Article
Energy & Fuels
Rongshuai Cong, Huan Zhang, Changlu Xu, Guiyin Fang
Summary: MA/PVB/CNTs composite phase change materials with high latent heat were synthesized by solution blending method. The addition of CNTs enhanced the thermal conductivity of the composites, which exhibited high thermal stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
H. S. Rothberg, S. Pietsch-Braune, L. Spahr, Y. Kanina, S. Heinrich
Summary: Bio composites exhibit excellent mechanical properties, making them suitable for various applications such as tooth replacement materials and industrial structural materials. The suspension composition was identified as the key factor influencing product properties, and composite materials with high bending strength and Young's modulus were successfully produced using a Nano Spray Dryer.
Article
Polymer Science
Xinya Jin, Wenbin Li, Guizhen Ke
Summary: A novel composite yarn was prepared by simple sizing coating with polyester as core yarn and polyvinyl butyral and zirconium carbide suspension as slurry. The composite yarn exhibited a core-shell structure with zirconium carbide particles deposited on the surface coating. The fabric made of the composite yarn showed a high near-infrared absorption rate and good photothermal conversion property. The PVB/ZrC coating provided excellent UV protection and had little effect on thermal stability of the composite yarn.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Wenwen Luan, Li Sun, Zuoxiang Zeng, Weilan Xue
Summary: In this study, a deep eutectic solvent (DES) was used as the catalyst to optimize the synthesis process of PVB. The results showed that DES played a dual role in catalysis and dispersion in the synthesis of PVB and had great application potential in PVB industrial production.
Article
Energy & Fuels
Changlu Xu, Wenze Wang, Huan Zhang, Guiyin Fang
Summary: Composite phase-change materials (CPM) were prepared using PG, PB and GP. The experiment showed that CPM3 had the best thermal performance with a thermal conductivity of 2.04 W/(m.K), 8.87 times higher than pure PG. CPM3 also demonstrated good thermal reliability, making it a promising material for solar energy utilization, building energy conservation and waste heat recovery.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Polymer Science
Xuelian Liu, Thibault Gallavardin, Fabrice Burel, Daniela Vuluga
Summary: An easily accessible supramolecular polymer was reported, which was made from polyvinyl butyral (PVB) by cross-linking with non-covalent self-complementary ureido-pyrimidinone (UPy) dimers. The resulting materials exhibited multifunctional properties, including self-healing and shape memory, as well as enhanced thermo-mechanical resistance. The UPy content played a crucial role in tuning the polymer performances.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Multidisciplinary
Tobias Abzieher, Thomas Feeney, Fabian Schackmar, Yidenekachew J. Donie, Ihteaz M. Hossain, Jonas A. Schwenzer, Tim Hellmann, Thomas Mayer, Michael Powalla, Ulrich W. Paetzold
Summary: The study investigates the impact of substrate material selection on co-evaporated perovskite thin films in vacuum processes, highlighting the significant influence on film morphology and incorporation of organic compounds. A selection guide for efficient co-evaporated perovskite thin films is derived, along with a proposed basic crystallization model for co-evaporated perovskite thin films based on insights into film formation on different substrate materials.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Energy & Fuels
Bohui Lu, Yongxue Zhang, Jinya Zhang, Jianjun Zhu, Hongyu Zhao, Zixi Wang
Summary: In this study, paraffin/nano-Fe3O4 composite phase change material (PCM) was prepared to enhance thermal conductivity. The results showed that under the optimal preparation conditions, the thermal conductivity of the composite PCM increased by 53% in the solid state and 79% in the liquid state compared to pure paraffin. Additionally, the charging and discharging time were reduced by 36.96% and 39.85% respectively.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Ahmed T. Hamada, Omar Z. Sharaf, Mehmet F. Orhan
Summary: This study explores the use of nano-encapsulated phase-change material dispersion in a double-pass photovoltaic/thermal solar collector, providing optical filtering, heat transfer, and energy storage functions. The performance of the system is analyzed under different conditions, and compared to alternative configurations, showing lower cell temperatures and improved thermal and electrical performance. This research opens up possibilities for novel PV/T collectors using smart, multi-functional fluids.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Wenjing Chen, Shikun Xiao, Yi Liu, Xiaowu Hu, Yuqiong Xie, Yichi Liu, Yan Ma, Lixiang Luo, Xiongxin Jiang
Summary: This research focuses on solving the problems of low thermal conductivity and easy leakage in phase change materials (PCM) by preparing a series of novel composite PCM. By immersing polyethylene glycol (PEG) into MXene-wrapped wood-based porous carbon support materials, the resulting composite PCM shows improved thermal properties and enhanced photo-thermal conversion efficiency, making it suitable for heat storage, solar thermal absorption, and heat management of electronic devices.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Xinglong Pan, Michael G. Debije, Albert P. H. J. Schenning, Cees W. M. Bastiaansen
Summary: This study prepared high thermal conductivity polymer composite materials using water-soluble PVA and dispersible GO, with the help of a co-additive to improve dispersion and thermal conductivity. The hydrogen bonding between GO and PVA, along with the alignment in composite films, contributed to the improved thermal conductivity. This work offers a new method for preparing water-processable polymer composite films with high thermal conductivity, potentially useful for thermal management applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jinghao Huo, Guoqiang Zhang, Xiaoyan Yuan, Shouwu Guo
Summary: In this study, reduced graphene oxide (rGO) nanosheets were spray-coated onto electrospun polyvinyl alcohol (PVA) nanofibers to fabricate a multilayer rGO/PVA film. The resulting flexible H-rGO/PVA-4 composite exhibited high thermal conductivity and was used as a thermal-interface material (TIM) for effective thermal management. Compared to a pure PVA film, the H-rGO/PVA-4 TIM facilitated lower surface temperatures for LED lamps. This study provides a universal approach for fabricating heat-dissipating composites of 2D materials and polymer films.
ACS APPLIED NANO MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Katelyn P. Goetz, Alexander D. Taylor, Yvonne J. Hofstetter, Yana Vaynzof
Summary: Perovskites have high efficiency but face challenges due to the toxicity and instability of their lead-based active layer, along with other environmental concerns revealed in life cycle analyses. Encapsulation and recycling are highlighted as ways to reduce negative environmental impact.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Forestry
Shuang-Shuang Wu, Xin Tao, Wei Xu
Summary: This study aims to improve the heat conduction of fast-growing poplar wood veneer through impregnation of graphene/Polyvinyl alcohol (Gr/PVA) mixture. The optimal impregnation formula of 10 wt.% PVA concentration and 2 wt.% MGEIN addition results in a thermal conductivity of 0.22 W/m·K, which is 2.4 times higher than the untreated veneer. The dispersibility and impregnation effect of the mixtures are affected by the Gr/PVA ratio, leading to changes in the thermal properties of the modified veneer.
Article
Multidisciplinary Sciences
Ruofan Du, Yuzhu Wang, Mo Cheng, Peng Wang, Hui Li, Wang Feng, Luying Song, Jianping Shi, Jun He
Summary: This study presents the synthesis of two-dimensional p-doped SnSe material using a physical vapor deposition approach, demonstrating the coexistence of room-temperature ferrimagnetism and ferroelectricity. This is significant for exploring the magnetoelectric coupling in the two-dimensional limit and constructing high-performance logic devices.
NATURE COMMUNICATIONS
(2022)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.
