Composites Part B: Engineering最新文献_第6页

Synthetic, automatically labelled training data for machine learning based X-ray CT image segmentation: Application to 3D-textile carbon fibre reinforced composites 基于机器学习的x射线CT图像分割的合成、自动标记训练数据：应用于3d纺织碳纤维增强复合材料

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-12 DOI: 10.1016/j.compositesb.2025.112656

Johan Friemann , Lars P. Mikkelsen , Carolyn Oddy , Martin Fagerström

{"title":"Synthetic, automatically labelled training data for machine learning based X-ray CT image segmentation: Application to 3D-textile carbon fibre reinforced composites","authors":"Johan Friemann , Lars P. Mikkelsen , Carolyn Oddy , Martin Fagerström","doi":"10.1016/j.compositesb.2025.112656","DOIUrl":"10.1016/j.compositesb.2025.112656","url":null,"abstract":"<div><div>Composite parts with 3D-textile reinforcement show promise in high-performance applications. For widespread use, accurate material characterisations are required. Characterisation of the textile architecture in the as-manufactured state may be performed with X-ray CT. Due to the similarity between the chemical composition of carbon fibres and epoxy based matrices, the contrast of X-ray CT scans is poor. Therefore, segmentation with classical methods is difficult or even impossible. Alternatively, machine learning based segmentation approaches may be used. One drawback of machine learning-based algorithms is the need for large datasets whose ground truth labellings require extensive manual labour. This can be circumvented by utilising automatically labelled synthetic X-ray CT data. In this work, a novel pipeline that generates synthetic CT image datasets, with automatically labelled ground truths, is developed. The pipeline is entirely based on free and/or open source software. It is demonstrated that segmentation model, trained on only such data, is able to accurately segment a real X-ray CT scan of a 3D-reinforced carbon fibre composite sample. A pixel-wise agreement of 88% is reached when compared to a manual segmentation. This implies potentially large time savings in segmentation tasks, which could accelerate characterisation of textile composites in their as-manufactured state.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112656"},"PeriodicalIF":12.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-explosive spalling UHPC mediated by synergistic regulation of thermal stress and vapor pressure 热应力和蒸汽压协同调节介导的非爆炸性剥落

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-12 DOI: 10.1016/j.compositesb.2025.112712

Zhen Han , Jijun Miao , Yafei Yu , Dongshuai Hou , Chao Liu , Xiaohan Zhang , Zongjin Li , Ditao Niu , Xinpeng Wang

{"title":"Non-explosive spalling UHPC mediated by synergistic regulation of thermal stress and vapor pressure","authors":"Zhen Han , Jijun Miao , Yafei Yu , Dongshuai Hou , Chao Liu , Xiaohan Zhang , Zongjin Li , Ditao Niu , Xinpeng Wang","doi":"10.1016/j.compositesb.2025.112712","DOIUrl":"10.1016/j.compositesb.2025.112712","url":null,"abstract":"<div><div>The explosive spalling of UHPC critically limits its application in fire-prone scenarios such as tunnels and nuclear facilities. Addressing the theoretical gap of thermal stress effect in existing studies, this research uncovers the synergistic damage mechanism of thermal stress and vapor pressure through experiments and thermo-mechanical coupled modeling. This research leverages polyethylene fiber (PEF) phase transitions to concurrently alleviate vapor pressure and thermal stress. A 12-min temperature plateau (the cross-section temperature stabilized at 155 ± 2 °C) suggest that PEF has a beneficial effect on thermal stress. Meanwhile, the melting and vaporization of PEF introduce extra pore channels with total porosity of 5.89 % at 400 °C for vapor pressure dissipation. Consequently, PEF-modified UHPC eliminates explosive spalling at 1000 °C, while the compressive strengths are maintained at 98.3 MPa and 36.0 MPa under 400 °C and 800 °C, respectively. Moreover, a spherical pore theory inspired model has been established to quantitatively validate that the synergistic regulation, where the results reveal that thermal stress and vapor pressure contribute 43.6 % and 56.4 % to the explosive spalling. This research proposes a novel approach to eliminate the explosive spalling, achieving theoretical breakthroughs for the fire-safe design of UHPC.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112712"},"PeriodicalIF":12.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive manufacturing of continuous carbon fiber reinforced two-component thermosetting epoxy resin E−20/E−51 composites 连续碳纤维增强双组份热固性环氧树脂E−20/E−51复合材料的增材制造

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-11 DOI: 10.1016/j.compositesb.2025.112704

Jiayun Ma , Lei Yang , Wenbo Wang , Zhanpeng Pi , Zhihao Wang , Boxue Chen , Chunze Yan , Yusheng Shi

{"title":"Additive manufacturing of continuous carbon fiber reinforced two-component thermosetting epoxy resin E−20/E−51 composites","authors":"Jiayun Ma , Lei Yang , Wenbo Wang , Zhanpeng Pi , Zhihao Wang , Boxue Chen , Chunze Yan , Yusheng Shi","doi":"10.1016/j.compositesb.2025.112704","DOIUrl":"10.1016/j.compositesb.2025.112704","url":null,"abstract":"<div><div>Additive manufacturing of continuous carbon fiber reinforced thermosetting epoxy resin composites has been widely investigated due to their lightweight properties and structural customizability. However, the adoption of a single solid epoxy resin usually results in poor prepreg impregnation and low mechanical strength, thereby limiting its further application. In this work, epoxy resin E−51 is introduced as a secondary component and blended with solid resin E−20 in different ratios as a resin matrix for prepregs is used to solve the problem of high viscosity and low flexural strength of a single resin. The results show that the viscosity of two-component epoxy resin was reduced by 25.7 %–56.7 % compared to pure E−20 at specific processing temperatures. Furthermore, a reasonable curing process parameters of 170 °C for 2h was determined based on the Kissinger and Crane methods. Additionally, the optimal printing parameters of 1.0 mm for hatch spacing and 0.5 mm for layer thickness were gained for the Fused Filament Fabrication (FFF), and the flexural strength and flexural modulus of the printed two-component resin specimens are 941.55 MPa and 64.38 GPa, respectively, which are 43.64 % and 14.88 % higher than those of pure E−20 specimens. Finally, it was demonstrated that the addition of epoxy E−51 improved fiber impregnation and increased crosslink density. This work provides an efficient method and guidance to improve the mechanical properties of FFF printed continuous fiber reinforced thermosetting epoxy resins, which is expected to further broaden their potential applications in the aerospace and defense industries.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112704"},"PeriodicalIF":12.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computational modeling of low-velocity impact response in long discontinuous fiber composite with statistical validation 长不连续纤维复合材料低速冲击响应的计算模型及统计验证

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-11 DOI: 10.1016/j.compositesb.2025.112708

Marco Didonè , Rachel Van Lear , David C. Stenning , David Jack , Oleksandr G. Kravchenko , Sergii G. Kravchenko

{"title":"Computational modeling of low-velocity impact response in long discontinuous fiber composite with statistical validation","authors":"Marco Didonè , Rachel Van Lear , David C. Stenning , David Jack , Oleksandr G. Kravchenko , Sergii G. Kravchenko","doi":"10.1016/j.compositesb.2025.112708","DOIUrl":"10.1016/j.compositesb.2025.112708","url":null,"abstract":"<div><div>This study investigates the low-velocity impact (LVI) response of prepreg platelet molded composites (PPMC) with a stochastic meso-structure using finite element analysis (FEA) and an innovative approach for statistical validation. A finite element model was developed to simulate the dynamic response and progressive damage mechanisms in PPMC plates, incorporating meso-scale variability arising from random platelet orientation and arrangement. Functional analysis of variance (fANOVA) was employed as a novel method for statistically validating stochastic FEA results by comparing simulated and experimental responses. High-resolution imaging via X-ray computed tomography (μCT) and ultrasonic testing (UT) provided further validation by characterizing the spatial distribution and morphology of damage, including intra-platelet failure and inter-platelet delamination. The findings highlight the dominant role of inter-platelet delamination in energy dissipation and provide quantitative insights into the damage evolution process. This work provides a validated framework for modeling and analyzing PPMC impact behavior, offering insights for the design and optimization of discontinuous fiber composite systems.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112708"},"PeriodicalIF":12.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Upcycling red mud into high-strength high-ductility Engineered Geopolymer Composites (EGC): Toward superior performance and sustainability 将赤泥升级为高强度、高延展性工程地聚合物复合材料（EGC）：迈向卓越的性能和可持续性

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-11 DOI: 10.1016/j.compositesb.2025.112713

Ling-Yu Xu , Jian-Cong Lao , Lan-Ping Qian , Dan-Dan Shi , Jirong Lan , Tian-Yu Xie , Dongshuai Hou , Bo-Tao Huang

{"title":"Upcycling red mud into high-strength high-ductility Engineered Geopolymer Composites (EGC): Toward superior performance and sustainability","authors":"Ling-Yu Xu , Jian-Cong Lao , Lan-Ping Qian , Dan-Dan Shi , Jirong Lan , Tian-Yu Xie , Dongshuai Hou , Bo-Tao Huang","doi":"10.1016/j.compositesb.2025.112713","DOIUrl":"10.1016/j.compositesb.2025.112713","url":null,"abstract":"<div><div>In this study, red mud (RM) was successfully adopted to produce high-strength high-ductility Engineered Geopolymer Composites (EGC). EGC with a high RM content of 50% achieved a compressive strength over 100 MPa and a tensile strain capacity over 5%. The influence of RM on the mechanical performances, reaction mechanisms, and environmental impacts of EGC was comprehensively investigated. Results revealed that the incorporation of RM would improve the reaction degree of precursors, densify the microstructures, and enhance the compressive strengths. Although RM incorporation would to some extent impair the tensile performances of EGC, the crack width could be effectively narrowed under a high RM content of 50%. Finally, the excellent sustainability and market potential of RM-incorporated EGC were demonstrated from environmental and cost analyses. The findings could help promote the RM upcycling technology and facilitate the development and engineering applications of this novel geopolymer composite for sustainable construction.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112713"},"PeriodicalIF":12.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoparticle stabilized carbon dioxide foam: Improving hydration, carbonation and pore structure of foamed concrete 纳米颗粒稳定二氧化碳泡沫：改善泡沫混凝土的水化、碳化和孔隙结构

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-10 DOI: 10.1016/j.compositesb.2025.112714

Linbo Jiang , Zhi Wang , Hongzhi Xu , Zheng Wang , Jinghang Niu , Yuan Wang , Qi Yang , Jihui Qin

{"title":"Nanoparticle stabilized carbon dioxide foam: Improving hydration, carbonation and pore structure of foamed concrete","authors":"Linbo Jiang , Zhi Wang , Hongzhi Xu , Zheng Wang , Jinghang Niu , Yuan Wang , Qi Yang , Jihui Qin","doi":"10.1016/j.compositesb.2025.112714","DOIUrl":"10.1016/j.compositesb.2025.112714","url":null,"abstract":"<div><div>This study employed nano-silica (NS) and nano-calcium carbonate (NC) to stabilize CO<sub>2</sub> foam, which was subsequently employed in the production of CO<sub>2</sub> foamed concrete (CFC). The impacts of varying dosages of NS and NC on the characteristics of CO<sub>2</sub> foam and the properties and microstructure of CFC were investigated. The incorporation of NS and NC significantly enhanced the stability of CO<sub>2</sub> foam, with optimal foam stability achieved at content of 1 % for NS and 1.5 % for NC, respectively. The fluidity of fresh CFC paste exhibited a gradual decline as the content of nanoparticles increases. In addition, when the foam was optimal stable, the strength of CFC can be increased by 36 % and CO<sub>2</sub> uptake by 1.8 % on average. NS owing to its crystal nucleus effect and volcanic ash effect, concurrently facilitated both hydration and carbonation processes. This dual action effectively filled the defects present on the pore walls and enhanced the strength. Whereas NC acted as a nucleation site effect for calcium carbonate formation, further advancing the carbonation process and reinforcing the strength of the pore walls. Above effects to varying degrees significantly reduced the pore throat radius, length and the number of interconnected pores of CFC, and optimized the pore size distribution, uniformity and sphericity, thereby reducing the water absorption rate of CFC and enhancing its mechanical properties.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112714"},"PeriodicalIF":12.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on a novel annealing strategy for AFP of thermoplastic composites 热塑性复合材料AFP退火新策略研究

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-10 DOI: 10.1016/j.compositesb.2025.112706

Hui Li , Yinhui Li , Zhanchun Chen , Jianglin Liu , Runtian Zhao , Xiaodong Zhao , Jianguo Liang

{"title":"Research on a novel annealing strategy for AFP of thermoplastic composites","authors":"Hui Li , Yinhui Li , Zhanchun Chen , Jianglin Liu , Runtian Zhao , Xiaodong Zhao , Jianguo Liang","doi":"10.1016/j.compositesb.2025.112706","DOIUrl":"10.1016/j.compositesb.2025.112706","url":null,"abstract":"<div><div>In laser-assisted in-situ consolidation technology, the products are subjected to highly rapid cooling due to the relatively narrow heating zone and fast layup speed, resulting in reduced crystallinity, insufficient interlayer bonding, and warpage deformation. This study developed a line-focused infrared heater (LFIH) that is easy to integrate with automated fiber placement (AFP) equipment and validated its effectiveness in annealing thermoplastic composites (TPCs). A comprehensive mathematical model was developed to correlate the structural characteristics of the LFIH with the heat flow field, coupling it with a 3D finite element model utilizing the DFLUX subroutine to predict the evolution of the temperature field distribution. The results indicate that the LFIH effectively achieves strong focusing characteristics, fulfilling the requirements for the annealing treatment of TPCs. Furthermore, the simulation and experimental results exhibit close agreement, with peak annealing temperature discrepancies among layers maintained within 7 %. After annealing treatment with the LFIH, the crystallinity and interlayer properties of the layup products were improved, while the porosity and warpage deformation of the layup products were reduced. This novel, high-energy-density annealing strategy effectively enhances the quality of laminates.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112706"},"PeriodicalIF":12.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic dual-network hydrogel microspheres for enhanced nucleus pulposus regeneration via extracellular matrix mimicry 通过细胞外基质模拟增强髓核再生的动态双网络水凝胶微球

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-10 DOI: 10.1016/j.compositesb.2025.112715

Xin Tian , Chenyang Jin , Yan Miao , Hao Liu , Xi Chen , Wenge Ding , Fan He , Yong Xu

{"title":"Dynamic dual-network hydrogel microspheres for enhanced nucleus pulposus regeneration via extracellular matrix mimicry","authors":"Xin Tian , Chenyang Jin , Yan Miao , Hao Liu , Xi Chen , Wenge Ding , Fan He , Yong Xu","doi":"10.1016/j.compositesb.2025.112715","DOIUrl":"10.1016/j.compositesb.2025.112715","url":null,"abstract":"<div><div>The degeneration of intervertebral discs (IVD) remains a significant challenge in regenerative medicine. This study introduces novel hydrogel microspheres (GelMA-FCD-GA) designed to mimic the native extracellular matrix (ECM) of nucleus pulposus cells (NPCs). These microspheres integrate Gelatin Methacrylate (GelMA) with Fucoidan (FCD) and are further modified with aldehyde groups (GA) to establish a dynamic viscoelastic scaffold capable of transducing mechanical signals and promoting cellular functions. In vitro, GelMA-FCD-GA microspheres enhanced mitochondrial function and antioxidant capacity of NPCs, with increased expression of respiratory chain factors and reduced reactive oxygen species. In vivo, the transplantation of NPC-laden GelMA-FCD-GA microspheres into Rat caudal IVDs demonstrated significant regenerative effects, as evidenced by improved MRI signals, restored disc height, and favorable histological outcomes compared to controls. This innovative approach presents a significant advancement in IVDD treatment, combining the mechanical benefits of bioactive materials with the bioactive properties of fucoidan. The dual-network design supports cell adhesion and growth and dynamically adapts to the physiological environment, offering a robust platform for regenerative medicine applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112715"},"PeriodicalIF":12.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure modes of CF-PEEK overmoulded onto unidirectionally reinforced CF-LM-PAEK: Multi-scale pull-off testing and microscopy investigation of rib stiffened geometries 单向增强CF-LM-PAEK上复模CF-PEEK的失效模式：肋增强几何形状的多尺度拉脱试验和显微研究

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-09 DOI: 10.1016/j.compositesb.2025.112700

Andrew J. Parsons , Jesús Molinar-Díaz , Anatoly Koptelov , Will Darby , Helia Hooshmand , Francisco U. Hernandez Ledezma , Ole T. Thomsen , Jonathan P.H. Belnoue , Lee T. Harper

{"title":"Failure modes of CF-PEEK overmoulded onto unidirectionally reinforced CF-LM-PAEK: Multi-scale pull-off testing and microscopy investigation of rib stiffened geometries","authors":"Andrew J. Parsons , Jesús Molinar-Díaz , Anatoly Koptelov , Will Darby , Helia Hooshmand , Francisco U. Hernandez Ledezma , Ole T. Thomsen , Jonathan P.H. Belnoue , Lee T. Harper","doi":"10.1016/j.compositesb.2025.112700","DOIUrl":"10.1016/j.compositesb.2025.112700","url":null,"abstract":"<div><div>Overmoulding is a manufacturing technique used to create structural composite components with complex shapes, combining regions of continuous and short fibre reinforcement. It is possible to produce structural parts at high rates, whilst minimising materials costs. The interface between the regions of continuous and short fibre material is key to the performance of the structure. This work investigates pull-off testing as a direct method for measuring rib-on-plate bonding strength, a common structural feature of overmoulding. Different rib joint types (Butt, Radius, Step) and specimen sizes (1, 5, 20 mm) are used to investigate the fidelity of the test, when applied to unidirectionally-reinforced low melting point (LM)-PAEK bonded to PEEK ribs.The main findings are that the Butt joint appears to provide the most reliable pull-off test data in terms of determining the interface strength. While the Radius and Step configurations improve local strain and moulding consistency respectively, they tend to promote failure through the ply structure rather than the interface. Recommendations are made in relation to specimen length, ply structure and allowable deformation during manufacture.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112700"},"PeriodicalIF":12.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ferromagnetic self-assembled heterostructures of Co/Co3O4 embedded N-doped carbon network for outstanding energy storage performance under moderate magnetic fields Co/Co3O4嵌入n掺杂碳网络的铁磁自组装异质结构在中等磁场下具有出色的储能性能

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-09 DOI: 10.1016/j.compositesb.2025.112705

Sandya Rani Mangishetti , Gwan Hyeon Park , Junbeom Maeng , Tanwir Ansari , Jungseub Ha , Sanghwa Jeong , Sehun Choi , Yeji Park , Nayeon Kim , Won Bae Kim

{"title":"Ferromagnetic self-assembled heterostructures of Co/Co3O4 embedded N-doped carbon network for outstanding energy storage performance under moderate magnetic fields","authors":"Sandya Rani Mangishetti , Gwan Hyeon Park , Junbeom Maeng , Tanwir Ansari , Jungseub Ha , Sanghwa Jeong , Sehun Choi , Yeji Park , Nayeon Kim , Won Bae Kim","doi":"10.1016/j.compositesb.2025.112705","DOIUrl":"10.1016/j.compositesb.2025.112705","url":null,"abstract":"<div><div>This study aims to create an efficient anode hybrid electrode material for the assembly of asymmetric supercapacitor (ASC) and to further enhance electrochemical performance under moderate external magnetic fields (MFs), addressing the challenges of low energy density in supercapacitor devices while maintaining cycle life and power density. The well-integrated hybrid heterostructures, which embed Co/Co<sub>3</sub>O<sub>4</sub> nanoparticles in nitrogen (N)-doped carbon shells and sheets (Co@N–CNS), demonstrate exceptional physical and electrochemical properties. At a current density of 1.5 A g<sup>−1</sup>, it exhibits a specific capacitance of 1579.8 F g<sup>−1</sup> in a half-cell configuration. Furthermore, the gravimetric capacitance increases to 2429 F g<sup>−1</sup> under a MF of 6 mT. The enhanced energy storage performance is attributed to the reduced charge transfer resistance (R<sub>ct</sub>) and solution resistance (R<sub>s</sub>) resulting from magnetoresistance and magnetic hydrodynamics (MHD) effects. The asymmetric supercapacitor exhibits an outstanding energy density of 221.4 W h kg<sup>−1</sup> and power density of 1.58 kW kg<sup>−1</sup> at 1.5 A g<sup>−1</sup> under a 6 mT MF strengths. It also demonstrates excellent cycling stability (96.2 %) after 10,000 cycles under the same field strength. These results outperform most cobalt-based hybrid electrode materials reported to date. This is the first investigation on a ferromagnetic hybrid electrode material for supercapacitors that demonstrates superior electrochemical performance under both zero and moderate MFs.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112705"},"PeriodicalIF":12.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144290453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0