Summaries by Inventor Ramani, Vijay

A Highly Efficient Brine Electrolyzer
Gayen, Pralay ; Ramani, Vijay ; Sankarasubramanian, Shrihari

— Technology Description Researchers in the Ramani lab at Washington University have developed an electrolyzer capable of selectively splitting salty or brackish water into ultra-pure hydrogen and oxygen at high operating power densities. Originally designed to tap the perchlorate-rich water on the …

High Performance Direct Methanol and Direct Ethanol Fuel Cells with Microscale Bipolar Interface
Ramani, Vijay ; Sankarasubramanian, Shrihari ; Wang, Zhongyang

— Technology Description Engineers in Prof. Vijay Ramani’s laboratory have developed a biopolar interface membrane to prevent fuel crossover and improve the performance of direct methanol and direct ethanol fuel cells (DMFC and DEFC). This membrane separator is designed to maintain a steep pH …

Low cost electrode decoupled redox flow batteries for grid-scale energy storage
Ramani, Vijay ; Sankarasubramanian, Shrihari

— Technology Description Engineers in Prof. Vijay Ramani’s laboratory have developed an electrode decoupled redox flow battery (RFB) with stable electrolyte materials that can generate power densities comparable to all-Vanadium RFBs at less than half the cost. RFBs are a promising option for …

Low cost, high performance anion exchange membranes for grid-scale energy storage and other electrochemical devices
Parrondo, Javier ; Ramani, Vijay ; Wang, Zhongyang

— Technology Description Engineers in Prof. Vijay Ramani’s laboratory have developed a variety of robust, versatile anion exchange membrane (AEM) materials that achieve high performance through superior ion selectivity. These mechanically and chemically stable membranes have the potential to d…

Triblock Copolymer Based Anion Exchange Membranes (Aems) As Separators in Electrochemical Devices
Parrondo, Javier ; Ramani, Vijay ; Wang, Zhongyang

— Background: Anion exchange membranes (AEMs) are used as separators in redox flow batteries, water electrolyzers, water desalination systems, fuel cells, and other electrochemical devices. Current AEMs suffer from issues with cost, poor stability and low perm selectivity. For example, current redox flow batteries are not economical or suffer from capacity loss upon cycling due to cross species contamination while using less expensive decoupled chemistries.An advanced, tunable AEM has been developed with dramatically reduced cost and improved performance relative to industry leading AEMs. High ionic conductivity, chemical stability and enhanced mechanical performance have been shown. The technology includes tunable membrane compositions, mechanical re…


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