I wonder if it can be cheaper and better at scale than iron-air batteries. Those seem inexpensive to make, and can carry a large enough capacity if you put a whole lot of them in parallel with each other, and have a long lifetime. They’re just really heavy for their amount of energy density and fairly low current per cell, but that shouldn’t be a problem when building enough to be grid-scale.
I wonder if it can be cheaper and better at scale than iron-air batteries. Those seem inexpensive to make, and can carry a large enough capacity if you put a whole lot of them in parallel with each other, and have a long lifetime. They’re just really heavy for their amount of energy density and fairly low current per cell, but that shouldn’t be a problem when building enough to be grid-scale.
At that point one can use Na/O2… Much higher energy released by redox reaction, much lighter