Next Materials最新文献

{"title":"Physicochemical properties of rGO-LaFeO3 microspheres tailored by solvents and calcination temperature","authors":"Neeru Sharma ,&nbsp;Kirti Bhardwaj ,&nbsp;Pashupati Pratap Neelratan ,&nbsp;Sanjeev Kumar Sharma","doi":"10.1016/j.nxmate.2025.100985","DOIUrl":"10.1016/j.nxmate.2025.100985","url":null,"abstract":"<div><div>This study investigates the influence of solvents and calcination on the structural and morphological properties of rGO-LaFeO₃ composites by a one-step hydrothermal approach using two precursors: C₆H₈O₇ and KOH, then calcined at 800 °C for 2–6 h. Microstructural analysis confirmed that citric acid-assisted composites formed microspheres, while KOH-assisted composites exhibited mixed morphology and structures. EDAX and XPS give the elemental/chemical compositions for both products. The XRD pattern revealed a higher degree of crystallization with a decrease in lattice strain and dislocation density under calcination. Dislocation density and lattice strain were found 21.0 × 10⁻³ cm⁻³ and 5.2 × 10⁻² respectively for rGO-LaFeO₃ (C₆H₈O₇), while it becoming lesser as 4.8 × 10⁻³ cm⁻³ and 2.4 × 10⁻² for rGO-LaFeO₃ (KOH) under calcinations (800 ℃) for duration of 6 h. FT-IR and Raman spectra further confirmed the presence of the Fe-O phase. Before calcinations, the higher surface area was obtained for the composite using KOH (82.40 m²/g), while a decline in the surface area of the composite was observed using C₆H₈O₇ (40.21 m²/g) under calcinations for 6 h. UV-Vis investigates a tunable bandgap, with rGO-LaFeO₃ (KOH) maintaining a lower bandgap (∼2.03 eV) than rGO-LaFeO₃ (C₆H₈O₇) (∼2.26 eV) without calcination, while becoming wider (∼2.34 eV) under calcination for 6 h. A higher degree of crystallization of rGO-LaFeO₃ (KOH) under calcinations causes a wider bandgap, enables charge carrier transport, and marks the composite as an n-type material. The findings, higher surface area (82.40 m²/gm), lower bandgap (∼2.03 eV), and larger crystallite size (14.5 Å) highlight tailored physicochemical properties of rGO-LaFeO₃ (KOH) and make it a more promising material than citric-acid derived composite to give better performance for gas sensing toward NO₂ gas.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100985"},"PeriodicalIF":0.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of chemical-structure modification on physicochemical properties of unsaturated and saturated natural esters for power transformers","authors":"Sadiq Umar ,&nbsp;Abdulsalam Ismail Galadima ,&nbsp;Abdulraheem Aliyu ,&nbsp;Nikola Chalashkanov ,&nbsp;Abdelghafar Amoka Abdelmalik","doi":"10.1016/j.nxmate.2025.100971","DOIUrl":"10.1016/j.nxmate.2025.100971","url":null,"abstract":"<div><div>The physicochemical properties of natural esters are intrinsically linked to their fatty acid composition. However, double-bond unsaturation in these fatty acids results in poor oxidation stability, restricting their application as insulation liquids in free-breathing transformers. Remediation technique through epoxidation involves altering the chemical structure of fatty acids in the esters. In this study, neem and palm kernel oils which represent highly unsaturated and saturated fatty acid oils respectively were transesterified and epoxidatized to improve flow and oxidation stability properties. Changes in viscosity, density, pour point, specific heat, viscosity activation energy, and breakdown strength due to the modification were examined. The pour point of neem increased from 6.0°C to 10.0°C, and its breakdown voltage (BDV) was raised by 14.9 %, while the pour point of palm kernel oil decreased from 25.2 °C to −6.0 °C, with a 16.5 % decrease in BDV after transesterification. However, both oil esters showed equal percentage decrease in viscosity and density after transesterification independent of their fatty acid composition. Epoxidation significantly increased the viscosity of the neem (∼76 %) but only slightly in palm kernel oil (∼8 %). However, the superior fire safety and BDV of epoxy neem make it a more suitable high voltage insulation liquid candidate than palm kernel ester.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100971"},"PeriodicalIF":0.0,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metamaterial with tunable positive to negative Poisson’s ratio inspired by the Saint Andrew’s Cross","authors":"Teik-Cheng Lim","doi":"10.1016/j.nxmate.2025.100954","DOIUrl":"10.1016/j.nxmate.2025.100954","url":null,"abstract":"<div><div>This paper presents a novel mechanical metamaterial inspired by the geometric form of the Saint Andrew’s Cross (Saltire), designed to exhibit a tunable on-axes Poisson’s ratio ranging from positive to negative values. The metamaterial comprises unit cells constructed from interconnected rotating rigid hexagons and triangles, which deform through coordinated rotation about hinge joints. A theoretical analysis based on kinematic transformations and energy equivalence is conducted to derive closed-form expressions for the on-axes Poisson’s ratios and Young’s moduli. A key parameter—the shape descriptor—governs the deformation behavior and determines whether the metamaterial exhibits auxetic or non-auxetic characteristics over a range of internal angles. The study identifies a critical shape descriptor that yields a constant Poisson’s ratio of − 1, independent of deformation, and enables identical axial stiffnesses. For non-critical geometries, the metamaterial demonstrates sharp directional stiffness contrasts, making it suitable for adaptive structures and anisotropic mechanical filtering. The proposed Saltire-based design broadens the geometrical paradigm for mechanical metamaterials, offering tunability in both auxeticity and stiffness through simple geometric adjustments.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100954"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative study of machine learning techniques and data processing for predicting the compressive strength of pervious concrete with supplementary cementitious materials and chemical composition influence","authors":"Navaratnarajah Sathiparan ,&nbsp;Pratheeba Jeyananthan ,&nbsp;Daniel Niruban Subramaniam","doi":"10.1016/j.nxmate.2025.100947","DOIUrl":"10.1016/j.nxmate.2025.100947","url":null,"abstract":"<div><div>This study introduces a novel approach that combines machine learning algorithms, such as Extreme Gradient Boosting (XGB) and Artificial Neural Network (ANN), with chemical composition analysis to predict the compressive strength of pervious concrete. By considering a wider range of supplementary cementitious materials (SCMs) and chemical oxides, such as calcium oxide (CaO) and silicon dioxide (SiO₂), this approach significantly improves prediction accuracy over traditional empirical models, providing a more robust solution for sustainable construction. A comprehensive dataset of 659 observations was compiled from various studies, emphasizing the significance of input variables such as calcium oxide (CaO), silicon dioxide (SiO₂), aluminium oxide (Al₂O₃), and curing period. Various data processing methods were employed to enhance model performance, including Max-Min normalization, Z-score normalization, robust scaling, log transformation, and sigmoid normalization. The study demonstrates that XGB outperformed other machine learning models, achieving a training R² of 0.99 and a testing R² of 0.92, with an RMSE of 2.85 MPa. This research highlights the significance of incorporating chemical composition analysis (CaO, SiO₂) into machine learning models to enhance the prediction accuracy of the compressive strength of pervious concrete. The novelty of the approach lies in combining advanced data processing techniques with a diverse dataset of SCMs, offering an innovative solution for optimizing concrete formulations in engineering. Sensitivity analysis highlighted the critical importance of CaO, SiO₂, and curing period in predicting compressive strength, while aggregate size had a minimal impact. This research contributes to international efforts in sustainable infrastructure development by integrating machine learning techniques with chemical composition analysis to predict the compressive strength of pervious concrete. This innovative approach offers global implications for optimizing concrete mix designs, reducing material waste, and enhancing the durability of urban infrastructure.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100947"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carrier transport mechanisms in metal-semiconductor-metal (MSM) devices: A review study","authors":"Razibur Rahman ,&nbsp;Zulkar Naaen Turjo ,&nbsp;Sheam Bin Sayhid","doi":"10.1016/j.nxmate.2025.100917","DOIUrl":"10.1016/j.nxmate.2025.100917","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This review provides a comprehensive analysis of carrier transport mechanisms in Metal–semiconductor–metal (MSM) devices, with a focus on the distinctive charge transport behavior arising from their dual Metal–semiconductor interface configuration. While existing reviews, such as those on semiconductor nanostructures, have extensively explored carrier dynamics in individual nanowires, nanocrystals, and related nanoscale architectures with ohmic or single Schottky contacts, this work specifically addresses MSM structures characterized by dual Metal–semiconductor interface configuration. A diverse range of MSM structures are discussed, including those based on silicon carbide (SiC), gallium nitride (GaN), aluminum gallium nitride (Al&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;Ga&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;x&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;N), nitrogen-doped ZnO (ZnO:N), graphene, and tin dioxide (SnO&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;), fabricated using different techniques such as RF sputtering, molecular beam epitaxy, and metal–organic chemical vapor deposition (MOCVD). Transport phenomena such as space charge limited conduction (SCLC), thermionic emission, thermionic field emission (TFE), Poole–Frenkel emission (PFE), and variable range hopping (VRH) are examined in relation to their contributions toward the nonlinear current–voltage (I–V) characteristics commonly exhibited in MSM devices. The study places strong emphasis on the extraction and physical interpretation of key parameters: SCLC exponent, trap density, and critical voltage in the SCLC regime; Schottky barrier height (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;Φ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;B&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) and ideality factor (&lt;span&gt;&lt;math&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;) in thermionic emission; energy parameters such as &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;ɛ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;′&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;E&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;00&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; in TFE; high-frequency dielectric constant (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ɛ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) and trap ionization energy (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;Φ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;t&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) in PFE; and the characteristic temperature (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;) in VRH, which relates to the density and spatial distribution of localized states. By connecting these extracted quantities to trap dynamics, interface phenomena, and field effects, the review offers a structured framework for interpreting the nonlinearities observed in experimental I–V responses. This synthesis serves as a technically grounded reference for advancing the modeling, characterization, and design of MSM devices in emerging applications such as photodetection, gas sensing, high-power electronics, and transparen","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100917"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lead-free halide perovskites for photovoltaic smart windows","authors":"Swapna S. Chigari ,&nbsp;Vidyasagar C. C ,&nbsp;Viswanath C. C ,&nbsp;Shweta Muttennavar","doi":"10.1016/j.nxmate.2025.100881","DOIUrl":"10.1016/j.nxmate.2025.100881","url":null,"abstract":"<div><div>For over half a century, the biggest photovoltaic (PV) market has been conquered by silicon PV technology but recent years have witnessed perovskites as promising solar cell materials with manifold applications. Day-to-day energy needs can be pleased by the use of materials that harvest solar energy. Thermo-responsive change in the colour exhibited by many of the perovskites have got applied in the groundwork of solar powered smart windows. Thermal comfort level inside the building is very important which mainly depends on the windows and it can be achieved by thermochromic perovskites owing to the flexibility of their crystal structure in response to temperature, therefore these can be leading candidates in the field of smart energy gadgets. Besides all these, there are some limitations like toxicity of the metal atom used in the thermochromic perovskite, preparation methods, stability issues, power conversion efficiencies etc. Designing such perovskite material for tackling current challenges is a key area of research among researchers in the photovoltaic sector. This review mainly centres on the lead-free thermochromic perovskite materials, easy and cost-effective preparation method for solar powered smart window application.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100881"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A microwave-assisted hydrothermal method for rapidly synthesizing nanocrystalline carbonated hydroxyapatite from calcium resources in crab shell waste","authors":"Yustina M. Pusparizkita ,&nbsp;Roihan A. Faizal ,&nbsp;Samsul A. Perwira Negara ,&nbsp;Rifky Ismail ,&nbsp;J. Jamari ,&nbsp;Athanasius P. Bayuseno","doi":"10.1016/j.nxmate.2025.100946","DOIUrl":"10.1016/j.nxmate.2025.100946","url":null,"abstract":"<div><div>Nanocrystalline carbonated hydroxyapatite (CHA) shows significant promise for bone replacement within biomedical applications. This study aimed to synthesize nanocrystalline CHA using calcium resources from crab shell waste through a microwave-assisted hydrothermal technique. In this way, the crab shells were initially pulverized and calcined at 900° C for 5 h, yielding Ca(OH)₂ powder. This powder was then dissolved in a prepared hydrothermal solution of diammonium phosphate and subjected to microwave irradiation for 3 min at power levels of 80, 240, and 400 watt. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) analyses confirmed the nanocrystalline CHA type B formed with a crystallinity index ranging from 79 % to 99.5 %. SEM images show the agglomerated morphology (0.5 μm-1 μm) of nanocrystalline CHA, with crystallite sizes ranging from 15 nm to 17 nm. Recycling calcium biogenic sources from crab shells as a powder feedstock using microwave-assisted synthesis is a rapid and environmentally friendly method for producing nanocrystalline CHA powder, which has potential applications in biomedical materials due to its high bioactivity and adsorption capacity.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100946"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart nanomaterials for semiconductor applications: Recent advances in energy storage and biosensing technologies","authors":"G.K. Prashanth ,&nbsp;Srilatha Rao ,&nbsp;H.S. Lalithamba ,&nbsp;N.P. Bhagya ,&nbsp;M. Mahadeva Swamy ,&nbsp;S.R. Yashodha ,&nbsp;H.S. Yogananda","doi":"10.1016/j.nxmate.2025.100964","DOIUrl":"10.1016/j.nxmate.2025.100964","url":null,"abstract":"<div><div>The evolution of nanomaterials has revolutionized the design of functional devices, particularly in semiconductor-based applications. This review critically explores recent advancements in smart nanomaterials for two transformative domains: energy storage and biosensing. Unlike earlier descriptive reviews, it integrates performance comparisons, mechanistic insights, and synthesis–structure–function relationships across diverse nanostructures such as metal oxides, quantum dots (QDs), carbon hybrids, and 2D materials. Key device configurations—including supercapacitors and field-effect transistor (FET)-based biosensors—are examined to highlight how morphological and compositional tuning of nanomaterials affects electrochemical and biorecognition performance. Comparative analysis is supported by data from recent high-impact studies, while unresolved challenges such as scalability, reproducibility, toxicity, and real-world integration are addressed. The novelty of this review lies in its dual-focus framework, juxtaposing materials and mechanisms from both energy and biomedical domains, thus providing unified insights for next-generation multifunctional semiconductor systems. This approach addresses a critical gap in the literature, where most reviews focus exclusively on either energy or biosensing platforms, without considering their overlapping synergies. The final section presents a forward-looking perspective on standardization, biocompatibility, and AI-assisted device integration, emphasizing the roadmap from laboratory research to real-world deployment.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100964"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bamboo biochar and carbonation enhanced the compressive and flexural strength of cement mortar","authors":"Siew Choo Chin ,&nbsp;Pravina K. Gunasekaran ,&nbsp;Jialing Che ,&nbsp;N. Anand ,&nbsp;Jolius Gimbun","doi":"10.1016/j.nxmate.2025.100959","DOIUrl":"10.1016/j.nxmate.2025.100959","url":null,"abstract":"<div><div>The construction industry faces growing pressure to adopt sustainable materials that enhance both structural performance and environmental benefits. This study investigates the potential of bamboo biochar as a sustainable filler to strengthen cement mortar while contributing to CO₂ sequestration. The primary objective is to evaluate the effects of bamboo biochar addition, alongside carbonation treatment, on the mechanical properties of cement mortar. The surface morphology of the biochar was characterized using scanning electron microscopy, while mortar mixes with varying water-to-cement (w/c) ratios (0.45–0.55) and biochar dosages (2 %–8 %) were prepared. Flowability, compressive, and flexural strength tests were conducted on samples cured for 7–56 days, with a control mix for comparison. Results revealed that a 6 % biochar addition with a w/c ratio of 0.45 yielded optimal performance, achieving compressive and flexural strengths of 46.98 MPa and 9.60 MPa, respectively. Carbonation further enhanced these strengths by up to 24 % and 9 %, while biochar incorporation increased CO₂ sequestration by 53 % compared to the control. These findings demonstrate that bamboo biochar not only improves mechanical strength through mechanisms such as internal curing, filler effect, nucleation, and improved interfacial bonding but also contributes to carbon capture. This dual benefit underscores its significance as a promising material for sustainable and resilient construction practices.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100959"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced engineering of Nd-doped LiNMC hybrid supercapacitor materials with planetary ballmill method and DEM-based microstructural simulation","authors":"Mahruri Arif Wicaksono ,&nbsp;Bambang Suharno ,&nbsp;Widi Astuti ,&nbsp;Myrna Ariati Mochtar ,&nbsp;Yayat Iman Supriyatna ,&nbsp;Ika Maria Ulfah ,&nbsp;Deni Ferdian","doi":"10.1016/j.nxmate.2025.100987","DOIUrl":"10.1016/j.nxmate.2025.100987","url":null,"abstract":"<div><div>This study investigates the role of neodymium oxide (Nd₂O₃) doping in enhancing the performance and durability of LiNi_0.8Mn_0.1Co_0.1O₂(NMC811) cathode materials for advanced energy storage applications. Using the Discrete Element Method (DEM), the effects of milling parameters, such as particle shape, rotation speed, and ball-to-powder diameter ratio (BPDR), were simulated in a planetary ball mill. FTIR analysis identified characteristic M-O bonds (Ni-O, Co-O, Mn-O) within 400–700 cm⁻¹. XRD characterization confirmed the successful synthesis of the rhombohedral NMC811 phase (R3m space group) after sintering at 850 °C for 12 h. Morphological analysis revealed a predominantly spherical structure, enhancing ion transport efficiency and reducing internal resistance. Cyclic voltammetry (CV) with a potential range of −0.7 to −0.1 V showed oxidation and reduction peaks at approximately −0.3 V and −0.5 V, respectively. Nd doping significantly increased the specific capacitance from 44.20 F/g for undoped LiNMC811 to 67.34 F/g at 0.9 % Nd doping. However, power density decreased from 74.35 W/kg to 50.92 W/kg for the same doping level, highlighting a trade-off between ion transport and power delivery. Efficiency after 500 charge-discharge cycles demonstrated optimal retention for undoped NMC811 at 100 %, decreasing to 80.01 % at 0.3 % Nd doping and recovering to 85.73 % at 0.6 % Nd doping before slightly dropping to 83.35 % at 0.9 % Nd doping. DEM simulation in 500 RPM, the mechanical system operates under low energy and stress conditions, with a moderate compressive load and minimal torque.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100987"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}