Jianwei Sun, Shuqing Guo^*, Shikai Li

Energy Engineering, Vol.122, No.9, pp. 3625-3646, 2025, DOI:10.32604/ee.2025.067159 - 26 August 2025

Abstract Since lithium-ion batteries have been put into use, the recession of work cycle efficiency at low temperatures has received widespread attention. In this paper, we investigated the effect of low temperature (−5°C, 0°C, 5°C) environments on the performance of lithium-ion batteries, which are well-known for their excellent discharge performance, cycle life, and safety. However, lithium-ion batteries exhibit significant capacity degradation at low temperatures, especially at 0°C, losing availability after only 10 cycles. Therefore, we conducted cycle degradation tests at 1C discharge and 100% charge-discharge conditions. In this paper, we analyzed the surface morphology, structure, and More > Graphic Abstract

F. L. Kong^a,b, L. Zhang^c, W. J. Zhao^d, D. S. Zheng^b, T. J. Sui^b, G. L. Zhu^a, C. A. Guo^a,*

Chalcogenide Letters, Vol.21, No.8, pp. 665-674, 2024, DOI:10.15251/CL.2024.218.665

Abstract A Ni/C-MoS₂ coating was electrospark deposited by using an electrode made of sinered Ni-C-MoS₂ composite on a CrNi3MoVA steel substrate, and its nano-mechanical properties and tribological properties were obtained by utilizing nano-indenter and friction-abrasion testing machine. The results showed that the phase constitution of the as-deposited Ni/C-MoS₂ coating mainly includes graphite, MoS₂, γ-Ni, MoO₂, NixS and MoC. Compared with the CrNi3MoVA steel and Ni/MoS2 coating, the Ni/C-MoS₂ coating exhibits better tribological properties due to the matrix strengthened by MoO₂ and MoC, and the synergistic lubrication effect of graphite and MoS₂ in the Ni/C-MoS₂ coating. More >

Ziyang Qiu^1,2, Hanjun Yang^1,2,*

Journal of Polymer Materials, Vol.41, No.4, pp. 329-340, 2024, DOI:10.32604/jpm.2024.057953 - 16 December 2024

Abstract Hydrogels are emerging as promising candidates for solar-driven interfacial evaporation in water purification. Our research introduces a graphite polyvinyl alcohol hydrogel (GPVA) evaporator designed as a photothermal conversion interface, showcasing high performance with an evaporation rate of 2.43 kg m⁻² h⁻¹ and an efficiency of 91.9% under solar irradiance of 1 kW m⁻². The layered graphite structure of the GPVA hydrogel enhances its ion and dye adsorption capabilities, effectively removing fluoride, iodine, and other contaminants from water. In cyclic evaporation tests, the GPVA hydrogel evaporator demonstrated remarkable stability and long-term durability, maintaining an evaporation rate of 2.43 More >

Sihui Tong¹, Boyuan Cao¹, Dongqing Tian², Qinwei Ma¹, Guangyan Liu^1,*, Li Shi², Libin Sun²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.010870

Abstract Graphite materials serve critical roles as moderators, reflectors and core structural components in high-temperature gas-cooled nuclear reactors. These materials may experience a variety of loads during the reactor operation, including thermal, radiation, fatigue and dynamic loads, potentially leading to crack initiation and propagation. Consequently, it is imperative to investigate the fracture properties of graphite materials. Currently, there exists a dearth of comprehensive studies on the fracture toughness of graphite materials with varying grain sizes, especially regarding dynamic fracture toughness. This study introduces a novel approach utilizing a digital-image-correlation-based virtual extensometer to analyze crack propagation in… More >

Wei Shi^1,2, Zhengyi Li¹, Xiaobing Xu¹, Yingshui Yu¹, Xiaofei Ding¹, Heng Ju^1,*

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.1, pp. 97-108, 2024, DOI:10.32604/fdmp.2023.029028 - 08 November 2023

Abstract Two-dimensional carbon/carbon (2D C/C) composites are a special class of carbon/carbon composites, generally obtained by combining resin-impregnated carbon fiber clothes, which are then cured and carbonized. This study deals with the preparation of a protective coating for these materials. This coating, based on graphite, was prepared by the slurry method. The effect of graphite and phenolic resin powders with different weight ratios was examined. The results have shown that the coating slurry can fill the pores and cracks of the composite surface, thereby densifying the surface layer of the material. With the increase of the… More >

HADIMANI SHIVAKUMAR¹, GURUMURTHY G. D.¹, BOMMEGOWDA K. B.², S. PARAMESHWARA³

Journal of Polymer Materials, Vol.40, No.1-2, pp. 93-103, 2023, DOI:10.32381/JPM.2023.40.1-2.8

Abstract Polymer composites are increasing in demand in energy storage applications including in the electronic as well as electrical industries due to the ease of processing of these materials with associated advantages like light weight, corrosion resistance, and high mechanical strength. In this investigation, efforts are made to enhance the charging and discharging properties of epoxy/carbon fabric composite by the addition of graphene nanoplatelets (GNPs) into the epoxy/ carbon matrix. The performance of the composites with graphene platelets of 0.5 to 5 wt. % in epoxy were characterized and 1wt.% percolation threshold was observed poor performance… More >

Gustavo von Zeska de França, Roberto Luís de Assumpção, Marco Antonio Luersen^*, Carlos Henrique da Silva

CMC-Computers, Materials & Continua, Vol.77, No.2, pp. 1411-1424, 2023, DOI:10.32604/cmc.2023.043811 - 29 November 2023

Abstract Austempered ductile iron (ADI) is composed of an ausferritic matrix with graphite nodules and has a wide range of applications because of its high mechanical strength, fatigue resistance, and wear resistance compared to other cast irons. The amount and size of the nodules can be controlled by the chemical composition and austenitizing temperature. As the nodules have lower stiffness than the matrix and can act as stress concentrators, they influence crack propagation. However, the crack propagation mechanism in ADI is not yet fully understood. In this study, we describe a numerical investigation of crack propagation… More >

Liang Zhang^1,*, Zigang He¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.2, pp. 1-1, 2023, DOI:10.32604/icces.2023.09713

Abstract The different elastic properties of tension and compression are obvious in many engineering materials, especially new materials. Materials with this characteristic, such as graphite, ceramics, and composite materials, are called bi-modulus materials. Their mechanical properties such as Young’s modulus have randomness in tension and compression due to different porosity, microstructure, etc. To calibrate the mechanical properties of bi-modulus materials by bridging FEM simulation results and scarce experimental data, the paper presents a data-fusion computational method. The FEM simulation is implemented based on Parametric Variational Principle (PVP), while the experimental result is obtained by Digital Image… More >

Minghua Cao^1,*, Konstantinos P. Baxevanakis¹, Vadim V. Silberschmidt¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.09086

Abstract Compacted graphite iron (CGI) was attractive as an important material for the industry since its introduction in the last century. Thanks to its high strength, great wear resistance and thermal conductivity, CGI became extensively applied in the automotive industry as engine parts: brake drums, cylinder heads and exhaust manifolds. As a metal-matrix composite, CGI contains two microstructural phases: graphite inclusions and a metallic matrix. The main fracture mechanism of CGI under high-temperature service conditions at macroscale is linked to graphite-matrix (interfacial) debonding, formation of microcracks and their networks, and final failure of the material at… More >

Heru Suryanto^1,2,*, Bili Darnanto Susilo³, Jibril Maulana³, Aminnudin³, Uun Yanuhar⁴, Surjani Wonorahardjo^2,5, Husni Wahyu Wijaya^2,5, Abu Saad Ansari⁶

Journal of Renewable Materials, Vol.10, No.9, pp. 2455-2465, 2022, DOI:10.32604/jrm.2022.020478 - 30 May 2022

Abstract Waste is the main problem for the environment. Handling waste for various useful applications has a benefit for the future. This work has been studied for handling pineapple peel waste to make composite film bacterial cellulose nanocomposite membrane (BCNM) with addition graphite nanoplatelet (GNP). The concentration of GNP in the membrane influence the membrane properties. The bacterial cellulose (BC) pellicle was synthesized by using media from pineapple peel waste extract. BC pellicle is cleaned with water and NaOH solution to be free from impactors. BCNM is synthesized through the mechanical disintegration stage. The results of… More > Graphic Abstract