This thesis is a continuous effort contributed to the field of developing a new type of functional porous materials - Nanocarbon Foam (NCF) by crosslinking multi-walled carbon
nanotubes (MWNTs) into networks in three-dimensional (3D). Synthetic routes and characterizations of NCF, and their applications as strain-gauge sensors and electrode materials in
lithium-air (Li-air) battery are described. In this research, the first accomplishment is proposing a robust methodology for creating superealstic 3D macroscopic NCF with controlled
cellular structure. The key contributions contain: (1) understanding the premise of the design that gives the NCF with desired structure and porosity; (2) designing fabrication protocol
for NCFs with controlled densities and macroscopic structure; (3) fabricating varied NCF with tunable porosity and structures, which in turn will endow the NCF with different
characteristics. This experimental methodology for systematic and quantitative investigation of the processing-structure relationships provides a means for the fabrication optimization of
NCF with desired structures. Though the mechanical, electronic, and thermal properties of CNTs have been extensively studied, for NCF that is a mixture of pristine and functionalized CNTs,
it will not only have the collective behavior of the individual tubes, but will also have properties generated from the interactions between the tubes and engineered components. To
understand the structure-properties relationship of NCF, the second accomplishment is studying the properties of obtained NCFs. Density, specific surface area, porosity, compressive
behavior, mechanical robustness, electrical and electromechanical properties of NCF have been characterized in details. For comparison, properties originated from cellular structures built
of other materials, such as polymeric foam, fiber aerogels, etc., are compared with that of NCF. Moreover, some engineering applications of NCF have been discussed. With the unique
features of NCFs, my proposed future work will focus on understanding porous structure formation and resulted unique properties by the means of scientific modelling. In addition, NCF will
be explored as the skeleton for fabricating hybrid systems. / A Thesis submitted to the Materials Science and Engineering Program in partial fulfillment of the Master of Science. / Fall Semester 2015. / November 5, 2015. / Includes bibliographical references. / Eric Hellstrom, Professor Co-Directing Thesis; Mei Zhang, Professor Co-Directing Thesis; Richard Liang, Committee Member; Zhibin Yu, Committee
Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_291312 |
| Contributors | Liu, Teng (authoraut), Hellstrom, Eric (professor co-directing thesis), Zhang, Mei (professor co-directing thesis), Liang, Zhiyong (Richard) (committee member), Yu, Zhibin (committee member), Florida State University (degree granting institution), Graduate School (degree granting college), Program in Materials Science (degree granting department) |
| Publisher | Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text |
| Format | 1 online resource (119 pages), computer, application/pdf |
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