Open Access. Powered by Scholars. Published by Universities.®
- Publication
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Electrodeposition Of Mno2 Nanowires On Carbon Nanotube Paper As Free-Standing, Flexible Electrode For Supercapacitors, Shulei Chou, Jia-Zhao Wang, Sau-Yen Chew, Hua Liu, S Dou
Electrodeposition Of Mno2 Nanowires On Carbon Nanotube Paper As Free-Standing, Flexible Electrode For Supercapacitors, Shulei Chou, Jia-Zhao Wang, Sau-Yen Chew, Hua Liu, S Dou
Shulei Chou
MnO2 nanowires were electrodeposited onto carbon nanotube (CNT) paper by a cyclic voltametric technique. The as-prepared MnO2 nanowire/CNT composite paper (MNCCP) can be used as a flexible electrode for electrochemical supercapacitors. Electrochemical measurements showed that the MNCCP electrode displayed specific capacitances as high as 167.5 F g-1 at a current density of 77 mA g-1. After 3000 cycles, the composite paper can retain more than 88% of initial capacitance, showing good cyclability. The CNT paper in the composite acted as a good conductive and active substrate for flexible electrodes in supercapacitors, and the nanowire structure of the MnO2 could facilitate …
The Compatibility Of Transition Metal Oxide/Carbon Composite Anode And Ionic Liquid Electrolyte For The Lithium-Ion Battery, Shulei Chou, Lin Lu, Jiazhao Wang, Md Mokhlesur Rahman, Chao Zhong, Hua Liu
The Compatibility Of Transition Metal Oxide/Carbon Composite Anode And Ionic Liquid Electrolyte For The Lithium-Ion Battery, Shulei Chou, Lin Lu, Jiazhao Wang, Md Mokhlesur Rahman, Chao Zhong, Hua Liu
Shulei Chou
Three types of transition metal oxide/carbon composites including Fe2O3/C, NiO/C and CuO/Cu2O/C synthesized via spray pyrolysis were used as anode for lithium ion battery application in conjunction with two types of ionic liquid: 1 M LiN(SO2CF3)2 (LiTFSI) in 1-ethyl-3-methyl-imidazolium bis(fluorosulfonlyl)imide (EMI-FSI) or 1-methyl-1-propylpyrrolidinium bis(fluorosulfonyl)imide (Py13-FSI). From the electrochemical measurements, the composite electrodes using Py13-FSI as electrolyte show much better electrochemical performance than those using EMI-FSI as electrolyte in terms of reversibility. The Fe2O3/C composite shows the highest specific capacity and the best capacity retention (425 mAh g−1) under a current density of 50 mA g−1 for up to 50 cycles, …
Sno2-Coated Multiwall Carbon Nanotube Composite Anode Materials For Rechargeable Lithium-Ion Batteries, Lukman Noerochim, Jiazhao Wang, Shulei Chou, Huijun Li, Hua Liu
Sno2-Coated Multiwall Carbon Nanotube Composite Anode Materials For Rechargeable Lithium-Ion Batteries, Lukman Noerochim, Jiazhao Wang, Shulei Chou, Huijun Li, Hua Liu
Shulei Chou
SnO2-coated multiwall carbon nanotube (MWCNT) nanocomposites were synthesized by a facile hydrothermal method. The as-prepared nanocomposites were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). The SnO2/MWCNT composites, when combined with carboxymethyl cellulose (CMC) as a binder, show excellent cyclic retention, with the high specific capacity of 473 mAh g−1 beyond 100 cycles, much greater than that of the bare SnO2 which was also prepared by the hydrothermal method in the absence of MWCNTs. The enhanced capacity retention could be mainly attributed to …
Empirical Modelling Of Force Profiles Produced During Drilling Of Carbon Composites, Christopher Cook, Gursel Alici, Marta Fernandes
Empirical Modelling Of Force Profiles Produced During Drilling Of Carbon Composites, Christopher Cook, Gursel Alici, Marta Fernandes
Christopher Cook
No abstract provided.
Robotic Drilling Of Carbon Fibre, Marta Fernandes, Steve Gower, Friso Deboer, Christopher Cook
Robotic Drilling Of Carbon Fibre, Marta Fernandes, Steve Gower, Friso Deboer, Christopher Cook
Christopher Cook
This paper describes ongoing research in control of robotic drilling using carbon fiber composites. This work has been motivated by the aircraft industry where there is a significant interest in automating part of the production process to improve productivity and consistency. The requirements for robotic drilling as well as the problems inherent in drilling composites are addressed in this paper. Forces and moments produced during the drilling process are measured and analyzed in order to develop a suitable control technique.