Efficient and Flexible Supercapacitors Assembled on Metal Spikes

Abstract

Lavender-like, lightweight, and flexible supercapacitive electrodes with high specific capacitance have been fabricated for the first time by assemblingp etal-like nano-nickel oxideso n nickel spikes that are grown by using as imple non-templated method. Compared with traditional fiber-shaped electrodes, the specific capacitance of thesee lectrodes increases six-fold to 4.47 Fcm À2.For a1cm-long spike electrode, the capacitance reacheso ver 1.4 F, and no evident drop is observed at ab ending angle of 1808.B oth the mechanical strength and large current discharging property are unexpectedly good. The spike structurem akes the apparent mass density of the electrode as light as carbon fiber,a nd exhibits considerable potentialf or use in future portable energy-storage devices.

2D Layered α‐Fe2O3/rGO Flexible Electrode Prepared through Colloidal Electrostatic Self‐Assembly

“…The rapid development of portable consumer electronics, such as flexible displays, mobile phones and digital cameras, becomes more and more urgent for developing ultrathin and superior flexibility energy storage device . As a promising energy storage devices, supercapacitor have attracted great attention owing to their high power density, fast charging/discharging rate and long cycle life .…”

Self-Powered All-in-One Fluid Sensor Textile with Enhanced Triboelectric Effect on All-Immersed Dendritic Liquid–Solid Interface

“…Well-aligned dendrites could be assembled through an easily scalable nontemplate aqueous electro-deposition method. − As described by a well-established fractal growth mechanism − (Supporting Information Note 1), the dendrite growth process is a result of the self-organization during metal ion migration, which combines the directional electric-field-driven migration toward the electrode and the random migration caused by thermal disturbances inside the solution. With a fine control of the electro-field and fluid field distribution, arrays of the metal dendrites could be directly deposited from an aqueous electrolyte via a nontemplate electrodeposition method on either conductive fiber or metal net, demonstrating a good adaptability for different substrates.…”

Controllable constructing alloy dendrites with fractal structure as free‐standing electrode for enhanced oxygen evolution

“…N 2 adsorption/desorption data were analyzed by Autosorb‐iQ2‐MP analyzer. The SEM photos were processed by Image‐Pro Plus 6.0 software to extract fractal dimension …”