An apparatus comprising: a first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor; a second electrode comprising reduced graphene oxide; and spaced-apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho rt circuiting of the spaced-apart charge collectors.

The apparatus of any=precedirig C laim C laim 1, wherein the 4 substantially homogeneous mixture comprises a suspension.

The apparatus of any-preceding c laim c laim 1, wherein the proton conductor comprises an ionomer.

A substantially homogeneous mixture of graphene oxide and a proton conductor for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent short circuiting of the spaced apart charge collectors. 6

A method comprising: mixing graphene oxide with a proton conductor to form a substantially homogeneous mixture for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho r t circuiting of the spaced apart charge collectors.

A method comprising: depositing first and second electrodes for use with respective spaced-apart charge collectors, the first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor, the second electrode comprising reduced graphene oxide, wherein the first and second electrodes are deposited to extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first hydrophobic to prevent intermixing of the of the second electrode in proximity to one or both short circuiting of the spaced-apart charge collectors.

An apparatus comprising: a first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor; a second electrode comprising reduced graphene oxide; and spaced-apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho rt circuiting of the spaced-apart charge collectors.

The apparatus of any=precedirig C laim C laim 1, wherein the 4 substantially homogeneous mixture comprises a suspension.

The apparatus of any-preceding c laim c laim 1, wherein the proton conductor comprises an ionomer.

A substantially homogeneous mixture of graphene oxide and a proton conductor for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent short circuiting of the spaced apart charge collectors. 6

A method comprising: mixing graphene oxide with a proton conductor to form a substantially homogeneous mixture for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho r t circuiting of the spaced apart charge collectors.

A method comprising: depositing first and second electrodes for use with respective spaced-apart charge collectors, the first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor, the second electrode comprising reduced graphene oxide, wherein the first and second electrodes are deposited to extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first hydrophobic to prevent intermixing of the of the second electrode in proximity to one or both short circuiting of the spaced-apart charge collectors.

An apparatus comprising: a first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor; a second electrode comprising reduced graphene oxide; and spaced-apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho rt circuiting of the spaced-apart charge collectors.

The apparatus of any=precedirig C laim C laim 1, wherein the 4 substantially homogeneous mixture comprises a suspension.

The apparatus of any-preceding c laim c laim 1, wherein the proton conductor comprises an ionomer.

A substantially homogeneous mixture of graphene oxide and a proton conductor for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent short circuiting of the spaced apart charge collectors. 6

A method comprising: mixing graphene oxide with a proton conductor to form a substantially homogeneous mixture for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho r t circuiting of the spaced apart charge collectors.

A method comprising: depositing first and second electrodes for use with respective spaced-apart charge collectors, the first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor, the second electrode comprising reduced graphene oxide, wherein the first and second electrodes are deposited to extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first hydrophobic to prevent intermixing of the of the second electrode in proximity to one or both short circuiting of the spaced-apart charge collectors.

An apparatus comprising: a first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor; a second electrode comprising reduced graphene oxide; and spaced-apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho rt circuiting of the spaced-apart charge collectors.

The apparatus of any=precedirig C laim C laim 1, wherein the 4 substantially homogeneous mixture comprises a suspension.

The apparatus of any-preceding c laim c laim 1, wherein the proton conductor comprises an ionomer.

A substantially homogeneous mixture of graphene oxide and a proton conductor for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent short circuiting of the spaced apart charge collectors. 6

A method comprising: mixing graphene oxide with a proton conductor to form a substantially homogeneous mixture for use as a first electrode of an apparatus, the apparatus comprising the first electrode, a second electrode comprising reduced graphene oxide; and spaced apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent sho r t circuiting of the spaced apart charge collectors.

A method comprising: depositing first and second electrodes for use with respective spaced-apart charge collectors, the first electrode comprising a substantially homogeneous mixture of graphene oxide and a proton conductor, the second electrode comprising reduced graphene oxide, wherein the first and second electrodes are deposited to extend from their respective charge collectors towards one another to form a junction at an interface therebetween, and wherein the substantially homogeneous mixture of the first hydrophobic to prevent intermixing of the of the second electrode in proximity to one or both short circuiting of the spaced-apart charge collectors.