Barrett, The Honors College Thesis/Creative Project Collection
Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.
Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.
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In the last several years, there has been interest in the development of flexible batteries as a substitute for traditional Li-ion batteries. Flexible batteries can fold, bend, and twist; studies have shown that mechanical stresses and fatigue may decrease battery performance and cause defects. In this paper, the viability of producing a mechanical fatigue-testing device from 3D printed and other off-the-shelf components was explored. The device was made using a servomotor and LCD screen controlled by a programmed Arduino board, and successfully met the expectations to be cheap, easily reproducible, versatile, and applicable to the testing of battery components. In a proof-of-concept test, the device was used to perform repeated folding tests on lithium cobalt oxide cathodes in different configurations, which were then characterized using a laser microscope. 3D topographical renderings suggested that bending at acute angles induces defects on the surface of the electrode where the electrode is creased. In future work, the device will be used to further explore the effect of mechanical fatigue on Li-ion battery components.