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Hydrothermal Synthesis of Rose Bengal Dye Particle Deposition on Layered Reduced Graphene Oxide Composite for Photo Assisted Supercapacitor Applications
Electrochimica Acta ( IF 5.5 ) Pub Date : 2024-11-18 , DOI: 10.1016/j.electacta.2024.145380
Suresh D S, Sapna Sharanappa, Vijaykumar S P, Abdullah Ba Shbil, Ganesha H, Devendrappa H

Cutting-edge application of Photo-supercapacitor (PSC) in optoelectronics from photo-electrochemical storage electrode with energy conversion generating revolutionary shift to novel energy storage devices. The maximum absorbance of Rose Bengal (RB) at 547 nm gives the Power Conversion Efficiency (PCE) of Dye Sensitized Solar Cell (DSSC) is 0.34%. The fusion of RB with reduced Graphene Oxide (rGO) in aqueous and organic environment solubility provides functionalization of oxygen groups modifies surface wettability and mobility of Rose Bengal-reduced Graphene Oxide (RB-rGO) composite. It also provides structural transformation of amorphous RB into poly-crystalline RB-rGO composite and morphology studies confirm that large surface area of condensed layers of rGO grains incorporated with circular plates of RB provides maximum specific capacitance was 672 F/g and capacitance retention is 82.5% across 4000 Galvanostatic Charging and Discharging (GCD) cycles. The highest energy and power density are achieved by RB-rGO's Electric Double Layer Capacitance (EDLC) mechanism yields 38.88 Whr/kg and 4.988 kW/kg respectively. The PSC evident from self-charging capacitor improved specific capacitance of Galvanostatic charging and discharging (GCD) from 179 to 483 F/g and Cyclic Voltammetry (CV) from 285 to 503 F/g respectively under the influence of light that can enhances surface adsorption and charge transfer kinetics.

中文翻译:


在层状还原氧化石墨烯复合材料上沉积孟加拉玫瑰染料颗粒的水热合成,用于光辅助超级电容器应用



光电超级电容器 (PSC) 在光电电子学中的前沿应用,从光电化学存储电极到能量转换,产生了向新型储能器件的革命性转变。孟加拉玫瑰 (RB) 在 547 nm 处的最大吸光度使染料敏化太阳能电池 (DSSC) 的功率转换效率 (PCE) 为 0.34%。RB 与还原氧化石墨烯 (rGO) 在水和有机环境中溶解的融合提供了氧基团的功能化,改变了 Rose Bengal 还原氧化石墨烯 (RB-rGO) 复合材料的表面润湿性和迁移率。它还提供非晶 RB 向多晶 RB-rGO 复合材料的结构转变,形态学研究证实,与 RB 圆板结合的 rGO 颗粒凝聚层的大表面积在 4000 次恒电流充电和放电 (GCD) 循环中提供最大比电容为 672 F/g,电容保持率为 82.5%。RB-rGO 的双电层电容 (EDLC) 机制实现了最高的能量和功率密度,分别产生 38.88 Whr/kg 和 4.988 kW/kg。自充电电容器的 PSC 在光的影响下将恒电流充电和放电 (GCD) 的比电容分别从 179 F/g 提高到 483 F/g,循环伏安法 (CV) 的比电容从 285 F/g 提高到 503 F/g,可以增强表面吸附和电荷转移动力学。
更新日期:2024-11-18
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