California Institute of Technology

Massachusetts Institute of Technology

Superprotonic, Inc.

Dane A Boysen

Calum Chisholm

Sossina M Haile

Sekharipuram R Narayanan

Donald Robert Sadoway

David J Bradwell

Hojong Kim

Luis A Ortiz

Kai Jiang

Alina A Tomaszowska

Weifeng Wei

Kangli Wang

Ryan B Merle

Alex Papandrew

Tetsuya Uda

Matt Hetterman

Donald R Sadoway

Electrochemical cells having molten electrodes having an alkali metal provide receipt and delivery of power by transporting atoms of the alkali metal between electrode environments of disparate chemical potentials through an electrochemical pathway comprising a salt of the alkali metal. The chemical potential of the alkali metal is decreased when combined with one or more non-alkali metals, thus producing a voltage between an electrode comprising the molten alkali metal and the electrode comprising the combined alkali/non-alkali metals.

Alkali metal ion battery with bimetallic electrode

Electrochemical cells having molten electrodes having an alkali metal provide receipt and delivery of power by transporting atoms of the alkali metal between electrode environments of disparate chemical potentials through an electrochemical pathway comprising a salt of the alkali metal. The chemical potential of the alkali metal is decreased when combined with one or more non-alkali metals, thus producing a voltage between an electrode comprising the molten the alkali metal and the electrode comprising the combined alkali/non-alkali metals.

Improved solid acid electrolyte materials, methods of synthesizing such materials, and electrochemical devices incorporating such materials are provided. The stable electrolyte material comprises a solid acid capable undergoing rotational disorder of oxyanion groups and capable of extended operation at elevated temperatures, that is, solid acids having hydrogen bonded anion groups; a superprotonic, trigonal, tetragonal, or cubic, disordered phase; and capable of being operating at temperatures of &#x2dc;100&#xb0; C. and higher.

Solid acid electrolytes for electrochemical devices

The present invention provides a method for determining voltage loss in an electrical device. The method includes the steps of obtaining an array A of voltage values corresponding to at least one current interrupt measurement at current I, wherein Icorresponds to current values I, I, . . . , I, wherein subscript n is at least 3; forming an array D of difference values using a difference of the array A over an elapsed time; processing the difference values of the array D to obtain V; determining Vfor each Ito form an array V of V; and calculating a resistance, R, using the array V, thereby determining voltage loss in the electrical device.

Determination of ohmic losses in electrical devices

Processes, techniques, and compositions used to fabricate high performance solid acid fuel cell membrane electrode assemblies are disclosed. The techniques include preparing the solid acid electrolyte material, depositing the electrolyte membrane, depositing the electrocatalyst layer, preparing the electrodes, fabricating the gas seals, and constructing the membrane electrode assembly.

Processing techniques for the fabrication of solid acid fuel cell membrane electrode assemblies

A solid acid material is used as a proton conducting membrane in an electrochemical device. The solid acid material can be one of a plurality of different kinds of materials. A binder can be added, and that binder can be either a nonconducting or a conducting binder. Nonconducting binders can be, for example, a polymer or a glass. A conducting binder enables the device to be both proton conducting and electron conducting.

Proton conducting membrane using a solid acid

A solid acid material is used as a proton conducting membrane in an electrochemical device. The solid acid material can be one of a plurality of different kinds of materials. A binder can be added, and that binder can be either a nonconducting or a conducting binder. Nonconducting binders can be, for example, a polymer or a glass. A conducting binder enables the device to be both proton conducting and electron conducting. The solid acid material has the general form M H (XO ) .

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Pasadena, CA, United States of America

Dane A Boysen