Fuel最新文献

{"title":"Characteristics of antioxidant temperature-sensitive hydrogel inhibiting coal spontaneous combustion","authors":"Wang Caiping ,&nbsp;Duan Xiadan ,&nbsp;Deng Jun ,&nbsp;Bai Zujin ,&nbsp;Chen Weile ,&nbsp;Deng Yin ,&nbsp;Qu Gaoyang","doi":"10.1016/j.fuel.2025.135089","DOIUrl":"10.1016/j.fuel.2025.135089","url":null,"abstract":"<div><div>Improving the efficiency of inhibition of coal spontaneous combustion (CSC) by inhibitor can efficiently reduce the occurrence of gas explosions, water, soil resources and environmental pollution. In this study, melatonin (MT), a potent scavenger of coal activated free radicals, was integrated into a temperature-sensitive hydrogel (A₅₀) at specific ratios (MT:A₅₀ = a:b), further enabling the preparation of antioxidant temperature-sensitive hydrogel inhibited coal (In-coal (MT:A₅₀ = a:b)). The retardation and scavenging ability of the In-coal (MT:A₅₀ = a:b) on coal oxygen-reactive radicals was analysed by electron spin resonance, and the preventive effect on the overall oxidation process was analysed by thermogravimetric experiments. It was shown that the In-coal (MT:A₅₀ = a:b) was able to maintain the coal in a low-oxygen state at low temperatures, causing a large reduction in the amount and type of stabilising radicals in the inhibited coal within 90–150 °C. When MT dominates in In-coal(MT:A₅₀ = a:b), the free radical scavenging ability of MT in the low temperature oxidation stage allows the In-coal(MT:A₅₀ = a:b) to function mainly in the initial mass loss stage, extending the characteristic temperature and average apparent activation energy (<span><math><mrow><mover><mrow><msub><mi>E</mi><mtext>a</mtext></msub></mrow><mrow><mo>¯</mo></mrow></mover></mrow></math></span>) of the In-coal(A₅₀), in which In-coal(MT:A₅₀ = 3:1) has the optimal preventing effect in this stage. Compared with the raw coal, it can extend the maximum water loss rate temperature by 10.46 °C and increasing the <span><math><mrow><mover><mrow><msub><mi>E</mi><mtext>a</mtext></msub></mrow><mrow><mo>¯</mo></mrow></mover></mrow></math></span> by 114.99 kJ/mol. The slow oxidation stage reduces the contact between the coal and oxygen due to the oxygen-depleted environment created by the gel phase transition, and under the enhancing effect of MT in removing coal reactive free radicals, the dry cracking temperature of the In-coal(MT:A₅₀ = a:b) can be extended by up to 18.55 °C and the <span><math><mrow><mover><mrow><msub><mi>E</mi><mtext>a</mtext></msub></mrow><mrow><mo>¯</mo></mrow></mover></mrow></math></span> can be increased by a factor of up to 1.40. In terms of the overall combustibility index of the coal, the addition of MT reduces the A₅₀ as a high molecular material pyrolysis leads to high combustion properties and reduces the overall combustibility of the In-coal(MT:A₅₀ = a:b). The results provide important theoretical and engineering support for the effective prevention and control of CSC.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135089"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen evolution risk and sustainable control strategy for industrial aluminum alloy dust in wet dust collectors","authors":"Tengteng Hao ,&nbsp;Kaili Xu ,&nbsp;Xin Zheng ,&nbsp;Jishuo Li ,&nbsp;Ruiqi Zhang ,&nbsp;Yuyuan Zhang ,&nbsp;Zhenhua Liu","doi":"10.1016/j.fuel.2025.135084","DOIUrl":"10.1016/j.fuel.2025.135084","url":null,"abstract":"<div><div>The management of aluminium-silicon alloy polishing dust in wet dust collection systems is crucial for addressing hydrogen evolution risks that lead to potential explosion hazards and impact the efficiency of hydrogen recovery during dust recycling. This study assesses the explosion risks associated with hydrogen evolution from aluminum-silicon dust during hydrolysis and investigates the efficacy of expired <em>vitamin C Yinqiao</em> tablets (EVCTs) as sustainable hydrogen inhibitors. Experimental results show that elevated temperatures and negative pressure intensify hydrogen generation, creating substantial safety risks during storage and operations. At a concentration of 500 mg/L, EVCTs achieve a hydrogen inhibition efficiency of 94.43 %, effectively stabilizing hydrogen evolution suppression even under varying environmental conditions. Molecular simulations indicate that the active components of EVCTs interact with the aluminium-silicon surface via heterocyclic π-electrons and heteroatoms (O and N atoms), forming a stable adsorption layer. This layer not only inhibits hydrogen evolution but also preserves the structural integrity of the dust particles, facilitating safer handling and storage. By demonstrating the dual benefits of explosion risk mitigation and waste pharmaceutical recycling, this study provides an innovative approach to enhancing the safety of industrial waste dust management and the resource efficiency of its recycling.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135084"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Road performance and chemical evolution of aged asphalt subjected to intense ultraviolet radiation and large temperature fluctuations","authors":"Zewen He ,&nbsp;Jiuguang Geng ,&nbsp;Wenhui Zhao ,&nbsp;Jianwei Liu ,&nbsp;Cong Qi ,&nbsp;Ruofei Qi ,&nbsp;Lu Huang","doi":"10.1016/j.fuel.2025.135104","DOIUrl":"10.1016/j.fuel.2025.135104","url":null,"abstract":"<div><div>The primary factors contributing to asphalt pavement deterioration in northwest China are intense ultraviolet (UV) radiation and significant temperature fluctuations, posing challenges for pavement durability. A UV-freeze–thaw coupling aging simulation method tailored to the climate of northwest region were proposed to investigate the degradation mechanisms of asphalt pavements. The conditions were determined that ultraviolet irradiation duration ranged from 24 h to 96 h at 70℃, and the freeze −thaw cycle consisted of 10 h freezing at −18℃ and 14 h thawing at 30℃. Subsequently, the physical, rheological, and road performance characteristics of asphalt and mixtures were then analyzed, followed by chemical analysis and Pearson correlation to explore the aging mechanisms. Results indicated that, coupled aging induced more severe deterioration than individual factors. Physical properties and DSR tests showed ultraviolet caused greater physical degradation than freeze–thaw. The penetration and ductility of the base asphalt decreased by approximately 54 % and 50 % while the SBS-modified asphalt exhibited reductions of 40 % and 20 %, respectively. Rutting, low-temperature beam bending, and freeze–thaw splitting tests revealed that freeze–thaw as primary degradation driver, with UV accelerating aging. The dynamic stability of the base asphalt mixture after freeze −thaw aging decreased by 56.5 %, flexural tensile strength reduced by 20.7 %, and splitting strength ratio declined from 82.7 % to 69.3 %. FTIR, GPC, and Organic elemental analysis revealed that the demonstrated coupled aging altered colloidal structure through aromatic compound cleavage and oxidation. The oxygen content of the two asphalt substrates decreases to 15.33 % and 13.11 %, while SBS-modified asphalt showed a smaller decrease to 7.58 %, confirming SBS’s significant anti-aging enhancement.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135104"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamic analysis and experimental verification of bi-reforming of industrial off-gases as a pre-step for e-fuel generation","authors":"Daniel Reiner,&nbsp;Marina Orlić,&nbsp;Christoph Hochenauer,&nbsp;Vanja Subotić","doi":"10.1016/j.fuel.2025.135078","DOIUrl":"10.1016/j.fuel.2025.135078","url":null,"abstract":"<div><div>E-fuels are highly necessary to decarbonize transportation, especially in sectors such as heavy-duty transportation or aviation, which require high energy density fuels. Fischer–Tropsch (FT) synthesis can be used to produce these carbon-neutral fuels, using syngas as the feedstock. Instead of utilizing carbon dioxide produced by direct air capture facilities in extremely low amounts and in an energy-intensive manner, it is more favorable to extract it from industrial processes and other off-gases, where it is available in high amounts. An innovative solution for the conversion of off-gases to syngas is high-temperature solid oxide electrolysis (SOE) in co-electrolysis mode. However, off-gases can contain hydrocarbons, which can reduce the lifetime of cells in electrolyzers. To overcome this problem, bi-reforming is employed as a preliminary stage to convert hydrocarbons into syngas. This study considers three pathways for production of e-fuels from off-gases: (1) bi-reforming, co-electrolysis, FT synthesis, (2) bi-reforming, FT synthesis, and (3) direct application of syngas as fuel from bi-reforming. The reliability and lifetime of reforming reactors depend on specific operating conditions, which vary according to the path in question. The objective of this study is to analyze the thermodynamics of the reforming processes in order to identify optimal operating parameters and to prevent undesired reactor degradation. Accordingly, an equilibrium-based calculation method was developed and experimentally confirmed in a reforming reactor utilizing distinct catalysts. To mitigate the risk of carbon deposition and, consequently, extend the catalyst’s lifespan, the formation of graphite and carbon nanofibers is considered in equilibrium calculations.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135078"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced electrochemical performance of MoP2-based supercapacitor electrodes through doping with transition, post-transition, and rare earth metals","authors":"Mudassar Maraj ,&nbsp;Mir Rehman Shabbir ,&nbsp;Faisal Ali ,&nbsp;Muhammad Hamza Naseer ,&nbsp;Ali Haider Bhalli ,&nbsp;Sarmad Ali ,&nbsp;Nian Li ,&nbsp;Xiuhong Li ,&nbsp;Zhenyang Wang","doi":"10.1016/j.fuel.2025.134960","DOIUrl":"10.1016/j.fuel.2025.134960","url":null,"abstract":"<div><div>The increasing global energy demand necessitates the development of reliable and environmentally sustainable energy storage solutions. This study explores the enhancement of molybdenum diphosphide (MoP₂)-based supercapacitor electrodes through doping with tantalum (Ta), tin (Sn), and lanthanum (La), respectively. The dopants Ta, Sn and La have been chosen from transition metals, post-transition metals and rare earth elements respectively to have the comparison of electrochemical performance. A facile hydrothermal synthesis route was employed to achieve controlled nanostructure growth, and the materials were thoroughly characterized using XRD, SEM, EDX, and TEM. Electrochemical properties were investigated through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a 2 M KOH electrolyte solution. The doping process significantly optimized the morphology of MoP₂, forming high-surface-area nanostructures such as nanorods, nanosheets, and nanoflowers. Electrochemical analysis revealed enhanced redox activity in the doped samples. Specifically, La-doped MoP₂ achieved superior performance of maximum capacitance of 1816F/g at 5 mV/s scan rate, with excellent cycling stability, retaining 92 % of its capacitance after 5000 cycles at 1 A/g. EIS results confirmed the high conductivity and improved charge transfer resistance of the La-doped sample. These findings highlight the critical role of rare earth element doping in optimizing MoP₂-based electrodes for supercapacitors, outperforming transition and post-transition metal doping in terms of energy storage capabilities and stability. The La-doped MoP₂ robust nanomaterial demonstrates significant potential for next-generation energy storage applications.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 134960"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption mechanism of high concentration NH3 on modified red mud surface","authors":"Yuanyuan Zhang ,&nbsp;Yuanyuan Chen ,&nbsp;Wenhe Liu ,&nbsp;Jianbo Li ,&nbsp;Jing Wang ,&nbsp;Kezhou Yan ,&nbsp;Fei Wang","doi":"10.1016/j.fuel.2025.135128","DOIUrl":"10.1016/j.fuel.2025.135128","url":null,"abstract":"<div><div>Red mud enriched iron has potential advantages in catalyzing NH₃ combustion to achieve high efficiency and low pollution. The adsorption of NH₃ on surface of red mud is crucial in the process of NH₃ catalytic combustion. The adsorption behavior of high concentration NH₃ on modified red mud surface was studied using temperature programmed desorption (TPD), with a focus on the relationship between the physicochemical characteristics of modified red mud surface and NH₃ adsorption performance. The results indicated that the NH₃ adsorption capacity of modified red mud was 13.4% higher compared with red mud, suggesting that the modification treatment could enhance NH₃ adsorption performance of red mud. It was related with generation of mesoporous structure and exposure of strong acid sites after modification according to the results of BET, XRF, XRD, NH₃-TPD, XPS, and FT-IR. The adsorption mechanism of NH₃ on modified red mud surface was further investigated through molecular simulation. When the gaseous NH₃ molecules were contacted with modified red mud, adsorption of NH₃ included physical absorption, in particular chemical adsorption. The NH₃ molecules would interact strongly with the modified red mud surface and adsorb onto the Fe atoms of Fe₂O₃ to form Fe-N bonds. The outcomes of this study were expected to enhance the understanding of adsorption mechanism of high concentration NH₃ on modified red mud surface during red mud using for catalytic combustion of NH₃.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135128"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Data-driven modeling for predicting the steady-state and transient performance of a dual-fuel medium-duty engine employing artificial neural networks","authors":"Antonio García,&nbsp;Javier Monsalve-Serrano,&nbsp;Javier Marco-Gimeno,&nbsp;Erasmo Iñiguez","doi":"10.1016/j.fuel.2025.135150","DOIUrl":"10.1016/j.fuel.2025.135150","url":null,"abstract":"<div><div>The dual-fuel combustion using the Reactivity Controlled Compression Ignition concept has demonstrated great potential in achieving low NOx and soot emissions while maintaining engine performance. However, its experimental transient behavior remains a challenge in the current literature and the use of modeling approaches to predict it. This study aims to develop effective predictive models for emissions and fuel consumption in a dual-fuel medium-duty engine. A 7.7L multi-cylinder dual-fuel engine was experimentally tested under stationary conditions and transient state under the World Harmonized Stationary Cycle at full load conditions. The data from experimental measurements is used as input for developing data-driven models to predict emissions and fuel consumption. The study utilizes correlation analysis and principal component analysis for variable selection, identifying speed, torque, and gasoline fraction as key predictors for NOx, CO, HC emissions, and fuel consumption at stationary conditions. Simplified artificial neural network models were developed using Bayesian optimization, achieving high <em>R²</em> values and low steady-state estimation error but with limited accuracy for instantaneous emission values under transient cycles. A multi-weighted artificial neural network framework was introduced, incorporating combustion parameters and intake/exhaust conditions for enhanced emission prediction. The results showed that while traditional neural network models performed well in steady-state predictions, they struggled with instantaneous transient emissions. The multi-weighted neural network significantly improved real-time prediction accuracy, particularly for CO and HC emissions, which showed strong dependence on intake and exhaust conditions. The model achieved average cycle errors below 7 % for NOx, CO, and HC, and below 1 % for fuel consumption, demonstrating its ability to capture transient engine behavior accurately. This study highlights the potential of data-driven modeling as a scalable alternative to traditional physics-based approaches for dual-fuel engine optimization. The findings confirm that a multi-weighted artificial neural network framework enhances transient prediction capabilities, bridging the gap between stationary engine models and real-world operating conditions.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135150"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Super-ensemble learning of petrographic features as exploration criteria: Classification of chromitite with unconventional catalysts","authors":"Elena Ifandi ,&nbsp;Daphne Teck Ching Lai ,&nbsp;Haezan Jangarun ,&nbsp;Stavros Kalaitzidis","doi":"10.1016/j.fuel.2025.135094","DOIUrl":"10.1016/j.fuel.2025.135094","url":null,"abstract":"<div><div>Sustainable development goals (SDGs) include the conservation and availability of Earth’s resources, and access to clean and affordable energy. Geosciences form the research foundation of Earth resource management, thus necessitating precision and advanced computational modelling for unconventional resource exploration. We developed a super-ensemble learning model that employs the Multinomial Naive Bayes and Extreme Gradient Boosting algorithms to identify exploration targets of naturally occurring catalysts for carbon dioxide methanation. Our model achieved 74% and 70% accuracy for the train and test sets, respectively, with up to 100% higher accuracy than alternative classifiers tested on this dataset. Our work presents a novel application of machine learning for exploring unconventional targets, uncovering the potential of mineral catalysts that require fewer processing steps. It highlights how tree-based, greedy algorithms, easier to implement and interpret than traditional compositional data analysis, can capture complex relationships in a multivariate dataset with high accuracy and translate them into observable characteristics, even directly on a hand specimen. Our work contributes to the advancement of sustainable energy materials which promote resource sustainability, especially in the face of potential noble and critical metal supply shortages by 2050.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135094"},"PeriodicalIF":6.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pt decorated (CoMnFeCrNi)3O4 high-entropy oxide for low-temperature combustion of C3H8","authors":"Lihong Xie ,&nbsp;Yaohun Dun ,&nbsp;Qiji Wang ,&nbsp;Jie Xu ,&nbsp;Song Li ,&nbsp;Rong Chen ,&nbsp;Chun Du ,&nbsp;Bin Shan","doi":"10.1016/j.fuel.2025.135090","DOIUrl":"10.1016/j.fuel.2025.135090","url":null,"abstract":"<div><div>High-entropy oxides (HEOs) have attracted significant attention as catalyst materials due to their unique high-entropy effect. However, their catalytic performance is often limited by a low specific surface area, a result of high-temperature synthesis. In this study, we prepared (CoMnFeCrNi)₃O₄ catalysts with high surface areas using the solution combustion synthesis method. Subsequently, Pt/(CoMnFeCrNi)₃O₄ composite catalysts for C₃H₈ combustion were synthesized through atomic layer deposition. Comprehensive characterizations confirmed the single spinel structure of the HEOs and the high dispersion of the loaded Pt nanoparticles. Notably, the best-performing Pt/(CoMnFeCrNi)₃O₄ composite catalyst exhibited remarkable C₃H₈ combustion activity, achieving 90% conversion of C₃H₈ at 302 °C, while maintaining good stability and water resistance. This performance enhancement is attributed to the activation of oxygen species at the Pt-HEO interface, which facilitates the decomposition of formate species during C₃H₈ combustion.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135090"},"PeriodicalIF":6.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and fabrication of 3D petal-like FeS2/r-GO nanocomposite as a high-performance electrode in hybrid supercapacitors","authors":"Prabhu Sengodan ,&nbsp;Tang Yuanmeng ,&nbsp;Xu Yang ,&nbsp;Su Xiaoxian ,&nbsp;John H.T. Luong ,&nbsp;Arunkumar Ammasi ,&nbsp;Yasin Orooji","doi":"10.1016/j.fuel.2025.135114","DOIUrl":"10.1016/j.fuel.2025.135114","url":null,"abstract":"<div><div>Novel materials are needed for high-performance energy storage devices (ESD) and metal sulfide-based materials with outstanding redox characteristics and high electrical conductivity are gaining attention. Based on a facile hydrothermal approach, a 3D petal-like FeS₂/r-GO nanocomposite was fabricated with a surface area of 27.33 m²/g, compared to 11.89 m²/g of pristine FeS₂. The electrode 3D petal-like FeS₂/r-GO structures’ rational design offers a synergistic effect, and fast ion transport. It enhances the redox reactionkinetic rate with a specific capacitance (C_sp) (capacity-C_Sc) of 748F/g (322C/g) at a current density (CD) of 0.5 A/g. The electrode exhibited remarkable cycle life capacitance retention (CR) and Coulombic efficiency (CE) of 85 % and 91 % after 10,000 charge-discharge (GCD) cycles at 8 A/g. The solid-state hybrid supercapacitor (HS) consists of FeS₂/r-GO and activated carbon (AC) as the positive and negative electrodes, whereas PVA/KOH gell serves as the electrolyte. The HS device achieved a 1.45 V and a C_S_p (C_Sc) of 110F/g (52 C/g) at 1 A/g with a power density (D_P) of 10,512 W/kg and an energy density (D_E) of 31.18 Wh/kg. It delivered a RE and CE of 83 %, and 90 % respectively, after 5,000 cycles.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135114"},"PeriodicalIF":6.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}