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Framework Structure Battery Electrodes With High Power and Long Cycle Life


Stanford Reference:

11-046


Abstract


Researchers in Prof. Yi Cui’s laboratory have developed a family of materials that can be used to build batteries to meet the needs for grid-scale storage - high power, efficient, and long cycle life. These metal-organic-framework (MOF) materials can be scaled for reliable, inexpensive bulk production of batteries with aqueous electrolytes. In addition, the MOF electrodes can be combined with the anode technology described in Stanford Docket S11-344 for improved performance.


The Prussian Blue crystal structure. The open metal-organic framework allows hydrated ions such as potassium and ammonium to easily migrate between neighboring A Sites. This allows the material to last many cycles at high power.

Stage of Research
The inventors have synthesized several different MOF materials and demonstrated their electrochemical cycling at high power outputs with extremely long cycle life.

Applications


  • Batteries/large-scale energy storage for use with electrical power grids

Advantages


  • Ultra-long life cycle - 83% capacity retained after 40,000 cycles (compared to 500 cycles for lithium ion technology)
  • Very high power output from fast ion transport
  • Low-cost, scalable production:
    • fast powder precipitation from inexpensive, abundant chemical precursors
    • no heating or processing
  • Efficient - round trip energy efficiency reaches 99%
  • Aqueous electrolytes are inexpensive, safe and highly conductive

Publications



Related Web Links



Innovators & Portfolio



Patent Status



Date Released

 10/14/2015
 

Licensing Contact


Linda Chao, Senior Associate
(650) 725-9408 (Direct)

Online Non-Disclosure Agreement (NDA)





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