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Title: Polyoxometalate flow battery

Abstract

Flow batteries including an electrolyte of a polyoxometalate material are disclosed herein. In a general embodiment, the flow battery includes an electrochemical cell including an anode portion, a cathode portion and a separator disposed between the anode portion and the cathode portion. Each of the anode portion and the cathode portion comprises a polyoxometalate material. The flow battery further includes an anode electrode disposed in the anode portion and a cathode electrode disposed in the cathode portion.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1242982
Patent Number(s):
9,287,578
Application Number:
13/760,956
Assignee:
Sandia Corporation (Albuquerque, NM) SNL-A
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Feb 06
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Anderson, Travis M., and Pratt, Harry D. Polyoxometalate flow battery. United States: N. p., 2016. Web.
Anderson, Travis M., & Pratt, Harry D. Polyoxometalate flow battery. United States.
Anderson, Travis M., and Pratt, Harry D. Tue . "Polyoxometalate flow battery". United States. doi:. https://www.osti.gov/servlets/purl/1242982.
@article{osti_1242982,
title = {Polyoxometalate flow battery},
author = {Anderson, Travis M. and Pratt, Harry D.},
abstractNote = {Flow batteries including an electrolyte of a polyoxometalate material are disclosed herein. In a general embodiment, the flow battery includes an electrochemical cell including an anode portion, a cathode portion and a separator disposed between the anode portion and the cathode portion. Each of the anode portion and the cathode portion comprises a polyoxometalate material. The flow battery further includes an anode electrode disposed in the anode portion and a cathode electrode disposed in the cathode portion.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 15 00:00:00 EDT 2016},
month = {Tue Mar 15 00:00:00 EDT 2016}
}

Patent:

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  • Redox flow batteries including a half-cell electrode chamber coupled to a current collecting electrode are disclosed herein. In a general embodiment, a separator is coupled to the half-cell electrode chamber. The half-cell electrode chamber comprises a first redox-active mediator and a second redox-active mediator. The first redox-active mediator and the second redox-active mediator are circulated through the half-cell electrode chamber into an external container. The container includes an active charge-transfer material. The active charge-transfer material has a redox potential between a redox potential of the first redox-active mediator and a redox potential of the second redox-active mediator. The active charge-transfermore » material is a polyoxometalate or derivative thereof. The redox flow battery may be particularly useful in energy storage solutions for renewable energy sources and for providing sustained power to an electrical grid.« less
  • A redox flow battery utilizing two, three-electron polyoxometalate redox couples (SiV V 3W VI 9O 40 7–/SiV IV 3W VI 9O 40 10- and SiV IV 3W VI 9O 40 10-/SiV IV 3W V 3W VI 6O 40 13-) was investigated for use in stationary storage in either aqueous or non-aqueous conditions. The aqueous battery had coulombic efficiencies greater than 95% with relatively low capacity fading over 100 cycles. Infrared studies showed there was no decomposition of the compound under these conditions. The non-aqueous analog had a higher operating voltage but at the expense of coulombic efficiency. The spontaneous formationmore » of these clusters by self-assembly facilitates recovery of the battery after being subjected to reversed polarity. Polyoxometalates offer a new approach to stationary storage materials because they are capable of undergoing multi-electron reactions and are stable over a wide range of pH values and temperatures.« less
  • A battery and battery container having air-flow passages through them are described. The container includes partitions separating the cells of the battery, the partitions each being comprised of a pair of spaced-apart parallel partition walls defining a narrow, generally planar air flow passage between the cells of the battery. The spaced-apart partition walls are integrally joined together at a location adjacent a central portion which includes an aperure to permit intercell welding of adjacent cells.
  • Cells are fed in series with an alkaline solution containing zinc in suspension and electrically connected in series. The cells are grouped in modules fed in parallel with the solution and electrically connected in series, each module being fed with the solution through an inlet pipe and an outlet pipe. Electrolytic resistors are connected in the hydraulic circuit of each pipe to maintain a potential difference in the solution between the modules and a tank for storing the solution. 12 figures.
  • A novel dual flow battery configuration is provided comprising an aqueous hydrogen peroxide catholyte, an aqueous anolyte, a porous solid electrocatalyst capable of reducing said hydrogen peroxide and separating said anolyte, and an aluminum anode positioned within said anolyte. Separation of catholyte and anolyte chambers prevents hydrogen peroxide poisoning of the aluminum anode.