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Longer Life Lithium Ion Batteries with Silicon Anodes

Lawrence Berkeley National Laboratory

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Technology Marketing Summary

Researchers have developed a new technology to advance the life of lithium-ion batteries. A catechol-based polymer binder, developed at Berkeley Lab, interacting with the oxide layer on the surface of commercial silicon (Si), generates powerful adhesion strength and maintains electrode integrity during the drastic volume changes experienced in lithiation and delithiation. The result is a better binding property and longer electrode life in lithium-ion batteries.

Description

While Si has been the focus of lithium-ion battery anode research due to its high capacity, its use has been hampered by volume changes during lithiation and delithiation. The Berkeley Lab technology overcomes this limitation to represent an important step forward in the search for a longer lasting, Si-based lithium-ion batteries.

Benefits
  • Longer battery life
  • Easy-to-synthesize polymer binder
Applications and Industries

Lithium-ion batteries for

  • Electric / plug-in vehicles
  • Portable electronics
  • Renewable energy storage
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
2014-051ProposedAvailable08/04/201408/04/2014

Contact LBL About This Technology

To: Shanshan Li<ipo@lbl.gov>