MIT scientists create virus-based microbatteries

September 1, 2008 | Source: KurzweilAI

Angela Belcher and other MIT professors have developed a virus-based method of creating and installing microbatteries by stamping them onto a variety of surfaces.

First, on a clear, rubbery material, the team used a common technique called soft lithography to create a pattern of tiny posts either four or eight microns in diameter. On top of these posts, they then deposited several layers of two polymers that together act as the solid electrolyte and battery separator.

Next came viruses that preferentially self-assemble atop the polymer layers on the posts, ultimately forming the anode. They altered the virus’s genes so it makes protein coats that collect molecules of cobalt oxide to form ultrathin wires — together, the anode.

The final result: a stamp of tiny posts, each covered with layers of electrolyte and the cobalt oxide anode.

The team is also exploring a stamp for use on curved surfaces and integrating the batteries with biological organisms.

Source: MIT news