The limits of rechargeable spin battery

TL;DR

This paper explores the theoretical potential and limitations of solid-state spin batteries, highlighting their advantages over chemical batteries and discussing hypothetical applications in extreme environments.

Contribution

It introduces the concept that spin batteries based on heavy fermions can surpass chemical batteries in energy capacity and analyzes factors affecting their performance.

Findings

Spin batteries can theoretically exceed chemical batteries in energy capacitance.

Absence of chemical reactions makes spin batteries more stable.

Carrier statistics and density of states influence energy capacity.

Abstract

We discuss how the ideal rechargeable energy accumulator can be made, and what are the limits for solid state energy storage. We show that in theory the spin batteries based on heavy fermions can surpass the chemical ones by energy capacitance. The absence of chemical reactions in spin batteries makes them more stable, also they don't need to be heated in cold conditions. We study how carriers statistics and density of states affect energy capacity of the battery. Also, we discuss hypothetical spin batteries based on neutron stars.