Title:
Designing Multi-Functional Electrodes for Next-Generation Energy Storage Devices
Designing Multi-Functional Electrodes for Next-Generation Energy Storage Devices
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Author(s)
Lee, Seung Woo
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Abstract
Although lithium-ion batteries and supercapacitors have shown rapid
progress over the last two decades, next-generation energy storage applications,
such as fast-evolving portable electronics, electrified propulsion, and loadleveling
for renewable energy systems, require multi-functional energy sources
that have both high-energy and -power, long cycle life, and flexibility, exceeding
the performance of conventional energy storage devices. Aiming towards such
advanced energy storage technologies, Dr. Lee’s research pays particular
attention to harnessing charge storage reactions of nanostructured electrodes
and their nano-fabrication processes. In this presentation, we will discuss our
recent progress on designing multi-functional electrode materials. We will first show that redox-active organic electrodes prepared from earthabundant
organic materials can be promising cathodes for large-scale energy
storage devices. We reveal that these organic electrodes have promising charge
storage properties for both Li- and Na-ion storage. The assembled organic
electrodes are employed as cathodes for hybrid capacitors and Li- and Na-ion
batteries, delivering high capacity with superior power capability and cycling
stability. Thus, these high-performance organic electrodes can be promising
cathodes for large-scale rechargeable batteries or hybrid capacitors. Next, we
will introduce a new self-assembly technique, called a ligand-mediated layer-bylayer
assembly, which can convert the insulating paper or fabric to highly porous
metallic current collectors. Using this technique, we demonstrate the multifunctional
energy storage devices for flexible and wearable energy storage devices.
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Date Issued
2017-11-14
Extent
55:18 minutes
Resource Type
Moving Image
Resource Subtype
Lecture