An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the conductive polymer is configured to be doped and dedoped with anions. The electrolytic solution contains (a) a first salt of a lithium ion and a first anion and (b) a second salt of a lithium ion and a second anion. The first anion is a bis(sulfonyl)imide anion containing fluorine.

An electrolyte solution containing at least one selected from a compound (I) represented by the following formula (I) and specific compounds (II). The formula (I) is as follows: ##STR00001##
wherein R.sup.11 is a C2-C6 alkyl group. Also disclosed are a secondary battery containing the electrolyte solution and a module including the electrochemical device or the secondary battery.

The present invention provides an energy device having excellent properties. Also provided is a nonaqueous electrolyte solution containing a compound represented by the following Formula (1), wherein R.sup.11, R.sup.12 and R.sup.13 each independently represent an organic group having 1 to 3 carbon atoms; and R.sup.11 and R.sup.12, R.sup.11 and R.sup.13, or R.sup.12 and R.sup.13 are optionally bound with each other to form a 5-membered ring or a 6-membered ring, with a proviso that a total number of carbon atoms of R.sup.11, R.sup.12 and R.sup.13 is 7 or less. ##STR00001##

The present invention provides an energy device having excellent properties. Also provided is a nonaqueous electrolyte solution containing a compound represented by the following Formula (1), wherein R.sup.11, R.sup.12 and R.sup.13 each independently represent an organic group having 1 to 3 carbon atoms; and R.sup.11 and R.sup.12, R.sup.11 and R.sup.13, or R.sup.12 and R.sup.13 are optionally bound with each other to form a 5-membered ring or a 6-membered ring, with a proviso that a total number of carbon atoms of R.sup.11, R.sup.12 and R.sup.13 is 7 or less. ##STR00001##

A capacitive coupler provides high coupling capacitance through the use of an electrical double layer formed on opposite plates of the coupler. The coupler can be independent or provide a hydrodynamic or hydrostatic bearing as well as capacitive coupling and the circulated dielectric can provide for cooling of associated machinery.

An electrolytic solution for an electrochemical device, including: a cation (C) that is a monovalent to trivalent metal ion; an anion (A); a solvent (SO) that is a compound having a molecular weight of 1,000 or less; and a polymer (P) that has a weight-average molecular weight of more than 10,000, wherein a content ratio of the solvent (SO) relative to 1 mol of the cation (C) is 0.5 to 4 mol, and a content ratio of the polymer (P) is 0.5% by weight or more. Also provided are a plastic composition, an electrode sheet, an insulating layer, and an electrochemical device including the electrolytic solution, as well as producing methods of these.

Provided are new solid-state electrochemical cells and methods for fabricating these cells. In some examples, a solid-state electrochemical cell is assembled using a negative electrode, a positive electrode, and a gel-polymer electrolyte layer, which is disposed and provides ionic communications between these electrodes. Prior to this assembly, the negative electrode is free from electrolytes. The negative electrode is fabricated using a coating technique, e.g., forming a slurry, comprising a polymer binder and one or more negative active materials structures, such as silicon, graphite, and the like. The porosity, size, and other characteristics of the negative active materials structures and of the resulting coated later are specifically controlled to ensure operation with the gel-polymer electrolyte layer or, more specifically, high-rate charge and discharge, e.g., greater than 1 mA/cm.sup.2. The gel-polymer electrolyte layer releases some of its liquid electrolyte after the interface with the negative electrode is formed.

Provided are new solid-state electrochemical cells and methods for fabricating these cells. In some examples, a solid-state electrochemical cell is assembled using a negative electrode, a positive electrode, and a gel-polymer electrolyte layer, which is disposed and provides ionic communications between these electrodes. Prior to this assembly, the negative electrode is free from electrolytes. The negative electrode is fabricated using a coating technique, e.g., forming a slurry, comprising a polymer binder and one or more negative active materials structures, such as silicon, graphite, and the like. The porosity, size, and other characteristics of the negative active materials structures and of the resulting coated later are specifically controlled to ensure operation with the gel-polymer electrolyte layer or, more specifically, high-rate charge and discharge, e.g., greater than 1 mA/cm.sup.2. The gel-polymer electrolyte layer releases some of its liquid electrolyte after the interface with the negative electrode is formed.

Disclosed herein is a method for using a high temperature rechargeable energy storage device comprising (a) obtaining an HTRESD; and (b) at least one of (1) cycling the HTRESD by alternatively charging and discharging the HTRESD at least twice over a duration of 20 hours and (2) maintaining a voltage across the HTRESD for 20 hours, such that the HTRESD exhibits a peak power density between 0.005 W/liter and 75 kW/liter after 20 hours when operated at an ambient temperature in an operating temperature range comprising between about −40° C. and about 210° C.

Disclosed herein is a method for using a high temperature rechargeable energy storage device comprising (a) obtaining an HTRESD; and (b) at least one of (1) cycling the HTRESD by alternatively charging and discharging the HTRESD at least twice over a duration of 20 hours and (2) maintaining a voltage across the HTRESD for 20 hours, such that the HTRESD exhibits a peak power density between 0.005 W/liter and 75 kW/liter after 20 hours when operated at an ambient temperature in an operating temperature range comprising between about −40° C. and about 210° C.