APL Energy最新文献_第2页

Molecular size exclusion effect extending the cycling stability of a non-aqueous redox flow battery 分子尺寸排斥效应扩大了非水氧化还原液流电池的循环稳定性

APL Energy Pub Date : 2023-10-23 DOI: 10.1063/5.0167853

Sandeep Kumar Mohapatra, Kothandaraman Ramanujam, Sethuraman Sankararaman

引用次数: 0

Critical and controversial issues pertaining to the growth and properties of Cu2O in the context of energy conversion 在能量转换的背景下，与Cu2O生长和性质有关的关键和有争议的问题

APL Energy Pub Date : 2023-10-20 DOI: 10.1063/5.0165856

Eleni Prountzou, Andreas Ioannou, Dimitrios Sapalidis, Eleni Pavlidou, Maria Katsikini, Andreas Othonos, Matthew Zervos

{"title":"Critical and controversial issues pertaining to the growth and properties of Cu2O in the context of energy conversion","authors":"Eleni Prountzou, Andreas Ioannou, Dimitrios Sapalidis, Eleni Pavlidou, Maria Katsikini, Andreas Othonos, Matthew Zervos","doi":"10.1063/5.0165856","DOIUrl":"https://doi.org/10.1063/5.0165856","url":null,"abstract":"Cu2O has been deposited on m-, r-, and a-Al2O3 by reactive sputtering of Cu using Ar with different contents of O2 followed by annealing under carefully optimized conditions at 500 °C under Ar:H2 in order to prevent the oxidation and reduction of the Cu2O layers, which have a cubic crystal structure and are bulk-relaxed. We find that the content of O2 influences the structural and optical properties of the Cu2O layers that exhibited a detailed spectral structure and distinct peaks at 2.75, 2.54, and 2.17 eV corresponding to the indigo, blue, and yellow direct gap transitions of Cu2O as observed by ultrafast pump–probe spectroscopy at room temperature. However, we also observed a transition at 1.8 eV that is related to the occurrence of states ∼0.4 eV below the conduction band minimum of Cu2O. We discuss the controversial origin of these states, which are usually attributed to donor-like oxygen vacancy states, and suggest that the origin of these states may be related to traps at the interfaces of CuO/Cu2O nanostructures, which is important in the context of energy conversion pertaining to solar cells and photocatalysis.","PeriodicalId":486383,"journal":{"name":"APL Energy","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135569678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thickness effect of thin-film barrier layers for enhanced long-term operation of solid oxide fuel cells 增强固体氧化物燃料电池长期运行的薄膜阻挡层厚度效应

APL Energy Pub Date : 2023-10-17 DOI: 10.1063/5.0159765

L. Bernadet, F. Buzi, F. Baiutti, J. Segura-Ruiz, J. Dolado, D. Montinaro, M. Torrell, A. Morata, A. Tarancón

{"title":"Thickness effect of thin-film barrier layers for enhanced long-term operation of solid oxide fuel cells","authors":"L. Bernadet, F. Buzi, F. Baiutti, J. Segura-Ruiz, J. Dolado, D. Montinaro, M. Torrell, A. Morata, A. Tarancón","doi":"10.1063/5.0159765","DOIUrl":"https://doi.org/10.1063/5.0159765","url":null,"abstract":"Highly efficient solid oxide cells are one of the most promising technologies for a sustainable future based on renewable hydrogen. The diffusion barrier layer employed between zirconia-based electrolytes and state-of-the-art oxygen electrodes aims to limit the formation of electrically insulating secondary phases that dramatically reduce the cells’ performance. Conventional barrier layers manufactured by screen-printing technology lead to porous microstructures that enable the formation of insulating SrZrO3, partially blocking the active area of the cells. Opposite, homogeneous and dense barrier layers have proven to be the ultimate solution to limit interdiffusion, substantially improving the cells’ performance. Despite the relevance of this solution, the impact of the barrier layer thickness on the final performance of the cells is still unknown. In this work, gadolinia-doped ceria barrier layers with thicknesses between 200 and 800 nm made by pulsed laser deposition were studied in button cells. Excellent electrochemical performance was obtained for all the cells, improving 45% of the power output of the reference counterparts. Moreover, durability tests performed on the cell with the thinnest layer (200 nm) did not show any measurable degradation for 3500 h of continuous operation under high current densities of 0.77 A cm−2 (∼0.87 V) at 750 °C. Post-mortem characterization by synchrotron nano-x-ray fluorescence of a pristine cell and the aged cell allowed us to observe that some spots of SrZrO3 were present at the cathode/electrolyte interface since the cell manufacturing step without increasing during long-term operation. Indeed, the discontinuity of this insulating phase seems not to be critical for cell operation.","PeriodicalId":486383,"journal":{"name":"APL Energy","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136033098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Outdoor stability testing of perovskite solar cells: Necessary step toward real-life applications 钙钛矿太阳能电池的室外稳定性测试:走向实际应用的必要步骤

APL Energy Pub Date : 2023-09-01 DOI: 10.1063/5.0155845

Muhammad Umair Ali, Hongbo Mo, Yin Li, Aleksandra B. Djurišić

引用次数: 0

Radiation tolerance and self-healing in triple halide perovskite solar cells 三卤化物钙钛矿太阳能电池的耐辐射性能和自修复性能

APL Energy Pub Date : 2023-09-01 DOI: 10.1063/5.0158216

Hadi Afshari, Sergio A. Chacon, Shashi Sourabh, Todd A. Byers, Vincent R. Whiteside, Rose Crawford, Bibhudutta Rout, Giles E. Eperon, Ian R. Sellers

引用次数: 0

APL Energy introduces a new type of manuscript: Proof of Concept and Prototype APL能源公司推出了一种新型的手稿:概念和原型证明

APL Energy Pub Date : 2023-09-01 DOI: 10.1063/5.0175186

Francesco Matteucci, David Calabro, Monica Lira-Cantu

引用次数: 0