A Reduced Graphene Oxide Polymer Blended Aerogel as a Substrate for Battery Electrodes and Methods of Making and Use Thereof

Physical Sciences : Materials and Compounds

Available for licensing

Inventors

  • Charles Mullins, Ph.D. , Chemical Engineering
  • Christopher Ellison, Ph.D.
  • Heonjoo Ha, M.S. , Chemical Engineering
  • Kyle Klavetter, Ph.D. , University of Texas at Austin
  • J. de Souza , University of Texas at Austin
  • Melissa Meyerson , Chemical Engineering
  • Adam Heller, Ph.D. , Chemical Engineering

Background/unmet need

Nickel foams are an expensive 3D substrate used to support high energy and power density Li-ion battery and other battery electrodes. Here, a simple manufacturing process is developed for creating a blended reduced graphene oxide and polymer aerogel that is conductive, porous, strong, and flexible as an economical 3D substrate for battery electrodes.

Invention Description

Researchers at The University of Texas at Austin are exploring the use of a conductive and flexible aerogel as a 3D substrate for battery electrodes. The substrate is easily made from graphite and poly (acrylic acid) and has been shown to enable stable cycling of graphite electrodes with 7.5 mAh/cm2 capacity and LiFePO4 cathodes with 5.0 mAh/cm2 capacity.

Benefits/Advantages

  • Used with Li-ion batteries, which are already in widespread commercial use
  • Increases electrode capacity per unit area of the substrate by a factor of 2X to 3X

Features

  • Customizable electronic conductivity
  • Variable porosity for regulating ionic conductivity
  • Adaptable strength and flexibility to fit custom battery cell casings

Market potential/applications

Global manufacturers of PC, tablet, and smartphone batteries

Development Stage

Proof of concept

IP Status

  • 1 U.S. patent application filed