Nitrogen-doping carbon nanotubes/graphene composites modified by strontium titanate/aluminum oxide as electrode materials of solid capacitors

• Main Authors: WU, PO-JUNG, 吳柏融
• Other Authors: LIN, CHUEN-CHANG
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/w8jkpe

碩士 === 國立雲林科技大學 === 化學工程與材料工程系 === 106 === In this experiment, a copper catalyst was deposited on a copper foil substrate by liquid phase deposition on a copper foil by chemical vapor deposition (CVD). In this study, two methods were employed to form N-doped CNTs/ graphene. (1) N-doped CNTs/ graphene bundle arrays were synthesized in a CVD system with a mixture of C2H2 and ammonia (NH3). (2) After the synthesis of CNTs/ graphene bundle arrays by CVD, the samples were transferred to another chamber for nitrogen plasma treatment to form nitrogen-doped vertically aligned CNTs/ graphene bundle arrays. Better preparation of CNTs / graphene composite material conditions for Ammonia flow rate 60 sccm, growth time 10 minute. and then aluminum oxide thin film is formed by chemical liquid phase deposition,coated solid electrolyte PEDOT,.finally, assembling a capacitor CR2032. As a result of CNTs/graphene composite electrode material, the capacitance is 2394.5μF/cm2 and the rate of decline is 18.1%；Better preparation of the Al2O3 / CNTs / graphene composites were by chemical liquid phase deposition (LPD) to grow the SrTiO3 thin film. Better preparation of the titanium dioxide film were 4.5 hours, the heat treatment temperature was 600℃, Coated with solid electrolyte PEDOT, and then assembled into a capacitor CR2032. As a result of the SrTiO3 / Al2O3 / CNTs / graphene c composite electrode material, the capacitance is 13425.7μF/cm2 and the rate of decline is14.13 %. Keywords：Chemical vapor deposition、Liquid-Phase Deposition、Carbon nanotubes、Graphene、Nitrogen doped、Al–Ti composite oxide films、Solid capacitor