Invited for this month's cover are the groups of Prof. Hyun Deog Yoo and Prof. Jin Kyoon Park at Pusan National University, and Prof. Ji Heon Ryu at Tech University of Korea (Republic of Korea). The cover image illustrates the generation of tailor-made pores by the electrochemical activation of expanded graphite for a magnesium-organocation hybrid battery. The Research Article itself is available at 10.1002/cssc.202300035.
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http://dx.doi.org/10.1002/cssc.202300691 | DOI Listing |
Materials (Basel)
January 2025
Department of Mechanical Engineering, Samsun University, 55420 Samsun, Turkey.
This study addresses the thermal management challenge in battery systems by enhancing phase change material composites with Ni-P and Ni-P-Cu coatings on phase change material/expanded graphite structures. Traditional phase change materials are limited by low thermal conductivity and mechanical stability, which restricts their effectiveness in high-demand applications. Unlike previous studies, this work integrates Ni-P and Ni-P-Cu coatings to significantly improve both the thermal conductivity and mechanical strength of phase change material/expanded graphite composites, filling a crucial gap in battery thermal management solutions.
View Article and Find Full Text PDFMaterials (Basel)
January 2025
School of Energy and Automotive Engineering, Shunde Polytechnic, Foshan 528300, China.
A novel organic-inorganic eutectic phase change material (PCM) based on sodium acetate trihydrate (SAT) and polyethylene glycol (PEG) was developed to meet the needs of heat recovery and building heating. Three kinds of PEG with different molecular weights were selected to form organic-inorganic eutectic PCM with SAT. The thermal properties of three series of SAT-PEG eutectic PCM were compared based on DSC results, focusing on the impact of PEG addition on the phase change temperature and enthalpy of SAT, as well as the melting uniformity.
View Article and Find Full Text PDFMicroscopy (Oxf)
December 2024
Green Innovation Center, Green Transformation Division, Panasonic Holdings Corporation, 3-1-1 Yagumo-Nakamachi, Moriguchi City, Osaka 570-8501, Japan.
The direct observation of the morphological changes in silicon-based negative electrode (Si-based negative electrode) materials during battery charging and discharging is useful for handling such materials and in electrode plate design. We developed an operando scanning electron microscopy (operando SEM) technique to quantitatively evaluate the expansion and contraction of Si-based negative electrode materials. A small all-solid-state lithium-ion battery was charged and discharged, and the expansion/contraction of particles while harnessing capacity was observed using SEM.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Center for Membrane Separation and Water Science & Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
Heatable super hydrophobic polyurethane (PU) sponges (S-GNS/CNT/PVA@PU) containing three-dimensional (3D) carbon nano-networks (CNNs) coatings made from two-dimensional (2D) expanded graphite nano-sheets (GNS) bridged by one-dimensional (1D) carbon nano-tubes (CNT) were constructed using polyvinyl alcohol (PVA) as binder, in which light and/or electric energy could be rapidly converted into heat to reduce the viscosity of spilled heavy oils, resulting in greatly increased oil. Their heavy oil recovery rate could reach 792 kg/(m·h) under combined light and Joule heating of 1 sun and 5 V. Surface heat dissipating coefficient Ks, heat dissipating index n, and surface heat absorption capacity Cs were studied relating to sizes and shapes of surface heating fields under varied heating modes.
View Article and Find Full Text PDFEnviron Technol
January 2025
Department of Materials Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
This study synthesises expanded graphite (EG) from graphitised carbon from waste polyethylene terephthalate (PET) bottles. The adsorbent material was characterised using FTIR, XRF, XRD, SEM, Raman Spectroscopy, and BET surface area analysis. The synthesised EG defluorinated wastewater, utilising response surface methodology (RSM) for experimental design and optimisation.
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