Looks like MTI Micro have some big-name competition in the fuel-cell business. Sony have unveiled their own hybrid fuel-cell system, and while the concept might be big, the prototype isn't. In fact, it measures just 5 x 3cm, but is still capable of pumping out up to 3W of power.
Three Watts is enough to run a mobile phone for fourteen hours on just 10ml of methanol. This power could either be used to directly run the mobile device, or to recharge its li-ion battery. In their prototype, shown above, both the fuel-cell and the battery were combined, together with a control board.
Sony claim to be commercializing the fuel-cell, focusing on the mobile device market. Unlike MTI Micro's system, the Sony fuel-cell is 'active', with a pump to drive the methanol through.