Solid state energy storage device

Patent metadata

Field	Value
Publication number	US-2018137984-A1
Application number	US-201715805016-A
Country	US
Kind code	A1
Filing date	Nov 6, 2017
Priority date	May 21, 2015
Publication date	May 17, 2018
Grant date	—

Abstract

The present disclosure provides a solid state energy storage device, comprising: a first electrically conductive electrode, a second electrically conductive electrode; and at least one metadielectric layer located between the first and second conductive electrodes. The metadielectric layer comprises at least one type of mesogen. The mesogen consists of an organic compound with at least one electrically resistive substituent and at least one polarizable unit. The polarizable unit may be independently selected from intramolecular and intermolecular polarizable units.

First claim

What is claimed is:

1 . A solid state energy storage device, comprising:
a first electrically conductive electrode; a second electrically conductive electrode; at least one metadielectric layer located between the first and second conductive electrodes;
wherein the metadielectric layer comprises at least one type of mesogen;
wherein the mesogen consists of an organic compound with at least one electrically resistive substituent and at least one polarizable unit; and
wherein the polarizable unit is independently selected from intramolecular and intermolecular polarizable units.

2 . The solid state energy storage device according to claim 1 , wherein the device is a film capacitor, and wherein form factor of the thin film capacitor is either a cylindrical coiled capacitor or layered prismatic capacitor.

3 . The solid state energy storage device according to claim 1 , wherein the organic compound is selected from the list comprising: any compound with rigid electro-polarizable organic units, composite organic polarizable compounds, composite electro-polarizable organic compounds, composite non-linear electro-polarizable compounds, Sharp polymers, Furuta co-polymers, para-Furuta polymers, YanLi polymers, and any combination thereof; and
wherein the composite electro-polarizable organic compounds and composite non-linear electro-polarizable organic compounds are comprised of an aromatic ring system in conjugation with at least one electron donor group and at least one electron withdrawing group.

4 . The organic compound from claim 3 , wherein the aromatic ring system is selected from: chromophores, tictiods, anisometric conjugated aromatic ring systems, rylene fragments, phenyl groups, naphthyl groups, anthryl groups, and any combination thereof.

5 . The solid state energy storage device according to claim 1 , wherein the mesogen of the metadielectric layer comprises domain structures selected from any combination of: nematic structures, chematic structures, chiral nematic structures, and lyotropic type structures.

6 . The solid state energy storage device according to claim 1 , wherein the metadielectric layer has an effective breakdown strength of less than or equal to 1.0V/nm.

7 . The solid state energy storage device according to claim 1 , wherein the polarizable unit of the organic compound is rigid, wherein the polarizable unit is an aromatic polycyclic conjugated molecule, wherein electrically resistive substituents are present.

8 . The solid state energy storage device according to claim 7 , wherein the organic compounds form supramolecular structures selected from a list comprising two-dimensional flat form, rod-like, column-like, and disc-like forms; and wherein the polarizable units are oriented in the metadielectric layer such that poles of the polarizable units are substantially perpendicular to the electrodes of the solid state energy storage device.

9 . The solid state energy storage device according to claim 1 , wherein capacitance varies non-linearly with voltage.

10 . The solid state energy storage device according to claim 1 , wherein the metadielectric layer has a first relative permittivity (ε 1 ) below a first critical voltage (Vc 1 ) and a second relative permittivity (ε 2 ) above the first critical voltage (Vc 1 ); wherein the second permittivity (ε 2 ) is greater than the first permittivity (ε 1 ) and the metadielectric layer has a second relative permittivity (ε 2 ) of at least 1,000 above a first critical voltage (Vc 1 ) and a resistivity between 10 16 Ωcm and 10 24 Ωcm.

11 . The solid state energy storage device according to claim 10 , wherein the metadielectric layer has a third permittivity (ε 3 ) above a second critical voltage (Vc 2 ) which is greater than the first critical voltage (Vc 2 ≥Vc 1 ) and wherein the second relative permittivity ε 2 is below the second critical voltage Vc 2 , and wherein the second permittivity ε 2 is greater than the first permittivity (ε 1 ), and the third permittivity (ε 3 ) is greater than the second permittivity (ε 2 ).

12 . The solid state energy storage device according to claim 1 , further comprising one or more intermediate layers independently located in following positions: between metadielectric layers, between the metadielectric layer and the first electrode, between the metadielectric layer and the second electrode, wherein the intermediate layer has a permittivity greater than a permittivity of the metadielectric layer and a resistivity less than a resistivity of the metadielectric layer, and smooths interfacial surfaces between the metadielectric layer and the electrically conductive electrode.

13 . The solid state energy storage device according to claim 12 , further comprising at least one tunnel barrier layer independently located between the metadielectric layer and at least one intermediate layer located near the electrode, wherein the permittivity of the tunnel barrier layer is lower than the permittivity of the intermediate layer, and the breakdown voltage of the tunnel barrier layer is higher than the breakdown voltage of the intermediate layer.

14 . The solid state energy storage device according to claim 1 , wherein the electrically resistive substituent is selected from the group of: alkyl, aryl, substituted alkyl, substituted aryl, fluorinated alkyl, chlorinated alkyl, branched and complex alkyl, branched and complex fluorinated alkyl, branched and complex chlorinated alkyl groups, and any combination thereof, and wherein the aryl group is selected from substituted and unsubstituted phenyl, benzyl and naphthyl groups or siloxane, and/or polyethyleneglycol as linear or branched chains and wherein the electrically resistive substituent may be C X Q 2X+1 , where C is Carbon, X≥1 and each instance of Q is selected from hydrogen (H), fluorine (F), or chlorine (Cl), and wherein the at least one electrically resistive substituent is selected from the group consisting of single chain, branched chain, and polycyclic species.

15 . The solid state energy storage device according to claim 3 , wherein a number W of the electron withdrawing (acceptors) plus a number D of the electron donating groups (donors) is equal to 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 and each instance of the acceptor and donor groups are independently selected, and wherein the acceptors are independently selected from —NO 2 , —NH 3 + and —NR 3 + (quaternary nitrogen salts), counterion Cl − or Br − , —CHO (aldehyde), —CRO (keto group), —SO 3 H (sulfonic acids), —SO 3 R (sulfonates), —SO 2 NH 2 (sulfonamides), —COOH (carboxylic acid), —COOR (esters, from carboxylic acid side), —COCl (carboxylic acid chlorides), —CONH 2 (amides, from carboxylic acid side), —CF 3 , —CCl 3 , —CN; and wherein the donors are independently selected from —O − (phenoxides, like —ONa or —OK), —NH 2 , —NHR, —NR 2 , —OH, —OR (ethers), —NHCOR (amides, from amine side), —OCOR (esters, from alcohol side), alkyls, —C 6 H 5 , vinyls, wherein each instance of R is a radical independently selected from the list comprising alkyl (e.g. methyl, ethyl, isopropyl, tert-butyl, neopentyl, cyclohexyl etc.), allyl (e.g. —CH 2 —CH═CH 2 ), benzyl (e.g. —CH 2 C 6 H 5 ) groups, phenyl (including substituted phenyl) and other aryl (aromatic) groups, and wherein the polarizable unit form an anisometric molecular structure.

16 . The solid state energy storage device according to claim 1 , wherein the metadielectric layer comprises a material having a high breakdown field (E bd ) in at least one high-field regions where a breakdown field strength (E bd ) is

Assignees

• Capacitor Sciences Inc

Inventors

• Furuta Paul T
• Li Yan
• Sharp Barry K
• Lazarev Pavel Ivan

Classifications

• H01G7/06 Primary

  having a dielectric selected for the variation of its permittivity with applied voltage, i.e. ferroelectric capacitors (electrets H01G7/02) · CPC title

• H01G4/1227

  based on alkaline earth titanates · CPC title

• H01G4/1236

  based on zirconium oxides or zirconates (H01G4/1263 takes precedence) · CPC title

• H01G4/32

  Wound capacitors · CPC title

• H01G4/1218

  based on titanium oxides or titanates (H01G4/1245 takes precedence) · CPC title