Novel High Stability Sodium-Ion Battery Anode

Opportunity

Available for Licensing

IP Status

US Utility Patent Pending (Not Yet Published)

Inventors

Amy Prieto
Jeffrey Ma

At A Glance

​Researchers at Colorado State University have developed a novel method for the electrodeposition of pure phase SnSB (tin antimony alloy) forming a high stability lithium-ion battery anode.  The novel methods do not require binders or carbon additives, resulting in longer cycle lifetimes.

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Licensing Director

Mandana Ashouri
Mandana.Ashouri@colostate.edu
970-491-7100

Reference No.:  2020-105

Background

Energy storage will be of importance for the foreseeable future, with the increased demand for electric vehicles and automakers committed to turning cars into all electric vehicles.  Secondary batteries play a major role in energy storage as the world slowly transitions from non-renewable sources, such as fossil fuels, to cleaner and more sustainable storage methods.   Currently, graphite is commercially used as the anode for a majority of lithium-ion batteries and saturates the market, although silicon is slowly beginning to push into commercial industries.   Current battery technology can be improved by replacing current graphite anodes because these anodes have low gravimetric capacity that results from only being able to hold one lithium for every six carbon atoms.  Alloy materials have been studied as a potential anode replacements for commercial graphite anodes due to their greater volumetric and gravimetric capacities when compared to graphite.   Alloy anodes have two to ten times the theoretical gravimetric capacity of graphite due to their ability to react with multiple lithium per metal center.  

Benefits
  • Directly deposited electrodes able to retain 95% capacity after 300 cycles
  • Directly deposited onto conducting substrates at room temp without the need of binders, carbon additives, or post-processing
  • Methods enable controllable composition, particle size, and thickness
  • Can be electrodeposited onto 3D scaffold architectures, having triple the areal loading
  • Pure SnSb electrodes exhibit competitive gravimetric capacities compared with binder additives
Applications
  • Batteries
  • Electric Vehicles
  • Energy Storage
Publications 

Ma, Jeffrey, and Amy L. Prieto. “Electrodeposition of Pure Phase SnSb Exhibiting High Stability as a Sodium-Ion Battery Anode.” Chemical Communications, The Royal Society of Chemistry, 9 May 2019, pubs.rsc.org/en/content/articlelanding/2019/cc/c9cc00001a#!divAbstract.

Last updated: July 2020

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