Paper-based magnesium battery and the use thereof
View Patent ↗The present application relates generally to paper-based magnesium batteries, and the manufacture and use thereof, such as in wearable or point of care devices.
1. A paper-based battery comprising:
a paper substrate adapted to receive a liquid; and
a cell comprising a magnesium anode disposed on the paper substrate and a cathode disposed on the paper substrate;
wherein the magnesium anode and the cathode are separated from and coplanar with each other, wherein upon application of a liquid to the paper substrate the magnesium anode, the cathode and the liquid are capable of generating an electric current and wherein said battery has a power density of at least about 1 mW/cm 2 after application of a liquid.
2. The paper-based battery of claim 1 , wherein the paper substrate comprises one or more folds.
3. The paper-based battery of claim 2 , wherein the magnesium anode and the cathode are coplanar on a region of the paper substrate bounded by one or more folds.
4. The paper-based battery of claim 2 , wherein the folded paper substrate comprises at least three folds.
5. The paper-based battery of claim 1 , wherein the paper substrate comprises a hydrophobic zone and a hydrophilic zone.
6. The paper-based battery of claim 1 , wherein the paper substrate comprises a zone loaded with an electrolyte.
7. The paper-based battery of claim 6 , wherein the zone loaded with electrolyte is in a path of travel of a liquid to the magnesium anode and the cathode.
8. The paper-based battery of claim 6 , wherein the electrolyte comprises metal ions corresponding to the cathode and anode, optionally in combination with inorganic salts.
9. The paper-based battery of claim 6 , wherein the electrolyte is selected from the group consisting of MgF 2 , MgCl 2 , MgBr 2 , MgI 2 , MgClO 4 , Mg(C 2 H 3 O 2 ) 2 , Mg(HCO 3 ) 2 Mg(OH) 2 , Mg(MnO 4 ) 2 , Mg(ClO 3 ) 2 , MgCO 3 , MgCrO 4 , MgCr 2 O 7 , MgSO 4 , Mg 3 (PO 4 ) 2 , Mg(NO 3 ) 2 , AgF, AgCl, AgBr, AgI, AgC 2 H 3 O 2 , AgHCO 3 , AgOH, AgNO 3 , AgMnO 4 , AgClO 3 , CuF, CuCl, CuBr, CuI, CuF 2 , CuCl 2 , CuBr 2 , CuI 2 , PtCl 2 , AuCl, KCl, NaCl and combinations thereof.
10. The paper-based battery of claim 1 , wherein the cathode comprises a material selected from the group consisting of silver, copper, platinum, gold and carbon-based material.
11. The paper-based battery of claim 10 , wherein the carbon-based material comprises a material selected from the group consisting of activated carbon, graphene, carbon nanotubes, carbon paste, glassy carbon paste and glassy carbon.
12. The paper-based battery of claim 1 , wherein the paper substrate comprises a zone loaded with an oxidation agent for magnesium metal.
13. The paper-based battery of claim 12 , wherein the oxidation agent is selected from the group consisting of BaCrO 4 , MnO 2 , PbO, KMnO 4 , FeO, PbCrO 4 , SnO 2 , Bi 2 O 3 and combinations thereof.
14. The paper-based battery of claim 1 , wherein the liquid comprises water.
15. The paper-based battery of claim 1 , wherein the liquid comprises a biological or non-biological fluid or a combination thereof.
16. The paper-based battery of claim 15 , wherein the biological fluid is selected from the group consisting of urine, blood-related samples, sputum, cerebral spinal fluid, interstitital fluid, bronchoalveolar lavage, lymph fluid, bone marrow fluid, ascetic fluid, exudative fluid, amniotic fluid, expectorated sputum, saliva, semen, bile, pancreatic fluid and combinations thereof.
17. The paper-based battery of claim 16 , wherein the blood-related sample comprises whole blood, serum, or plasma.
18. The paper-based battery of claim 1 , wherein the longest dimension of said magnesium anode is no more than about 10 mm.
19. The paper-based battery of claim 1 , wherein the battery has an open circuit potential of more than 1.5 V for a single cell.
20. The paper-based battery of claim 1 , wherein said battery does not contain a salt bridge.
21. The paper-based battery of claim 1 , further comprising a zone for conducting a reaction.
22. The paper-based battery of claim 1 , further comprising at least one or more additional cells connected to the first cell in series or in parallel.
23. A device comprising the paper-based battery of claim 1 .
24. A method of making a paper-based battery, the method comprising:
providing a paper substrate adapted to receive a liquid; and
disposing magnesium and a cathode material on the paper substrate to form a cell comprising a magnesium anode and a cathode;
wherein the magnesium anode and the cathode are separated from and coplanar with each other, wherein upon application of a liquid to the paper substrate the magnesium anode, the cathode and the liquid are capable of generating an electric current and wherein said battery has a power density of at least about 1 mW/cm 2 after application of a liquid.