skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermal regeneration of an electrochemical concentration cell

Abstract

A system and method are described for thermally regenerating an electrochemical concentration cell having first and second aluminum electrodes respectively positioned in contact with first and second electrolytes separated by an ion exchange member, the first and second electrolytes being composed of different concentrations of an ionic solvent and a salt, preferably an aluminum halide. The ionic solvent may be either organic or inorganic with a relatively low melting point, the ionic solvent and the salt form a complex wherein the free energy of formation of said complex is less than about -5 kcal/mole. A distillation column using solar heat or low grade industrial waste heat receives the first and second electrolytes and thermally decomposes the salt-solvent complex to provide feed material for the two half cells.

Inventors:
;
Issue Date:
OSTI Identifier:
5329037
Application Number:
ON: DE82016650
Assignee:
Dept. of Energy ERA-07-043917; EDB-82-126844
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 14 SOLAR ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; REGENERATIVE FUEL CELLS; DESIGN; ALUMINIUM; ELECTRODES; ELECTROLYTES; HEAT SOURCES; HYDROGEN; ION EXCHANGE MATERIALS; LITHIUM; LITHIUM HYDRIDES; MEMBRANES; MERCURY; PYROLYSIS; SODIUM; SOLAR ENERGY CONVERSION; WASTE HEAT; WASTE HEAT UTILIZATION; ALKALI METAL COMPOUNDS; ALKALI METALS; CHEMICAL REACTIONS; CONVERSION; DECOMPOSITION; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELEMENTS; ENERGY; ENERGY CONVERSION; FUEL CELLS; HEAT; HYDRIDES; HYDROGEN COMPOUNDS; LITHIUM COMPOUNDS; MATERIALS; METALS; NONMETALS; THERMOCHEMICAL PROCESSES; WASTE PRODUCT UTILIZATION; WASTES; 300501* - Fuel Cells- Design & Development; 140500 - Solar Energy Conversion; 320304 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization

Citation Formats

Krumpelt, M., and Bates, J.K. Thermal regeneration of an electrochemical concentration cell. United States: N. p., 1980. Web.
Krumpelt, M., & Bates, J.K. Thermal regeneration of an electrochemical concentration cell. United States.
Krumpelt, M., and Bates, J.K. Fri . "Thermal regeneration of an electrochemical concentration cell". United States.
@article{osti_5329037,
title = {Thermal regeneration of an electrochemical concentration cell},
author = {Krumpelt, M. and Bates, J.K.},
abstractNote = {A system and method are described for thermally regenerating an electrochemical concentration cell having first and second aluminum electrodes respectively positioned in contact with first and second electrolytes separated by an ion exchange member, the first and second electrolytes being composed of different concentrations of an ionic solvent and a salt, preferably an aluminum halide. The ionic solvent may be either organic or inorganic with a relatively low melting point, the ionic solvent and the salt form a complex wherein the free energy of formation of said complex is less than about -5 kcal/mole. A distillation column using solar heat or low grade industrial waste heat receives the first and second electrolytes and thermally decomposes the salt-solvent complex to provide feed material for the two half cells.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {5}
}