Ion conducting hybrid membranes
A device includes a membrane that is: (i) impermeable to oxygen, and (ii) insoluble in at least one polar solvent; and ion conducting particles in the membrane. At least some of the particles extend from a first side of the membrane to an opposed second side of the membrane. The thickness of the membrane is 15 μm to 100 μm.
1. A device, comprising:
a membrane that is: (i) impermeable to oxygen, and (ii) insoluble in at least one polar solvent; and
ion conducting particles in the membrane, wherein the ion conducting particles conduct Na, and wherein at least a portion of the particles extend from a first side of the membrane to an opposed second side of the membrane, and wherein the thickness of the membrane is 15 μm to 100 μm.
2. The device of claim 1 , wherein the thickness of the membrane is 15 μm to 65 μm.
3. The device of claim 1 , wherein the thickness of the membrane is 15 μm to 30 μm.
4. The device of claim 1 , wherein a majority of the ion-conducting particles in the membrane extend from the first side of the membrane to the second side of the membrane.
5. The device of claim 1 , wherein the binder of the membrane is polymeric.
6. The device of claim 1 , wherein the ion conducting particles conduct Li.
7. The device of claim 1 , wherein the ion conducting particles conduct at least one of H + , K, Fe, Zn, Mg, and Ca.
8. The device of claim 1 , wherein the membrane is impermeable to water and carbon dioxide.
9. The device of claim 1 , wherein the device has a bending radius of less than 1 cm.
10. A device, comprising:
a membrane comprising a polymer selected from cyclo-olefin polymers, poly-para-xylylenes, benzocyclobutenes, olefin addition polymers and copolymers, ring opening metathesis polymers and reduced forms thereof, acyclic diene metathesis polymers and reduced forms thereof, fluorocarbon addition polymers, fluoroether polymers, ring opened cyclobutyl fluoroethers, polyarylenes, polyarylene ethers, polybenzoazoles, polysiloxanes, silsequioxanes, polycarbosilanes, and mixtures and combinations thereof;
metal oxide lithium ion conducting particles in the membrane, wherein at least a portion of the particles have a first exposed surface projecting from a first side of the membrane and a second exposed surface projecting from an opposed second side of the membrane, and wherein the exposed surfaces of the conducting particles are substantially free of the polymer, and wherein the thickness of the membrane is 15 μm to 100 μm.
11. The device of claim 10 , wherein the metal oxide lithium ion conducting particles comprise at least one of:
Li 3 La 2/3−x TiO 3 or Li x La 3 M 2 O 12 , wherein M=Zr, Nb, Ta, Sb, or Bi; or
Li 2−2x Zn 1−x Ge(OS) 4 or LiM 2 (PO 4 ) 3 , wherein M=Ge, Ti, Hf, or Zr; and mixtures and combinations thereof.
12. A lithium oxygen battery comprising the device of claim 10 .
13. The device of claim 10 , wherein the device has a lithium ion conductivity greater than about 10 −5 S/cm.
14. A device, comprising:
a circular membrane comprising a polymer selected from cyclo-olefin polymers, poly-para-xylylenes, benzocyclobutenes, olefin addition polymers and copolymers, ring opening metathesis polymers and reduced forms thereof, acyclic diene metathesis polymers and reduced forms thereof, fluorocarbon addition polymers, fluoroether polymers, ring opened cyclobutyl fluoroethers, polyarylenes, polyarylene ethers, polybenzoazoles, polysiloxanes, silsequioxanes, polycarbosilanes, and mixtures and combinations thereof;
metal oxide lithium ion conducting particles in a central circular region of the membrane, wherein at least a portion of the particles have a first exposed surface projecting from a first side of the membrane and a second exposed surface projecting from an opposed second side of the membrane, and wherein the exposed surfaces of the conducting particles are substantially free of the polymer, and
wherein an annular region of the membrane surrounding the central circular region is free of metal oxide lithium ion conducting particles.