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Nanomaterials
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Functional Phase Change Materials in Nanoscale
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Functional Phase Change Materials in Nanoscale

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 4814

Special Issue Editor

Prof. Dr. Xiaodong Wang

E-Mail Website
Guest Editor
State Key Laboratory of Organic–Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Interests: energy chemistry and physics; phase change materials; microencapsulation technology; multifunctional phase-change microcapsules; heat energy storage; thermal management.
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Phase change materials (PCMs) are a family of chemical substances able to absorb or release large quantities of latent-heat thermal energy at a constant temperature by undergoing a phase transformation. PCMs have considerably higher thermal energy-storage densities in comparison to sensible heat-storage materials and can effectively improve energy efficiency by bridging the gap between energy availability and energy use, thus reducing energy waste. As a type of promising sustainable energy materials, PCMs have not only been applied in renewable energy effective utilization such as solar thermal energy and low temperature waste heat utilization such as industrial waste heat and waste heat from combined cooling, heating, and power systems, but also broadly used for thermal regulation and thermal management in the fields of photovoltaic–thermoelectric systems, pharmaceutical or biological products requiring cool storage, temperature-sensitive electronic parts or devices requiring cool or thermal protection, telecom shelters in tropical regions, energy-saving buildings, smart fibers and textiles with a thermoregulatory function, thermal buffering of Li-ion batteries, thermal comfort in vehicles, and many more.

In recent years, the functionalization of PCMs for multipurpose applications through nanocompositing or nanoencapsulation has received a great deal of attention from both the academic and industrial communities. Through innovative designs and fabrication in the nanoscale, PCMs can attain the additional functionality of photocatalysis, antibiosis, magnetism, electrical conduction, photoluminescence, and many more in addition to heat energy storage and thermal management.

This Special Issue of Nanomaterials aims to cover the most recent advances in nanostructured PCMs and relevant technologies, including but not limited to material design, fabrications, physical and chemical characterizations, and applications. Novel works on structure design for the functionality of PCMs in nanoscale for multipurpose applications are of utmost interest. We invite original papers in various formats, including full papers, communications, and reviews. The potential topics are as follows:

  • Innovative design of nanostructured PCMs and their composites;
  • Nano/microencapsulation of PCMs with enhanced thermal performance and additional functions;
  • Nanofabrication and nanostructural control of PCMs at the nanoscale;
  • New structures and new functions of PCMs in nanoscale;
  • Simulation analysis of PCMs in nanoscale of nanomaterials;
  • Multifunctional designs and multipurpose application of PCMs in nanoscale;
  • Environmentally friendly fabrication of nanostructured PCMs with multifunctions;
  • Other recent advances in nanostructured PCMs for multipurpose applications.

Prof. Dr. Xiaodong Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Innovative design of nanostructured PCMs and their composites
  • Nano/microencapsulation of PCMs with enhanced thermal performance and additional functions
  • Nanofabrication and nanostructural control of PCMs at the nanoscale
  • New structures and new functions of PCMs in nanoscale
  • Simulation analysis of PCMs in nanoscale of nanomaterials
  • Multifunctional designs and multipurpose application of PCMs in nanoscale
  • Environmentally friendly fabrication of nanostructured PCMs with multifunctions
  • Other recent advances in nanostructured PCMs for multipurpose applications

Published Papers (2 papers)

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17 pages, 4154 KiB  
Article
A Numerical Investigation of a Melting Rate Enhancement inside a Thermal Energy Storage System of Finned Heat Pipe with Nano-Enhanced Phase Change Material
by Anuwat Jirawattanapanit, Aissa Abderrahmane, Abe Mourad, Kamel Guedri, Obai Younis, Belgacem Bouallegue, Khanyaluck Subkrajang, Grienggrai Rajchakit and Nehad Ali Shah
Nanomaterials 2022, 12(15), 2519; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12152519 - 22 Jul 2022
Cited by 6 | Viewed by 2082
Abstract
Thermal energy storage via the use of latent heat and phase transition materials is a popular technology in energy storage systems. It is vital to research different thermal enhancement techniques to further improve phase transition materials’ weak thermal conductivity in these systems. This [...] Read more.
Thermal energy storage via the use of latent heat and phase transition materials is a popular technology in energy storage systems. It is vital to research different thermal enhancement techniques to further improve phase transition materials’ weak thermal conductivity in these systems. This work addresses the creation of a basic shell and a tube thermal storage device with wavy outer walls. Then, two key methods for thermal augmentation are discussed: fins and the use of a nano-enhanced phase change material (NePCM). Using the enthalpy–porosity methodology, a numerical model is developed to highlight the viability of designing such a model utilizing reduced assumptions, both for engineering considerations and real-time predictive control methods. Different concentrations of copper nanoparticles (0, 2, and 4 vol%) and wavenumbers (4,6 and 8) are investigated in order to obtain the best heat transmission and acceleration of the melting process. The time required to reach total melting in the studied TES system is reduced by 14% and 31% in the examined TES system, respectively, when NePCM (4 vol% nanoparticles) and N = 8 are used instead of pure PCM and N = 4. The finding from this investigation could be used to design a shell-and-tube base thermal energy storage unit. Full article
(This article belongs to the Special Issue Functional Phase Change Materials in Nanoscale)
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27 pages, 14502 KiB  
Article
Configuration of Multifunctional Polyimide/Graphene/Fe3O4 Hybrid Aerogel-Based Phase-Change Composite Films for Electromagnetic and Infrared Bi-Stealth
by Tao Shi, Zhiheng Zheng, Huan Liu, Dezhen Wu and Xiaodong Wang
Nanomaterials 2021, 11(11), 3038; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11113038 - 12 Nov 2021
Cited by 21 | Viewed by 3302
Abstract
Electromagnetic (EM) and infrared (IR) stealth play an important role in the development of military technology and the defense industry. This study focused on developing a new type of multifunctional composite film based on polyimide (PI)/graphene/Fe3O4 hybrid aerogel and polyethylene [...] Read more.
Electromagnetic (EM) and infrared (IR) stealth play an important role in the development of military technology and the defense industry. This study focused on developing a new type of multifunctional composite film based on polyimide (PI)/graphene/Fe3O4 hybrid aerogel and polyethylene glycol (PEG) as a phase change material (PCM) for EM and IR bi-stealth applications. The composite films were successfully fabricated by constructing a series of PI-based hybrid aerogels containing different contents of graphene nanosheets and Fe3O4 nanoparticles through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by loading molten PEG through vacuum impregnation. The construction of PI/graphene/Fe3O4 hybrid aerogel films provides a robust, flexible, and microwave-absorption-functionalized support material for PEG. The resultant multifunctional composite films not only exhibit high microwave absorption effectiveness across a broad frequency range, but also show a good ability to implement thermal management and temperature regulation under a high latent-heat capacity of over 158 J/g. Most of all, the multifunctional composite films present a wideband absorption capability at 7.0–16.5 GHz and a minimum reflection loss of −38.5 dB. This results in excellent EM and IR bi-stealth performance through the effective wideband microwave absorption of graphene/Fe3O4 component and the thermal buffer of PEG. This study offers a new strategy for the design and development of high-performance and lightweight EM–IR bi-stealth materials to meet the requirement of stealth and camouflage applications in military equipment and defense engineering. Full article
(This article belongs to the Special Issue Functional Phase Change Materials in Nanoscale)
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