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Novel Materials for Green Energy Conversion and Storage

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: closed (10 August 2024) | Viewed by 567

Special Issue Editor


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Guest Editor
Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
Interests: perovskite materials; optoelectronics; solar cells

Special Issue Information

Dear Colleagues,

Emerging materials for energy conversion and storage offers a comprehensive overview of the latest advancements in materials for energy conversion technologies, including solar cells and fuel cells, as well as energy storage technologies such as batteries, supercapacitors, and hydrogen storage systems. This Special Issue primarily focuses on innovative materials that play a pivotal role in the conversion and storage of renewable energy sources. It delves into advancements that significantly improve the efficiency, durability, and cost-effectiveness of these energy sources. The aim is to develop novel materials that offer improved performance, durability, and cost-effectiveness, thereby making green energy solutions more viable and accessible. This Special Issue welcomes submissions of original research on photovoltaic materials for solar energy, wind turbine materials for wind energy, and electrochemical materials for hydrogen production and storage. Additionally, it explores the sustainability aspect of these materials, emphasizing how they can contribute to a more sustainable and environmentally friendly future of energy. By highlighting these novel materials, this Special Issue aims to provide insights into overcoming current barriers in green energy technologies and fostering further innovation in this field.

Dr. Guang Yang
Guest Editor

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Keywords

  • green energy
  • energy conversion
  • energy storage
  • photovoltaic materials
  • solar cells
  • hydrogen energy
  • sustainability
  • battery
  • functional materials

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Published Papers (1 paper)

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Research

18 pages, 4733 KiB  
Article
A Novel Concept of Nano-Enhanced Phase Change Material
by Răzvan Calotă, Octavian Pop, Florin Bode, Cristiana Croitoru, Andrada Serafim, Alina Bărbulescu, Celina Damian and Lucia Tefas
Materials 2024, 17(17), 4268; https://doi.org/10.3390/ma17174268 - 29 Aug 2024
Viewed by 337
Abstract
In the actual context of growing concerns over sustainability and energy efficiency, Phase Change Materials (PCMs) have gained attention as promising solutions for enhancing energy storage and release efficiency. On another hand, materials based on graphene oxide (GO) have proven antibacterial activity, biocompatibility, [...] Read more.
In the actual context of growing concerns over sustainability and energy efficiency, Phase Change Materials (PCMs) have gained attention as promising solutions for enhancing energy storage and release efficiency. On another hand, materials based on graphene oxide (GO) have proven antibacterial activity, biocompatibility, efficiency in microbial growth inhibition, and pollutant removal. Integrating nanoparticles into PCMs and creating Nano-Enhanced Phase Change Materials (NEPCMs) have opened new horizons for optimizing the performance of these systems and sustainable development. The key objective of this work is to gain insight into NECPMs, which are used in solar wall systems to enhance solar energy storage. Paraffin RT31 was mixed with Cu nanoparticles, graphene oxide (GO), and Cu-decorated GO (Cu@GO) at loading ratios ranging from 1% to 4% (w/w nanoparticles with respect to RT31). The compositions were characterized through Differential Scanning Calorimetry (DSC) and rheology tests. The decoration of the carbon-based nanoparticles was performed using the ultrasonication procedure, and the decoration efficiency was confirmed through X-ray Photoelectron Spectroscopy (XPS). The rheologic measurements were performed to correlate the flow behavior of the NEPCM with their composition at various temperatures. The study methodically investigated these composites’ latent heat values, phase change peak temperatures, and solidification phase change temperatures. Compared to pure paraffin, the solidification of the formulations obtained using Cu@GO exhibits the largest increase in latent heat, with a 12.07% growth at a concentration of 2%. Additionally, at a 4% concentration of NEPCM, the largest increase in thermal conductivity was attained, namely 12.5%. Full article
(This article belongs to the Special Issue Novel Materials for Green Energy Conversion and Storage)
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