Energy storage battery stretching die picture

Can a thin film battery be stretched?

The assembled battery could be subjected to twisting, bending and stretching which could maintain structural integrity. However, it was observed that capacity loss was 35% and energy density decreased from 35 to 17 Wh kg −1 when the thin film battery was stretched to 50%.

What is a stretchable battery?

Using such dip-coated intrinsically stretchable electrodes, various stretchable batteries, including Na-ion battery, Li-ion battery, Zn–MnO 2 battery, have been fabricated to exhibit reasonable electrochemical performance and robust mechanical deformability.

Are flexible/stretchable batteries a good packing material?

Up to now, various flexible and stretchable materials have been developed and widely used as packing materials for flexible/stretchable batteries, exhibiting good performances in mechanical performance while maintaining the good battery performance.

Can stretchable batteries be used in wearable electronics?

Although the research on stretchable batteries is just a recent development, it has attracted a great deal of interest and various stretchable batteries, such as stretchable Zn-based batteries and Li-ion batteries [32, 88], have been reported to show potentials in wearable and stretchable electronics.

What is the reversible energy density under a 50% stretching strain?

Specifically, a reversible capacity of 28 mA h g −1 and an average energy density of 20 Wh kg −1 can still be obtained under a 50% stretching strain after 50 cycles at 120 mA g −1.

What is a stretchable Li-ion battery?

A stretchable Li-ion battery based on this gradient PU/AuNP stretchable conductor showed a good charge-discharge rate capability (100 mAh g −1 at a current density of 0.5 A g −1) and a remarkable cycle retention (96% after 1000 cycles), which can light up orange LEDs connected in series even under a 30% stretched state.