Preparation and Electrochemical Properties of Functionalized Multi-Walled Carbon Nanotubes @ Carbon Quantum Dots @ Polyaniline Ternary Composite Electrode Materials

Applied Sciences

ChulGyu Jhun¹  Tianhao Hu²  Ye Ge²  Youyang Chen²  Zhihao Hu²  Jing Wang²  Guotao Dong² 

[1] School of Electronic Display Engineering, Hoseo University 20, Hoseo-ro 79beon-gil, Baebang-eup, Asan City 31499, Korea;School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China;

关键词: carbon quantum dots;    functionalized multi-walled carbon nanotubes;    polyaniline;    composite electrode material;    specific capacitance;   

DOI  :  10.3390/app10165462

来源: DOAJ

【 摘 要 】

Based on various carbon nano materials, the ternary composite functionalized carbon nanotubes (FMWCNTs) @ carbon quantum dots (CQDs) @ polyaniline (PANI) was prepared by in-situ polymerization and hydrothermal method. The carbon-based material was made into an electrode sheet. The morphology and microscopic nanostructures were characterized by FTIR, field emission scanning electron microscopy and field emission transmission electron microscopy. Cyclic voltammetry and the galvanostatic charge discharge method was adapted to study the electrochemical properties of these active materials. Our results showed that the specific capacitance of FMWCNTs @ CQDs @ PANI was as high as 534 F/g, while it was 362 F/g, 319 F/g and 279 F/g for PANI @ FMWCNTs, PANI @ CQDs and polyaniline. This means that the specific capacitance of FMWCNTs @ CQDs @ PANI is increased by 47.5%, 67.4% and 91.4% comparing with the capacitance of PANI @ FMWCNTs, PANI @ CQDs and polyaniline, respectively. Moreover, the specific capacitance retention rate of the ternary active electrode after 1000 times of constant current charge and discharge cycle reached 86%, while it was 60% for PANI @ FMWCNTs, 72% for PANI @ CQDs and 65% for polyaniline.

【 授权许可】

Unknown