthesizing randomly oriented multi-walled carbon nanotubes electrodes on Al foils. The coin and jellyroll type supercapacitors comprised such electrodes yield high power densities (∼700 mW/cm3) and energy densities (1 mW h/cm3) on par with Li-ion thin film batteries. These devices exhibit excellent cycle stability with no loss in performance over more than a thousand cycles. Our cost analysis shows that the R2R spray coating process can produce supercapacitors with 10 times the energy density of conventional activated carbon devices at ∼17% lower cost. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Ultrafast pulse amplification in mode-locked vertical external-cavity surface-emitting lasers Analysis of electron capture process in charge pumping sequence using time domain measurements
