In near future, you will see paper battery!
Bing Hu, a post-doctoral fellow at Stanford University successfully
made battery made from paper.

Coat paper with ink made of carbon nanotubes and silver nanowires
and you have paper battery. And it’s supposed to be better
than current batteries.

Can you imagine clothes soaked in this same ink?
Talk about truely wearable batteries!

How about much lighter Notebook computer since much of it’s
weight is from battery?

How about your entire wall in your house painted with such ink?
Come up with wireless method of connecting your electric devices
to these walls and you have unlimited supply of batteries as
these walls will charge itself at night.

Is it just a pipe dream or will it be reality in my life time?

Source:Science Daily