Title: Lithium metal pouch cells and methods of making the same

Abstract

A lithium metal pouch cell having a specific energy ≥300 Wh·kg^-1 includes an anode comprising lithium metal and an anode current collector, the anode having an areal capacity N (mAh·cm⁻²); a cathode comprising a cathode material and a cathode current collector, the cathode having an a real capacity P (mAh·cm⁻²), wherein a ratio of N/P is within a range of 0.02 to 5; an electrolyte having an electrolyte mass E and comprising a lithium active salt and a solvent, the lithium metal pouch cell having an electrolyte mass to cell capacity (E/C) ratio within a range of 1 to 6 g·Ah⁻¹; a separator positioned between the anode and the cathode; and a packaging material defining a pouch enclosing the anode, cathode, electrolyte, and separator; wherein a protruding tab of the anode current collector and a protruding tab of the cathode current collector are external to the pouch.

Inventors:

Xiao, Jie; Liu, Jun; Lee, Hongkyung; Liu, Dianying; Niu, Chaojiang

Issue Date:

2023-04-04

Research Org.:

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1998266

Patent Number(s):

11621414

Application Number:

17/512,197

Assignee:

Battelle Memorial Institute (Richland, WA)

DOE Contract Number:  

AC05-76RL01830

Resource Type:

Patent

Resource Relation:

Patent File Date: 10/27/2021

Country of Publication:

United States

Language:

English