Sure, not a day goes by without some sort revolutionary (if not just plain silly) announcement regarding fuel cells, and once again it looks like it's Panasonic's turn. According to Nikkei, the company will begin volume production of Li-ion rechargeable batteries that use a silicon alloy anode sometime in fiscal 2012. While Si alloy batteries have a tenfold theoretical improvement over current cells that utilize graphite, Panny claims that its device will have an improvement in linear capacity of close to thirty percent -- keeping at least 80 percent of its capacity even after 500 charge/recharge cycles. Currently the bad boy is being marketed towards notebook batteries, although we could be seeing 'em in our electric cars in the near future. Catch a couple pictures from the press conference after the break.