Leaf Vein Super Flexible Capacitor

What is the capacitance retention of flexible supercapacitor?

The real specific capacitance of flexible supercapacitor using SILGMs as electrolytes and separator up to 153 F/g at 0.1 A/g keeps the capacitance retention of 97% after 1000 charge-discharge cycles . Flexible and safe hydrogel electrolytes typically consist of the hydrophilic cross-linked polymer networks and water-soluble electrolytes.

How flexible is a fiber-type supercapacitor?

Even after repeated bending every 100 charge-discharge cycles, the C3 (1.0)@mDW (100)-based supercapacitor had a capacitance retention of 88.0% after 500 cycles, which is almost the same as that without mechanical deformation; this validates the superior flexibility of the fiber-type supercapacitor (Fig. 7A).

How to calculate single electrode capacitance of fiber supercapacitors?

The single electrode capacitance of the fiber supercapacitors was calculated from GCD curves using the equation where m is the mass of single electrode, L is the length of fiber supercapacitor, and d is the density of single electrode.

Which electrolytes are suitable for the flexible supercapacitor?

Gel polymer electrolytes (GPE) are suitable for the flexible supercapacitor owing to flexibility, high ionic conductivity, long-term dimensional stability, nearly constant performance under strain or tension.

Can flexible supercapacitors improve electrochemical performance?

The comprehensive knowledge about flexible supercapacitors were systematically reviewed and the perspectives about the future research were put forward. Electrode materials for flexible supercapacitors and the modifying strategies to improve their electrochemical performance were thoroughly described.

Which asymmetric supercapacitor has a high specific capacitance?

As the binder-free negative and positive electrodes, porous Fe 2 O 3 and V 2 O 5 nanofibers offered high specific capacitance of 255 F g -1 and 256 F g -1, respectively. The fabricated all-solid-state asymmetric supercapacitor obtained high energy density of 32.2 Wh kg -1 and excellent power capability and cycling stability .