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Study on Chemical Heat Storage Materials and Heat Storage System

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Special Issue Editors

Prof. Dr. Qinpei Wu

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Guest Editor

School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
Interests: thermal energy storage; organic synthesis; medicinal chemistry

Prof. Dr. Xianglei Liu

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Guest Editor

School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 120016, China
Interests: thermal energy storage; thermal management; solar fuel
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Thermal storage with molten salts has been used in solar thermal power for decades. Recently, chemical-heat storage (CHS) has attracted increasing attention. This significant interest can be attributed to the enormous demand for renewable energy and the specific advantages of this technology, which include long-term storage with negligible losses, upgrading thermal energy, and a high density of energy.

CHS conducts heat storage and release via a reversible thermochemical reaction. This concerns materials (chemicals) and thermodynamics and kinetics of the reaction. The low kinetics of this process is one of the main obstacles for practical CHS. To enhance CHS efficiency, investigations include materials, reactors, catalysis, chemical process, and heat exchangers.

The main goal of the Special Issue is to highlight original research articles and review papers concerning CHS materials, CHS system, and thermal-energy managements.

Therefore, it is my pleasure to invite you to submit a manuscript focusing on CHS in the following subjects:

Chemical-heat storage materials;
Chemical-heat storage processes;
Hybrid chemical-heat storage;
Thermal storage management;
Solar chemical-heat storage;
Catalysis;
Reactors.

Prof. Dr. Qinpei Wu
Prof. Dr. Xianglei Liu
Guest Editors

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. Materials 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 2600 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

thermochemical heat storage
solar thermochemical
energy management
thermal energy storage
chemical process
catalysis
reactor

Published Papers (2 papers)

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Research

11 pages, 2560 KiB

Open AccessArticle

Paraffin-Multilayer Graphene Composite for Thermal Management in Electronics

by Adriana Elena Balan, Ali AL-Sharea, Esmaeil Jalali Lavasani, Eugenia Tanasa, Sanda Voinea, Bogdan Dobrica and Ioan Stamatin

Materials 2023, 16(6), 2310; https://doi.org/10.3390/ma16062310 - 13 Mar 2023

Cited by 2 | Viewed by 1358

Abstract

Multilayer graphene–paraffin composites with different contents of graphene (0–10 wt.%) were prepared using an ultra-high shear mixer. The aim is to improve the heat transfer in paraffin wax, which will lead to more-efficient thermal buffering in electronic applications. The multi-layer graphenes obtained by supercritical fluid exfoliation of graphite in alcohol were investigated by Raman spectroscopy, scanning electron microscopy and atomic force microscopy. Interesting morphological features were found to be related to the intercalation of paraffins between the multilayer graphene flakes. Thermal properties were also investigated in terms of phase change transition temperatures, latent heat by differential scanning calorimetry and thermal conductivity. It was found that the addition of graphene resulted in a slight decrease in energy storage capacity but a 150% improvement in thermal conductivity at the highest graphene loading level. This phase-change material is then used as a thermal heat sink for an embedded electronic processor. The temperature of the processor during the execution of a pre-defined programme was used as a performance indicator. The use of materials with multilayer graphene contents of more than 5 wt.% was found to reduce the processor operating temperature by up to 20%. This indicates that the use of such composite materials can significantly improve the performance of processors. Full article

(This article belongs to the Special Issue Study on Chemical Heat Storage Materials and Heat Storage System)

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18 pages, 4370 KiB

Open AccessArticle

Fabrication of 3D HierarchicalSphericalHoneycomb-Like Nd₂O₃/Co₃O₄/Graphene/Nickel Foam Composite Electrode Material for High-Performance Supercapacitors

by Huihui Liang, Shasha Wang, Shixiang Lu, Wenguo Xu and Min Zhou

Materials 2023, 16(4), 1694; https://doi.org/10.3390/ma16041694 - 17 Feb 2023

Cited by 3 | Viewed by 1375

Abstract

A 3D hierarchical spherical honeycomb-like composite electrode materialof neodymium oxide (Nd₂O₃), cobalt tetraoxide (Co₃O₄), and reduced graphene oxide (rGO) on nickel foam (named as Nd₂O₃/Co₃O₄/rGO/NF) were successfully fabricated by combining the hydrothermal synthesis method and the annealing process. Nickel foam with a three-dimensional spatial structure was used as the growth substrate without the use of any adhesives. The Nd₂O₃/Co₃O₄/rGO/NF composite has outstanding electrochemical performance and can be used directly as an electrode material for supercapacitors (SCs). By taking advantage of the large specific surface area of the electrode material, it effectively slows down the volume expansion of the active material caused by repeated charging and discharging processes, improves the electrode performance in terms of electrical conductivity, and significantly shortens the electron and ion transport paths. At a 1 A/g current density, the specific capacitance reaches a maximum value of 3359.6 F/g. A specific capacitance of 440.4 F/g with a current density of 0.5A/g is still possible from the built symmetric SCs. The capacitance retention rate is still 95.7% after 30,000 cycles of testing at a high current density of 10 A/g, and the energy density is 88.1 Wh/kg at a power density of 300 W/kg. The outcomes of the experiment demonstrate the significant potential and opportunity for this composite material to be used as an electrode material for SCs. Full article

(This article belongs to the Special Issue Study on Chemical Heat Storage Materials and Heat Storage System)

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