Hope Apple is interested in Public/Private partnerships other than just Stanford
Disclaimer: One has to be proud of their own alma mater and the department in which they studied.
http://news.wsu.edu/pages/publications.asp?Action=Detail&PublicationID=31776&TypeID=1
Technology could be available within a year
WSU researchers develop super lithium-ion battery
Wednesday, May 23, 2012
By Tina Hilding, College of Engineering and Architecture
PULLMAN, Wash. – Washington State University researchers have developed a new technology that could triple the capacity of lithium-ion batteries, which as anyone who owns a cell phone or laptop knows, can be frustratingly limiting.
![]() Grant Norton and student, David Mackay |
In particular, the researchers have developed an anode made of tin, rather than the carbon used currently. Rechargeable lithium ion batteries are made up of two electrodes, the cathode and an anode. During charging, the lithium ions move from the cathode to the anode. The anode holds the lithium ions and stores the battery’s energy. When the battery is used, the ions move from the anode to the cathode, discharging electrons and creating an electric circuit.
The new tin anode has the potential to store almost three times the energy of graphite.
![]() Uttara Sahaym |
Norton and his group decided to turn the problem on its head and see if they could control the growth of tin whiskers, instead of trying to get rid of them. They applied the work to developing a tin-based anode for batteries.
The researchers developed a method for growing tin nanoneedles directly onto copper foil using a standard electroplating process that is commonly used in industry. Electroplating means the tin-based anode costs less than regular graphite anodes with triple the energy storage capacity. The end product battery will look exactly the same as the current batteries, so that manufacturers don’t have to redesign their electronic devices to make room for a new battery.
With support from the WSU College of Engineering and Architecture’s Emerging Technology Fund, which is funded by private donations, the researchers have started building and testing the batteries.
Contact:
Grant Norton, professor, School of Mechanical and Materials Engineering, mg_norton@wsu.edu, 509-335-6617
Tina Hilding, communications coordinator, College of Engineering and Architecture, 509-335-5095, thilding@wsu.edu