13 Results for 'kyoung-shin choi'
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Technology
ELECTROCHEMICAL PHOSPHATE REMOVAL AND RECOVERY CELLS
UW-Madison researchers have developed an electrochemical system that can not only selectively remove phosphate from a phosphate containing solution but also recover it as H3PO4 without needing additio...
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Kyoung-Shin Choi, Dohwan Nam, Ryan Belson | P230011US01
Technology
AQUEOUS ENERGY STORAGE SYSTEMS WITH DESALINATION CAPABILITIES
UW-Madison researchers disclose a new aqueous rechargeable Na-ion battery (ARNB) system that can operate in seawater and achieve seawater desalination, which drastically increases the benefits offered...
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Kyoung-Shin Choi, Dohwan Nam, Margaret Lumley | P210082US01
Technology
Electrodialysis Cells with Reduced Operating Voltage for Seawater Desalination
Seawater desalination is a promising solution for the global water crisis. However, the current methods of distillation and reverse osmosis are expensive and energy-intensive.Electrodialysis is an alt...
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Kyoung-Shin Choi, Dohwan Nam, Dong Ki Lee | P180373US01
Technology
Solar Cells for Reducing HMF to Valuable Platform Chemicals
A biomass-derived chemical called HMF (5-hydroxymethylfurfural) can be turned into a variety of industrial molecules. For example, it can be reduced to BHMF or 2,5-bis(hydroxymethyl) furan, an importa...
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Kyoung-Shin Choi, John Roylance, Stephen Kubota | P150141US01
Technology
Solar Cells Turn HMF to Valuable Platform Molecules
Photoelectrochemical cells (PECs) use solar energy to produce fuels, much as nature does through photosynthesis. In a typical PEC, fuels are formed by reduction reactions at the cathode. For example, ...
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Kyoung-Shin Choi, Hyun Gil Cha | P150132US01
Technology
More Efficient Water-Splitting Cells
N-type bismuth vanadate (BiVO4) has emerged as a promising photoanode for use in solar water-splitting cells given its favorable light absorption and conduction band characteristics. To date, however,...
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Kyoung-Shin Choi, Tae Woo Kim | P140325US01
Technology
Rechargeable Desalination Battery
Access to fresh water is a pressing geopolitical issue and technological challenge. Desalination is a potentially viable solution considering the abundance of seawater on Earth. While reverse osmosis ...
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Kyoung-Shin Choi, Dohwan Nam | P170083US01
Technology
Electrochemical Reductive Amination of Furfural
5-Hydroxymethylfurfural (HMF) has been called the “sleeping giant” of building block chemistry and listed among the top 10 biomass-based platform chemicals by the U.S Department of Energy. Reducti...
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Kyoung-Shin Choi, John Roylance | P170001US01
Technology
Electrochemical Oxidation Of 5-Hydroxymethylfurfural Using Copper-Based Anodes
Electrochemical cells for the oxidation of 5-hydroxymethylfurfural are provided. Also provided are methods of using the cells to carry out the oxidation reactions. The electrochemical cells and method...
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Kyoung-Shin Choi, Dohwan Nam | P180020US01
Technology
Electrochemical Oxidation Of Aromatic Aldehydes In Acidic Media
Methods for electrochemically oxidizing aromatic aldehydes, such as furfural and furfural derivatives, to carboxylic acids in acidic solutions are provided. Also provided are electrochemical cells for...
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Kyoung-Shin Choi, Stephen Kubota | P180052US01
Technology
TANDEM ELECTRODIALYSIS CELL SYSTEMS BASED ON THE USE OF REDOX COUPLES
UW researchers have developed a new type of tandem electrodialysis (ED) cell where salination is performed in one cell and desalination in the other with circulation of the anolyte and catholyte to av...
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Kyoung-Shin Choi, Dohwan Nam | P210217US01
Technology
ELECTROCHEMICAL LITHIUM EXTRACTION AND RECOVERY
UW-Madison researchers have developed a new electrochemical method to recover Li from spent lithium-ion battery (LIB) materials as high purity Li-containing chemicals with a high yield in an efficient...
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Kyoung-Shin Choi, Dohwan Nam, Brian Foster, Ryan Belson, Princess Merenini | P240162US01
Technology
ELECTROCHEMICAL HYDROGENOLYSIS OF CARBONYL GROUPS IN ALDEHYDES AND KETONES USING ZINC CATHODES
UW-Madison researchers have developed a new process, termed electrochemical Clemmensen reduction, in which an electrochemical cell is used to perform hydrogenolysis and Zn is used as an electrocatalyt...
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Kyoung-Shin Choi, Xin Yuan, Jonah Eisenberg | P230265US01