Article
Energy & Fuels
Linfeng Li, Yaoqi Huang, Wenbin Li, Liyi Zou, Xi Wu, Yuanyuan Li, Xiaomin Cheng
Summary: The aim of this paper is to regulate the thermal properties, especially the thermal conductivity, of microencapsulated phase change materials (MEPCMs) using atomic layer deposition (ALD) coating. The introduction of ALD zinc oxide (ZnO) shell decreases the phase transition enthalpy of MEPCM, but optimizes the thermal stability and phase transition reversibility. It is worth mentioning that the thermal conductivity of MEPCM can be adjusted from 0.16 to 1.99 W m(-1) K-1 within the ALD cycle range given in this research. The research provides a strategy to accurately regulate the thermal conductivity of phase change microcapsules, overcoming the bottleneck in their application.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Paula F. De Castro, Sergiy Minko, Vladimir Vinokurov, Kirill Cherednichenko, Dmitry G. Shchukin
Summary: Microcapsules loaded with n-docosane as phase change material have been successfully used to impregnate cotton fabrics, providing temperature buffering and increase effects during heating and cooling processes. The impregnated fabrics maintained stable performance even after long-term storage, demonstrating high potential for commercial applications in thermal management.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Cuiying Tan, Yunqing He, Binghong Luo, Mingxian Liu
Summary: In this study, Pickering emulsion stabilized with chitin nanocrystals (ChNCs) was used to prepare paraffin wax (PW) microcapsules with a dense shell, and loaded into metal foam to enhance thermal conductivity. The PW microcapsules showed good thermal cycling stability and satisfactory latent heat storage capacity. The encapsulation of the polymer shell provided high encapsulation efficiency, non-leakage properties under prolonged high temperature conditions, and high flame retardancy. This study demonstrates a new design strategy using natural and sustainable nanomaterials stabilized PCMs, which has promising applications in energy management and thermal regulation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Nanoscience & Nanotechnology
Wei Liu, Qingyi Lin, Siyu Chen, Hongbin Yang, Kun Liu, Bo Pang, Ting Xu, Chuanling Si
Summary: Phase change materials (PCMs) have the ability to store and release large amounts of energy during melting and crystallization processes, making them highly promising for temperature regulation and thermal energy storage applications. In this study, PCM microcapsules with melamine-formaldehyde resin (MF) shells were prepared using in situ polymerization of Pickering emulsions stabilized by cellulose nanofibrils (CNFs) for addressing PCM leakage and enhancing thermal conduction. Paraffin wax (PW) was utilized as the PCM material. The resulting microcapsules exhibited high latent heat of crystallization and fusion, with the microcapsules with a core-shell ratio of 2 (Micro-2.0) showing the highest values. The encapsulation efficiency of Micro-2.0 was determined to be approximately 79.84%.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Construction & Building Technology
Yunlong Zhang, Meizhu Chen, Yuechao Zhao, Shaopeng Wu, Dongyu Chen, Zhengxu Gan, Yansong Fan
Summary: A novel type of microencapsulated phase change material (MPCM) was prepared using waste cooking oil and studied for its application in foamed concrete. The MPCM showed suitable phase change temperature, enthalpy, and decomposition temperature for adjusting indoor temperature. The particle size of the MPCM also contributed to the increased strength of the foam concrete. Moreover, the MPCM demonstrated its ability to mitigate the impact of ambient temperature on buildings in thermal imaging experiments.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Weiping Li, Dajiang Mei, Jihu Wang, Hui Wu, Shaoguo Wen
Summary: A novel microencapsulated phase change material (MCPCM) with hybrid shells of melamine-urea-formaldehyde (MUF) and sulfonated graphene (SG) was prepared, and it showed improved contact angles, leak-proof performance, and mechanical strength compared to MCPCM without SG. This MCPCM has great potential for application in thermal energy storage and management systems.
Article
Energy & Fuels
Zide Wu, Xinyu Zhai, Ziliang Rui, Xudong Xu, Chunxiang Wang, Hao Peng
Summary: This study developed thermochromic microencapsulated phase change materials (TC-MPCMs) for pharmaceutical cold chain logistics, which can provide temperature indication and low temperature storage. The TC-MPCMs showed excellent morphology and dispersion at a SMA:gelatin ratio of 2:1, with a particle size distribution ranging from 4.5 μm to 19.5 μm. The TC-MPCMs with 25% 12OH content and a core/shell ratio of 1.85 demonstrated high encapsulation efficiency, melting enthalpy, and color difference. The synthesized TC-MPCMs exhibited thermal durability and stability, and a vaccine refrigerator was designed based on these materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Kaan Cakti, Ibrahim Erden, Serhat Gunduz, Sajjad Hassanpour-Kasanagh, Baris Buyuk, Cemil Alkan
Summary: The rheological properties of asphalt pavement are affected by temperature, and the addition of phase change materials can improve its anti-freezing performance. This study prepared microencapsulated phase change materials with different shell materials, demonstrating that MPCMs have higher heat storage capacity and exhibit high thermal durability at high temperatures. In addition, the addition of MPCMs can effectively prevent the leakage of PCM and maintain the physical properties of bitumen.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Construction & Building Technology
Yingbin Wang, Qi Li, Wenjuan Miao, Ying Su, Xingyang He, Bohumir Strnadel
Summary: Phase change materials (PCMs) have great potential for building energy conservation. Encapsulated PCMs (MPCMs) with inorganic silica shells can enhance the thermal performance of cement-based materials. The prepared MPCMs increased the enthalpy of phase change and decreased the thermal conductivity of cementitious composites. The thermal properties of cement pastes were strongly dependent on the volume fraction of MPCMs and the temperature ramp.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Ceramics
Qun Ma, Deqiu Zou, Yinshuang Wang, Ke Lei
Summary: Ceramic composites are commonly used in medium/high temperature thermal energy storage and catalysis. The combination of PCMs with ceramic materials can effectively improve TES capacity, but precautions need to be taken for PCM leakage. This paper prepared a novel MEPCM with thermal expansion void and two ceramic composites, showing great potential in energy storage and catalysis.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Reza Gheisari, Mariela Vazquez, Vasilis Tsigkis, Ali Erdemir, Karen L. Wooley, Andreas A. Polycarpou
Summary: In order to solve the wear problem in polymer dry sliding applications, we introduced a novel additive, microencapsulated phase change material (MPCM), into an advanced polymeric coating. The research found that the MPCM-filled composite exhibited unique tribological behavior, manifested as zero wear and a super-low coefficient of friction (COF) of 0.05. Under the experimental conditions examined, the developed composite outperformed the state-of-the-art polytetrafluoroethylene (PTFE)-filled coatings.
Article
Chemistry, Applied
Dechao Hu, Zhiqiang Wang, Wenshi Ma
Summary: Novel PU-based MEPCMs with high latent heat storage capacity were successfully fabricated, with further optimization of preparation conditions and core/shell mass ratio expected to enhance performance and potentially broaden applications in thermal energy storage fields.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Energy & Fuels
Valentina Sierra, Farid Chejne
Summary: A mathematical model for designing constructive systems with thermally efficient microencapsulated phase change materials (MPCM) in mortar was developed. The model quantifies the impact of design variables, such as MPCM percentage, wall thickness, and application method, on room temperature. The results show that external application of MPCM can reduce the internal room temperature, while internal application can maintain a uniform temperature.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Qinglin Li, Xiaodong Ma, Xiaoyu Zhang, Jiqiang Ma, Jiaolong Liu, Xiaowu Hu, Yefeng Lan
Summary: The improvement of micro-en-capsulated phase change materials (MEPCMs) through a three-step process has been shown to enhance thermal stability by forming a dense and durable Al2O3 shell, resulting in excellent heat storage capacity. By adjusting the amount of Al(OH)3 in the precipitation treatment, the thickness of the Al2O3 shell layer can be controlled, contributing to the high thermal durability and cycling stability of the MEPCMs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Energy & Fuels
K. W. Wang, Ting Yan, W. G. Pan
Summary: Phase change materials (PCMs) have attracted attention for their ability to store and release latent heat, but face issues such as leakage and low thermal conductivity. Encapsulation technology can help address these problems. This review focuses on the optimization of thermal storage performance and the preparation of microencapsulated phase change materials (MEPCMs), introducing encapsulation methods and strategies for improving their performance.
JOURNAL OF ENERGY STORAGE
(2023)
