Abstract
According to the Dollo's law, biological evolution that authorize a species new functions, simultaneously create a mechanical or physiological limitations. This perspective has been also applicable to technological innovation, and energy storage systems have seemed to strictly obey the rules.
Rigid external passive structures have been thought to be essential for the conventional energy storage systems, because packaging with robust wearing maintain the structure of a device and minimize damages that are caused by impacts from external forces and the environment. However, these advantageous characteristics of conventional device packaging results in critical limitations for further innovation of energy storage systems, such as (1) low degree of deformation, (2) scalability of device unit and (3) thermal and pressure controllability.
As the vertebrates blazed a trail in the biological evolution with endoskeleton frame, we propose a novel construction of energy storage device with an analogy to bio-systems. Reverse stacking to fabricate endoskeletal frame would allow energy storage devices deformable and consequently applicable to diverse electronics with generosity.