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Articles 1 - 3 of 3
Full-Text Articles in Materials Chemistry
Organic-Inorganic Halide Perovskite Nanocrystals And Solar Cells, Rui Guo
Organic-Inorganic Halide Perovskite Nanocrystals And Solar Cells, Rui Guo
FIU Electronic Theses and Dissertations
A great challenge facing humanity in the 21st century is finding inexhaustible and inexpensive energy sources to power the planet. Renewable energies are the best solutions because of their abundance, diversity, and pollution-free emission. Solar energy is the cleanest and most abundant renewable energy source available. In the continuing quest for efficient and low-cost solar cells, perovskite solar cells (PSCs) have emerged as a potential replacement for silicon solar cells. Since 2009, the record efficiencies of PSCs have been skyrocketing from 3.8 % to 25.2 % and are now approaching the theoretical limit. Along with the three-dimensional perovskites used …
Hybrid Electrochemical Capacitors: Materials, Optimization, And Miniaturization, Richa Agrawal
Hybrid Electrochemical Capacitors: Materials, Optimization, And Miniaturization, Richa Agrawal
FIU Electronic Theses and Dissertations
With the ever-advancing technology, there is an incessant need for reliable electrochemical energy storage (EES) components that can provide desired energy and power. At the forefront of EES systems are electrochemical capacitors (ECs), also known as supercapacitors that typically have higher power and superior cycle longevity but lower energy densities than their battery counterparts. One of the routes to achieve higher energy density for ECs is using the hybrid EC configuration, which typically utilizes a redox electrode coupled with a counter double-layer type electrode.
In this dissertation, both scale-up (coin-cell type) as well as scale-down (on-chip miniaturized) hybrid ECs were …
Hybrid Polymer Electrolyte For Lithium-Oxygen Battery Application, Amir Chamaani
Hybrid Polymer Electrolyte For Lithium-Oxygen Battery Application, Amir Chamaani
FIU Electronic Theses and Dissertations
The transition from fossil fuels to renewable resources has created more demand for energy storage devices. Lithium-oxygen (Li-O2) batteries have attracted much attention due to their high theoretical energy densities. They, however, are still in their infancy and several fundamental challenges remain to be addressed. Advanced analytical techniques have revealed that all components of a Li-O2 battery undergo undesirable degradation during discharge/charge cycling, contributing to reduced cyclability. Despite many attempts to minimize the anode and cathode degradation, the electrolyte remains as the leading cause for rapid capacity fading and poor cyclability in Li-O2 batteries. In this …