The present disclosure provides an energy storage device comprising at least one electrochemical cell comprising a negative current collector, a negative electrode in electrical communication with the negative current collector, an electrolyte in electrical communication with the negative electrode,
The present disclosure provides an energy storage device comprising at least one electrochemical cell comprising a negative current collector, a negative electrode in electrical communication with the negative current collector, an electrolyte in electrical communication with the negative electrode, a positive electrode in electrical communication with the electrolyte and a positive current collector in electrical communication with the positive electrode. The negative electrode comprises an alkali metal. Upon discharge, the electrolyte provides charged species of the alkali metal. The positive electrode can include a Group IIIA, IVA, VA and VIA of the periodic table of the elements, or a transition metal (e.g., Group 12 element).
대표청구항▼
1. An energy storage device comprising at least one electrochemical cell, said at least one electrochemical cell comprising: (a) a negative current collector;(b) a negative electrode in electrical communication with said negative current collector, wherein said negative electrode comprises an alkali
1. An energy storage device comprising at least one electrochemical cell, said at least one electrochemical cell comprising: (a) a negative current collector;(b) a negative electrode in electrical communication with said negative current collector, wherein said negative electrode comprises an alkali or alkaline earth metal, and wherein said negative electrode is in a liquid state at an operating temperature of at least about 100° C.;(c) an electrolyte in electrical communication with said negative electrode, wherein upon discharge said electrolyte provides charged species of said alkali or alkaline earth metal, and wherein said electrolyte is in a liquid state at said operating temperature;(d) a positive electrode in electrical communication with said electrolyte, wherein said positive electrode comprises one or more Group 12 elements, and wherein said positive electrode is in a liquid state at said operating temperature; and(e) a positive current collector in electrical communication with said positive electrode;wherein said energy storage device has an open circuit voltage greater than about 1 Volt (V) after at least about 100 charge/discharge cycles. 2. The energy storage device of claim 1, wherein said alkali or alkaline earth metal is lithium, sodium, potassium, magnesium or any combination thereof. 3. The energy storage device of claim 1, wherein said one or more Group 12 elements include zinc. 4. The energy storage device of claim 1, wherein said positive electrode further comprises one or more of tin, lead, bismuth, antimony, tellurium and selenium. 5. The energy storage device of claim 1, wherein said electrolyte comprises NaF, NaCl, NaBr, NaI, LiF, LiCl, LiBr, LiI, KF, KCl, KBr, KI, CaF2, CaCl2, CaBr2, CaI2, or any combination thereof. 6. The energy storage device of claim 1, wherein said operating temperature is at least about 250° C. 7. The energy storage device of claim 1, wherein, in a partially or fully charged state of said at least one electrochemical cell, said electrolyte comprises cations of said one or more Group 12 elements dissolved therein. 8. The energy storage device of claim 1, wherein upon discharge said charged species of said alkali or alkaline earth metal dissolves into said electrolyte. 9. The energy storage device of claim 1, wherein said open circuit voltage is greater than about 1 V in a charged state. 10. The energy storage device of claim 1, wherein said open circuit voltage is greater than about 1.5 V after at least about 100 charge/discharge cycles. 11. The energy storage device of claim 1, wherein said open circuit voltage is greater than about 2 V after at least about 100 charge/discharge cycles. 12. The energy storage device of claim 1, wherein said energy storage device exhibits said open circuit voltage in a fully or partially charged state. 13. An energy storage device comprising at least one electrochemical cell, said at least one electrochemical cell comprising: (a) a negative electrode that, in a charged state of said at least one electrochemical cell, comprises an alkali or alkaline earth metal, wherein said negative electrode is in a liquid state at an operating temperature of at least about 100° C.;(b) an electrolyte in electrical communication with said negative electrode, wherein upon charge of said at least one electrochemical cell, said electrolyte provides charged species of said alkali or alkaline earth metal, and wherein said electrolyte is in a liquid state at said operating temperature; and(c) a positive electrode in electrical communication with said electrolyte, wherein said positive electrode comprises a metal or metalloid, and wherein said positive electrode is in a liquid state at said operating temperature;wherein (i) in a discharged state of said at least one electrochemical cell, said positive electrode does not contain said alkali or alkaline earth metal, or (ii) in a partially or fully charged state of said at least one electrochemical cell, said electrolyte comprises cations of said metal or metalloid dissolved therein,wherein said at least one electrochemical cell exhibits an open circuit voltage greater than about 1 Volt (V) after at least about 100 charge/discharge cycles. 14. The energy storage device of claim 13, wherein (i) in a discharged state of said at least one electrochemical cell, said positive electrode does not contain said alkali or alkaline earth metal, and (ii) in a partially or fully charged state of said at least one electrochemical cell, said electrolyte comprises cations of said metal or metalloid dissolved therein. 15. The energy storage device of claim 13, wherein said at least one electrochemical cell exhibits an open circuit voltage greater than about 1.5 V after at least about 100 charge/discharge cycles. 16. The energy storage device of claim 15, wherein said at least one electrochemical cell exhibits an open circuit voltage greater than about 2 V after at least about 100 charge/discharge cycles. 17. The energy storage device of claim 13, wherein said positive electrode comprises a metal that is a transition metal. 18. The energy storage device of claim 13, wherein said positive electrode comprises a Group 12 element. 19. The energy storage device of claim 13, wherein said positive electrode comprises one or more of tin, lead, bismuth, antimony, tellurium and selenium. 20. The energy storage device of claim 13, wherein said energy storage device has an energy storage capacity of at least about 30 kWh. 21. The energy storage device of claim 13, wherein said energy storage device has an energy storage capacity less than about 30 kWh. 22. The energy storage device of claim 13, wherein said operating temperature is at least about 400° C. 23. The energy storage device of claim 13, wherein in a discharged state, said alkali or alkaline earth metal of said negative electrode is in said electrolyte. 24. The energy storage device of claim 13, wherein (i) in a discharged state of said at least one electrochemical cell, said negative electrode and said positive electrode do not contain said alkali or alkaline earth metal. 25. The energy storage device of claim 13, wherein said operating temperature is at least about 250° C. 26. The energy storage device of claim 13, wherein upon charge of said at least one electrochemical cell, said charged species of said alkali or alkaline earth metal is extracted from said electrolyte. 27. The energy storage device of claim 13, wherein said open circuit voltage is greater than about 1 V in a charged state. 28. The energy storage device of claim 13, wherein said energy storage device exhibits said open circuit voltage in a fully or partially charged state. 29. A method for charging an energy storage device, comprising: (a) providing an energy storage device comprising at least one electrochemical cell, comprising: (i) a negative electrode comprising an alkali or alkaline earth metal, wherein said negative electrode is in a liquid state at an operating temperature of at least about 100° C.;(ii) an electrolyte adjacent to said negative electrode, wherein said electrolyte comprises a salt of said alkali or alkaline earth metal, and wherein said electrolyte is in a liquid state at said operating temperature; and(iii) a positive electrode adjacent to said electrolyte, wherein said positive electrode comprises a metal or metalloid other than an alkali metal, and wherein said positive electrode is in a liquid state at said operating temperature; and(b) charging said at least one electrochemical cell through an external load that is electrically coupled to said energy storage device to attain a voltage from about 1 Volt (V) to 3 V after at least about 100 charge/discharge cycles at said operating temperature, wherein upon charging, cations of said metal or metalloid are dissolved into said electrolyte. 30. The method of claim 29, wherein upon charging said at least one electrochemical cell, said metal or metalloid is reversibly directed into said electrolyte. 31. The method of claim 29, wherein upon charging said at least one electrochemical cell, said alkali metal is directed from said electrolyte into said negative electrode. 32. The method of claim 29, wherein said operating temperature is at least about 200° C. 33. The method of claim 29, wherein said operating temperature is at least about 300° C. 34. The method of claim 29, wherein, in a discharged state, said negative electrode has a stoichiometric deficiency of said alkali or alkaline earth metal with respect to said metal or metalloid of said positive electrode. 35. The method of claim 29, wherein said voltage is from about 1.5 V to 2.5 V. 36. The method of claim 29, wherein said positive electrode comprises at least one transition metal. 37. The method of claim 36, wherein said positive electrode further comprises tin. 38. The method of claim 29, wherein said positive electrode comprises at least one Group 12 element. 39. The energy storage device of claim 29, wherein said operating temperature is at least about 250° C. 40. The method of claim 29, wherein said voltage is from about 1 V to 2.5 V. 41. The energy storage device of claim 29, wherein said voltage is at least about 1.5 V in a charged state. 42. The energy storage device of claim 29, wherein said voltage is at least about 2 V in a charged state.
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