synthesizing-gel-polymer-electrolyte-for-supercapacitors-assembling

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Supercapacitors (SC) have attracted attention as energy storage devices due to their high density and long cycle performance. SCs used in devices ...

chung-ang university

Chung-Ang University

Venous valvular reflux is the main cause of chronic venous dysfunction. However, the etiology of valvular reflux is not completely understood. We conducted this study to investigate new risk factors for venous reflux of the great saphenous vein (GSV) in the thigh.

Alcohol Consumption, High-Density Lipoprotein Cholesterol, Antithrombin III, and Body Mass Index Are Associated with Great Saphenous Vein Reflux in the Thigh.

The increasing use of rapidly fluctuating renewable energy sources, such as sunlight, has necessitated the use of supercapacitors, which are a type of energy storage system with high power. Chemically exfoliated graphene oxide (GO) is a representative starting material in the fabrication of supercapacitor electrodes based on reduced GO (rGO). However, the restacking of rGO sheets driven by π-π stacking interactions leads to a significant decrease in the electrochemically active surface area, leading to a loss of energy density. Here, to effectively inhibit restacking and construct a three-dimensional wrinkled structure of rGO (3DWG), we propose an agarose gel-templating method that uses agarose gel as a soft and removable template. The 3DWG, prepared via the sequential steps of gelation, freeze-drying, and calcination, exhibits a macroporous 3D structure and 5.5-fold higher specific capacitance than that of rGO restacked without the agarose template. Further, we demonstrate a "gel-stamping" method to fabricate thin-line patterned 3DWG, which involves the gelation of the GO-agarose gel within micrometer-sized channels of a customized polydimethylsiloxane (PDMS) mold. As an easy and low-cost manufacturing process, the proposed agarose gel templating method could provide a promising strategy for the 3D structuring of rGO.

Article	Year
Alcohol Consumption, High-Density Lipoprotein Cholesterol, Antithrombin III, and Body Mass Index Are Associated with Great Saphenous Vein Reflux in the Thigh. Annals of vascular surgery\| PubMed ID: 28501660	2017
Agarose Gel-Templating Synthesis of a 3D Wrinkled Graphene Architecture for Enhanced Supercapacitor Performance. Micromachines\| PubMed ID: 35888929	2022

Jong-Kwon Park

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