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100yr Nuclear Battery
#1
Concept of betavoltaic batteries has been discovered 50yrs ago, and now scientists in Russia are making progress developing Ni-63 based battery by capturing beta radiation and converting to electrical energy.

Ni-63 isotope has 100yrs half life. There is no special recycling required as product of Ni-63 decay is dormant copper isotope. Disadvantages is this battery produces constant power regardless if spent or not so not very good for iPhone, but quite all-right for peace-maker or a space sensor. Main disadvantage of Ni-63 is that is currently very expensive.

Nuclear bateries have been used for decades, but were based on strontium isotope Sr-90, which is highly radioactive and deadly toxic. Unlike Ni-63 which emits beta radiation (high powered electrons = easy to shield), it emits gamma radiation.

Here is some discussion from 2013 where someone estimated Ni-63 output per mol:
http://physics.stackexchange.com/questio...idely-used

Russian scientists are planning to have a prototype of Ni-63 "nuclear batery" in 2017
http://sputniknews.com/science/20160304/...atter.html
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#2
Interesting Roman, However I believe they will not be available to the general public. Maybe because of cost. Also safety. Stuff has to be made in a nuclear rector for one thing. Also Even knowing the battery itself is shielded and beta radiation is easy to stop with a casing of say aluminum. Does the government want say a terrorist to build a stockpile of these things and take them apart, to make a dirty bomb, or poison a water supply. Alpha radiation battery would be easier to shield with just paper, but same problem. You wouldn't want to breath in the stuff if it got out.

All said and done, I think physicists will invent a new efficient technology for us hobbyist to use. Maybe they will find a break through in room temperature superconductors, where there is almost no internal resistance, where batteries can store the power almost indefinitely.

http://www.cbc.ca/news/technology/room-t...-1.3435188

https://en.wikipedia.org/wiki/Supercondu...gy_storage
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