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Conductivity controlled bipolar power devices
Background
Dr. Alex Q. Huang has developed a new power semiconductor technology, a Conductivity Controlled Bipolar Transistor (CCBT), with primary application in power electronic converters. Dr. Huang is the Dula D. Cockrell Centennial Chair in Engineering at the Department of Electrical and Computer Engineering and a professor at The University of...
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Direct electrodeposition of Li from Li ions enhanced by electromagnetism
Background
Dr. Thomas C. Underwood and his team have developed a technology by which brine phase Li+ ions are converted directly to Li metals through electromagnetic-enhanced electroreduction, which is available for licensing. Dr. Underwood is an assistant professor in the Department of Aerospace Engineering and Engineering Mechanics at UT Austin with...
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Methods for synthesizing and stabilizing amorphous lithium fluoride for use as interfacial protective layers in lithium rechargeable batteries
Problem
Electrolytes are susceptible to reductive decomposition on the surface of negative electrodes, leading to the formation and growth of a solid-electrolyte interphase (SEI) layer which significantly affects battery performance. In particular, Li dendrite growth during cycling can result in short-circuiting of the battery if the dendrite reaches...
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Template for achieving anode-free and anodeless batteries
Problem
Anodeless or anode-free liquid, solid, and hybrid liquid-solid batteries hold tremendous promise, offering lower cost in parallel to over 50% higher energy by weight and by volume. However because of the poor Coulombic efficiency (CE), which leads to poor cathode utilization, rapid capacity fade during cycling, an unstable solid electrolyte...
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Coated separator for improved battery performance
Background
Dr. David Mitlin and his team have developed a multifunctional separator that allows for the stable cycling of anodes and secondary batteries, including metal anodes and metal batteries (MB). Dr. Mitlin is a David Allen Cockrell Endowed Professor at the Walker Department of Mechanical Engineering at UT Austin, with studies focused on energy...
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Negative enthalpy collector coatings to enhance stability of metal anodes
Problem
Anodeless or anode-free liquid, solid and hybrid liquid-solid batteries hold tremendous promise, offering lower cost in parallel to over 50% higher energy by weight and by volume. However, because of the poor Coulombic efficiency (CE)—which leads to poor cathode utilization, rapid capacity fade during cycling, an unstable solid electrolyte...
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A low-cost and effective additive for polymer electrolytes in rechargeable all-solid-state batteries
All-solid-state batteries are the next logical step to improve upon the Li+-ion battery for energy storage in portable electronic device. With the desire to advance the per charge driving range of electric vehicles, improvements to the volumetric and gravimetric energy density of the battery packs must be made. The most-direct method of improving the...
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Lithium selective organogels
Background
Lithium (Li) is a highly reactive alkali metal with excellent heat and electrical conductivity properties, making it useful for a variety of industrial applications. Because of Li’s high reactivity, pure elemental Li is not found in nature but is present as a constituent of salts or other compounds found in brines, mineral ores, clays,...
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Novel test system for replicating cylindrical battery thermal runaway
Background
Simulating real-world battery internal failures in a battery system is crucial to test and examine the performance of the designed protective mechanisms that enhance battery safety. The invention is created to be incorporated into a battery system to simulate battery internal failures. Other similar existing tools such as nail penetration...
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A new rechargeable lithium battery cathode architecture
Current Li+-ion batteries require electronically conductive additives within the cathode to maintain electrical contact between the small dispersed active cathode particles responsible for the energy storage reactions in the cell. Additionally, they require a polymer binder to hold the conductive additive and active material together. These two additional...
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