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Tailored ZnO Nanostructure Based Quasi-Solid-State Electrolyte and Mesoporous Carbon Electrocatalyst for Solar Energy Conversion
ECS Journal of Solid State Science and Technology ( IF 2.2 ) Pub Date : 2021-08-20 , DOI: 10.1149/2162-8777/ac1c9b
Young Eun Kim 1 , Youngjin Chae 2 , Juyoung Moon 1 , Jae Yeon Lee 1 , Uoon Chul Baek 1 , Jung Tae Park 1
Affiliation  

We have investigated the photoelectrochemical influence of quasi-solid-state electrolytes based on tailored ZnO nanostructures and mesoporous carbon electrocatalyst in the solar conversion performance of dye-sensitized solar cells (DSSCs). Tailored ZnO nanostructures with rod-shaped petals (ZnO nanorod) and almond-shaped petals (ZnO nanoalmond), were prepared using the hydrothermal method, respectively. Mesoporous carbon electrocatalyst with a high surface area is obtained by the carbonization of the PVDC-g-POEM double comb copolymer. The phase and structure of tailored ZnO nanostructures were investigated using scanning electron microscopy (SEM) and wide angle X-ray scattering (WAXS). Diffuse reflectance, intensity-modulated photocurrent spectroscopy (IMPS)/intensity-modulated photovoltage spectroscopy (IMVS), electrochemical impedance spectroscopy (EIS) measurements were used to investigate the optical and electrochemical properties of quasi-solid-state electrolytes. The quasi-solid-state electrolytes based on ZnO nanorod significantly improved the solar conversion performance owing to its enhanced scattering effect, ion diffusion, effective path for redox couple transfer, and sufficient penetration of quasi-solid-state electrolytes into the electrode. The quasi-solid-state electrolytes based on ZnO nanorod, ZnO nanoalmond and mesoporous carbon electrocatalyst showed a solar conversion efficiency of 6.4%, 5.4%, respectively, which is higher than that of the polymer gel electrolytes (4.7%).



中文翻译:

用于太阳能转换的基于ZnO纳米结构的准固态电解质和介孔碳电催化剂

我们研究了基于定制 ZnO 纳米结构和介孔碳电催化剂的准固态电解质对染料敏化太阳能电池 (DSSC) 太阳能转换性能的光电化学影响。分别使用水热法制备了具有棒状花瓣(ZnO纳米棒)和杏仁状花瓣(ZnO纳米杏仁)的定制ZnO纳米结构。通过 PVDC- g的碳化获得具有高表面积的介孔碳电催化剂-POEM 双梳共聚物。使用扫描电子显微镜 (SEM) 和广角 X 射线散射 (WAXS) 研究了定制 ZnO 纳米结构的相和结构。漫反射、强度调制光电流谱 (IMPS)/强度调制光电压谱 (IMVS)、电化学阻抗谱 (EIS) 测量用于研究准固态电解质的光学和电化学性质。基于ZnO纳米棒的准固态电解质由于其增强的散射效应、离子扩散、氧化还原对转移的有效路径以及准固态电解质充分渗透到电极中,显着提高了太阳能转换性能。基于ZnO纳米棒的准固态电解质,

更新日期:2021-08-20
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