US 11,107,640 B2 · Electrolyte formulations for energy storage devices

Abstract

An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode, and an electrolyte where the electrolyte includes one or more additives and/or solvent components selected from vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC). The electrolyte may include a carbonate based solvent and one or more solvent components and/or one or more of vinylene carbonate (VC), vinyl ethylene carbonate (VEC), dimethylacetamide (DMAc), hydro fluorinated ether branched cyclic carbonate, a hydro fluorinated ether ethylene carbonate (HFEEC), hydro fluorinated ether (HFE), and fluorinated ethylene carbonate (FEC).

Claims17

Dependent claims

An energy storage device comprising:

a cathode;
an anode;
a separator between the cathode and the anode;
and
an electrolyte comprising a solvent, a lithium salt, and one or more additives;
wherein the electrolyte comprises each of the one or more additives in about 0.5 wt % to about 5 wt %;
and
wherein the solvent comprises EC (ethylene carbonate)/DEC (diethylcarbonate)/DMC (dimethylcarbonate)/EB (ethyl butyrate) in a ratio of about 1:1:1:1 by volume, EC/EMC/MP (methyl propionate) in a ratio of about 1:1:8 by volume, EC/DEC/DMC/EMC in a ratio of about 1:1:1:2 by volume, or EC/DMC/EB in a ratio of about 1:1:1 by volume.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/370,296Filed 29 Mar 2019 · continuation

Priority

1 Mar 2016

Published

US 2019/0362909 A128 Nov 2019

Granted

31 Aug 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

H01G 11/50
Characterised by their material: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
H01G 11/52
Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the…:…
H01G 11/60
Liquid electrolytes: characterised by the solvent
H01G 11/62
Liquid electrolytes: characterised by the solute, e.g. salts, anions or cations therein

Family

Application62/302,059Us provisional application · filed 1 Mar 2016

Application15/442,080Parent of this continuation · filed 24 Feb 2017

US 2019/0362909 A1Pre-grant publication · published 28 Nov 2019

US 10,249,449 B2Parent of this continuation

US 2017/0256368 A1Published application

US 11,107,640 B2This patent

From the US filing history. Foreign family members aren’t listed.

Electrolyte formulations for energy storage devices

Life of this patent

Electrolyte formulations for energy storage devices

Life of this patent

Abstract

Claims17