“With two-times the energy density, we can make a battery half the size, but that still lasts the same amount of time, as a lithium ion battery. Or we can make a battery the same size as a lithium ion battery, but now it will last twice as long,”
What about energy?
In physics, energy is a property of objects, transferable among them via fundamental interactions, which can be converted in form but not created or destroyed.
Physics it is the general analysis of nature, conducted in order to understand how the universe behaves.

After all the healthy humanity living in a peaceful, secure and awesome living planet achieve the knowledge of how Nature could synergie objects and energy… then there will be other great problems to solve but at this point humanity has yet accomplished the main steps and procedures to extend a more “universal” and natural way of live.
Physics it is the general analysis of nature, conducted in order to understand how the universe behaves.

After all the healthy humanity living in a peaceful, secure and awesome living planet achieve the knowledge of how Nature could synergie objects and energy… then there will be other great problems to solve but at this point humanity has yet accomplished the main steps and procedures to extend a more “universal” and natural way of live.
More information about energy in this file.