Large-capacity flexible energy storage devices

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.

Do flexible energy storage devices have high energy density?

Although Li-ion fiber batteries with a high energy density of 80 Wh kg−1had been achieved , the energy density of flexible energy storage devices lags far behind conventional LIBs (∼250 Wh kg−1), which is the stumbling block on the path of their practical applications.

Which materials are used in flexible energy storage devices?

Firstly, a concise overview is provided on the structural characteristics and properties of carbon-based materials and conductive polymer materials utilized in flexible energy storage devices. Secondly, the fabrication process and strategies for optimizing their structures are summarized.

What are flexible aqueous energy storage devices for flexible electronics?

In this review, we focus on pioneering works of flexible aqueous energy storage devices for flexible electronics, covering the material designs for essential components of the energy devices such as active materials, current collectors, aqueous electrolyte, and separator membranes.

Are flexible wearable supercapacitors the future of energy storage?

In recent years, flexible wearable supercapacitors have emerged as a new research trend [2, 3], making supercapacitors the most promising energy-storage devices . Currently, flexible wearable technology is rapidly developing, and numerous flexible wearable devices have emerged, enriching people's daily lives and improving work efficiency.

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.