US 2022/0045334 A1 · RESIN CURRENT COLLECTOR

Abstract

A resin current collector is a current collector for a positive electrode of a lithium ion battery. This resin current collector includes a polyolefin resin and a conductive carbon filler. With this resin current collector, a value obtained by dividing the yield point strength in the TD (Traverse Direction) by the yield point strength in the MD (Machine Direction) is at least 0.75 and at most 1.10, and the ten-point average roughness Rz in the TD is less than 4 μm.

Claims11

Dependent claims

A resin current collector for a positive electrode of a lithium ion battery, comprising:

a polyolefin resin;
and
a conductive carbon filler,
wherein a value obtained by dividing a yield point strength in a TD (Traverse Direction) by a yield point strength in a MD (Machine Direction) is at least 0.75 and at most 1.10, and
a ten-point average roughness Rz in the TD is less than 4 μm.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/417,066Filed 3 Sep 2020

Priority

JP 2019-21622429 Nov 2019

Published

10 Feb 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H01M 4/668
Selection of materials: composites of electroconductive material and synthetic resins
H01M 4/625
Electric conductive fillers: carbon or graphite
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
Y02E 60/10
Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation: energy storage using batteries

Resin current collector

Life of this patent

Resin current collector

Life of this patent

Abstract

Claims11