Diamond and Related Materials最新文献

{"title":"Machine learning-optimized terahertz ultra-wideband tunable metamaterial absorber","authors":"Shilei Tian ,&nbsp;Cheng Chen ,&nbsp;Jiaxuan Xue ,&nbsp;Zhihao Li ,&nbsp;Jixin Wang ,&nbsp;Johan Stien","doi":"10.1016/j.diamond.2025.112793","DOIUrl":"10.1016/j.diamond.2025.112793","url":null,"abstract":"<div><div>Ultra-wideband absorbers are essential devices capable of efficiently absorbing electromagnetic waves over a broad frequency range, with extensive applications in radar detection, wireless communication, and stealth technology. Their primary advantage lies in the ability to simultaneously cover both low and high-frequency absorption bands, thereby significantly enhancing stealth performance and anti-interference capabilities. However, the design of ultra-wideband absorbers still faces two major technical challenges: first, achieving stable absorption performance across an ultra-wide frequency range; and second, further improving absorption efficiency while maintaining broadband stability to meet the demands of various application scenarios. In this study, we propose a terahertz metamaterial absorber based on a three-layer composite structure incorporating patterned graphene sheets. This structure enables dynamic tunability between absorption and reflection states. To optimize the absorption performance, an innovative machine learning-based optimization strategy is introduced. Firstly, forwarding prediction is employed to quantify the optimization weights of different structural parameters, allowing for the selection of key tunable parameters. Subsequently, inverse prediction is utilized to determine the optimal structural configuration based on the target absorption performance. As a result, the proposed design achieves an absorption rate exceeding 90 % within the 2.28–4.68 THz frequency range, demonstrating significant improvements in absorption efficiency and tunability.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112793"},"PeriodicalIF":5.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Architecting 3D nitrogen-rich carbon microspheres: Hierarchical pore engineering for high-performance energy storage","authors":"Linli Wang ,&nbsp;Liya Zhang ,&nbsp;Bin Wang ,&nbsp;Saiwei Luan ,&nbsp;Chunjian Xue","doi":"10.1016/j.diamond.2025.112794","DOIUrl":"10.1016/j.diamond.2025.112794","url":null,"abstract":"<div><div>Porous carbon sphere materials are extensively studied as strong candidate materials for electrodes. However, finding a high synthesis yield and superior capacity porous carbon sphere remains challenging. Herein, the Nitrogen-enriched phenolic resin derived carbon microspheres with a microporous structure were synthesized by spray drying technique. The resulting N-CSs exhibit excellent high-rate capacity (647.4 mAh g⁻¹ at 1000 mA g⁻¹), and outstanding cycling stability (840.1 mAh g⁻¹ after 500 cycles at 500 mA g⁻¹). Exceptional cycling stability arises primarily from the defects and microporous structure generated by highly nitrogen doping (8.9 wt%), promoting higher Li⁺ adsorption capacity for improved energy storage. Additionally, in-situ Raman spectroscopy further indicates that the defects and microporous structure generated by highly nitrogen doping exhibit high reversibility, providing additional pseudo-capacitive capacity for Li⁺ ions. This work elucidates lithiation mechanisms in nitrogen-enriched carbon microspheres.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112794"},"PeriodicalIF":5.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ZnO-graphene nanohybrids for photocatalytic degradation of methylene blue dye","authors":"Mutcha Shanmukha Rao ,&nbsp;Yogesh Chaudhary ,&nbsp;Dhayanantha Prabu Jaihindh ,&nbsp;Yi-Feng Lin ,&nbsp;Benadict Rakesh ,&nbsp;Kamatchi Jothiramalingam Sankaran","doi":"10.1016/j.diamond.2025.112791","DOIUrl":"10.1016/j.diamond.2025.112791","url":null,"abstract":"<div><div>Addressing the escalating global crisis of water contamination by synthetic dyes, necessitates the advancement of efficient and sustainable photocatalytic materials. In this study, we report a simple and direct fabrication of ZnO-graphene (ZG) nanohybrids photocatalyst via a scalable photothermal approach, yielding a hierarchical architecture comprising vertically aligned ZnO nanoparticles uniformly anchored onto graphene layers. The engineered configuration imparts a high surface area, enhanced interfacial contact, and improved charge carrier dynamics, critical for efficient photocatalysis. Comprehensive microstructural and spectroscopic analyses confirm the successful integration of ZnO with graphene, revealing an improved optical bandgap of ~1.92 eV, which extends the light absorption spectrum into the visible region. Photocatalytic assessments reveal that the ZG nanohybrids achieve 93 % degradation of 5 ppm methylene blue (MB) under UV–visible light within 130 min, significantly outperforming pristine graphene. This increased activity is attributed to efficient electron-hole separation, broadened photoresponse, and the generation of reactive oxygen species, particularly hydroxyl radicals (•OH), as supported by photoluminescence and radical scavenger studies. The graphene framework facilitates rapid charge transport, while the ZnO nanoparticles contribute abundant active sites and enhance the surface area. Furthermore, the ZG photocatalyst demonstrates excellent cycling stability, maintaining performance over five consecutive degradation cycles with minimal loss. This work highlights the potential of ZG nanohybrids as a robust, cost-effective, and scalable photocatalytic platform for advanced environmental remediation, offering promising avenues for future wastewater treatment technologies.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112791"},"PeriodicalIF":5.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optically detected magnetic resonance and photoluminescence study of natural cryptocrystalline diamonds aggregates","authors":"Sergey V. Titkov ,&nbsp;Valentina V. Yakovleva ,&nbsp;Kirill V. Likhachev ,&nbsp;Marina V. Muzafarova ,&nbsp;Roman A. Babunts ,&nbsp;Pavel G. Baranov ,&nbsp;Maksimilian S. Nikolsky ,&nbsp;Nikolay S. Bortnikov","doi":"10.1016/j.diamond.2025.112789","DOIUrl":"10.1016/j.diamond.2025.112789","url":null,"abstract":"<div><div>Cryptocrystalline diamond aggregates with grain sizes of about 1–10 μm from Siberian deposits were studied using optically detected magnetic resonance (ODMR) and photoluminescence (PL) confocal spectroscopy. The investigated samples were found to contain high concentration of NV⁻ and SiV⁻ centers, which are widely used in quantum technologies. At the present time cryptocrystalline diamond aggregates are actively used only in cutting and drilling industry due to their extremely high hardness and toughness. In present study the ratios of the zero-phonon lines (ZPL's) intensity of NV⁰ and NV⁻ centers, important for technologies, were measured. Their values were in the range of 0.00–0.25 for the first sample and in the range of 0.40–0.46 for the second one. Based on the analysis of the ODMR spectra parameters of NV⁻ centers, it was established that the stress values in the studied diamond aggregates is in the 238–360 MPa range, and the distances between NV⁻ centers and nitrogen exchange-coupled pairs is ca 2 nm. Scanning of ODMR and PL signals allowed us to reveal that NV⁻ centers are concentrated within halos with a diameter of about 5–10 μm, which made it possible to understand an unusual mechanism of these centers formation in nature. The SiV⁻ centers and microinclusions of natural silicon found in cryptocrystalline aggregates indicate their crystallization within the silicate rocks of the Earth's mantle.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112789"},"PeriodicalIF":5.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MXene nanosheets decorated with MoP nanoparticles as high-performance supercapacitor material","authors":"Karrar Hassan Thamir ,&nbsp;Zainab Kadhim Al-Khazragie ,&nbsp;Zainab Ahmed Rejab ,&nbsp;Sarah Z. Al-Ashoor ,&nbsp;Anwar A. Abbood ,&nbsp;Hayder A. Abbood ,&nbsp;Barno Abdullaeva ,&nbsp;Maher Ali Rusho ,&nbsp;M.A. Diab ,&nbsp;A.I. Arabi ,&nbsp;Saiful Islam","doi":"10.1016/j.diamond.2025.112781","DOIUrl":"10.1016/j.diamond.2025.112781","url":null,"abstract":"<div><div>Transition metal phosphides (TMPs) and MXene-based materials have emerged as promising candidates for energy storage applications due to their unique physicochemical properties, including high electrical conductivity, tunable surface chemistry, and abundant active sites. The synergy between TMPs and MXenes offers significant advantages in enhancing electrochemical performance, making them ideal for next-generation energy storage devices such as supercapacitors. In this work, we engineered MoP/MXene nanocomposites directly onto a nickel sheet (NS) substrate via a facile hydrothermal synthesis followed by a phosphorization process. This scalable, binder-free approach ensures strong interfacial coupling between MoP nanoparticles and MXene nanosheets, optimizing charge transfer kinetics and mechanical stability. The resulting hierarchical architecture leverages MXene's conductive framework and MoP's redox-active sites to enhance overall energy storage performance. The incorporation of MoP nanoparticles into the MXene matrix not only significantly modulates the electronic structure, exposing abundant electroactive sites but also tunable interlayer spacing, and promotes rapid ion diffusion pathways. This structural optimization preserves phase stability and electronic integrity during prolonged cycling, as evidenced by the MoP/MXene/NS nanocomposite's specific capacitance of 444 F g⁻¹ at 0.5 A g⁻¹ and 89 % capacitance retention over 5000 galvanostatic charge-discharge cycles. These findings underscore the potential of MoP/MXene nanocomposites as revolutionary electrode materials for supercapacitors. Further exploration of TMP-MXene hybrids could unlock new paradigms in multifunctional energy storage devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112781"},"PeriodicalIF":5.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conductive nanocrystalline diamond (NCD) films for electrocatalytic nitrate reduction","authors":"Long Wen ,&nbsp;Jiangtao Huang ,&nbsp;Jiaoning Tang ,&nbsp;Peigang Han ,&nbsp;Zongyan Zhang ,&nbsp;Junrong Zeng ,&nbsp;Jingwen Nan ,&nbsp;Jinghong Yu ,&nbsp;Chi Fang ,&nbsp;Zihao Cheng ,&nbsp;Jiaming Liang ,&nbsp;Yang He ,&nbsp;Liyu Lin ,&nbsp;Bin He","doi":"10.1016/j.diamond.2025.112786","DOIUrl":"10.1016/j.diamond.2025.112786","url":null,"abstract":"<div><div>The electrocatalytic nitrate (NO₃⁻) reduction to ammonia (NH₃) offers a solution for simultaneous environmental remediation and sustainable ammonia production. However, the rational design of nanocrystalline diamond (NCD) film electrodes balancing high activity and long-term stability remains a critical challenge. Herein, the defect chemistry and surface architecture of NCD films were tailored by adjusting the H₂/Ar gas ratio in a mixed atmosphere of N₂, CH₄, Ar, and H₂ using hot-filament chemical vapor deposition (HFCVD). A series of NCD films with sp³/sp² ratios of 0.71, 1.14, 1.83, 3.12, and 6.14 were prepared by varying the H₂/Ar gas ratio, corresponding to electrical conductivities of 18, 8.62, 7.94, 6.1, and 4.18 S/m, respectively. The sp² carbon phase serves as the primary active site for nitrate adsorption and electron transfer via its conjugated π-bond network. In addition, the sp³ carbon phase provides structural stability through its robust tetrahedral framework. The electrode with the sp³/sp² ratio of 0.71 (H0) achieved the highest faradaic efficiency (FE) of 75.0 % for ammonia synthesis at −1.5 V (vs. RHE), whereas the electrode with the sp³/sp² ratio of 1.14 (H5) exhibited a slightly lower FE of 65.2 % but superior long-term stability, maintaining a steady faradaic efficiency over 50 h of operation. The optimal sp³/sp² ratio window (0.7–1.1) balances electron transport efficiency (sp²-dominated) and structural durability (sp³-dominated), revealing a synergistic interplay between defect-mediated conductivity and chemical robustness. Investigation of the mechanism reveals that optimal H₂/Ar ratios selectively etch sp² impurities while preserving conductive pathways, creating a synergistic interplay between defect-mediated electron transport and chemically robust sp³ frameworks. This study establishes a scalable strategy for engineering high-performance diamond electrocatalysts, bridging the gap between activity and durability in environmental electrochemistry.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112786"},"PeriodicalIF":5.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomass to carbon nanoarchitectonics: Ultrahigh-surface area micro-mesoporous activated carbon synthesized from palmyra palm tree flowers for advanced eco-friendly supercapacitors","authors":"Nagarajan Dhashnamoorthy ,&nbsp;Balaji Nandhakumar ,&nbsp;Ram Kumar Kumar ,&nbsp;A.V. Radhamani","doi":"10.1016/j.diamond.2025.112785","DOIUrl":"10.1016/j.diamond.2025.112785","url":null,"abstract":"<div><div>Bio waste-derived ACs (activated carbons) have recently noticed as consistent and sustainable working materials in energy storageplatform, because of their rich carbon content, low production cost, renewability, ease of mass fabrication, and environmental compatibility. Their tuneable porosity, high specific surface area, and scalable synthesis techniques position them as strong candidates for high-performance, eco-friendly supercapacitor applications. In the present research study, AC synthesized by using Palmyra palm tree flowers, a widely available and virtually zero-cost biomass rich in carbon via a simple hydrochar method followed by chemical activation. Chemical activation was performed through a precisely engineered synthesis approach using different hydrochar-to-KOH ratios (1:1, 1:3, and 1:5), with the 1:3 ratio yielding an exceptionally high surface area of 4600 m²g⁻¹ and hierarchical porous structure. The optimized activated carbon, evaluated for its electrochemical performance in a half cell setup, delivered a high specific capacitance of 553 Fg⁻¹ at 1 Ag⁻¹. Remarkably, it retained 165 % of its starting capacitance at 10 Ag⁻¹ after 10,000 cycles, demonstrating exceptional durability. This is the best reported value with excellent cyclic stability at higher rates to the best of our knowledge for pure activated carbon material in aqueous kinds of electrolyte. Moreover, a symmetric supercapacitor device revealed a specific capacitance of 164 Fg⁻¹ at a current density of 1 Ag⁻¹ in the full-cell configuration. Beyond its adaptation of storage applications, this material also holds potential for use in sensor technologies, air purification, water purification and catalyst support highlighting its versatile functionality.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112785"},"PeriodicalIF":5.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ga2O3-doped CuO-embedded SWCNT nanocomposite: A robust electrochemical sensor for sensitive and selective detection of acetaminophen","authors":"Jahir Ahmed ,&nbsp;M. Faisal ,&nbsp;Jari S. Algethami ,&nbsp;Said M. El-Sheikh ,&nbsp;Farid A. Harraz","doi":"10.1016/j.diamond.2025.112792","DOIUrl":"10.1016/j.diamond.2025.112792","url":null,"abstract":"<div><div>Acetaminophen (AcP), also known as paracetamol, is a highly prevalent non-prescription medication utilized globally for its antipyretic and analgesic properties. AcP detection in pharmaceutical tablets, blood serum, and environmental samples is essential due to its extensive use and potential industrial leakage. To address this issue, we developed an electrochemical AcP sensor based on a novel Ga₂O₃-doped CuO-embedded SWCNT (Ga₂O₃.CuO@SWCNT) nanocomposite fabricated on a glassy carbon electrode (GCE). Advanced characterization methods, such as FESEM, TEM, EDX, XRD, XPS, and Raman spectroscopy, verified the successful synthesis of the Ga₂O₃.CuO@SWCNT nanocomposite. TEM analysis specifically highlighted Ga₂O₃-doped CuO nanoparticles uniformly dispersed across the SWCNT surface. Electrochemical testing via the amperometric technique demonstrated that the Ga₂O₃.CuO@SWCNT/GCE sensor achieved exceptional sensitivity (7.43 μA μM¹ cm²), a wide linear detection range (0.29–237 μM), and an impressive low detection limit (LOD of approximately 0.084 μM). The sensor showed excellent reproducibility and repeatability with 3.32% and 4.12% RSD, respectively. It also retained 95.6 % of its initial CV response after 24 days of storage at ambient conditions, demonstrating its excellent stability. Furthermore, it accurately measured AcP in commercial paracetamol tablets with nearly 100% recovery. The enhanced performance is attributed to the synergistic interaction between Ga₂O₃, CuO, and SWCNTs, where Ga₂O₃ contributes to catalytic efficiency, CuO facilitates redox activity, and SWCNTs provide high surface area and electrical conductivity, together improving electron transfer and target molecule adsorption. These results highlight the Ga₂O₃.CuO@SWCNT/GCE sensor's potential as a reliable platform for the development of efficient electrochemical sensors for other analytes.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112792"},"PeriodicalIF":5.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermally synthesized nitrogen-doped carbon dots as high-performance electrode material for supercapacitor applications","authors":"Abbas I. Alakhras ,&nbsp;Hajo Idriss ,&nbsp;Shivam Dueby ,&nbsp;Kulsum Husain ,&nbsp;Milan Singh ,&nbsp;Vandana Saraswat","doi":"10.1016/j.diamond.2025.112787","DOIUrl":"10.1016/j.diamond.2025.112787","url":null,"abstract":"<div><div>The development of efficient and stable electrode materials is vital for advancing next-generation energy storage systems, particularly supercapacitors. In this work, nitrogen-doped carbon dots (N-CDs) were synthesized via an easy hydrothermal route using citric acid, urea, and isoniazid as nitrogen and carbon sources. The as-prepared N-CDs exhibited a turbostratic carbon structure with abundant surface functionalities, as confirmed through XRD, HRTEM, FTIR, UV–Vis, and XPS analyses. The average particle size was below 10 nm, providing high surface area and facilitating effective ion transport. Electrodes were fabricated by coating the N-CD/PVDF slurry onto a graphite sheet, and their electrochemical performance was evaluated using a configuration of three-electrode in 2 M KOH. Cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) tests established high specific capacitances of 351 F/g and 330 F/g at 5 mV/s and 1 A/g, respectively. The electrode exhibited outstanding rate capability and cycling stability, sustaining 97 % of its capacitance over 10,000 cycles. Electrochemical impedance spectroscopy (EIS) revealed low charge transfer resistance (0.86 Ω) and effective ion diffusion. These findings suggest that nitrogen doping significantly enhances conductivity and pseudocapacitive behavior, rendering the N-CDs a promising candidate for high-performance, stable, and cost-effective supercapacitor electrodes.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112787"},"PeriodicalIF":5.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure and properties of Ti-modified perforated graphite film/Al laminated composites","authors":"Weibing Guo ,&nbsp;Junlei Niu ,&nbsp;Tao Wang ,&nbsp;Zhen Wang ,&nbsp;Xiaoguang Chen","doi":"10.1016/j.diamond.2025.112780","DOIUrl":"10.1016/j.diamond.2025.112780","url":null,"abstract":"<div><div>Continuous graphite film/Al laminated composites suffer from insufficient thermal conductivity in the Z direction, limiting their application in three-dimensional thermal management. This paper innovatively proposes a new configuration of graphite film/Al composites, including the preparation of titanium-modified perforated graphite film and the preparation of the composites by hot-pressing sintering. The study shows that the TiC coating not only enhances the interfacial bonding but effectively inhibits the formation of the harmful phase Al₄C₃. Overall, when the volume fraction of graphite is 60 %, the performance of the perforated graphite film/Al laminated composites is optimal. The thermal conductivity in the X-Y direction is 651.4 W/m·K, and in the Z direction is 35.3 W/m·K, with a tensile strength of 42.7 MPa. More importantly, due to the presence of longitudinal Al columns, the thermal conductivity of the perforated graphite film/Al laminated composites with a volume fraction of 60 % in the Z direction was improved by 89.7 % relative to the continuous laminated composites with the same volume fraction, and the tensile strength was improved by 31.7 %.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"159 ","pages":"Article 112780"},"PeriodicalIF":5.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}