Patent · US Active

Lithium metal secondary battery containing a protected lithium anode

US10777810B2 · kind B2 · utility

3Cited by

30References

30Claims

0Family size

Assignee

Global Graphene Group, Inc. · US

Inventors

Hui He · Dayton, US
Baofei Pan · Dayton, US
Aruna Zhamu · Springboro, US
Bor Z. Jang · Centerville, US

Key dates

Filing date	Sep 6, 2018
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Mar 7, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided is a lithium secondary battery, comprising a cathode, an anode, and a porous separator or electrolyte, wherein the anode comprises: (a) an anode active layer containing a layer of lithium or lithium alloy, in a form of a foil, coating, or multiple particles aggregated together, as an anode active material; (b) a first anode-protecting layer having a thickness from 1 nm to 100 μm (preferably <1 μm and more preferably <100 nm) and comprising a lithium ion-conducting material having a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm; and (c) a second anode-protecting layer having a thickness from 1 nm to 100 μm and comprising an elastomer having a fully recoverable tensile elastic strain from 2% to 1,000% and a lithium ion conductivity from 10−8 S/cm to 5×10−2 S/cm.

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