IP Library › Granted Patent US 8,871,390
Granted Patent B2
US 8,871,390 · App. 13/139,114 · Granted Oct 28, 2014

PAN-PEO gels with improved conductance and solvent retention

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Quick Facts
Patent No.
US 8,871,390
App. No.
13/139,114
Granted
Oct 28, 2014
Kind
B2
Abstract

Disclosed are gel electrolytes comprising a polymer, which is polyacrylonitrile (PAN) and polyethylene oxide (PEO); a lithium salt; and a solvent, which is a carbonate solvent, a lactone solvent, or mixtures thereof.

Claims (5)

1. A gel electrolyte comprising:

polyacrylonitrile (PAN) in about 15 wt %;

polyethylene oxide (PEO) in about 6 wt %;

a lithium salt in about 6.3 to about 7.5 wt %, wherein the lithium salt consists of lithium perchlorate; and

a solvent comprising a mixture of propylene carbonate and γ-butyrolactone in a 1:1 molar ratio.

Assignments (4)
RELEASE OF SECURITY INTEREST IN PATENTS, RECORDED ON JANUARY 29, 2019 AT REEL 048373 FRAME 0217 Recorded Sep 22, 2025
From: CRESTLINE DIRECT FINANCE, L.P., AS COLLATERAL AGENT
To: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Reel/Frame 072936/0464 →
RELEASE OF SECURITY INTEREST Recorded Jul 31, 2019
From: CRESTLINE DIRECT FINANCE, L.P.
To: EMPIRE TECHNOLOGY DEVELOPMENT LLC
Reel/Frame 049924/0794 →
SECURITY INTEREST Recorded Jan 29, 2019
From: EMPIRE TECHNOLOGY DEVELOPMENT LLC
To: CRESTLINE DIRECT FINANCE, L.P.
Reel/Frame 048373/0217 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 13, 2011
From: BALAJI, RAMAMURTHY; KULKARNI, AJIT R.; SRINIVASA, RAMAN S.
To: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
Reel/Frame 027374/0929 →