Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about
Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about 1 MWh and a response time less than or equal to about 100 milliseconds (ms).
대표청구항▼
1. An electrochemical energy storage device comprising a container including a negative electrode, a positive electrode and an electrolyte disposed between the negative electrode and positive electrode, wherein the electrochemical energy storage device has a first potential difference between the ne
1. An electrochemical energy storage device comprising a container including a negative electrode, a positive electrode and an electrolyte disposed between the negative electrode and positive electrode, wherein the electrochemical energy storage device has a first potential difference between the negative electrode and positive electrode at a first temperature that is less than about 50° C. and a second potential difference between the negative electrode and positive electrode at a second temperature of at least about 250° C., wherein the second potential difference is greater than the first potential difference, wherein at least two of the positive electrode, electrolyte and negative electrode are liquid at the second temperature, wherein the container has a surface area-to-volume ratio of less than or equal to about 100 m−1, and wherein the electrochemical energy storage device maintains at least about 90% of its energy storage capacity after 500 charge/discharge cycles. 2. The electrochemical energy storage device of claim 1, wherein the container contains one or more electrochemical cells, and wherein an individual electrochemical cell of the one or more electrochemical cells includes the negative electrode, the positive electrode and the electrolyte. 3. The electrochemical energy storage device of claim 2, wherein, over the charge/discharge cycle, a rate of heat generation in the individual electrochemical cell is greater than or equal to about 50% of a rate of heat loss from the individual electrochemical cell. 4. The electrochemical energy storage device of claim 1, wherein the electrochemical energy storage device maintains at least about 90% of its energy storage capacity after 1,000 charge/discharge cycles. 5. The electrochemical energy storage device of claim 1, wherein the electrochemical energy storage device has an energy storage capacity of at least about 1 kWh. 6. The electrochemical energy storage device of claim 1, wherein the electrochemical energy storage device is configured to maintain at least about 95% of its energy storage capacity after 500 charge/discharge cycles. 7. The electrochemical energy storage device of claim 4, wherein the electrochemical energy storage device is configured to maintain at least about 98% of its energy storage capacity after 1,000 charge/discharge cycles. 8. The electrochemical energy storage device of claim 1, wherein a response time of the electrochemical energy storage device is less than or equal to about 100 milliseconds (ms). 9. The electrochemical energy storage device of claim 1, wherein the negative electrode is liquid at the second temperature. 10. The electrochemical energy storage device of claim 1, wherein the negative electrode comprises at least one member selected from the group consisting of lithium, sodium, potassium, magnesium, and calcium. 11. The electrochemical energy storage device of claim 1, wherein the positive electrode comprises at least one member selected from the group consisting of antimony, lead, tin, tellurium and bismuth. 12. The electrochemical energy storage device of claim 1, wherein the electrolyte comprises an alkali metal halide salt. 13. The electrochemical energy storage device of claim 12, wherein the alkali metal halide salt is lithium chloride, lithium fluoride, or lithium bromide. 14. The electrochemical energy storage device of claim 1, wherein the electrochemical energy storage device is transportable at the operating temperature. 15. The electrochemical energy storage device of claim 1, wherein the container comprises a lid with a gasket that electrically isolates the container from the lid. 16. The electrochemical energy storage device of claim 15, wherein the gasket comprises an electrically insulating material. 17. The electrochemical energy storage device of claim 16, wherein the electrically insulating material comprises glass, an oxide, or a nitride. 18. The electrochemical energy storage device of claim 17, wherein the oxide comprises at least one member selected from the group consisting of silicon oxide, aluminum oxide, lithium oxide, calcium oxide, barium oxide, and yttrium oxide. 19. The electrochemical energy storage device of claim 17, wherein the nitride comprises at least one member selected from the group consisting of aluminum nitride, boron nitride, and lithium nitride.
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