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Super-Iron Nanoparticle based battery

Technology:

Background: Higher capacity electrochemical storage materials are needed to increase the energy storage capacity of batteries to improve devices ranging from portable consumer electronics and lightweight medical to military devices. Improved battery technologies are based on abundant materials which are environmentally benign and store substantially greater energy than conventional batteries. This invention relates to a super-iron particle based battery. Most iron materials and salts exist with iron in the +2 valence state (ferrous salts) +3 valence states (ferric salt) or as iron metal. Super-iron materials are a unique class of iron salts that exist in +6 valence state. A wide variety of super-iron batteries have been explored including Li-ion super-iron batteries and alkaline super-iron batteries. Charge storage gas been accomplished via alkali super-iron salts such as Li2FeO4 Na2FeO4K2FeO4Ru2FeO4Cs2FeO4 and moxtures or alloys of those salts alkali earth super-iron salts such as BaFeO4 and SrFeO4 and also via a transition metal super-iron salt Ag2FeO4. Ag2FeO4. Dr. Stuart Licht of the George Washington University earlier developed a battery that uses a stable superiron material in a highly unusual state. Electrochemical modification increases super-iron discharge currents to levels compatible with the best conventional battery systems. Super-iron has tremendous storage capacity increasing the novel battery life from hours to years. However the decrease in particle size which increases the ratio of surface area to volume and promotes electrochemical charge transfer also exposes the particle to a greater risk of decomposition through higher chemical reactivity. Super-iron salts are notoriously fragile readily reduced to the ferric state with both heat and contact with water and making them unlikely candidates for use in smaller or perhaps more reactive nano-size. Dr. Licht has now made improvements to the super-iron battery by reducing iron particle size to nano-range while improving the battery performance to a coulombic efficiency of as high as 80% as illustrated. This invention is the first to find a method to form battery active superiron nanoparticles which greatly enhance the battery power density. Applications: 1) Automotive or car batteries with improved charge storage and discharge potential 2) Wherever electrical is used or can be used

Benefits:

1) A higher capacity higher power than currently available batteries 2) Environmentally benign materials 3) Expected to help improve devices ranging from portable consumer electronics and lightweight medical to military devices

Date of release: