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Full-Text Articles in Engineering

Strategies For The Stabilization Of Metal Anodes For Li And Na Metal Batteries, Yang Zhao Dec 2018

Strategies For The Stabilization Of Metal Anodes For Li And Na Metal Batteries, Yang Zhao

Electronic Thesis and Dissertation Repository

Li-metal batteries (LMBs) and Na-metal batteries (NMBs) are considered as the promising candidates to replace the conventional Li-ion batteries (LIBs) due to their high theoretical energy density. For LMBs and NMBs, Li metal and Na metal are the ultimate choices to achieve their high energy density due to the high specific capacity, low electrochemical potential and lightweight. However, as alkali metals, both Li and Na metal anodes suffer from serious challenges including 1) Li/Na dendrite formations and short circuits; 2) Low Coulombic efficiency (CE) and poor cycling performance; and 3) Infinite volume changes. This thesis mainly focuses on the design …


Development Of Nanostructures By Atomic And Molecular Layer Deposition, Andrew P. Lushington Apr 2018

Development Of Nanostructures By Atomic And Molecular Layer Deposition, Andrew P. Lushington

Electronic Thesis and Dissertation Repository

Atomic layer deposition (ALD) is a thin film deposition technique that has a rich history of being an enabling technique. This vapor phase deposition process can produce a variety of thin films and nanostructures. ALD is based on sequential, self-limiting reactions and provides angstrom level control over film growth. Furthermore, ALD allows for conformal deposition on high-aspect ratio structures and can provide tunable film composition. As nanotechnology marches forward, the development of nanomaterials has significantly advanced. Additional functionality can be imparted to nanomaterials by using surface modification techniques. Given the advantages of ALD, this technique has become a powerful tool …


Fabrication And Applications Of Printed And Handwriting Electronics, Tengyuan Zhang Mar 2018

Fabrication And Applications Of Printed And Handwriting Electronics, Tengyuan Zhang

Electronic Thesis and Dissertation Repository

The accelerating arrival of the Internet of Things (IoT) era creates a rapidly growing demand for printed electronic. As a low-cost and green substrate, cellulose paper has become the most attractive choice for the printing of sustainable and disposable electronics. However, manufacture of high quality circuits with high conductivity on cellulose paper remains a challenge due to the substrate’s high porosity and roughness. In this thesis, a method for facile fabrication of hybrid copper-fiber highly conductive features on low-cost cellulose paper with strong adhesion and enhanced bending durability is introduced. With three-dimensional electroless deposition (ELD) of copper, the as-fabricated circuits …