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

Title: Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm

Abstract

A process is described for combining at compatible cell geometries and current densities the electrowinning of a free metal element on a cathode in a catholytic electrolyte in a cell in which there is an anode with an anolytic electrolyte with a cationic permselective membrane between the catholytic electrolyte and anolytic electrolyte thereby forming a catholytic half-cell compartment and an anolytic half-cell compartment. The voltage for the combined catholytic half-cell and anolytic half-cell is reduced greater than 50% as compared to the sum of the cell voltages of two independently operating nonmembrane cells using an electrolyte selected from the catholytic electrolyte or the anolytic electrolyte and with water electrolysis at the anode. The process consists of (a) introducing a metal sulfate salt into the catholytic electrolyte in the half-cell catholytic compartment (b) introducing an alkali metal chlorate and an alkali metal perchlorate into the anolytic electrolyte in the half-cell anolytic compartment; and (c) applying an electromotive force across the cathode and anode whereby an oxidation electrochemical reaction occurs at the anode to produce a perchlorate while the free metal element of the metal salt is deposited at the cathode.

Inventors:
;
Publication Date:
OSTI Identifier:
7037332
Patent Number(s):
US 4627899
Assignee:
Secretary of the Interior, Washington, DC
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 15 Feb 1985
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; ANODES; ELECTROCHEMISTRY; CATHODES; ELECTROMETALLURGY; ELECTROLYTIC CELLS; MEMBRANES; ALKALI METAL COMPOUNDS; CHEMICAL REACTION KINETICS; CHLORATES; CURRENT DENSITY; ELECTRIC POTENTIAL; ELECTROLYTES; ELECTROMOTIVE FORCE; OXIDATION; PERCHLORATES; SULFATES; WATER; CHEMICAL REACTIONS; CHEMISTRY; CHLORINE COMPOUNDS; ELECTRODES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; KINETICS; METALLURGY; OXYGEN COMPOUNDS; REACTION KINETICS; SULFUR COMPOUNDS; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Smith, G R, and Thompson, W R. Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm. United States: N. p., 1986. Web.
Smith, G R, & Thompson, W R. Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm. United States.
Smith, G R, and Thompson, W R. Tue . "Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm". United States.
@article{osti_7037332,
title = {Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm},
author = {Smith, G R and Thompson, W R},
abstractNote = {A process is described for combining at compatible cell geometries and current densities the electrowinning of a free metal element on a cathode in a catholytic electrolyte in a cell in which there is an anode with an anolytic electrolyte with a cationic permselective membrane between the catholytic electrolyte and anolytic electrolyte thereby forming a catholytic half-cell compartment and an anolytic half-cell compartment. The voltage for the combined catholytic half-cell and anolytic half-cell is reduced greater than 50% as compared to the sum of the cell voltages of two independently operating nonmembrane cells using an electrolyte selected from the catholytic electrolyte or the anolytic electrolyte and with water electrolysis at the anode. The process consists of (a) introducing a metal sulfate salt into the catholytic electrolyte in the half-cell catholytic compartment (b) introducing an alkali metal chlorate and an alkali metal perchlorate into the anolytic electrolyte in the half-cell anolytic compartment; and (c) applying an electromotive force across the cathode and anode whereby an oxidation electrochemical reaction occurs at the anode to produce a perchlorate while the free metal element of the metal salt is deposited at the cathode.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {12}
}