Diamond and Related Materials最新文献

{"title":"Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required","authors":"","doi":"10.1016/S0925-9635(24)00780-5","DOIUrl":"10.1016/S0925-9635(24)00780-5","url":null,"abstract":"","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0925963524007805/pdfft?md5=202a03c691d70b6ac53c963ada397dbc&pid=1-s2.0-S0925963524007805-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Special mechanical and tribological protecting effects of the in-situ grown carbon coating on natural rubber","authors":"","doi":"10.1016/j.diamond.2024.111574","DOIUrl":"10.1016/j.diamond.2024.111574","url":null,"abstract":"<div><p>Carbon coatings were deposited on natural rubber (NR) following continuous carbon plasma treatment over varying durations. The microstructures, mechanical properties, and tribological behaviors were analyzed using scanning electron microscopy, infrared spectroscopy, Raman spectroscopy, and a tribometer, among other techniques. The analysis revealed that the carbon coatings are amorphous, featuring a dense and finely structured cauliflower morphology at the nanoscale. A transitional layer between the NR substrate and the carbon coating, evolving due to gradual physicochemical changes at the interface, was identified. The experimental results prove the in-situ growth mechanism of amorphous carbon film, that is, transition of organic carbon structure in the polymer was transformed into an inorganic amorphous carbon structure, and then the epitaxial growth of amorphous carbon films was realized. Observations indicated that, while the hard carbon coating exhibited cracking under lower-pressure scratch tests, it remained well-adhered to the soft NR substrate without any delamination, even under increased pressure. Additionally, the coatings provided effective tribological protection for the NR substrate, reducing both friction and wear. The distinctive mechanical and protective tribological properties of the carbon coating, in-situ grown on the NR substrate, are attributed to the robust adhesion facilitated by the transitional layer.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150131","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":"Multiwalled carbon nanotube-cobalt vanadium oxide composite for high-performance supercapacitor electrodes with enhanced power density and cycling stability","authors":"","doi":"10.1016/j.diamond.2024.111557","DOIUrl":"10.1016/j.diamond.2024.111557","url":null,"abstract":"<div><p>Supercapacitors are becoming increasingly popular as energy storage devices due to their fast charging and discharging characteristics, high power densities, and extended operational lifespans. However, achieving high energy densities while maintaining excellent cycling stability remains a significant challenge. This study investigates the potential of cobalt vanadium oxide (Co₃V₂O₈ or CVO-U) doped with multiwalled carbon nanotubes (CNTs) as an advanced electrode material for high-performance supercapacitors. The CNT-U-CVO composite was synthesized via a hydrothermal method and comprehensively characterized using various techniques, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron microscopy and electrical characterizations. The incorporation of CNTs into the CVO-U material resulted in significant enhancements in electrochemical performance. The CNT-U-CVO composite demonstrated an energy density of 8.49 Wh/kg (37 mWh/cm²) and an specific capacitance of 244 F/g (1076 mF/cm²), outperforming the pristine CVO material. The CNT-U-CVO composite exhibited optimal capacitance behavior, improved charge transfer kinetics, and accelerated ion transport, as demonstrated by cyclic voltammetry and galvanostatic charge-discharge experiments. These results were attributable to the CNTs' increased surface area and better electrical conductivity. A supercapacitor device with an asymmetric design was created using the CNT-U-CVO composite as the positive electrode and activated carbon as the negative electrode. This device exhibited outstanding performance, with an energy density of 6.93 Wh/kg (0.12 mWh/cm²), a power density of 320 W/kg (5.6 mWh/cm²), and remarkable cycling stability. It retained 72 % of its initial capacitance even after undergoing 6000 charge-discharge cycles. The results emphasize the promise of CNT-U-CVO materials as very attractive candidates for energy storage applications with superior performance, including enhanced energy density, power density, and cycling stability.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150034","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":"Multifunctional magnetic graphene/nano cellulose hybrid aerogel with excellent electromagnetic wave absorption and thermal insulating performances","authors":"","doi":"10.1016/j.diamond.2024.111573","DOIUrl":"10.1016/j.diamond.2024.111573","url":null,"abstract":"<div><p>Due to the increase in electromagnetic wave radiation pollution, there is a critical need for high-performance electromagnetic wave absorption (EWA) materials to mitigate electronic emissions from electronics and electro-mechanical devices. However, manufacturing EWA materials with strong attenuation capabilities and thermal characteristics remains a challenging problem, limiting their further application in daily life. This research demonstrates the rational fabrication of a novel magnetic reduced graphene oxide/cellulose nanofiber (M-rGO/CNF) hybrid aerogel with magneto-conduction networks for EWA applications. The M-rGO/CNF aerogel provided outstanding structural integrity, excellent magnetic permeability, and remarkable EWA capabilities induced by the synergistic impact of impedance matching features and magnetic loss capability. Our study provides a new approach to fabricating highly stable aerogels with excellent mechanical properties, thermal insulation properties, and EWA absorption performance.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150129","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":"Mechanical performance of amorphous diamond-like carbon nanowires","authors":"","doi":"10.1016/j.diamond.2024.111546","DOIUrl":"10.1016/j.diamond.2024.111546","url":null,"abstract":"<div><p>Amorphous carbon nanowires (NW) are a fundamental piece in the study of novel nanoarchitectures with unexpected mechanical properties. However, the failure mechanism of amorphous carbon NW is still missing. In this study, classical molecular dynamics was employed to conduct stress-strain tests to address the mechanical response of amorphous carbons NW with different radii. This research characterizes the mechanical properties of aC NW with different sp³ contents, including Youngs modulus and ultimate tensile stress. Our study reveals that plastic deformation is mediated by chemical modifications in carbon bonding, leading to transitions from sp² to sp³ and vice versa. We observed that denser amorphous carbon materials undergo a transition from sp³ to sp² bonding prior to failure, facilitated by the recombination of sp² clusters. Additionally, plastic deformation in amorphous carbon NW is facilitated by the formation of shear transformation zones and nanovoids, with the deformation mechanism strongly dependent on the average coordination of carbon atoms. These insights provide valuable information for designing nanomaterials with tailored mechanical properties.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150136","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":"Fe3C/Fe implanted hierarchical porous carbon as efficient electromagnetic wave absorber","authors":"","doi":"10.1016/j.diamond.2024.111556","DOIUrl":"10.1016/j.diamond.2024.111556","url":null,"abstract":"<div><p>The rapid development of communication technology has led to severe microwave pollution, which presents a challenge for microwave-absorbing composites. Current research suggests achieving superior microwave absorption requires the use of multi-component operation and ingenious structural design. Consequently, the present study has prepared continuous porous carbon (CPC) materials doped with large amounts of Fe₃C/Fe nanoparticles (Fe@CPC) using carbonization and acid etching. By balancing the advantages of the above strategies, it is possible to address issues such as poor impedance match, single loss capacity, easy oxidation of magnetic metals/alloys, and the limited absorption bandwidth of conventional absorbing materials at the same time. The material exhibits a minimum reflection loss of −23.2 dB with an efficient absorption range of 5.3 GHz at 1.9 mm at a filler content of just 10 wt% in the paraffin matrix. In this paper, the samples with a continuous porous structure were prepared by a simple method, and the properties were excellent due to the appropriate preparation method and the synergistic effect of the multi-component composite. The porous structure facilitates the presence of a considerable number of active sites, which enables the loading of a substantial quantity of metal ions. Furthermore, nanoparticles are capable of aggregating and dispersing on the surface. This paper presents a theoretical framework for understanding the synergistic effect of microwave radiation through interfacial polarization and micro-scale magnetic interaction. Nevertheless, there are still obstacles to overcome in terms of achieving precise control over the structural design and ensuring the compatible integration of metal components.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150135","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":"Hydrothermal preparation of cotton-based rGO/N-doped porous carbon as electrode materials of supercapacitors","authors":"","doi":"10.1016/j.diamond.2024.111566","DOIUrl":"10.1016/j.diamond.2024.111566","url":null,"abstract":"<div><p>Porous carbon electrode materials are commonly used in supercapacitors due to their inexpensive raw materials, simple processing, and low pollution, aligning with the vision for green energy storage. Consequently, there is a current trend to discover porous carbon electrode materials with superior electrochemical properties. To enhance the pore volume ratio and electrochemical performance of porous carbon materials, this study proposes a hydrothermal method to pretreat the raw materials, facilitating the doping of nitrogen from urea. Moreover, graphene is introduced for its excellent conductivity, which can further improve the electrochemical properties of the material. We found a new one-step reduction Graphene Oxide (<em>rGO</em>)and the doping of nitrogen (N) elements were optimized by hydrothermal method, the wettability and pseudo-capacitance performance of the material are improved, and HTPC-700 shows a very excellent specific capacitance, its specific capacitance reaches 600 F g⁻¹ at a current density of 0.5 A g⁻¹, and it even reaches 260 F g⁻¹ at a current density of 1 A g⁻¹. Meanwhile the power density and energy density are respectively 74 W h kg⁻¹ and 280 W kg⁻¹. It also exhibits a remarkable capacitance retention rate of over 98.7 % after 5000 cycles at a current density of 1 A g⁻¹. Additionally, it demonstrates a rich ant nest-like pore structure and good specific surface area of 2427 m²/g, and a large pore volume of 1.09 cm³/g after carbonization and KOH activation. This study offers a novel doping method and provides a unique perspective for the development of porous carbon electrodes.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150123","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":"Molten salt-confined construction of biocarbon 2D based on Megathyrsus Maximus biomass for high-performance symmetric supercapacitor","authors":"","doi":"10.1016/j.diamond.2024.111558","DOIUrl":"10.1016/j.diamond.2024.111558","url":null,"abstract":"<div><p>Exploring infinite resources, green strategy, and inexpensive for producing 2D biocarbon nanosheets is an essential method in renewable energy. This study aims to develop a eutectic salt-induced activation process for the production of porous carbon nanosheets with well-controlled microstructure using varying ZnCl₂ molarity levels. The results showed that biocarbon featuring thin nanosheets with 2D structure and a high specific surface area of 1294 m²g⁻¹ could be obtained in eutectic salt ZnCl₂ at 0.5 molarity with a specific capacitance reaching 495 Fg⁻¹. In addition, the capacitive properties of the cells decreased when the molarity was increased to 0.7 M, leading to a decline in specific capacitance to 171 Fg⁻¹. Based on these results, the new and low-cost strategy of eutectic salt media provided an effective method of converting guinea grass into highly valuable biocarbon in the field of electrochemical energy storage.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150134","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":"One-step self-assembled biomass carbon aerogel/carbon nanotube/cellulose nanofiber composite for supercapacitor flexible electrode","authors":"","doi":"10.1016/j.diamond.2024.111530","DOIUrl":"10.1016/j.diamond.2024.111530","url":null,"abstract":"<div><p>Flexible and exceptionally lightweight energy storage devices are crucial for wearable electronic gadgets. Biomass materials are emerging as ideal flexible electrode components due to their biocompatibility and non-toxic nature. In this study, pineapple leaf fibers were utilized to create activated biomass carbon aerogel (Bio-CAA). Then, carbon nanotubes (CNTs) were integrated as conductive additives, combined with sturdy pineapple leaf cellulose nanofibers (CNFs) to establish a robust 3D framework. Utilizing a one-step self-assembly method, carbon aerogel/carbon nanotube/carbon nanofiber (Bio-CAA/CNT/CNF) flexible composite electrode materials were successfully synthesized. The porous structure of Bio-CAA effectively minimized the aggregation of CNTs, thereby significantly enhancing the electrochemical performance of the electrode material. The characterization indicated that the carbon aerogel composite exhibited a high specific surface area (684.275 m² g⁻¹) after tablet compression. The material was light yet robust, capable of being bent arbitrarily and recovering its original shape and withstanding 400 Kpa of pressure at an 88 % strain rate, demonstrating excellent mechanical properties. In a three-electrode system, the Bio-CAA/CNT/CNF = 19:1:1 based electrode exhibited a capacitance of 481 F g⁻¹ at a current density of 1 A g⁻¹. The CAA/CNT/CNF = 19:1:1 based solid symmetric supercapacitor (SSC) displayed excellent cycling stability, preserving 91.7 % capacitance after 10,000 cycles at a current density of 5 A g⁻¹. It achieved an energy density of 39.63 Wh kg⁻¹ at a power density of 500 W kg⁻¹. This biomass-derived carbon aerogel-based composite material demonstrates exceptional energy storage capabilities, and its lightweight attributes make it highly suitable for use in flexible displays, wearable devices, and related fields.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150808","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":"Nanoarchitectonics with reduced graphene oxide nanosheets for photo- and humidity sensing properties","authors":"","doi":"10.1016/j.diamond.2024.111563","DOIUrl":"10.1016/j.diamond.2024.111563","url":null,"abstract":"<div><p>The present study explores the photo- and humidity sensing properties of reduced graphene oxide (rGO) sheets at room temperature. Graphite powder was chemically oxidized using a modified Hummer's approach to produce rGO sheets. The physicochemical traits of the rGO sensor were analyzed by various characterization techniques, including X-ray diffraction (XRD), UV–vis absorption spectra, Raman spectroscopy, field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HR-TEM). Raman spectroscopic micrograph exhibits two vibrational modes: D-band at 1329 and G-band at 1587 cm⁻¹. The rGO photosensor shows a maximum responsivity of about 7.22 AW⁻¹ with quick response and recovery times. The sensor showed a maximum sensitivity of 37 % in humid environments, with response and recovery durations of 44 s and 126 s, respectively. The rGO-based sensor showed excellent photosensitivity, exceptional stability, and a better response to photo and humid environments. The excellent performance of rGO sheets proves to be a promising functional material in sensing devices.</p></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150137","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}