Patent · US Active

Lithium ion cell for a secondary battery

US10879537B2 · kind B2 · utility

1Cited by

2References

9Claims

0Family size

Assignee

HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

Christian Neumann · Hungen, DE
Jörg Becker · Florstadt, DE
Sascha Pihan · Aschaffenburg, DE
Matthias Otter · Hamm, DE

Key dates

Filing date	Jun 10, 2014
Grant date	Dec 29, 2020
Priority date	—
Expiry date	Mar 15, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Known lithium-ion cells for a secondary battery including an electrode have an active material layer containing active material particles in contact with a non-aqueous electrolyte and a particulate, porous additive. Using this as a basis, it is desired to achieve an improvement in the lithium-ion cells in respect of their gravimetric and volumetric energy density and in respect of inexpensive and reproducible production, and in particular to ensure that the desired properties of the active material layer are not changed, or are not changed to an unacceptable degree, by compression during calendering. Accordingly, it is proposed to use, as an additive, porous carbon particles having a porosity in the range between 50% and 95% and having macropores which are fluidically connected to one another and which are delimited by carbon walls having an average wall thickness in the range of 5 to 500 nm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.