Effect of electrodeposition of AuPt nanostructure thin films on the electrocatalytic activity of counter electrodes: DSSCs application

IF 2.6 4区 化学 Q3 ELECTROCHEMISTRY
Hayet Lallali, Abdelhadi Bentouami, Fatma Zohra Tighilt, Samia Belhousse, Kahina Lasmi, Khaled Hamdani, Sabrina Sam, Amar Manseri
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Abstract

Enormous scientific interests focused on the improvement of the electrocatalytic activity of counter electrodes for their application in dye-sensitized solar cells (DSSCs). In this regards, we have elaborated a novel gold and platinum (AuPt) nanostructures via direct and indirect electrodeposition techniques; the first one is cyclic voltammetric, while the second one is a combination of amperometric and potentiostatic methods. The as-prepared AuPt nanomaterials, which were characterized by XRD, XPS, SEM, and CA, and electrochemical analysis such as cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization were employed as counter electrode in dye sensitized solar cells. The AuPt counter electrode prepared by cyclic voltammetric technique was the best electrocatalytic activity toward \({\text{I}}_{3}^{-}/{\text{I}}^{-}\) reduction, low charge transfer resistance of 9.2 Ω cm2, and good chemical and electrochemical stability in the electrolyte. The assembled cell with the Au/Pt electrode provided a maximum power density of 2.35 mW cm−2 with an efficiency of 2.35% under back illumination of 100 mW cm−2 and AM 1.5 G.

Graphical Abstract

Abstract Image

电沉积 AuPt 纳米结构薄膜对反电极电催化活性的影响:DSSCs 应用
大量科学兴趣集中在提高对电极的电催化活性上,以便将其应用于染料敏化太阳能电池(DSSC)。为此,我们通过直接和间接电沉积技术制备了一种新型金铂(AuPt)纳米结构;第一种是循环伏安法,第二种是安培法和电位法相结合的方法。制备的 AuPt 纳米材料通过 XRD、XPS、SEM 和 CA 以及电化学分析(如循环伏安法、电化学阻抗光谱法和 Tafel 极化法)进行了表征,并被用作染料敏化太阳能电池的对电极。通过循环伏安技术制备的金铂对电极对\({text{I}}_{3}^{-}/{text{I}}^{-}\)还原具有最佳的电催化活性,电荷转移电阻低至 9.2 Ω cm2,并且在电解液中具有良好的化学和电化学稳定性。在 100 mW cm-2 和 AM 1.5 G 的背光照明下,使用金/铂电极组装的电池可提供 2.35 mW cm-2 的最大功率密度和 2.35% 的效率。
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来源期刊
CiteScore
4.80
自引率
4.00%
发文量
227
审稿时长
4.1 months
期刊介绍: The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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