Article
Electrochemistry
Kaiyuan Yang, Xichuan Yang, Zijian Deng, Miao Jiang
Summary: A novel copper complex (CuL) was designed and applied in dye-sensitized solar cells as a redox couple. It was found that this copper complex has excellent stability and inhibits photoelectron recombination, leading to better stability and photoelectric conversion efficiency compared to traditional copper electrolytes.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Ke Deng, Jacqueline M. Cole, Joshaniel F. K. Cooper, John R. P. Webster, Richard Haynes, Othman K. Al Bahri, Nina-Juliane Steinke, Shaoliang Guan, Liliana Stan, Xiaozhi Zhan, Tao Zhu, Daniel W. Nye, Gavin B. G. Stenning
Summary: The importance of the electrolyte/dye/TiO2 interface structures within DSC devices is discussed in this study, with a proposed method of using in situ neutron reflectometry to analyze these structures.
Article
Energy & Fuels
Balasubramanian Karuppasamy, Balusamy Shenbagabalakrishnan, Venkatachari Gayathri
Summary: The photovoltaic performance of aqueous Al-ion electrolyte-based dye-sensitized solar cells was investigated, showing an efficiency 50% higher than the quoted value and an 80% enhancement with antimony-doped tin oxide compared to undoped tin oxide.
Article
Chemistry, Physical
Ambarish Kumar Singh, Jayaraj Nithyanandhan
Summary: The study explored a series of amphiphilic indoline-based unsymmetrical squaraine dyes, where alkyl groups and glycolic chain were systematically modified to control self-assembly and improve interfacial properties. In nonaqueous DSSCs, increasing the number of carbon atoms in alkyl groups enhanced photovoltaic efficiencies. Addition of chenodeoxycholic acid improved efficiency, while increased carbon atoms in the alkyl groups had a detrimental effect on aqueous DSSC efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Zhemin Li, Qizhao Li, Chengjie Li, Yongshu Xie
Summary: Dye-sensitized solar cells (DSSCs) have the advantages of environmental friendliness, easy fabrication, and rich colors, making them promising for applications in architectural decoration and power supply for low energy devices. However, porphyrin dyes used in DSSCs still suffer from absorption defects and aggregation tendencies. In order to address these issues, various approaches have been developed to achieve panchromatic absorption and high efficiency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Electrochemistry
Mucella Ozbay Karakus, Merve Eren Yakisiklier, Ali Delibas, Hidayet Cetin
Summary: This study investigates the effect of the network structure of hydrogels on the performance of quasi-solid gel electrolytes in DSSCs. Increasing cross-linking during synthesis improves conductivity but does not necessarily increase energy conversion efficiency in DSSCs. Cross-linking also affects the swelling, wetting, and morphological properties of the hydrogels.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Jayadev Velore, Sourava Chandra Pradhan, Thomas W. Hamann, Anders Hagfeldt, K. N. Narayanan Unni, Suraj Soman
Summary: The study evaluates the effect of illumination intensity on the photocurrent generation and its relationship to mass transport using the best cosensitized dye and copper electrolyte combination.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Sourava Chandra Pradhan, Jayadev Velore, Sruthi Meledath Meethal, Suraj Soman
Summary: Dye coverage has a significant influence on the photovoltaic parameters of copper-electrolyte-based dye-sensitized solar cells, with an optimal dye concentration of 0.1 mM. Dye coverage does not affect electron injection, dye regeneration, charge collection, and ion diffusion.
Article
Multidisciplinary Sciences
Seok Jeong, Junmo Seong, Sung Wook Moon, Jaewoong Lim, Seung Bin Baek, Seung Kyu Min, Myoung Soo Lah
Summary: The spatial distribution of mixed building blocks in metal-organic frameworks can be modulated by tuning the reaction temperature, leading to the formation of core-shell and uniform microstructures.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Dheeraj Devadiga, M. Selvakumar, Prakasha Shetty, M. S. Santosh
Summary: Dye-sensitized solar cells are an efficient method of converting energy and have the potential to be a future energy source. Integration with rechargeable energy storage systems has addressed the issue of power output in photovoltaic conversion systems.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Shanmuganathan Venkatesan, Nguyen Huong Tra My, Hsisheng Teng, Yuh-Lang Lee
Summary: Thin films of solid-state polymer electrolytes (SSPEs) have been developed for dye-sensitized solar cells (DSCs) for the first time. Gel-electrolytes are prepared by utilizing a blend of poly(ethylene oxide) (PEO)/polyethylene glycol (PEG) and an acetonitrile-based iodide liquid electrolyte, and then cast onto a glass substrate to fabricate solvent-free SSPEs by evaporating the solvent. The SSPE films are sandwiched between photoelectrodes and counter electrodes to assemble the solid-state DSCs, and the PCE can be improved by introducing TiO2 nanofillers in the SSPEs. The high stability of the solid-state DSCs is demonstrated with a retention of 98% of their original efficiency after a 700-hour test period.
JOURNAL OF POWER SOURCES
(2023)
Review
Biochemistry & Molecular Biology
Luca Mauri, Alessia Colombo, Claudia Dragonetti, Dominique Roberto, Francesco Fagnani
Summary: Thiocyanate-free ruthenium(II) complexes have gained increasing interest in DSSCs due to their better stability compared to conventional thiocyanate-based complexes. This mini-review introduces two classes of these ruthenium(II) complexes, focusing on their design strategies and photovoltaic properties.
Article
Materials Science, Multidisciplinary
M. Z. Najihah, I. M. Noor, Tan Winie
Summary: This study investigates the use of acetone as the optimal solvent for extracting chlorophyll from Costus woodsonii leaves, and explores the performance of chlorophyll as a dye sensitizer for DSSC. By studying the adherence of chlorophyll pigment to the TiO2 surface and the movement of electrons at the interface, the highest efficiency of chlorophyll DSSC is achieved.
Article
Engineering, Electrical & Electronic
Subhrajit Konwar, Pramod K. Singh, Pawan Dhapola, Abhimanyu Singh, Serguei V. Savilov, Muhd Zu Azhan Yahya, Sirin Siyahjani Gultekin, Burak Gultekin
Summary: This paper deals with the synthesis, characterization, and application of low-viscosity ionic liquids as dopants and biopolymers as the host. The ionic liquid enhances the ionic conductivity and thermal stability of the biopolymer electrolyte, leading to the development of highly conducting ionic-liquid-doped biopolymer electrolyte-based devices such as electrochemical double-layer capacitors and dye-sensitized solar cells.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Energy & Fuels
Lingamoorthy Sivasankaran, Sourava Chandra Pradhan, Rakesh K. Mishra, Suraj Soman, Ayyappanpillai Ajayaghosh
Summary: Cobalt-based redox mediators are considered promising alternatives to conventional electrolyte in dye sensitized solar cells. This study systematically investigates the structure-property correlations of two cobalt redox mediators, revealing the suppressing effect of bulky t-butyl groups on recombination between TiO2 and redox mediator.
Article
Chemistry, Physical
M. A. K. Yousaf Shah, Yuzheng Lu, Naveed Mushtaq, Muhammad Yousaf, Peter D. Lund, Muhammad Imran Asghar, Bin Zhu
Summary: Reducing the operational temperature of solid oxide fuel cells (SOFC) is important for enhancing their durability and lifetime. A new electrolyte layer made of gadolinium-doped ceria (GDC) was synthesized using a wet chemical co-precipitation technique, demonstrating impressive fuel cell performance, high ionic conductivity, and better stability at a low temperature of 450 degrees C. This study suggests the possibility of designing new electrolytes for advanced low-temperature fuel cell technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
M. A. K. Yousaf Shah, Yuzheng Lu, Naveed Mushtaq, Muhammad Yousaf, Muhammad Akbar, Sajid Rauf, Yiwang Dong, Peter D. Lund, Bin Zhu, Muhammad Imran Asghar
Summary: This study focuses on designing a Co/Fe-SrTiO3 semiconductor perovskite as an electrolyte membrane to enhance its ionic conduction. Through surface-enriched O-vacancies, the doped Co/Fe lowers the Fermi level, leading to improved ionic conductivity. The designed electrolyte exhibits high ionic conductivity (0.19 S/cm) and enables a fuel cell to achieve a maximum power density of 1016 mW/cm2 at 520 degrees C. The surface doping of Co/Fe facilitates enriched surface channels for quick ion transportation with lower activation energy, making it a suitable approach for developing advanced materials for wide bandgap semiconductors with high ionic conductivity for next-generation CFCs.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Thermodynamics
Gong Jing-hu, Li Yong, Wang Jun, Peter Lund
Summary: A multi-stage heating technology is proposed to improve the efficiency and outlet temperature by using multiple absorber tubes that increase the temperature from 300 degrees C to 580 degrees C. The large-aperture multi-stage PTC solar power in Dunhuang, China, has an annual average solar-to-electric efficiency of 24.50%, higher than the current 20%. Homogenizing the solar radiation flux at the high-temperature section can reduce the length of the high-temperature region and increase the thermal efficiency.
Article
Engineering, Industrial
Justinas Jasiunas, Tatu Heikkinen, Peter D. Lund, Ilona Lang-Ritter
Summary: A small number of strong windstorms can cause major power interruptions and potentially shift the strategic direction of energy system development. Existing analysis tools do not effectively capture the effects on distribution grids over large areas with diverse environments. This paper presents a national-scale power disruption model that integrates synthetically generated power grids, consumption profiles, fragility functions, and windstorm severity dependent fixing times to accurately reproduce historical outage data.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Green & Sustainable Science & Technology
Yuekuan Zhou, Peter D. Lund
Summary: P2P energy sharing can complement other energy management strategies in the transition to clean energy. Advances in AI, machine learning, and IoT provide solutions for efficient P2P energy sharing and trading. This review covers system configurations, pricing mechanisms, and decision-making in dynamic P2P energy trading along with collaboration and operations among stakeholders.
Article
Energy & Fuels
Jing-hu Gong, Zhi-hao Sun, Jun Wang, Peter D. Lund
Summary: In this study, a metal heat pipe is replaced with a glass heat pipe to address the sealing problem in the joint between the glass outer layer and the metal. A reflective film is added to the lower part of the outer tube to improve energy efficiency. The results show that the all-glass structure can cope with transient local heating changes and adding a reflective film increases optical efficiency and energy output.
Article
Energy & Fuels
Farid Elsehrawy, Bettina Blomstedt, Elina Ilen, Elina Palovuori, Janne Halme
Summary: Integrating solar cells into textiles for wearable electronics requires careful optimization for energy efficiency and aesthetic appearance. This study systematically investigates the optical properties of knitted textiles as visually concealing covers for textile-integrated solar cells. By studying 175 knitted samples using optical characterization methods, the researchers developed metrics to evaluate solar cell performance and visual appearance, enabling the optimization of textiles based on desired characteristics. The findings demonstrate a design compromise between solar cell performance and concealment, with 23 samples out of 175 identified as the best in performance and concealment.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Multidisciplinary Sciences
Elena S. Akulenko, Mahboubeh Hadadian, Annukka Santasalo-Aarnio, Kati Miettunen
Summary: Photovoltaic development should be guided by the circular economy, but currently it is not. Perovskite photovoltaics face challenges in profitable recycling due to environmental directives. This study investigates the profitability of noble metals recovery in wasted perovskite solar cells and shows that substrates and device architecture play significant roles. It emphasizes the importance of eco-design to ensure successful recycling and recovery of critical materials.
Article
Chemistry, Physical
Xuelan Hou, Hang Zhang, Ramesh Raju, Yongdan Li, Peter D. Lund
Summary: Improving light absorption and conversion ability is crucial for enhancing the performance of photoelectrochemical (PEC) cells in converting solar radiation into chemical energy. This study demonstrates a simple and low-cost method to prepare a nanostructured TiOx film with tunable absorption range from 250 to 2500 nm, surpassing the absorption edge of TiO2. The film shows superior light capture ability and a 10-fold increase in charge carrier transfer rate under AM 1.5 G light. It has potential for large-area PEC cells with promoted charge carriers' transfer.
JOURNAL OF POWER SOURCES
(2023)
Article
Environmental Studies
Zhicheng Xu, Jun Wang, Peter D. Lund, Yaoming Zhang
Summary: This paper implements data-driven modeling and analysis of energy consumption based on low-frequency real-world electric bus data. The study identifies and calculates two quantitative metrics of energy consumption and establishes supervised learning models to predict energy consumption. The relationship between factors such as temperature, driver/vehicle-related, and road-related factors and energy consumption is explained through quantitative and qualitative analysis.
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2023)
Article
Energy & Fuels
Bingkun Huang, Shimi Yang, Xiuxiu Li, Jun Wang, Peter D. Lund
Summary: Phase change materials (PCMs) are effective for thermal energy storage and supply-demand balance. Numerical analyses were performed to improve the melting-solidification process in PCMs using a 2-D cavity with two heat sources and wavy sinusoidal fins. The influence of different fin arrangements was analyzed.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
M. A. K. Yousaf Shah, Yuzheng Lu, Naveed Mushtaq, Muhammad Yousaf, Peter D. Lund, Muhammad Imran Asghar, Bin Zhu
Summary: Reducing the operational temperature of solid oxide fuel cells (SOFC) is crucial for improving their durability and lifetime. Gadolinium-doped ceria (GDC) synthesized through a wet chemical co-precipitation technique shows impressive fuel cell performance and high ionic conductivity at a shallow temperature of 450 degrees C. The utilization of GDC as an electrolyte in low-temperature solid oxide fuel cells (LTSOFCs) demonstrates potential for developing advanced low-temperature fuel cell technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Sanaz Zarabi Golkhatmi, Peter D. Lund, Muhammad Imran Asghar
Summary: Inkjet printing is a fabrication technique that can tailor the electrode microstructure of solid oxide fuel cells. By optimizing ink composition and characteristics, and comparing with drop-casting, it was found that inkjet printing can provide hierarchical porous microstructure, increase reaction sites, and significantly improve fuel cell performance.
MATERIALS ADVANCES
(2024)