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Full-Text Articles in Materials Chemistry
Toward High Performance Nanocarbon Fibers, Michaela R. Pfau
Toward High Performance Nanocarbon Fibers, Michaela R. Pfau
Master's Theses
High performance carbon fibers (CFs) have been a commercially available since their commercial boom in the 1970s, and are generally produced via carbonization of poly (acrylonitrile) (PAN). More recently, carbon nanomaterials like graphene and carbon nanotubes (CNTs) have been discovered and have shown excellent mechanical, thermal, and electrical properties due to their sp2 carbon repeating structure. Graphene and CNTs can both be organized into macroscopic fibers using a number of different techniques, resulting in fibers with promising mechanical performance that can be readily multifunctionalized. In some cases, the two materials have been combined, and the resulting hybrid fibers have …
Fabrication And Characterization Of A Vertically-Oriented Graphene Supercapacitor, Patrick R. Rice, Jiaxin Cui, Ahmad Badr, Michael M. Oye, Jessica E. Koehne, Meyya Meyyappan
Fabrication And Characterization Of A Vertically-Oriented Graphene Supercapacitor, Patrick R. Rice, Jiaxin Cui, Ahmad Badr, Michael M. Oye, Jessica E. Koehne, Meyya Meyyappan
STAR Program Research Presentations
Supercapacitors, otherwise known as electrical double layer capacitors, are a new type of electrochemical capacitor whose storage capacity is governed by two principals: the electrostatic storage achieved by a separation of charge at the interface of an electrode with an electrolytic solution, and pseudocapacitance, whose electrical energy is achieved by faradaic redox reactions. This project reports the synthesis and characterization of vertically-oriented graphene grown on copper substrates as electrodes in electric double-layer capacitor. Graphene is a two-dimensional pure carbon material with a high potential for energy storage. With vertically-grown graphene, an exponentially-larger surface area is made available, allowing an increase …
Synthesis And Characterization Of Graphene Oxide, Jeremy A. Waddell, Arthur Cheng, Bin Chen
Synthesis And Characterization Of Graphene Oxide, Jeremy A. Waddell, Arthur Cheng, Bin Chen
STAR Program Research Presentations
Graphene, a single atomic layer of sp2 carbon atoms, has gotten a lot of attention from the scientific community because of its excellent mechanical and electronic properties. The mechanical exfoliation methods used to obtain graphene nanosheets are not effective for large scale manufacturing, so scalable synthesis approaches from structurally similar compounds are of great scientific interest. Graphene oxide is one such compound which is synthesized through the oxidation of graphite powder. The oxidation was performed using a modification of the previous experimental procedure. After synthesis, the powder was fabricated into graphene oxide films through vacuum filtration and transfer to …