Microporous Carbon Nanoplates from Regenerated Silk Proteins for Supercapacitors

Abstract

Novel carbon-based microporous nanoplates containing numerous heteroatoms (H-CMNs) are fabricated from regenerated silk fibroin by the carbonization and activation of KOH. The H-CMNs exhibit superior electrochemical performance, displaying a specific capacitance of 264 F/g in aqueous electrolytes, a specific energy of 133 Wh/kg, a specific power of 217 kW/kg, and a stable cycle life over 10000 cycles.

Luminescent golden silk and fabric through in situ chemically coating pristine-silk with gold nanoclusters

“…Currently, more than 480,000 tons of cocoon silk can be obtained globally per year by feeding Bombyx mori silkworms [1]. As a natural proteinbased fiber, Bombyx mori silk is composed of an outer layer of silk (sericin) and a core of silk (fibroin) [2].…”

Hierarchically Macroporous Graphitic Nanowebs Exhibiting Ultra-fast and Stable Charge Storage Performance

“…In a general point of view, the power characteristics of supercapacitors are affected strongly by the operating cell voltage, as shown in the following formula: P max = V i 2 /(4R), where P, V i , and R are the power density, initial voltage, and equivalent series resistance (ESR), respectively [7]. In addition, the energy density is also closely related to the cell voltage from the relationship, E = 1/2 CV 2 , where E, C, and V are the energy density, capacitance, and operating voltage, respectively [8]. Therefore, a better power capability and energy density on supercapacitors can be achieved through a high cell voltage.…”

“…Therefore, a better power capability and energy density on supercapacitors can be achieved through a high cell voltage. A high working voltage of ≥ 3 V was realized using an ionic liquid-based electrolyte (ILE), while the bulky organic molecules showed unfavorable diffusion kinetics [7][8][9]. This suggests that a more sophisticated design of NCMs is required to maximize their electrochemical performance.…”

Morphologies and surface properties of cellulose-based activated carbon nanoplates

“…These include such as excellent electronic conductivity, high chemical stability, large surface area, and low cost [1][2][3][4]. The physical and chemical properties of CNMs are highly dependent on their morphologies, components, and microstructural characteristics.…”