New Compound for Electrodes of a Secondary Lithium-ion Battery

Physical Sciences : Materials and Compounds

Available for licensing

Inventors

  • John Goodenough, Ph.D. , Mechanical Engineering
  • Jian-Tao Han, Ph.D. , Mechanical Engineering

Background/unmet need

The lithium-ion battery is the fastest growing and most promising battery in chemistry today. The lithium-ion does, however, have its drawbacks. Aging is one of the biggest concerns with most lithium-ion batteries; generally, some capacity deterioration is noticeable after a year.

Invention Description

Researchers at UT Austin have created a new compound for electrodes of a lithium-ion battery that provides better and safer performance than alternative anode materials. The invention proposes that compounds with the structure of the oxide TiNb2O7, including those structures having ionic displacements within the framework, can be used as more effective electrodes of a secondary lithium-ion battery.

Benefits/Advantages

  • Larger capacity and rate capability than other safe alternative anode materials
  • Simplified battery construction and therefore lower cost to construct
  • Safety against cell short circuit.

Features

  • Safe operation over many discharge/charge cycles if used as the anode of battery cell
  • Prevents the irreversible capacity loss of the cathode
  • Provides a greater energy density and power capability

Market potential/applications

Consumer/industrial/automotive

Development Stage

Lab/bench prototype

IP Status

  • 1 foreign patent application filed
  • 1 foreign patent issued
  • 1 U.S. patent issued: 8,647,773