In this paper we study the transient behaviour of RC circuits with supercapacitors, varying R between 1 and 100 . We demonstrate that supercapacitors behave as ideal capacitors in series with an internal resistance (r ∼ 8 for C = 0.2 F, 5.5 V). This result is important to optimize the demonstration of RC circuits using a supercapacitor in series with a light bulb, because the r value is compara...

This paper describes TurboCap, a batteryless, supercapacitor-based power supply subsystem for a handheld, laser-based breast cancer detector named the Mini-FDPM. Supercapacitors have high power density and are a better match with the power usage pattern than batteries. However, the multivoltage requirement poses a new problem on the selection of supercapacitor topology for conversion efficiency...

By using highly aligned carbon nanotube (CNT) sheets of excellent optical transmittance and mechanical stretchability as both the current collector and active electrode, high-performance transparent and stretchable all-solid supercapacitors with a good stability were developed. A transmittance up to 75% at the wavelength of 550 nm was achieved for a supercapacitor made from a cross-over assembl...

Hierarchical rippled Bi(2)O(3) nanobelts were successfully synthesized by an electrodeposition route and tested as promising materials for supercapacitor applications.

In plane micro-supercapacitors that are miniaturized energy storage components have attracted significant attention due to their high power densities for various ubiquitous and sustainable device systems as well facile integration on flexible/wearable platform. To implement the in practical applications can accompany solid state or gel electrolyte flexible substrates, ions must be readily trans...

The next generation of Internet Things devices requires micro-supercapacitors operating at high voltage which is difficult to achieve using symmetrical design. Thus, their fabrication in an asymmetric configuration mandatory. While MnO 2 well-established as positive electrode, the scarcity existing efficient materials able be used negative side drives research towards new promising materials. S...

Micro-supercapacitors with high power density and stability promise emerging energy storage devices. However, their relatively low poor mechanical largely restricts application. Here, we report an all-in-one planar micro-supercapacitor (MSC) using ZnO nanosheets anchored on the porous 3D laser-induced graphene foams (ZnO@LIG) as electrode materials. Due to networks, hybrid exhibits fast charge ...