Materials for Renewable and Sustainable Energy最新文献

{"title":"Holmium-induced lattice engineering of SmFeO3 perovskite nanoparticles for high-performance symmetric supercapacitors in redox-active KI/KOH electrolyte","authors":"M. M. Arman,&nbsp;Mai M. El-Masry,&nbsp;Ahmed M. Selim,&nbsp;Fatma M. Ahmed","doi":"10.1007/s40243-026-00390-6","DOIUrl":"10.1007/s40243-026-00390-6","url":null,"abstract":"<div><p>This study presents Ho-doped SmFeO₃ nanoparticles synthesized via citrate combustion to enhance supercapacitor performance through lattice engineering. Characterization confirmed that Ho³⁺ substitution induces compressive microstrain and a refined nanoscale structure. Electrochemical evaluations in a symmetric two-electrode configuration utilizing a KI + KOH redox-active electrolyte demonstrated a significant enhancement in charge storage. Notably, the optimized Sm_0.9Ho_0.1FeO₃ electrode exhibited a superior specific capacitance of 115 F g⁻¹ at 1 A g⁻¹, compared to 62.4 F g⁻¹ for the pristine sample. This improvement is attributed to the synergistic effect of Ho-induced lattice strain, which increases the number of active sites and the faradaic contribution of the I⁻⁻/I₃⁻ redox couple. The device delivered a maximum energy density of 23 Wh kg⁻¹ at a power density of 2400 W kg⁻¹. Furthermore, the Sm_0.9Ho_0.1FeO₃ electrode exhibited exceptional cycling durability, with 102% capacitance retention after 10,000 cycles, owing to improved ionic transport and structural stability. This work provides new insights into lattice engineering and the integration of redox electrolytes to advance perovskite-based supercapacitors.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00390-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic pore-network evolution in mesoporous CMK3@S cathodes governing sulfur conversion and electrochemical accessibility","authors":"Hamza Farhan Abu Owida,&nbsp;Suleiman Mohammad,&nbsp;Asokan Vasudevan,&nbsp;Soumya V. Menon,&nbsp;Subhashree Ray,&nbsp;Rahul Saxena,&nbsp;Monika Verma,&nbsp;Sardor Sabirov,&nbsp;Abduvali Sottarov,&nbsp;Amirali Nikpendar","doi":"10.1007/s40243-026-00395-1","DOIUrl":"10.1007/s40243-026-00395-1","url":null,"abstract":"<div><p>Mesoporous carbon architectures provide high surface accessibility and interconnected transport pathways for sulfur-based energy-storage materials. However, the initial pore structure may evolve during electrochemical operation due to solid-product formation, affecting ionic transport and sulfur utilization. In this study, the dynamic structure–transport–performance relationships governing sulfur conversion in mesoporous CMK3@S cathodes for potassium–sulfur batteries are investigated using a coupled porous-electrode model. The model framework describes the coupled evolution of K⁺ transport, polysulfide redistribution, sulfur-conversion kinetics, K₂S precipitation, connected porosity, tortuosity, interfacial accessibility, and spatial reaction redistribution. The model predictions were quantitatively evaluated against reported electrochemical characteristics and independently measured transport-related properties, showing deviations within an acceptable range for electrode-scale simulations. The validated framework predicts a nonlinear transition from distributed K₂S accommodation to connectivity-sensitive pore-network obstruction during discharge. According to the simulations, moderate precipitation can be accommodated by the mesoporous framework with limited transport penalty, whereas deposition near critical transport pathways results in accelerated loss of ionic accessibility. At the simulated advanced-discharge condition, the predicted mean precipitation-blocking index (PBI) reaches 0.69, accompanied by a transport-limitation index (TLI) of 0.74, a reaction uniformity index (RUI) of 0.49, an active-depth utilization (ADU) of 58.7%, and an accessible-capacity loss (ACL) of 28.7%. Sensitivity and uncertainty analyses based on the model further identify precipitation kinetics, initial pore accessibility, tortuosity, and ionic diffusivity as key parameters controlling structural–electrochemical evolution. These results suggest that maintaining connected transport pathways during solid-product formation is critical for improving the electrochemical accessibility of mesoporous sulfur cathodes and provide a mechanistic modeling perspective for the design of precipitation-tolerant carbon–sulfur electrode architectures.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00395-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149234521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of chitosan–sulfonated polystyrene–sulfonated nanosilica nanocomposite proton exchange membranes for direct methanol fuel cells","authors":"Shayan Navabi,&nbsp;Mahdi Tohidian","doi":"10.1007/s40243-026-00388-0","DOIUrl":"10.1007/s40243-026-00388-0","url":null,"abstract":"<div><p>In this study, proton exchange membranes (PEMs) based on chitosan (CS), sulfonated polystyrene (SPS), and pristine or modified nanosilica were fabricated for direct methanol fuel cell (DMFC) applications. Membranes containing different SPS contents were prepared, and polystyrene was sulfonated to an optimal degree of sulfonation determined by evaluating its hydrolytic stability. Proton conductivity and methanol permeability were measured to determine the membrane selectivity parameter (defined as the ratio of proton conductivity to methanol permeability), which was used to optimize the CS/SPS blend composition to achieve an optimal balance between proton conductivity and methanol crossover resistance. Among the prepared membranes, the membrane containing 40 wt% SPS exhibited the highest selectivity parameter (39,908 S s cm^− 3) and was therefore identified as the optimal composition. This was attributed to strong acid–base interactions between the amino groups of chitosan and the sulfonic acid groups of SPS, which enhance proton conductivity and reduce methanol crossover. To improve membrane performance, nanocomposite membranes containing 2 wt% silica nanoparticles (SiO₂) or sulfonated silica nanoparticles (S-SiO₂) were separately prepared using the optimal chitosan/SPS blend. The incorporation of SPS increased the glass transition temperature and decreased the crystallinity of the chitosan matrix due to electrostatic interactions between the –SO₃H groups of SPS and the –NH₂ groups of chitosan. Furthermore, the nanocomposite membranes exhibited higher proton conductivity and lower methanol permeability compared with the optimal blend membrane. The S-SiO₂ nanoparticles provide additional –SO₃H groups that expand proton transport pathways while simultaneously reducing methanol permeability via tortuous diffusion pathways. The membrane containing S-SiO₂ nanoparticles showed the highest selectivity (54,010 S s cm^− 3), representing a 35% improvement over the optimal blend membrane, indicating its strong potential as a cost-effective alternative proton exchange membrane for DMFC applications. </p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p> The graphical abstract depicts proton transport within the chitosan–sulfonated polystyrene–sulfonated nanosilica nanocomposite membrane. Acid–base interactions between chitosan (–NH₂) and sulfonated components (–SO₃H) form ionic pairs (–NH₃⁺/–SO₃⁻), creating interconnected ionic domains. Hydrophilic groups enhance water retention and enable proton conduction via vehicle (H₃O⁺ diffusion) and Grotthuss (proton hopping) mechanisms, while restricting methanol crossover.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00388-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance parameter extraction for solid oxide fuel cells under dynamic conditions using the griffon vulture optimization algorithm","authors":"Manish Kumar Singla,&nbsp;Ramesh Kumar,&nbsp;Pradeep Jangir,&nbsp; Arpita,&nbsp;Gagandeep Berar","doi":"10.1007/s40243-026-00384-4","DOIUrl":"10.1007/s40243-026-00384-4","url":null,"abstract":"<div><p>Solid oxide fuel cells (SOFCs) offer high energy conversion efficiency alongside excellent fuel flexibility. However, their complex underlying electrochemical processes require successful parameter identification so that modeling and control can be achieved. Traditional optimization algorithms on the other hand often face limitations in this problem, such as premature convergence to suboptimal solutions, or an inability to explore the entire solution space. In this manuscript a new metaheuristic based on vulture foraging is derived i.e., Griffon Vulture Optimization Algorithm (GVOA). It is superior in terms of accuracy, stability and computational speed in case of complicated optimization, such as SOFC parameter identification. GVOA’s guided convergence and controlled diversity provide a theoretically sound and practical solution. Because of its efficiency, it can be used for real-time modeling and adaptive control. The GVOA algorithm was successfully used to estimate seven nonlinear model parameters of a simplified SOFC model in ten different operating conditions (varying temperature and pressure), based on simulated V-I data. In comparison with 9 well-known metaheuristic algorithms, such as BKA, AO, LSO, and PEOA, GVOA always gave the lowest minimum mean squared error (MSE) results under any temperature and pressure conditions. Furthermore, it occupied the highest rank in the Friedman test in all situations and had the quickest convergence behaviour. These results validate GVOA’s superior accuracy, stability and speed with respect to the challenging task of identification of SOFC parameters. Theoretically, this is evidence in support of the efficacy of its combination of guided convergence and controlled diversity, and, practically, is a reliable method for modeling and adaptive control of fuel cell systems. Upcoming research will be spread to investigational validation and application to other electrochemical systems.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00384-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vacancy-ordered A2RuBr6 double perovskites as dual-functional visible-light photocatalysts and half-metallic spintronic materials","authors":"Mohamed El Amine El Goutni,&nbsp;Danish Abdullah,&nbsp;Mohammed Batouche,&nbsp;Hela Ferjani,&nbsp;Taieb Seddik,&nbsp;Aarif Ul Islam Shah,&nbsp;Edson L. Meyer","doi":"10.1007/s40243-026-00385-3","DOIUrl":"10.1007/s40243-026-00385-3","url":null,"abstract":"<div><p>This study explores the vacancy-ordered double perovskites A₂RuBr₆ (A = Cs, Rb, K) as novel photocatalysts and spintronic materials, addressing the global climate crisis through sustainable oxidation processes. Employing density functional theory (DFT) with the Wu-Cohen Generalized Gradient Approximation (GGA-WC), Tran-Blaha modified Becke-Johnson (TB-mBJ) potential, and spin-orbit coupling (SOC) within the WIEN2k package, we investigate their structural, electronic, optical, and mechanical properties. Structural analyses reveal a stable cubic Fm-3 m lattice with lattice constants of 10.23–10.58 Å, bulk moduli of 32.06–37.46 GPa, and negative formation energies (–2.61 to − 3.57 eV), confirming thermodynamic and mechanical stability. Electronic properties exhibit direct band gaps of 1.50–1.68 eV (λ ≈ 738–826 nm), enabling efficient absorption deep into the visible-red region and covering ~ 30–35% of the solar spectrum, significantly higher than TiO₂ (Eg ≈ 3.2 eV, λ ≈ 388 nm, ~ 5%) and CdS (Eg ≈ 2.4 eV, λ ≈ 517 nm, ~ 17%). Half-metallic ferromagnetic behavior driven by Ru 4d electrons enhances spin-polarized transport. Optical characteristics include high absorption coefficients (4.25–7.34 × 10⁵ cm⁻¹), low reflectivity (10–14%), and excitonic binding energies of 139–167 meV, promoting efficient charge separation. Band edge positions (EVB: 1.69–1.75 eV; ECB: 0.01–0.25 eV) favor water oxidation, surpassing TiO₂, CdS, and WO₃ in visible-light responsiveness and spin selectivity, though reduction is limited by positive ECB. Mechanical ductility (B/G &gt; 1.88) supports durability. Future research on stability enhancements and experimental validation is essential to realize A₂RuBr₆’s potential in sustainable energy applications.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00385-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-stoichiometric Mg-Ni composites for hydrogen storage: role of in-situ Mg2Ni formation in enhancing hydrogen sorption performance","authors":"Babak O’. Shahreza,&nbsp;Julia Ivanisenko,&nbsp;Fjodor Sergejev,&nbsp;Hosseinali Omranpour,&nbsp;Jacques Huot","doi":"10.1007/s40243-026-00378-2","DOIUrl":"10.1007/s40243-026-00378-2","url":null,"abstract":"<div><p>Magnesium-based alloys are promising hydrogen storage materials due to their high capacity but suffer from slow hydrogenation kinetics and high operating temperatures. While high-pressure torsion (HPT) enhances kinetics through microstructural refinement, and nickel addition provides catalytic effects, their combined influence on hydrogen storage performance remains insufficiently characterized. This work investigates Mg-Ni composites with variable Ni content (2–16 at%). After consolidating the powders by HPT and activating them in a Sievert apparatus, in-situ differential scanning calorimetry (DSC) was used to track phase evolution and extract thermodynamic parameters. DSC thermal cycling under hydrogen promoted the in-situ solid-state synthesis of Mg₂Ni from the elemental mixtures. Activation energy analysis revealed systematic reduction with increasing Ni content. While HPT enhanced initial hydrogenation kinetics, thermodynamic parameters (enthalpy, entropy) showed no systematic variation across HPT conditions, as high thermal cycling temperatures (up to 450 °C) led to the annealing of HPT-induced structural defects. The findings demonstrate that compositional tuning through in-situ Mg₂Ni formation dominates hydrogen storage performance, with HPT serving primarily as an initial activation aid.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00378-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unlocking the potential of the magnesium-based electrode materials for supercapacitive energy storage","authors":"Parisa Salarizadeh,&nbsp;Mohammad Bagher Askari","doi":"10.1007/s40243-026-00383-5","DOIUrl":"10.1007/s40243-026-00383-5","url":null,"abstract":"<div><p>This review provides a critical and forward-looking analysis of recent advancements in magnesium-based electrode materials for supercapacitors, a class of materials distinguished by their unique combination of high theoretical capacity, divalent charge carrier (Mg²⁺), and sustainability profile. Moving beyond a simple summary, the work systematically deconstructs the electrochemical performance and charge storage mechanisms of key material families, including oxides (e.g., MgCo₂O₄, MgO), hydroxides, sulfides, and hybrid composites by linking specific structural modifications (nanostructuring, doping, composite formation) to their resultant impact on conductivity, stability, and capacitance. A central and unique contribution of this review is its structured critical evaluation, which clearly delineates the persistent challenges of poor intrinsic conductivity and ion diffusion kinetics, and their direct consequences on device-level performance. Furthermore, the review merges current literature into actionable, strategic research pathways. It prioritizes advanced material engineering, such as the design of conductive 3D heterostructures and defect-controlled doping, to chart a clear course for overcoming existing limitations. Ultimately, this work positions magnesium-based electrodes not merely as alternatives but as a viable and sustainable platform for next-generation energy storage, provided these focused research directions are pursued.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00383-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148987118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intermediate-temperature molten sodium batteries based on NaI–AlCl3 catholytes and NASICON solid electrolytes","authors":"Benedetta Brancato,&nbsp;Leone Frusteri,&nbsp;Ivan Mastronardo,&nbsp;Claudia D’Urso","doi":"10.1007/s40243-026-00381-7","DOIUrl":"10.1007/s40243-026-00381-7","url":null,"abstract":"<div><p>The rapid expansion of renewable energy technologies requires the development of efficient and reliable stationary energy storage systems. Among emerging alternatives to lithium-ion batteries, molten sodium batteries represent a promising solution due to the abundance of sodium resources, intrinsic safety, and favorable electrochemical characteristics. However, conventional sodium–sulfur and sodium–metal halide batteries operate at elevated temperatures (typically above 270 °C), which increases system complexity, materials degradation, and thermal management requirements. In this work, we investigate the use of NaI–AlCl₃ eutectic mixtures as redox-active catholytes for molten sodium batteries operating at intermediate temperatures. A composition of 60:40 mol % NaI–AlCl₃ was synthesized and integrated into planar laboratory cells employing NASICON solid electrolytes. The electrochemical behavior of the system was evaluated at 150 °C using cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge–discharge testing. The selected eutectic composition exhibited stable molten behavior and reversible electrochemical activity associated with the iodide/triiodide redox couple. Initial impedance measurements revealed a progressive decrease in interfacial resistance during the first hours of operation, attributed to improved wetting of the catholyte within the carbon felt current collector. Galvanostatic cycling performed at a current density of 1.4 mA cm showed stable voltage profiles with an average cell voltage of approximately 3.24 V. The cell maintained an energy efficiency above 95% over 50 cycles, corresponding to more than 1200 h of operation, with negligible voltage drift. These results demonstrate that NaI–AlCl⁻²₃ molten catholytes enable stable sodium battery operation at significantly reduced temperatures compared to conventional molten salt systems. The combination of halide-based eutectic catholytes and NASICON solid electrolytes represents a promising pathway toward safer and more cost-effective stationary energy storage technologies.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00381-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A nanogenerator review of current trends, advancement and future directions","authors":"Arguine Tes Raj,&nbsp;Binola K Jebalin I. V.,&nbsp;Ancy Michel,&nbsp;Angelin Delighta .A,&nbsp;Maria E. Messing,&nbsp;D. Nirmal","doi":"10.1007/s40243-026-00379-1","DOIUrl":"10.1007/s40243-026-00379-1","url":null,"abstract":"<div><p>Nanogenerators are significant in the era of the emerging biodegradable energy harvesting systems, Internet of Things (IoT) application and wearable gadgets, where battery replacement and external power supply are challenging. The rise in energy demand coupled with concerns regarding environmental contamination caused by fossil fuel-based energy generation has spurred research and development of novel sustainable methods for energy harvesting. Nanogenerators increase the operational life of IoT devices by providing sustainable power source. Various nanogenerators like the piezoelectric nanogenerator, triboelectric nanogenerator, thermoelectric nanogenerator, pyroelectric nanogenerator and hybrid nanogenerator are used for sophisticated detection of systems in various fields that are small, inexpensive and environmentally benign. Generally, the choice of a nanogenerator depends on its intended application and the environment in which it will operate. Due to high output and different applications in different conditions and frequency ranges, triboelectric nanogenerators are extensively investigated. Piezoelectric nanogenerators have properties that are well-suited for wearable electronics and environmental sensing. Various studies have reported nanogenerators with high open-circuit voltages of 18 kV, 10 kV, 753 V and 578 V. and short-circuit currents of 348, 320 and 63.3 μA. Nanogenerator also have high operational lifetimes of 3,960,000, 1,260,000, 860,000 and 90,000 cycles. This review presents a comprehensive analysis of the state-of-the-art in green energy technologies focusing on the cutting-edge advancements in nanogenerator principles, simulations, material selection and applications in the emerging field of nanoscale energy conversion.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 2","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00379-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148281771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lead-free K2MnTlH6 double perovskite solar cells with WS2/CBTS interfaces achieving > 29% efficiency: a comprehensive SCAPS-1D simulation study","authors":"Okba Saidani,&nbsp;Abderrahim Yousfi,&nbsp;Mahmood M. S. Abdullah,&nbsp;Hamad A. Al-Lohedan,&nbsp;Samir Benaniba,&nbsp;Rabah Boubaaya,&nbsp;Mokhtar Djendel,&nbsp;Abdelhalim Brahimi,&nbsp;Mekuria Tsegaye Alemu","doi":"10.1007/s40243-026-00382-6","DOIUrl":"10.1007/s40243-026-00382-6","url":null,"abstract":"<div><p>This study investigates the double-perovskite hydride K₂MnTlH₆ as a promising and previously unexplored absorber for perovskite solar cells (PSCs) using the SCAPS-1D simulator. Key parameters including the electron-transport layer (WS₂), hole-transport layer (CBTS), absorber thickness, defect density, and doping concentration are systematically optimized. Results show that WS₂ and CBTS provide favorable band alignment and efficient carrier extraction, enhancing the open-circuit voltage (V_OC), short-circuit current density (J_SC), fill factor (FF), and overall power conversion efficiency (PCE). Interfacial defect densities at the WS₂/K₂MnTlH₆ and K₂MnTlH₆/CBTS interfaces are analyzed to elucidate recombination and charge-transfer behavior. Additional evaluations of series resistance, shunt resistance, and operating temperature assess device performance under realistic conditions. The optimized configuration achieves a V_OC of 1.13 V, J_SC of 34.74 mA/cm², FF of 83.56%, and a PCE of 29.41%, confirming K₂MnTlH₆ as a strong candidate for next-generation, environmentally friendly PSCs.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"15 3","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-026-00382-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}