Flexible energy storage projects

Can ultraflexible energy harvesters and energy storage devices form flexible power systems?

The integration of ultraflexible energy harvesters and energy storage devices to form flexible power systems remains a significant challenge. Here, the authors report a system consisting of organic solar cells and zinc-ion batteries, exhibiting high power output for wearable sensors and gadgets.

What are flexible energy storage devices (fesds)?

Consequently, there is an urgent demand for flexible energy storage devices (FESDs) to cater to the energy storage needs of various forms of flexible products. FESDs can be classified into three categories based on spatial dimension, all of which share the features of excellent electrochemical performance, reliable safety, and superb flexibility.

Why do we need flexible energy storage devices?

To achieve complete and independent wearable devices, it is vital to develop flexible energy storage devices. New-generation flexible electronic devices require flexible and reliable power sources with high energy density, long cycle life, excellent rate capability, and compatible electrolytes and separators.

Could a flexible self-charging system be a solution for energy storage?

Considering these factors, a flexible self-charging system that can harvest energy from the ambient environment and simultaneously charge energy-storage devices without needing an external electrical power source would be a promising solution.

How can flexible energy harvesting technologies convert ambient energy into electricity?

Various flexible energy-harvesting technologies can convert ambient energy into electricity. These include solar cells for harvesting light energy, triboelectrics and piezoelectrics for harvesting mechanical energy, thermoelectrics and pyroelectrics for capturing thermal energy and biofuel cells for converting biochemical energy.

What is the mechanical reliability of flexible energy storage devices?

As usual, the mechanical reliability of flexible energy storage devices includes electrical performance retention and deformation endurance. As a flexible electrode, it should possess favorable mechanical strength and large specific capacity. And the electrodes need to preserve efficient ionic and electronic conductivity during cycling.