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Electrochemical Metal/Oxygen Cells: A System for Electrical Energy Generation and Chemical Conversion of CO2 to Oxalate

詳細技術說明
We demonstrate an electrochemical cell that uses a metallicaluminum anode and a carbon dioxide/oxygen gas mixture as the active materialin the cathode. This combination provides an electrochemical path forupconverting CO2 through generation electrical energy and an oxalate(C2) species.
*Abstract

 

Technology Overview

We have designed an Al/CO2-O2electrochemical cell based on an ionic liquid and AlCl3 electrolytemelt. This cell design is effective for both capturing CO2 andupconverting the captured CO2 to a C2 species, anoxalate, without the need for a catalyst or high-temperature cell operation.

 

In addition to providing a process forCO2 capture and conversion, when discharged in a CO2-O2atmosphere, this cell can deliver very high discharge capacities (as high as13,000 mA·hour/gCarbon) at a discharge voltage of around 1.4 V whendischarged at a fixed rate of 70 mA/gCarbon.

 

A preliminary life cycle assessment(LCA) has shown promise in reducing the overall CO2 emissions whenintegrating this electrochemical cell into the industrial production ofaluminum metal and oxalic acid.

 

Potential Applications

  • Electrochemical CO2 conversion
  • Facilitation of capture and concentration of CO2
  • Reduction of CO2 emissions during aluminum metal andoxalic acid production

 

Advantages

  • Allows conversion of CO2 to a valuable C2 product
  • Tunable electrochemical properties based on electrolytecomposition
  • Aluminum is safer alternative to Li or Na in electrochemicalcells

 

 

Keywords: CO2 Conversion, CO2 capture & storage, Oleochemicals & Petrochemicals, Storage Devices, alternative & green energy, anode, batteries, battery, catalysts, cathode, chemicals, electrolyte, energy, energy saving, engineering, materials, materials science, metals, physical sciences, raw materials, synthetic methods
*Licensing
Carolyn A. Theodorecat42@cornell.edu607 254 4514
其他

Publications

  • Wajdi I. Al Sadat and Lynden A. Archer.“The O2-assisted Al/CO2 electrochemical Cell: A systemfor CO2 capture/conversion and electric power generation” Science Advances 20 Jul 2016: Vol. 2, no. 7 DOI: 10.1126/sciadv.1600968
國家/地區
美國

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