Journal of Physics and Chemistry of Solids最新文献

{"title":"Role of rapidly solidified microstructure in corrosion and passivation of Al–Ni alloys","authors":"Xinlong Lu ,&nbsp;Zhigang Qi ,&nbsp;Yanxu Li ,&nbsp;Jiachang Li ,&nbsp;Qi Chen ,&nbsp;Zhaoxuan Wang ,&nbsp;Ziqi Song ,&nbsp;Mehran Khan Alam ,&nbsp;Yingjie Li ,&nbsp;Weimin Wang","doi":"10.1016/j.jpcs.2025.112914","DOIUrl":"10.1016/j.jpcs.2025.112914","url":null,"abstract":"<div><div>The rapidly solidified Al_{100-<em>x</em>}Ni_<em>x</em> ribbons with <em>x</em> = 0, 3.1, 10 and 25 (labeled as Ni0, Ni3.1, Ni10 and Ni25) were melt spun with the microstructures of monophasic α-Al, α-Al + Al₃Ni eutectic mixture, α-Al + Al₃Ni hypereutectic mixture, and sole peritectic Al₃Ni phase, respectively. As shown in the electrochemical and XPS tests, these ribbons have a monotonic increase in the passive current density, wetting angle, the charge density and Al 2p binding energy of outer layer with increasing Ni content, indicating the electrical properties of their passive films changed continually. In addition, their pitting potential, later corrosion resistance, oxygen diffusion parameter decrease first and then increase with the addition of Ni, showing a minimum in Ni3.1 ribbon with the eutectic microstructure, which is ascribed to the numerous α-Al/Al₃Ni interfaces. These results can help us to deeply understand the passivation of Al–Ni alloys and explore their application in the anti-corrosion environment.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112914"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223365","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":"Tunable Schottky barriers in TaTe2-In2XY ((X≠Y)= S, Se, Te) van der Waals heterostructures via interface engineering","authors":"Umair Khan ,&nbsp;Basit Ali ,&nbsp;Yuxiang Bu ,&nbsp;M. Idrees ,&nbsp;B. Amin","doi":"10.1016/j.jpcs.2025.112832","DOIUrl":"10.1016/j.jpcs.2025.112832","url":null,"abstract":"&lt;div&gt;&lt;div&gt;We focus on exploring the potential of novel two-dimensional (2D) Janus materials to overcome critical challenges in advanced nanoelectronic devices by achieving Ohmic contact at the metal–semiconductor (MS) interface. The asymmetrical structure with unique electronic properties of these Janus materials, offer promising opportunities to optimize contact resistance and enhance carrier mobility for high-performance nanoelectronic devices. Using a series of calculations based on Density Functional Theory (DFT), electronic properties and contact type (Schottky/Ohmic) at the interface of TaTe&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;-In&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;XY ((X&lt;span&gt;&lt;math&gt;&lt;mo&gt;≠&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;Y)= S, Se, Te) van der Waals heterostructures (vdWHs) are investigated. The mechanical and thermal stabilities of these systems are confirmed via Born criteria, binding energy and ab-initio molecular dynamic (AIMD) simulations, while phonon spectra are used to further verify their dynamical stability. Electronic band structure and density of states show type-III band alignment with the p-type Schottky contact at the interface of TaTe&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;-In&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;XY ((X&lt;span&gt;&lt;math&gt;&lt;mo&gt;≠&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;Y)= S, Se, Te) vdWHs. These calculations are followed by a detailed examination of the strain engineering to modulate height of the Schottky contact and tunneling barrier probability. Interestingly, a compressive strain of 2% switched TaTe&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;-In&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;STe and TaTe&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;-In&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;SeTe from Schottky to Ohmic contact, highlighting the tunability of these vdWHs for tailored electronic applications. Electrostatic potential along z-direction, confirm transfer of charge from TaTe&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; to the In&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;XY layer in TaTe&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;-In&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;XY ((X&lt;span&gt;&lt;math&gt;&lt;mo&gt;≠&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;Y)= S, Se, Te) vdWHs. Charge density difference and Bader charge analysis, show charge depletion (accumulation) around TaTe&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; (In&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;XY) layer, that indicate loses (gain) of electrons in TaTe&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; (In&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112832"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223363","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":"Nickel sulfide–transition metal sulfides bi-electrocatalyst supported on Nickel Foam for water splitting","authors":"Amani E. Fetohi,&nbsp;Dena Z. Khater,&nbsp;R.S. Amin,&nbsp;K.M. El-Khatib","doi":"10.1016/j.jpcs.2025.112906","DOIUrl":"10.1016/j.jpcs.2025.112906","url":null,"abstract":"<div><div>Developing electrochemical devices for renewable energy relies on essential improvements in electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). In this work, a series of prepared electrocatalysts composed of nickel sulfide and transition metal sulfides (NiS_x-MS_x/rGO-ST, where M = Zn, Co, Mn, or Fe) were supported on reduced graphene oxide (rGO) and silica template (ST). A modified solution method coupled with the thiourea-phosphate-assisted solvothermal route was used for the preparation process. NiS–ZnS/rGO-ST/NF showed a low overpotential of 161 mV at 10 mA cm^-² for the HER. Further, for OER, the overpotential of 324 mV was obtained by NiS–FeSO₄/rGO-ST/NF at 50 mA cm^-². Moreover, all studied electrocatalysts showed negligible deterioration for the 60 h stability test, indicating outstanding HER and OER performance. The water splitting system composed of NiS–ZnS/rGO-ST/NF//NiS–FeSO₄/rGO-ST/NF electrodes had good performance with ∼1.77 V at 10 mA cm^-^2, which was close to that of a noble metal-based Pt/C/NF//RuO₂/NF water splitting system (1.75 V at 10 mA cm^-²). The excellent electrocatalytic activity of the resulting electrocatalysts was mainly due to the enhancement of both mass and charge transfer for HER and OER, which promotes the interaction between water molecules and electrocatalyst reactive sites. This study provides an exclusive approach to designing high-performance and stable electrocatalysts for HER and OER.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112906"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211928","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":"Sodium ethoxide treatment induced enrichen nitrogen vacancies on g-C3N4 for efficient photocatalytic CO2 reduction and Cr(VI) removal","authors":"Penghui Yang,&nbsp;Jiaqi Yang,&nbsp;Xinyu Zeng,&nbsp;Huajian Yang,&nbsp;Junbo Zhong","doi":"10.1016/j.jpcs.2025.112908","DOIUrl":"10.1016/j.jpcs.2025.112908","url":null,"abstract":"<div><div>Introducing vacancies on g-C₃N₄ is considered an effective strategy to enhance photocatalytic performance. However, introducing vacancies by a mild and efficient approach still remains a significant challenge in the field of photocatalysis. In this study, g-C₃N₄ photocatalysts with enriched nitrogen vacancies were successfully prepared by sodium ethoxide treatment at room temperature. X-ray photoelectron spectroscopy (XPS) and low temperature electron paramagnetic resonance (EPR) demonstrate that the treatment with sodium ethoxide successfully introduces nitrogen vacancies. The photoelectrochemical experiments confirm that introduction of nitrogen vacancies modulates the band structure of g-C₃N₄ and accelerates the separation of photogenerated charges. Additionally, nitrogen vacancies serve as effective active sites and adsorption centers for target molecules, facilitating the reaction of electrons with the target molecules and significantly boosting photocatalytic efficiency. Under irradiation of a 300 W xenon lamp, the 9GCN sample treated by 9 g of sodium ethoxide exhibits the best photocatalytic performance. The conversion rate of CO₂ into CO and CH₄ is 3.07 and 8.58 times higher than that on the single sample, respectively. <em>In situ</em> diffuse reflectance Fourier-transform infrared spectroscopy (DRIFTS) confirms the dynamic process of CO₂ conversion to CO and CH₄. Additionally, result of photocatalytic reduction of Cr(VI) further confirms the versatility of the photocatalyst. This work provides a practical pathway for the development of defective g-C₃N₄ photocatalysts for applications in carbon cycling and environmental purification.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112908"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212513","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 Zn0·4Ni0·6O nanoflakes: A dual-function material for supercapacitor and oxygen evolution reaction","authors":"Sabiya S. Bagwan ,&nbsp;Maqsood R. Waikar ,&nbsp;Azeem M. Bagwan ,&nbsp;Mayuri G. Magdum ,&nbsp;Satyashila D. Ghongade ,&nbsp;Shital J. Shinde ,&nbsp;Aniket R. Sonkawade ,&nbsp;Annasaheb V. Moholkar ,&nbsp;Hemraj M. Yadav ,&nbsp;Rajendra G. Sonkawade","doi":"10.1016/j.jpcs.2025.112907","DOIUrl":"10.1016/j.jpcs.2025.112907","url":null,"abstract":"<div><div>Binder-free Zn₀_·₄Ni₀_·₆O (ZNO) nanoflakes (NFs) were directly grown on stainless steel (SS) via a hydrothermal method, creating a dual-functional electrode for both supercapacitors and water splitting. Structural and compositional analyses verified the formation of cubic ZNO, while morphological analysis confirmed nanoflake morphology. X-ray Photoelectron Spectroscopy (XPS) analysis was performed to gain deeper insight into the surface composition and oxidation states of ZNO-NFs. The energy storage and conversion were evaluated by electrochemical performance in different electrolytes. The ZNO-NFs electrode exhibited a specific capacitance (Cs) in 1 M KOH was 502 F g⁻¹ at 1 mA g⁻¹ with excellent cycling stability of 91 %. The asymmetric liquid state system using ZNO-NFs-SS//AC-SS configuration achieved a specific capacitance (Cs) of 44.82 F g⁻¹ at 1 mA g⁻¹. It also exhibited an energy density (Ed) of 13.33 W kg⁻¹ and a power density (Pd) of 615.38 Wh kg⁻¹, maintaining 83 % of its performance after 2000 CV cycles, indicating excellent stability. The ZNO-NFs electrodes exhibited remarkable electrocatalytic properties, including the lowest overpotential (303 mV), a suitable Tafel slope (70 mV dec⁻¹), and the highest electrochemical active surface area (33.75 cm²) at 10 mV s⁻¹ in 1 M KOH. Consequently, the superior performance with high durability of ZNO-NFs in a 1 M KOH electrolyte makes them ideal candidates for powering efficient electrodes in energy storage and water-splitting applications.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112907"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242631","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":"B4C4 nanocluster ring for toxic heavy metal ion adsorption from wastewater: A DFT study","authors":"Fatin Hasnat Shihab,&nbsp;Mohsina Faria Mou,&nbsp;Debashis Roy,&nbsp;Abdullah Al Roman,&nbsp;Mohammad Tanvir Ahmed","doi":"10.1016/j.jpcs.2025.112896","DOIUrl":"10.1016/j.jpcs.2025.112896","url":null,"abstract":"<div><div>The stable and relaxed geometry of the novel B₄C₄ nanocluster ring has been obtained via density functional theory calculation. The adsorption of several toxic heavy metal ions (HMIs) As(iii), Zn(ii), Cd(ii), and Pb(ii) on B₄C₄ is studied. Up to two HMIs were adsorbed successfully in each nanocluster. The variation in geometrical, electronic, and optical properties due to metal ion adsorption has been observed to understand the HMI-B₄C₄ interactions. The HMI adsorption results in significant structural deformation of the nanocluster. As(iii) ion has showed the maximum interaction whereas Pb(ii) revealed the minimum attraction to the nanocluster with the adsorption energies of −10.62 and −0.72 eV. The nanocluster possessed an energy gap of 2.21 eV which changed drastically due to the adsorption of HMIs. The interaction of As(iii), Zn(ii), and Cd(ii) ions with B₄C₄ is partially covalent whereas the weak van der Waals interaction exists between the nanocluster and Pb(ii) ions. Overall observed characteristics make the B₄C₄ nanocluster a potential candidate for HMI removal application from wastewater.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112896"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203344","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":"Development of AgFe2O4/rGO nanohybrid as superior electrode via hydrothermal method for supercapacitor applications","authors":"Zahida Bibi ,&nbsp;A. Qadoos ,&nbsp;Areeba Sajjad ,&nbsp;Meznah M. Alanazi ,&nbsp;Shaimaa A.M. Abdelmohsen ,&nbsp;Ahmed Hussain Jawhari ,&nbsp;Muhammad Faizan ,&nbsp;Muhammad Saleem","doi":"10.1016/j.jpcs.2025.112910","DOIUrl":"10.1016/j.jpcs.2025.112910","url":null,"abstract":"<div><div>Energy is basic need of this modern era, and supercapacitors are well-known energy storage devices to fulfill this energy demand. The 90 % efficiency of SC_s relay on its electrode material. Here, a novel and cost effective AgFe₂O₄/rGO nanohybrid electrode is fabricated via hydrothermal route for SC_s.It is characterized via using several physical analytical techniques to examine the purity, crystallinity and functionality. The electrochemical potential of generated AgFe₂O₄/rGO electrode material was evaluated in basic media (KOH) using a three-electrode configuration. In electrochemical testing, GCD measurements demonstrated the maximum C_s of 1158 F/g for AgFe₂O₄/rGO at current density (C_d) of 1.0 A/g. The AgFe₂O₄/rGO depicted energy density (E_d) of 51.10 Wh/kg and had good power density (P_d) of 281.88 W/kg. This study reveals that incorporating of rGO nanosheets into AgFe₂O₄ enhances the charge migration efficiency by offering convenient channel for passage of electrolytic ions. Hence, all these results exhibit that the produced AgFe₂O₄/rGO nanohybrid occurs viable choice for use in energy conversion and storage devices.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112910"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242633","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":"N-rich porous organic polymer for the efficient removal of aqueous La3+ and associated interaction mechanism","authors":"Yufei Wang ,&nbsp;Jingwei Wang ,&nbsp;Fu Zhao ,&nbsp;Dongwei Ji ,&nbsp;Chenxi He ,&nbsp;Pei Han ,&nbsp;Hongxia Li ,&nbsp;Yong Li ,&nbsp;Peiliang Guo","doi":"10.1016/j.jpcs.2025.112903","DOIUrl":"10.1016/j.jpcs.2025.112903","url":null,"abstract":"<div><div>N-rich porous organic polymers have shown promising application prospects in ion adsorption in the aqueous phase. Herein, an N-rich porous organic polymer (POP–N) was prepared via a one-step reaction and used as an adsorbent for the removal of La³⁺ from water. The interaction mechanism between POP-N and La³⁺ was revealed via spectroscopic analyses, nitrogen adsorption–desorption and adsorption model fitting. The results show that POP-N adsorbed 99 % of La³⁺ within 10 min. This was attributed to the abundant micropores and mesopores in POP-N and the presence of pyridine-N groups that strongly coordinated with La³⁺ within the pore structure. La³⁺ was found to rapidly enter POP-N, interact with adsorption sites in pores, and become enriched. This study is a valuable reference for developing efficient adsorbents based on N-rich porous organic polymers.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112903"},"PeriodicalIF":4.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203339","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":"Synthesis of Putranjiva seed-derived double activated carbon and its composite with NiO for enhanced performance of supercapacitor","authors":"Rita Kumari ,&nbsp;Vinamrita Singh ,&nbsp;Chhaya Ravi Kant","doi":"10.1016/j.jpcs.2025.112894","DOIUrl":"10.1016/j.jpcs.2025.112894","url":null,"abstract":"<div><div>The work presents a cost-effective, design strategy for developing eco-friendly, advanced electrode materials for sustainable energy storage systems. Putranjiva seed (biomass precursor)-derived carbon was activated two times (doubly activated) in a CO₂-inert atmosphere yielding a porous texture with enhanced surface area, and superior electrochemical properties. A double-activated carbon (DAC)/nickel oxide (NiO) composite, synthesized using a hydrothermal technique, demonstrated exceptional performance attaining a prominent specific capacitance of 641.98 F/g at 1.0 A/g. The enhanced conductivity, structural features, and surface area of 1322.27 m²/g make DAC@NiO an excellent candidate for high-performance supercapacitors. Furthermore, an asymmetric supercapacitor (ASC) employing DAC@NiO composite and DAC as a cathode and anode, respectively, delivered an impressive energy density and power density of 11.42 Wh/kg and 302.70 W/kg, respectively, exceeding several reported carbon-based ASCs. The device shows excellent cyclability with capacitance retention of 86.40 % and a Columbic efficiency of 91.20 % after 5000 charging/discharging cycles. The work endorses DAC@NiO composites as potentially valuable for advancing high-performance, scalable energy storage devices, and flagging future innovations in sustainable manufacturing.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112894"},"PeriodicalIF":4.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203340","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 the battery-like pseudocapacitive behavior of bismuth ferrite-N doped rGO composites","authors":"U Harini ,&nbsp;Caroline Ponraj ,&nbsp;Sujoy Sarkar","doi":"10.1016/j.jpcs.2025.112905","DOIUrl":"10.1016/j.jpcs.2025.112905","url":null,"abstract":"<div><div>Perovskite bismuth ferrite (BiFeO₃) has emerged as a promising material for battery-supercapacitor hybrid (BSH) devices, owing to the redox activity of Bi³⁺ and Fe³⁺ ions. Integrating BiFeO₃ with two-dimensional (2D) materials effectively mitigates phase decomposition during charge-discharge cycles, thereby improving both performance and stability. In the present study, BiFeO₃/N-rGO composite is prepared using a one-pot hydrothermal method and is used as the electrode material to understand its energy storage behavior. The composite exhibited a crystallite size of 21 nm with suppression of Raman vibrational modes of BFO (4A₁+9E) with I_d/I_g ratio of 0.97, indicating successive anchoring of BFO onto the sheets of N-rGO exhibiting particle-on-a-sheet morphology. Subsequent investigation into the composite material's potential to store charge reveals that it behaves like a battery-like pseudo-capacitor, displaying a specific capacitance of 186, 328, and 440 Fg^-1 (in 0.5 M KOH, 1 M KOH, and 2 M KOH, respectively) at a current density of 1 Ag^-1 with a capacity value reaching up to 45, 65 mAhg⁻¹ (1 M KOH and 2 M KOH, respectively). Whereas the symmetric device constructed has an increase in power density from 591 to 2620 WKg^-1 with capacitance reaching up to 35 Fg⁻¹. During cyclic stability testing over 1500 cycles, the material retained 24 % of its initial capacitance and exhibited a coulombic efficiency of 51 %. Further, results from cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confirm that the material possesses a redox behavior indicating a strong faradaic/diffusion-controlled process, indicating both supercapacitor and battery-like behavior. The results demonstrate that it could be widely applied to establish a supercapattery device which will offer a promising alternative to traditional batteries for sustainable and high-performance applications.</div></div>","PeriodicalId":16811,"journal":{"name":"Journal of Physics and Chemistry of Solids","volume":"207 ","pages":"Article 112905"},"PeriodicalIF":4.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223364","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}