US 10,122,044 B2 · Semi-solid electrodes with gel polymer additive

Abstract

Embodiments described herein relate generally to electrochemical cells having semi-solid electrodes that include a gel polymer additive such that the electrodes demonstrate longer cycle life while significantly retaining the electronic performance of the electrodes and the electrochemical cells formed therefrom. In some embodiments, a semi-solid electrode can include about 20% to about 75% by volume of an active material, about 0.5% to about 25% by volume of a conductive material, and about 20% to about 70% by volume of an electrolyte. The electrolyte further includes about 0.01% to about 1.5% by weight of a polymer additive. In some embodiments, the electrolyte can include about 0.1% to about 0.7% of the polymer additive.

Claims22

Dependent claims

A semi-solid electrode, comprising:

about 20% to about 75% by volume of an active material;
about 0.5% to about 25% by volume of a conductive material;
and
about 20% to about 70% by volume of an electrolyte, the electrolyte including
about 0.01% to 1.5% by weight of a polymer additive,
wherein a total polymer content in the electrolyte is less than or equal to 1.5% by weight, and
wherein the semi-solid electrode is a mixture of the active material, the conductive material and the electrolyte with the polymer additive.

4 more elements

A semi-solid electrode, comprising:

about 10% to about 75% by volume of an active material;
about 0.5% to about 20% by volume of a conductive material;
and
about 20% to about 70% by volume of an electrolyte, the electrolyte including about 0.01% to 1.5% by weight of a polymer additive,
wherein a total polymer content in the electrolyte is less than or equal to 1.5% by weight, and
wherein the semi-solid electrode is a mixture of the active material, the conductive material and the electrolyte with the polymer additive.

3 more elements

A semi-solid electrode, comprising:

an active material;
a conductive material;
and
about 20% to about 70% by volume of an electrolyte, the electrolyte including about 0.01% to 1.5% by weight of a gel-polymer additive,
wherein a total polymer content in the electrolyte is less than or equal to 1.5% by weight, and
wherein the semi-solid electrode is a mixture of the active material, the conductive material and the electrolyte with the polymer additive.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/336,119Filed 21 Jul 2014 · us provisional application

Priority

19 Jul 2013

Published

US 2015/0024279 A122 Jan 2015

Granted

6 Nov 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H01M 10/0565
The electrolyte being constituted of organic materials only: polymeric materials, e.g. gel-type or solid-type
H01M 4/13
Electrodes composed of, or comprising, active material: electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators;…
H01M 4/62
Electrodes composed of, or comprising, active material: selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/624
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers: electric conductive fillers

Semi-solid electrodes with gel polymer additive

Life of this patent

Semi-solid electrodes with gel polymer additive

Life of this patent

Abstract

Claims22