Journal of Physics and Chemistry of Solids最新文献

{"title":"Effect of UV-ozone pretreatment on the reduction of carbonous contamination due to electron beam irradiation of gold surfaces","authors":"Toshikazu Satoh,&nbsp;Kayo Horibuchi","doi":"10.1016/j.jpcs.2025.113128","DOIUrl":"10.1016/j.jpcs.2025.113128","url":null,"abstract":"<div><div>Electron beam irradiation of surfaces, which is widely used in various analytical methods, causes carbonous contamination of the irradiated surfaces. Ultraviolet (UV)-ozone treatment of surfaces has been proposed as a contamination-reducing method. To assess the effect of UV-ozone treatment on contamination reduction, this study investigated the degree of carbonous contamination due to electron beam irradiation of the surfaces of UV-ozone-treated gold films during scanning electron microscopy (SEM), as well as the changes in the surface characteristics of gold caused by UV-ozone treatment. The degree of contamination decreased with increasing UV irradiation time during the UV-ozone treatment; the maximum height of contamination on the gold surface after 20 min of UV irradiation decreased to less than 1/50 of that on untreated gold surfaces. Additionally, with increasing UV irradiation time, the surface free energy of gold increased owing to its polar component, the UV-induced oxidation reaction at the surface of the gold progressed, and the atomic ratio of carbon at the gold surface decreased slightly. Thus, this study comprehensively demonstrates the effect of UV-ozone treatment, which is used as a pretreatment for SEM, on reducing the degree of contamination and reveals that the effect originates from the surface oxidation of gold.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113128"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913667","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":"Probing lattice anharmonicity and thermal transport in nanocrystalline CoSb3 using Raman scattering","authors":"Abhipsa Mohanty ,&nbsp;Arpita Das ,&nbsp;Pratap Kumar Deheri ,&nbsp;Jayakrishna Khatei ,&nbsp;Dibyaranjan Rout ,&nbsp;Gopal K. Pradhan","doi":"10.1016/j.jpcs.2025.113129","DOIUrl":"10.1016/j.jpcs.2025.113129","url":null,"abstract":"<div><div>Understanding and controlling thermal conductivity is central to the development of high-performance thermoelectric materials. In this work, we investigate the lattice dynamics and thermal transport in nanocrystalline CoSb₃ using non-contact, optothermal Raman spectroscopy. Temperature- and laser power-dependent Raman measurements are employed to analyze phonon dynamics and extract anharmonic contributions from both three-phonon and four-phonon scattering processes. The temperature-induced redshifts of Raman-active phonon modes are modelled quantitatively using the Klemens-Balkanski formalism, incorporating both quasiharmonic thermal expansion and intrinsic anharmonicity. By evaluating the shift in Raman mode positions with respect to laser power and temperature, we estimate the lattice thermal conductivity of nanocrystalline CoSb₃ yielding a value of 2.65 ± 0.08 W/mK highlighting strong phonon scattering and thermal boundary resistance at grain interfaces. Our findings underscore the effectiveness of Raman spectroscopy as an analytical technique for probing localized phonon-mediated heat conduction in nanostructured thermoelectrics and offer valuable insights into the role of anharmonic phonon dynamics in determining thermal transport in skutterudites.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113129"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907110","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":"Exploring A2CeCl6 (A = K, Rb, Cs, Fr) lead-free double perovskites via first-principles and device simulation for photovoltaic applications","authors":"Rifat Rafiu ,&nbsp;Md. Sakib Hasan Saikot ,&nbsp;Ali El-Rayyes ,&nbsp;Imtiaz Ahamed Apon ,&nbsp;Mohd. Shkir ,&nbsp;Mohd Taukeer Khan ,&nbsp;M.A. Sayed ,&nbsp;Md. Azizur Rahman","doi":"10.1016/j.jpcs.2025.113126","DOIUrl":"10.1016/j.jpcs.2025.113126","url":null,"abstract":"<div><div>Recent advances in double halide perovskites have sparked significant interest, driving researchers to investigate diverse cation combinations in search of novel materials with exceptional properties. This study investigates lead-free halide double perovskites A₂CeCl₆ (A = K, Rb, Cs, Fr) through first-principles Density Functional Theory (DFT) using CASTEP, along with device-level simulations performed by SCAPS-1D. The A-site cations (K, Rb, Cs, Fr) play a crucial role in tuning the structural stability and optoelectronic properties of these materials, influencing their potential performance in photovoltaic applications. Structural, electronic, optical, mechanical, and bonding properties were analyzed using GGA-PBE and GGA-PBEsol functionals. All compounds exhibit direct band gaps ranging from 1.742 to 1.830 eV, suitable for solar absorption. Optical analyses revealed high absorption coefficients (&gt;10⁵ cm⁻¹ in the UV range), low reflectivity, and strong dielectric responses. Mechanical stability was confirmed through Born criteria, and population analysis using Mulliken and Hirshfeld methods indicated dominant ionic bonding. Among the studied compounds, Cs₂CeCl₆ exhibited the highest photon absorption, while Rb₂CeCl₆ showed superior mechanical robustness. SCAPS-1D simulations of FTO/SnS₂/A₂CeCl₆/Au solar cells revealed that K₂CeCl₆ achieved the best photovoltaic performance, with a maximum power conversion efficiency (PCE) of 17.22 %, open-circuit voltage (V_OC) of 1.02 V, short-circuit current density (J_SC) of 22.5 mA/cm², and a fill factor (FF) of ∼81 %. Device optimization showed that an absorber layer thickness of 0.80 μm, shallow acceptor density of 10¹⁷ cm⁻³, defect density of 10¹⁴ cm^−3, and interface defect density of 10¹¹ cm⁻² significantly improve efficiency. The results highlight the impact of defect tolerance and optimal band alignment in minimizing recombination losses and improving carrier transport, making A₂CeCl_6, particularly K₂CeCl₆, a strong candidate for lead-free solar cell applications.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113126"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913669","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":"Elevated visible light driven photo-catalytic properties of Ni-doped Bi2WO6 via hydrothermal technique","authors":"M. Rakchana,&nbsp;S. Muthukumaran","doi":"10.1016/j.jpcs.2025.113127","DOIUrl":"10.1016/j.jpcs.2025.113127","url":null,"abstract":"<div><div>The present work demonstrated the synthesis of Bi₂WO₆, and Bi_1.98Ni_0.02WO₆ via the hydrothermal technique. XRD analysis confirmed the orthorhombic phase of Bi₂WO₆ without any secondary/impurity-related phases even after Ni doping. Ni²⁺ doping into the Bi–W–O network reduces the crystal growth and induces additional energy levels, structural alterations, defects, and distortions in the crystal network, and hence it reduces the size of from 28 (Bi₂WO₆) to 18 nm (Bi_1.98Ni_0.02WO₆). A reduction in band gap from 2.89 to 2.81 eV by Ni addition is due to the generation of new energy levels and defects. Compared to Bi₂WO₆, Bi_1.98Ni_0.02WO₆ exhibits strong photo-catalytic activity, as evidenced by lower PL intensity. The addition of Ni enhanced its ability for gathering sunlight, which in turn elevated the efficiency of photo-catalytic degradation to 96.9 % @ 84 min under visible light exposure by new energy levels, defect-based deformed states, and red-shift of energy gap. Scavenger experiment confirmed that O₂^•−, and OH^• radicals acted as the main active species for the higher photo-catalytic degradation @ Ni–Bi₂WO₆. The stability test using Bi_1.98Ni_0.02WO₆ as a catalyst showed better dye removal efficiency and improved stability after four repetitive cycles with limited photo-corrosion.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113127"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903230","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":"KSEWA effect interaction on the quantum teleportation in an isotropic two-qubits Heisenberg quantum channel","authors":"Mustapha Ait Lamine,&nbsp;Mostafa Bousder,&nbsp;Hamid Ez-Zahraouy","doi":"10.1016/j.jpcs.2025.113124","DOIUrl":"10.1016/j.jpcs.2025.113124","url":null,"abstract":"<div><div>In this paper, we investigate the influence of the Kaplan-Shekhtman-Entin-Wohlman-Aharony (KSEWA) interaction in the x-direction on quantum teleportation within an isotropic two-qubits Heisenberg quantum channel. We analytically calculate the output concurrence, formation entanglement, entanglement rate, and teleportation fidelity as functions of various parameters. Our results demonstrate that the KSEWA interaction significantly enhances teleportation fidelity at moderate to high temperatures, maintaining values above the classical limit of 2/3 in conditions where conventional channels fail. A comparison with Dzyaloshinskii-Moriya (DM) interaction reveals the superiority of KSEWA in preserving entanglement and stabilizing fidelity, particularly at maximally entangled input states. This work identifies the optimal configurations for practical quantum teleportation and demonstrates that careful tuning of the KSEWA interaction can effectively preserve quantum information during teleportation in a Heisenberg quantum channel.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113124"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996681","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":"Impact of separator on the electrochemical performance of g-C3N4/Co3O4 nanohybrid symmetric supercapacitors","authors":"Manas Nasit ,&nbsp;Kavita Kumari ,&nbsp;Naveen Yadav ,&nbsp;Bon-Heun Koo ,&nbsp;Saurabh Dalela ,&nbsp;Ankush Vij ,&nbsp;Aditya Sharma ,&nbsp;P.A. Alvi ,&nbsp;Shalendra Kumar","doi":"10.1016/j.jpcs.2025.113117","DOIUrl":"10.1016/j.jpcs.2025.113117","url":null,"abstract":"<div><div>The present study aims to evaluate the influence of different separators on the electrochemical performance of a 2D g-C₃N₄ decorated Co₃O₄ symmetric supercapacitor. Exfoliated graphitic carbon nitride (ECN) was combined with Co₃O₄ to create nanocomposites in weight ratios of 1:0.01, 1:0.05, and 1:0.1 (COCN1, COCN2, COCN3). XRD analysis revealed that the ECN possesses a hexagonal structure, while Co₃O₄ exhibits a cubic spinel structure. COCN nanocomposites have been successfully synthesized, as confirmed by analyses using XRD and FTIR techniques. HR-TEM and SAED indicated that the CO₃O₄ adhered to the g-C₃N₄ matrix. The BET analysis revealed that the ECN and COCN2 show specific surface areas of 25 m²/g and 35 m²/g, respectively. The COCN2 nanocomposites attain a specific capacitance of 667.8 F/g at 1 A/g in 1.0 M KOH electrolyte, which is eight times more than ECN, due to the combined effects of the nitrogen content and cobalt oxidation states. The COCN2 exhibits an energy density of 45.45 Wh/kg at 218.75 W/kg power density, with 99.5 % capacitive retention. To explore the influence of different separators in symmetric devices, COCN2 was employed within the Swagelok assembly, featuring two separate types of separators: Whatman paper (COCN2/W/COCN2) and PVA-KOH gel electrolyte (COCN2/GE/COCN2). The COCN2/W/COCN2 device achieved a specific capacitance of 197.25 F/g at a current density of 1.0 A/g. Furthermore, it attained an energy density of 140.27 Wh/kg at a power density of 1600 W/kg, while retaining 94.23 % of its initial capacitance. In contrast, the COCN2/GE/COCN2 device showed a specific capacitance of 69.25 F/g and an energy density of 24.62 Wh/kg at 1600 W/kg, maintaining 95.4 % of its capacitance after 1000 cycles. The synergistic combination of Co₃O₄ and g-C₃N₄ offers a promising strategy for enhancing energy.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113117"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903186","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":"Experimental and DFT-validated development of MgV2O4/Cu2V2O7 Z-scheme nanocomposites for visible-light photocatalytic degradation of imatinib","authors":"Somayeh Mirsadeghi ,&nbsp;Alireza Soroush ,&nbsp;Hamed Zandavar ,&nbsp;Reza Behjatmanesh-Ardakani ,&nbsp;Seied Mahdi Pourmortazavi","doi":"10.1016/j.jpcs.2025.113122","DOIUrl":"10.1016/j.jpcs.2025.113122","url":null,"abstract":"<div><div>Imatinib (IMA), a commonly used tyrosine kinase inhibitor, has become an increasing concern as a pharmaceutical contaminant because of its persistence in aquatic environments and possible mutagenic effects. This study introduces a rationally engineered MgV₂O₄@Cu₂V₂O₇ (MVO@CVO) Z-scheme heterostructure, synthesized through an easy one-step hydrothermal process, for visible-light-driven photocatalytic degradation of IMA. The optimized MVO@CVO composite degraded over 90 % of IMA within 35 min under visible light, with an apparent rate constant roughly 8 times higher than pristine MVO and 3 times higher than CVO. UV–Vis DRS and Tauc analysis showed a bandgap reduction from 3.25 eV in MVO and 2.25 eV in CVO to 1.85 eV in the composite. Radical quenching experiments identified superoxide anions and surface-bound hydroxyl radicals as the primary reactive species. DFT calculations confirmed a bandgap around 2.0 eV, with a minimal interfacial lattice mismatch below 3.5 %, and strong electronic coupling at the interface, enabled by Cu–<em>O</em>–V linkages that facilitate charge transfer. The reconstructed Z-scheme mechanism enhances spatial charge separation, enabling CB electrons in MVO (−0.005 eV vs NHE) to reduce <span><math><mrow><msub><mi>O</mi><mn>2</mn></msub></mrow></math></span> to <span><math><mrow><mo>·</mo><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup></mrow></math></span>, and VB holes in CVO (+2.90 eV) to oxidize <span><math><mrow><msub><mi>H</mi><mn>2</mn></msub><mi>O</mi><mo>/</mo><mi>O</mi><mi>H</mi><mo>−</mo></mrow></math></span> to <span><math><mrow><mo>·</mo><msub><mrow><mi>O</mi><mi>H</mi></mrow><mrow><mi>a</mi><mi>d</mi><mi>s</mi></mrow></msub></mrow></math></span>. This synergistic charge routing overcomes thermodynamic constraints usually seen in type-II systems. The composite maintained more than 90 % of its activity after five cycles, showing excellent reusability. These results position MVO@CVO as a promising, scalable, and durable photocatalyst for removing pharmaceutical pollutants in water purification.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113122"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913665","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":"Amorphous UiO-66-NH2 for next-generation interface engineering in perovskite solar cells","authors":"Nasim Kabir ,&nbsp;Alireza Abbasi ,&nbsp;Yaser Abdi","doi":"10.1016/j.jpcs.2025.113113","DOIUrl":"10.1016/j.jpcs.2025.113113","url":null,"abstract":"<div><div>The dual-interface engineering approach, encompassing bottom interface modulation and top surface passivation, has been instrumental in improving the efficiency and durability of lead halide perovskite solar cells (PSCs). In this study, we explore the application of amorphous metal-organic frameworks (aMOFs), specifically aUiO-66-NH₂, for dual-interface modification and assess the intrinsic mechanisms by which it passivates the bottom and top surfaces of the perovskite layer. The embedded aUiO-66-NH₂ layer improves resistance to ultraviolet radiation and alleviates tensile strain, thereby contributing to much more stable devices and facilitating oriented crystal growth of the perovskite layer. Furthermore, comprehensive analyses reveal that aUiO-66-NH₂ applied to the top surface addresses surface defects, suppresses non-radiative recombination, prolongs carrier recombination lifetime, improves electron diffusion length, minimizes trap densities, and optimizes the crystallization process and structural growth of the perovskite film. Due to the combined effects, the device with bottom-interface modification achieves a champion efficiency of 20.8 %, surpassing the 19.4 % efficiency of the reference device (without passivation). Additionally, the bottom aMOF-passivated and reference devices retain 79 % and 76 % of their initial efficiency, after 4 h of aging under white LED illumination in a nitrogen atmosphere at room temperature.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113113"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907109","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":"Tubular carbon nitride decorated with Ag2V4O11 quantum dots: A binary heterostructure photocatalyst for tetracycline degradation","authors":"Yue Zhang ,&nbsp;Wenqi Zhang ,&nbsp;Zenghui Xue ,&nbsp;Zhangjie Bian ,&nbsp;Xue Lin ,&nbsp;Yuanzhi Hong","doi":"10.1016/j.jpcs.2025.113120","DOIUrl":"10.1016/j.jpcs.2025.113120","url":null,"abstract":"<div><div>In recent years, the contamination of water bodies by antibiotics has received increasing attention. As a class of broad-spectrum antibiotics produced by actinomycetes, tetracycline (TC) is widely used in clinical prophylaxis and treatment of humans and animals, but it is also one of the major sources of persistent organic pollutants (POPs). In this paper, a new Ag₂V₄O₁₁ quantum dots/tubular carbon nitride (TCN) composite with a Z-type heterojunction structure was designed, which can effectively improve the separation and transfer of photogenerated carriers; the system has a strong redox capacity, excellent catalytic performance and good stability. The composite catalyst showed a significantly higher rate of TC degradation under visible light than that of the pure phase TCN and the Ag₂V₄O₁₁ quantum dots. This is due to the fact that TCN with its unique tubular structure can provide more active sites, and the loading of Ag₂V₄O₁₁ quantum dots have excellent photosensitization properties and can enhance light absorption efficiency. Among them, the composite sample with 5 % Ag₂V₄O₁₁ loading showed the highest TC degradation rate at 120 min. In addition, the degradation pathway of TC was proposed based on LC-MS. This study provides an innovative strategy for the photocatalytic degradation of antibiotic pollution by constructing Z-type heterojunction.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113120"},"PeriodicalIF":4.9,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907105","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":"Sea urchin-like Fe2O3 anchored on Ti3C2Tx MXene for improving the electrochemical hydrogen storage performance of Co9S8 material","authors":"Yugang Su ,&nbsp;Yuanlong E ,&nbsp;Siqi Li ,&nbsp;Hongsheng Jia ,&nbsp;Jin Wang","doi":"10.1016/j.jpcs.2025.113118","DOIUrl":"10.1016/j.jpcs.2025.113118","url":null,"abstract":"<div><div>Sea urchin-like Fe₂O₃ particles are prepared using hydrothermal method followed by annealing. The composite of Fe₂O₃ coupled with Ti₃C₂T_x MXene nanosheets (Fe₂O₃/Ti₃C₂) is synthesized by self-assembly route. The Co₉S₈ hydrogen storage material is manufactured by mechanical alloying. To improve performance, composites of Co₉S₈ mixed with Fe₂O₃/Ti₃C₂ are obtained via ball-milling. The electrochemical hydrogen storage and kinetics properties of these electrodes are studied in detail. Eventually, Co₉S₈ modified with Fe₂O₃/Ti₃C₂ composite demonstrates significantly enhanced discharge capacity of 628.7 mAh/g compared with Fe₂O₃ or Ti₃C₂T_x solely modified Co₉S₈ and original Co₉S₈ electrodes. Notably, Co₉S₈ + Fe₂O₃/Ti₃C₂ electrode reveals improved HRD, corrosion resistance, and superior kinetic performance. The enhanced electrochemical activities and kinetics behaviors can be attributed to the synergistic interaction between Fe₂O₃ and Ti₃C₂. The integration of high conductivity, large specific surface area of Ti₃C₂T_x with high catalytic active of sea urchin-like Fe₂O₃ can offer sufficient active sites for hydrogen adsorption, facilitate more efficient hydrogen diffusion and charge transport throughout charge/discharge cycles, thereby optimizing the electrochemical performance of Co₉S₈ electrode.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"208 ","pages":"Article 113118"},"PeriodicalIF":4.9,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895124","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}