Summary: TEHRAN (FNA)- Russian researchers optimized the design of a nuclear battery generating power from the beta decay of nickel-63, a radioactive isotope.
Their new battery prototype packs about 3,300 milliwatt-hours of energy per gram, which is more than in any other nuclear battery based on nickel-63, and 10 times more than the specific energy of commercial chemical cells.
These molecules are then subjected to bombardment by electrons, commonly from a Nickel-63
Under the proposed agreement, Ontario Power Generation expects to receive about 290 cubic feet of intermediate-level nuclear waste per year at the deep geologic repository, including carbon-14, with a half-life of about 5,000 years; nickel-59, with a half-life of 76,000 years; nickel-63
, with a half-life of 100 years; iodine-129, with a half life of 15.7 million years; chlorine-36, with a half-life of about 300,000 years; and many other isotopes with half-live exceeding 30 years.
Nuclear microbatteries using the decay of nickel-63
or tritium to generate power for decades is in development.
Secondly, work is progressing to develop nuclear microbatteries using the decay of nickel-63
or tritium that could generate power in a device potentially for decades.
The heart of the new battery is a dollop of nickel-63, a radioactive isotope that emits high-speed electrons as it decays.
And with a half-life of 100 years, nickel-63 could keep the juice on for decades.
The prototype is made of a copper strip that is cantilevered above a thin film or radioactive nickel-63
, an isotope.
The device, which works only in a vacuum, gets power from nuclear decay within a film of radioactive nickel-63
. As the nickel decays, ejected electrons embed themselves in the gold-plated tip of a nearby strip of silicon nitride only two micrometers thick.
Since April 1998, the firm has been marketing cobalt-60, iridium-192, strontium-89, barium-133, and nickel-63
. In June, FDA approved the company's first medical product, implantable metal seeds containing iodine-125 for treating prostate-cancer patients.