Nanopore battery
A nanopore battery is a rechargeable battery that is a composite of billions of nanoscale batteries formed within the pores of a substrate.[1]
The space inside the holes is so small that billions of pores combined equal the volume of a grain of sand. Each pore's diameter was some one eighty-thousandth the width of a human hair.[1]
Construction
In 2014 a demonstration device was made from a ceramic sheet made of anodic aluminum. It held two
The V
2O
5 is prelithiated at one end to form the anode, with pure V
2O
5 at the other end to form the cathode. The battery asymmetrically cycles between 0.2 V and 1.8 V.[3]
Performance
The capacity retention of this full cell (relative to 1 C values) is 95% at 5 C and 46% at 150 C, with a 1,000-cycle life.[3] A demonstration device was fully charged in 12 minutes and recharged thousands of times.[1]
Implications
The system uses an electrochemical regime in which ion insertion and surface charge mechanisms for energy storage become indistinguishable. It can serve as a vehicle for studying ion transport limits in dense, nanostructured, electrode arrays.[3]
See also
References
- ^ a b c Coxworth, Ben (November 11, 2014). "Tiny battery is made from lots of even tinier "nanopore" batteries". Gizmag. Archived from the original on February 23, 2015. Retrieved February 23, 2015.
- ^ "A battery made up of billions of nanoscale batteries". Kurzweil.net. November 11, 2014. Archived from the original on February 23, 2015. Retrieved February 23, 2015.
- ^ PMID 25383515.