Electrochemical cell
Abstract
An electrochemical cell is described having a bimodal positive electrode, a negative electrode of an alkali metal, and a compatible electrolyte including an alkali metal salt molten at the cell operating temperature. The positive electrode has an electrochemically active layer of at least one transition metal chloride at least partially present as a charging product, and additives of bromide and/or iodide and sulfur in the positive electrode or the electrolyte. Electrode volumetric capacity is in excess of 400 Ah/cm[sup 3]; the cell can be 90% recharged in three hours and can operate at temperatures below 160 C. There is also disclosed a method of reducing the operating temperature and improving the overall volumetric capacity of an electrochemical cell and for producing a positive electrode having a BET area greater than 6[times]10[sup 4] cm[sup 2]/g of Ni. 8 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 5285899
- Patent Number(s):
- 5283135
- Application Number:
- PPN: US 7-901547
- Assignee:
- Univ. of Chicago, IL ()
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 19 Jun 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; MOLTEN CARBONATE FUEL CELLS; DESIGN; ALKALI METAL COMPOUNDS; ELECTRIC CONDUCTIVITY; SURFACE AREA; TRANSITION ELEMENT COMPOUNDS; DIRECT ENERGY CONVERTERS; ELECTRICAL PROPERTIES; ELECTROCHEMICAL CELLS; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; PHYSICAL PROPERTIES; SURFACE PROPERTIES; 300501* - Fuel Cells- Design & Development
Citation Formats
Redey, L I, Vissers, D R, and Prakash, J. Electrochemical cell. United States: N. p., 1994.
Web.
Redey, L I, Vissers, D R, & Prakash, J. Electrochemical cell. United States.
Redey, L I, Vissers, D R, and Prakash, J. Tue .
"Electrochemical cell". United States.
@article{osti_5285899,
title = {Electrochemical cell},
author = {Redey, L I and Vissers, D R and Prakash, J},
abstractNote = {An electrochemical cell is described having a bimodal positive electrode, a negative electrode of an alkali metal, and a compatible electrolyte including an alkali metal salt molten at the cell operating temperature. The positive electrode has an electrochemically active layer of at least one transition metal chloride at least partially present as a charging product, and additives of bromide and/or iodide and sulfur in the positive electrode or the electrolyte. Electrode volumetric capacity is in excess of 400 Ah/cm[sup 3]; the cell can be 90% recharged in three hours and can operate at temperatures below 160 C. There is also disclosed a method of reducing the operating temperature and improving the overall volumetric capacity of an electrochemical cell and for producing a positive electrode having a BET area greater than 6[times]10[sup 4] cm[sup 2]/g of Ni. 8 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 1994},
month = {Tue Feb 01 00:00:00 EST 1994}
}