Planar multi-junction electrochemical cell

Claim 2

A planar multi-junction electrochemical pump for pumping an electrochemically active fluid, the pump comprising: a container defining an inlet chamber in a first portion thereof and an outlet chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gastight seal; a plurality of pairs of electrodes disposed on either side of and in contact with the electrolytic membrane, the electrodes in the inlet chamber being separated from one another by spaces and the electrodes in the outlet chamber being separated from one another by spaces; means for electrically connecting the electrodes; and means for applying an electrical voltage to the electrodes to establish a voltage gradient across the membrane to convert the fluid into ions in the inlet chamber, propel the ions through the membrane into the outer chamber, and reconvert the ions into fluid in the outlet chamber whereby the fluid is pumped from the inlet chamber into the outlet chamber.

Claim 3

The electrochemical pump of claim 1, and further comprising: means for supplying the fluid to the inlet chamber.

Claim 4

The electrochemical pump of claim 1, and further comprising: means for withdrawing the fluid from the outlet chamber.

Claim 5

The electrochemical pump of claim 1, wherein: the means for electrically connecting the electrodes includes means for electrically connecting the electrodes in series.

Claim 6

The electrochemical pump of claim 1, wherein: the means for electrically connecting the electrodes includes means for electrically connecting the electrodes in parallel.

Claim 7

The electrochemical pump of claim 1, wherein: each of the electrodes includes a thin film of metal deposited directly on the membrane.

Claim 8

The electrochemical pump of claim 1, wherein: the means for electrically connecting the electrodes includes a plurality of contact pins connecting a plurality of metal traces deposited on the inner face of the container walls.

Claim 9

The electrochemical pump of claim 1, wherein: the electrochemically active fluid includes a reduction/oxidation couple of hydrogen and hydrogen.

Claim 10

A planar multi-junction electrochemical fuel cell comprising: a container defining a first chamber in a first portion thereof and a second chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gastight seal; a plurality of pairs of electrodes disposed on either side of and in contact with the electrolytic membrane, the electrodes in the first chamber being separated from one another by spaces and the electrodes in the second chamber being separated from one another by spaces; means for electrically connecting the electrodes; means for supplying a fuel gas to the first chamber; and means for supplying a gaseous oxidant to the second chamber.

Claim 11

A planar multi-junction electrochemical fuel cell comprising: a container defining a first chamber in a first portion thereof and a second chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gastight seal; a plurality of pairs of electrodes disposed on either side of and in contact with the electrolytic membrane, the electrodes in the first chamber being separated from one another by spaces and the electrodes in the second chamber being separated from one another by spaces; means for electrically connecting the electrodes; means for supplying a fuel gas to the first chamber; and means for supplying a gaseous oxidant to the second chamber.

Claim 12

The electrochemical fuel cell of claim 9, and further comprising: means for withdrawing from the container the fluid by-product of the generation of electricity.

Claim 13

The electrochemical fuel cell of claim 10, wherein: the means for electrically connecting the electrodes includes means for electrically connecting the electrodes in series.

Claim 14

The electrochemical fuel cell of claim 10, wherein: the means for electrically connecting the electrodes includes means for electrically connecting the electrodes in parallel.

Claim 15

The electrochemical fuel cell of claim 10 wherein: each of the electrodes includes a thin film of metal deposited directly on the membrane.

Claim 16

The electrochemical fuel cell of claim 10, wherein: the fuel gas includes hydrogen.

Claim 17

The electrochemical fuel cell of claim 14, wherein: the gaseous oxidant includes oxygen.

Claim 18

A planar multi-junction electrochemical fuel cell comprising: a container; an electrolytic membrane disposed within the container, the membrane being fixed within the container so as to form a first and second chamber; a plurality of pairs of electrodes disposed on either side of and in contact with the electrolytic membrane; means for electrically connecting the electrodes, including a plurality of contact pins connecting a plurality of metal traces deposited on the inner face of the container walls; means for supplying a fuel gas to the first chamber; means for supplying a gaseous oxidant to the second chamber; and means for withdrawing from the container the fluid byproduct of the generation of electricity.

Claim 19

A planar multi-junction electrochemical fuel cell comprising: a container; an electrolytic membrane disposed within the container, the membrane being fixed within the container so as to form a first and second chamber; a plurality of pairs of electrodes disposed on either side of and in contact with the electrolytic membrane; means for electrically connecting the electrodes, including a plurality of contact pins connecting a plurality of metal traces deposited on the inner face of the container walls; means for supplying a fuel gas to the first chamber; means for supplying a gaseous oxidant to the second chamber; and means for withdrawing from the container the fluid byproduct of the generation of electricity.

Claim 20

A planar multi-junction electrochemical fuel cell comprising: a container defining a first chamber in a first portion thereof and a second chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gas-tight seal; a plurality of first electrodes in the first chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the second chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a differenet one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electrically conductive path between a first electrode comprised in one of the electrode pairs and a second electrode comprised in a different one of the electrode pairs whereby said electrode pairs are connected in series; means for supplying a fuel gas to the first chamber; and means for supplying a gaseous oxidant to the second chamber.

Claim 21

A planar multi-junction electrochemical fuel cell comprising: a container defining a first chamber in a first portion thereof and a second chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gas-tight seal; a plurality of first electrodes in the first chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the second chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a differenet one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electrically conductive path between a first electrode comprised in one of the electrode pairs and a second electrode comprised in a different one of the electrode pairs whereby said electrode pairs are connected in series; means for supplying a fuel gas to the first chamber; and means for supplying a gaseous oxidant to the second chamber.

Claim 22

A fuel cell according to claim 17 and further comprising means for withdrawing fluid from the container.

Claim 23

A fuel cell according to claim 17 wherein an electrode comprises a thin electrically-conductive layer on the membrane.

Claim 24

A fuel cell according to claim 17 wherein the fuel gas comprises hydrogen.

Claim 25

A fuel cell according to claim 17 wherein the gaseous oxidant comprises oxygen.

Claim 26

A fuel cell according to claim 17 wherein the means for electrically connecting the electrodes includes a plurality of contact pins connecting a plurality of metal traces deposited on the inner face of the container walls.

Claim 27

A planar multi-junction electrochemical pump for pumping an electrochemically active fluid, the pump comprising: a container defining an inlet chamber in a first portion thereof and an outlet chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gas-tight seal; a plurality of first electrodes in the inlet chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the outlet chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a different one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electically conductive path between a first electrode comprised in one of the electrode pairs and a second electrode comprised in a different one of the electrode pairs whereby said electrode pairs are connected in series; and means for producing a voltage gradient across said series-connected electrode pairs to convert the fluid into ions in the inlet chamber, propel the ions through the membrane into the outlet chamber, and reconvert the ions into fluid in the outlet chamber whereby the fluid is pumped from the inlet chamber into the outlet chamber.

Claim 28

A planar multi-junction electrochemical pump for pumping an electrochemically active fluid, the pump comprising: a container defining an inlet chamber in a first portion thereof and an outlet chamber in a second portion thereof; a single electrolytic membrane disposed within the container between said chambers and forming therebetween a gas-tight seal; a plurality of first electrodes in the inlet chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the outlet chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a different one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electically conductive path between a first electrode comprised in one of the electrode pairs and a second electrode comprised in a different one of the electrode pairs whereby said electrode pairs are connected in series; and means for producing a voltage gradient across said series-connected electrode pairs to convert the fluid into ions in the inlet chamber, propel the ions through the membrane into the outlet chamber, and reconvert the ions into fluid in the outlet chamber whereby the fluid is pumped from the inlet chamber into the outlet chamber.

Claim 29

A pump according to claim 23 and further comprising means for supplying the fluid to the inlet chamber.

Claim 30

A pump according to claim 23 and further comprising means for withdrawing the fluid from the outlet chamber.

Claim 31

An electrochemical pump according to claim 23 wherein the electrochemically active fluid comprises hydrogen.

Claim 32

An electrochemical pump according to claim 23 wherein the means for electrically connecting the electrodes includes a plurality of contact pins connecting a plurality of metal traces deposited on the inner face of the container walls.

Claim 33

A planar multi-junction electrochemical pump for pumping a fluid, the pump comprising: upper and lower generally annular membrane supports; an electrolytic membrane fixed between said supports; an upper segment adjacent the upper membrane support and defining therewith an inlet chamber; a lower segment adjacent the lower membrane support and defining therewith an outlet chamber separated from the inlet chamber by the membrane; a plurality of first electodes in the first chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the second chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a different one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electrically conductive path between a first electrode associated with one of the electrode pairs and a second electrode associated with a different one of the electrode pairs whereby said electrode pairs are connected in series; and means for applying an electrical voltage to the electrodes to establish a voltage gradient across the membrane to convert the fluid into ions in the inlet chamber, propel the ions through the membrane into the outlet chamber, and reconvert the ions into fluid in the outlet chamber whereby the fluid is pumped from the inlet chamber into the outlet chamber.

Claim 34

A planar multi-junction electrochemical pump for pumping a fluid, the pump comprising: upper and lower generally annular membrane supports; an electrolytic membrane fixed between said supports; an upper segment adjacent the upper membrane support and defining therewith an inlet chamber; a lower segment adjacent the lower membrane support and defining therewith an outlet chamber separated from the inlet chamber by the membrane; a plurality of first electodes in the first chamber disposed on the membrane in spaced-apart relationship to one another, and a like number of second electrodes in the second chamber disposed on the membrane in spaced-apart relationship to one another, each first electrode being in generally parallel relationship with a different one of the second electrodes but separated therefrom by the membrane to define an electrode pair, each first electrode being separated from the other first electrodes by a distance greater than the thickness of the membrane, and each second electrode being separated from the other second electrodes by a distance greater than the thickness of the membrane; an electrically conductive path between a first electrode associated with one of the electrode pairs and a second electrode associated with a different one of the electrode pairs whereby said electrode pairs are connected in series; and means for applying an electrical voltage to the electrodes to establish a voltage gradient across the membrane to convert the fluid into ions in the inlet chamber, propel the ions through the membrane into the outlet chamber, and reconvert the ions into fluid in the outlet chamber whereby the fluid is pumped from the inlet chamber into the outlet chamber.

Claim 35

A pump according to claim 28 wherein the means for electrically connecting the electrodes includes a plurality of contact pins connecting a plurality of metal traces, each trace being in contact with a different one of the electrodes.

Claim 36

A pump according to claim 28 and further comprising means for supplying the fluid to the inlet chamber.

Claim 37

A pump according to claim 28 and further comprising means for withdrawing the fluid from the outlet chamber.