Lithium Ion Batteries Based On Nanoporous Silicon

Low cost and simple fabricationCompatible with standard lithography techniquesHigh power capacity and extended cycling life

Portable electronicsMEMS, mobile phones, music players, notebooks, sensors

Researchers at UCLA have formed novel Li+ secondary battery electrodes that demonstrate high power capacity and retention of structure through many charge/discharge cycles. The conventional graphite electrode is replaced with a porous film of silicon nanowires, with a structure that is controllable during the alloying/dealloying process eliminating its associated volume changes. Furthermore, because the porous nanowires are made by etching of Si wafers, this technology also has the potential to be integrated with other lithographically produced devices.

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Background

As the popularity for portable electronics increases, the performance of small-scale secondary batteries is even more critical. New generation Li+ batteries are being investigated in order to obtain higher power capacity and extended cycling life.

Additional Technologies by these Inventors

• Improved Photovoltaic Efficiency in Semiconducting Polymer/fullerene Solar Cells through Control of Fullerene Self-assembly and Stacking
• Ordered Vertically Oriented Porous Inorganic Films Produced through Solution Processing
• Magnetoelectric Control of Superparamagnetism
• Space Confined Polymer-Based Field Effect Transistors
• Nanoporous Tin Powder For Energy Applications
• Robust Mesoporous Nife-Based Catalysts For Energy Applications

Tech ID/UC Case

21576/2010-823-0

Related Cases

2010-823-0

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