Electrochemical cell structure including an ionomeric barrier

DWPI Title: Apparatus used as battery, has electrochemical half-cell having electrolyte, anode comprising vanadium phosphide, and ionomeric barrier comprising polymer with attached cationic functional groups e.g. quaternary ammonium
Abstract: An apparatus includes an electrochemical half-cell comprising: an electrolyte, an anode; and an ionomeric barrier positioned between the electrolyte and the anode. The anode may comprise a multi-electron vanadium phosphorous alloy, such as VPx, wherein x is 1-5. The electrochemical half-cell is configured to oxidize the vanadium and phosphorous alloy to release electrons. A method of mitigating corrosion in an electrochemical cell includes disposing an ionomeric barrier in a path of electrolyte or ion flow to an anode and mitigating anion accumulation on the surface of the anode.
Use: Apparatus is used as battery (claimed) e.g. ceramic battery and primary battery system.
Advantage: The apparatus has reduced corrosion and stable discharge voltage level. The anode has high practical capacity.
Novelty: An apparatus has an electrochemical half-cell (1) having an electrolyte (20), an anode (10), and an ionomeric barrier (30) directly connected to the anode. The ionomer of the ionomeric barrier comprises a polymer with attached cationic functional groups. The cationic functional groups are chosen from quaternary ammonium, phosphonium, sulfonium, complexed metal cations, resonance-stabilized cations, pyridinium, imidazolium, and guanidinium functional groups. The anode comprises vanadium phosphide material.
Filed: 7/16/2013
Application Number: US13943566A
Tech ID: SD 12000.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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