Multifunctional portable energy storage

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?

To date, numerous flexible energy storage devices have rapidly emerged, including flexible lithium-ion batteries (LIBs), sodium-ion batteries (SIBs), lithium-O 2 batteries. In Figure 7E,F, a Fe 1−x S@PCNWs/rGO hybrid paper was also fabricated by vacuum filtration, which displays superior flexibility and mechanical properties.

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.

How can flexible energy storage improve wearable electronics?

Addressing the escalating energy demands of wearable electronics can be directly approached by enhancing the volumetric capacity of flexible energy storage devices, thereby increasing their energy and power densities.

What types of energy sources are available for portable and wearable devices?

The energy sources available for portable and wearable electronic devices, such as mechanical energy, thermal energy, chemical energy, and solar energy, are extensive. According to the characteristics of these forms of energy, energy harvesting systems suitable for collecting various forms of energy have gained substantial attention.

Are flexible organic photovoltaics and energy storage systems the future of wearable electronics?

Nature Communications 15, Article number: 8149 (2024) Cite this article Flexible organic photovoltaics and energy storage systems have profound implications for future wearable electronics. Here, the authors discuss the transformative potential and challenges associated with the integrative design of these systems for energy harvesting.