Case 10816

Electrophoretically Formed Electrochemical Devices

Keywords:

Electrode structures, electrophoresis, 3D interpenetrating architectures

Applications:

Batteries, capacitors, fuel cells, electrochromic displays and windows, and sensors

Problem:

Need to insert a discrete separator film or electrolyte layer to fabricate electrochemical junctions

Technology:

This invention concerns methods in which electrical potentials and electric fields are used in order to form electrochemical junctions between positive and negative electrodes, and electrochemical devices using these methods. Said devices may have a variety of internal designs or architectures including those of 1, 2, and 3-dimensional construction. These include laminated devices, bobbin construction batteries and variants thereof, planar interpenetrating electrode structures, and 3D interdigitated and interpenetrating structures such as those based on the infiltration of a porous electrode with an opposing electrode. The methods and devices of the invention can be "separatorless" by virtue of having an in-situ formed electronically insulating, ionically conductive layer between the anode and cathode.

Advantages:
  • Lower manufacturing costs
  • Higher energy and power density
  • Longer life cycle

Inventors:
  • Professor Yet-Ming Chiang(Department of Materials Science and Engineering, MIT)
  • Benjamin Hellweg (Department of Materials Science and Engineering, MIT)
  • Richard K. Holman (Department of Materials Science and Engineering, MIT)
  • Steven M. Tobias (Department of Materials Science and Engineering, MIT)
  • Dong-Wan Kim (Department of Materials Science and Engineering, MIT)
  • Ryan Wartena (Department of Materials Science and Engineering, MIT)

Intellectual Property:
  • U.S. Patent application 12/692460 filed on January 22, 2010
  • U.S. Patent Number 7,662,265 issued on February 16, 2010

Publications:

N/A

Last revised:December 2, 2010

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