Hydrothermal Synthesis of Rose Bengal Dye Particle Deposition on Layered Reduced Graphene Oxide Composite for Photo Assisted Supercapacitor Applications

IF 5.5 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta 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

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Abstract

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.

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用于光辅助超级电容器应用的层状还原石墨烯氧化物复合材料上的玫瑰红染料粒子沉积水热合成法

光电超级电容器（PSC）在光电子学中的前沿应用，从具有能量转换功能的光电化学存储电极到新型储能设备的革命性转变。玫瑰红（RB）在 547 纳米波长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）达到 0.34%。RB 与还原石墨烯氧化物（rGO）在水性和有机环境中的溶解融合提供了氧基团的功能化，改变了玫瑰红-还原石墨烯氧化物（RB-rGO）复合材料的表面润湿性和流动性。形态学研究证实，与 RB 圆板结合在一起的 rGO 晶粒凝结层的表面积很大，在 4000 次电静态充电和放电 (GCD) 循环中可提供 672 F/g 的最大比电容和 82.5% 的电容保持率。RB-rGO 的双电层电容（EDLC）机制产生的最高能量和功率密度分别为 38.88 Whr/kg 和 4.988 kW/kg。在光的影响下，自充电电容器的比电容从 179 F/g 提高到 483 F/g，循环伏安法（CV）从 285 F/g 提高到 503 F/g。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.