Fuel最新文献

{"title":"Alkali/alkaline earth metals doped holey penta-hexagonal graphene for ultrahigh-performance CO2 capture and separation over N2/CH4","authors":"Tiantian Qiao ,&nbsp;Hongyu Pan ,&nbsp;Ziyi Han ,&nbsp;Zishuo Zhang ,&nbsp;Sainan Zhou ,&nbsp;Xiaoqing Lu ,&nbsp;Yongqing Li","doi":"10.1016/j.fuel.2025.135129","DOIUrl":"10.1016/j.fuel.2025.135129","url":null,"abstract":"<div><div>Developing adsorbent materials with superior CO₂ adsorption and separation capabilities is crucial for addressing pressing environmental challenges such as the greenhouse effect and global warming. Employing density functional theory and grand canonical Monte Carlo methods, this study evaluates the potential of two-dimensional holey penta-hexagonal graphene doped with alkali and alkaline-earth metals (AM-HPhGs, where AM = Li, Na, K, Mg, Ca) for CO₂ adsorption and separation. Structural analyses reveal AM-HPhGs possess high binding energies (−2.12 to −5.15 eV) and high cohesive energies (6.37 to 6.77 eV/atom), reflecting their significant structural stability. Electronic structure analysis demonstrates robust covalent interactions, substantial charge transfer, pronounced electropositivity/electronegativity, and clear orbital overlapping between AM atoms and HPhG. These characteristics suggest robust interactions between AM atoms and HPhG, providing a stable and conducive environment for CO₂ uptake. Moreover, incorporating AM atoms significantly enhances both CO₂ adsorption capacities and selectivities in AM-HPhGs. Among AM-HPhG structures, Ca-HPhG demonstrates an outstanding CO₂ adsorption capacity of 11.51 mmol g⁻¹ and CO₂ selectivity over CH₄/N₂ of 2385/1366 at 298 K and 1.0 bar, surpassing many reported metal-doped adsorbent materials. Analysis of gas distribution indicates that AM atom doping not only provides more effective CO₂ adsorption sites on HPhG but also influences the distribution and packing pattern of CO₂. Interaction analysis reveals that AM atom doping increases the affinity of the framework for CO₂, thereby enhancing CO₂-framework interactions. The CO₂-framework isosteric heat, van der Waals, and Coulomb interactions surpass those between framework and CH₄/N₂, successfully accounting for the high CO₂ adsorption performance and selectivity in AM-HPhGs. These findings suggest that AM-HPhGs, particularly Ca-HPhG, hold great promise as excellent CO₂ adsorbent materials.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135129"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681614","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":"Unveiling the influence of asphalt on the thermal storage behavior of microencapsulated phase change materials through non-isothermal crystallization kinetics","authors":"Xueting Wang ,&nbsp;Xiao Huan ,&nbsp;Cong Qi ,&nbsp;Guanyu Li ,&nbsp;Yujin Yao ,&nbsp;Huaxin Chen ,&nbsp;Dongliang Kuang","doi":"10.1016/j.fuel.2025.135101","DOIUrl":"10.1016/j.fuel.2025.135101","url":null,"abstract":"<div><div>The melting and crystallization of phase change materials (PCM) are crucial processes for their functionality. Understanding their kinetic behavior is significant for guiding material design and promoting applications. This work analyzes the thermal storage kinetics of three systems—paraffin, hybridized microencapsulated phase change materials (HMPCM), and modified asphalt with HMPCMs (HMA)—under varying heating/cooling rates, temperatures, times, and environmental conditions. The effectiveness of HMPCMs in regulating the temperature of asphalt is also validated. The temperature regulation results indicate that the maximum temperature difference between the HMA and the matrix asphalt can reach 8.4 °C, demonstrating good temperature control effectiveness. Results from the non-isothermal crystallization kinetics reveal that HMPCMs provide heterogeneous nucleation sites for paraffin, thereby promoting its nucleation. However, HMPCMs also restrict the growth region of paraffin molecular chains, hindering crystal growth. Additionally, asphalt significantly impedes the nucleation and crystal growth of paraffin. The mechanism by which asphalt hinders paraffin crystal growth can be explained through the interfacial thermal resistance effect. The differences in material properties between asphalt and HMPCMs decrease the thermal conductivity at the two-phase interface, reducing heat transfer efficiency. This leads to a decrease in paraffin crystallization efficiency and lowers the liquid–solid phase transition temperature, ultimately delaying paraffin crystallization. Results on crystallization activation energy imply that encapsulating paraffin and incorporating it into asphalt diminish the mobility of paraffin molecules, which ultimately results in a reduction of the melting/crystallization enthalpy of the phase change material.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135101"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682118","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":"Promoting effect of Nb doping on NH3-SCR of NOx at high temperature over Zr5W1Ox","authors":"Shouli Wang,&nbsp;Yuesong Shen","doi":"10.1016/j.fuel.2025.135137","DOIUrl":"10.1016/j.fuel.2025.135137","url":null,"abstract":"<div><div>Driven by the strategy of reducing pollution and CO₂ emissions, high-temperature deNO_x has become a major demand for NO_x treatment of gas exhaust such as gas power generation. This paper intends to further improve the high-temperature deNO_x performance of Zr₅W₁O_x by Nb doping. A series of Zr₅W₁Nb_aO_x with different Nb contents were synthesized by sol–gel method for NH₃-SCR of NO. Combined with characterization analysis of FE-SEM, XRD, XPS, N₂ adsorption–desorption, H₂-TPR, NH₃-TPD and <em>in situ</em> DRIFTS, the influence mechanism of Nb incorporation was discussed. The results showed that the addition of Nb promoted the deNO_x activity temperature window of the catalyst to shift towards high temperature by 30 ℃. Among them, Zr₅W₁Nb_0.09O_x exhibited better high-temperature NH₃-SCR deNO_x activity, and its efficiency of NH₃-SCR of NO reached over 90 % within 480–683 ℃ at a space velocity of 50000 h⁻¹; Moreover, under the coexistence of 5 vol% water vapor and 200 ppm SO₂, its deNO_x activity did not decrease, exhibiting excellent resistance to water vapor and SO₂ poisoning. Analysis showed that there were both <em>Lewis</em> and <em>Brønsted</em> acid sites on the surface of Zr₅W₁Nb_0.09O_x. The addition of Nb increased the strength of the medium and strong acid sites of the catalyst, enhanced its effective adsorption of NH₃ molecules, and broadened the high-temperature deNO_x activity temperature window. <em>in situ</em> DRIFTS analysis confirmed that the high-temperature NH₃-SCR deNO_x reaction of Zr₅W₁Nb_0.09O_x followed both <em>Eley-Rideal</em> and <em>Langmuir-Hinshelwood</em> mechanisms.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135137"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682188","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":"Strategic conversion of industrial plastic waste into transportation fuel using iron and strontium containing metal waste as a catalyst","authors":"Huijeong Jeong ,&nbsp;Sangyoon Lee ,&nbsp;Eilhann E. Kwon ,&nbsp;Sungyup Jung","doi":"10.1016/j.fuel.2025.135127","DOIUrl":"10.1016/j.fuel.2025.135127","url":null,"abstract":"<div><div>Metal waste (MW) produced from different manufacturing companies has been considered a hazardous material and discarded in secured landfilling sites. The complicated chemical composition of MW made it difficult to be used as a beneficial material. When the hazardous waste is reused as a useful material, waste recycling with the minimization of hazardous waste landfilling could be achieved. In this study, MW from magnetic materials producing from facilities was utilized as a catalyst for conversion of polyethylene based industrial plastic waste (IPW) into more valuable transportation fuel. Without MW catalyst, IPW was converted into long chained HCs at 600 ˚C. Multi-zone pyrolysis further degraded them into shorter ones (average carbon length: C₁₇), but the carbon chain length was still higher than those of diesel and aviation fuels. MW catalyst enhanced the C–C and C–H bond scissions, producing C_7-16 HCs and H₂ as major components. The catalytic activity was attributed to the presence of transition and alkaline (earth) metal (oxide) such as Iron (oxide), Strontium (oxide), and their alloys in MW. IPW plastic oil from catalytic pyrolysis (C_13.22H_25.86 for 45.99 MJ kg⁻¹) had similar chemical formula and heating value of petrodiesel (C_12.3H_22.2 for 42.5 MJ kg⁻¹) and jet fuel (C_10.17H_19.91 for 43.23 MJ kg⁻¹). Therefore, this study demonstrated that the hazardous MW from industry could be employed as a catalyst for conversion of low-quality plastic oil into higher quality transportation fuel.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135127"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682190","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":"Utilisation of wood stove fuels produced by washing and torrefaction of short rotation coppice willow grown on contaminated land","authors":"David P. Maxwell,&nbsp;Bijal A. Gudka,&nbsp;Jenny M. Jones,&nbsp;Alan Williams","doi":"10.1016/j.fuel.2025.135159","DOIUrl":"10.1016/j.fuel.2025.135159","url":null,"abstract":"<div><div>Short Rotation Coppice Willow is widely used for the phytoremediation of land contaminated with toxic metals. The problem that arises is whether the contaminated willow can be used as a feedstock for combustion applications or chemical processing. Thus, washing and torrefaction processes have been used to examine the possibility of improving the quality of the wood. Here combustion studies in a 5 kW wood stove have been undertaken of briquettes made (without a binder to prevent contamination) from compressed raw chipped unwashed and washed wood; it was not possible to study the torrefied wood in this way because briquettes would not form without a binder. Measurements were made of emissions of CO, NOx, particulate matter and bottom ash, and some partitioning of species to particulate was also examined. Water washing at room temperature for 20 min saw a 28 % reduction in wt% ash, and many inorganic species were partially removed by leaching, by fines removal or a through a mixture of both mechanisms. This resulted in different combustion behaviour for the washed fuel, particularly ignition, where higher tar formation resulted in a pre-flaming smoulder. Nevertheless, the briquettes from the washed willow achieved higher peak burning rates, shorter combustion times and hotter flue gas temperatures. This led to lower CO and PM emissions, although NO emissions increased. As a general trend, washing prior to torrefaction helped to mitigate the concentration of ash/inorganic species in the willow that is normally observed. Despite a 26 % decrease in Zn concentrations in the washed, torrefied willow, levels were still higher than dictated by the ISO standard. Further optimisation could easily rectify this but the issue around disposal of contaminated leachate remains a challenge.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135159"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682191","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":"Soot particles generated by n-heptane and n-heptane/OME3 in an inverse diffusion flame: A comparative analysis of physical properties and oxidative reactivity","authors":"Ye Liu ,&nbsp;Ran Zhang ,&nbsp;Chenxi Wang ,&nbsp;Haibo Chen ,&nbsp;Gang Lyu ,&nbsp;Jun Wang ,&nbsp;Huayu Tian ,&nbsp;He Yang ,&nbsp;Yajun Wang ,&nbsp;Chenyang Fan ,&nbsp;Bin Xu ,&nbsp;Xiaowei Wang ,&nbsp;Hongyuan Wei ,&nbsp;Dimitris Margaritis","doi":"10.1016/j.fuel.2025.135097","DOIUrl":"10.1016/j.fuel.2025.135097","url":null,"abstract":"<div><div>The widespread adoption of E-fuel, oxymethylene ether-3 (OME₃), is a promising solution to accelerate the decarbonisation of the transport sector. However, the application of OME₃ inevitably alters the combustion characteristics, affecting the soot generation process and consequently changing the physical properties of these soot particles. These alterations, in turn, influence not only associated health and climate concerns but also the control strategies of diesel particulate filter (DPF) regeneration. Here, high-resolution transmission electron microscopy (HRTEM) and thermogravimetric analysis (TGA) were employed to explore the effects of blending OME₃ on soot primary particle size, fractal dimension, nanostructure, and oxidative characteristics. The results show that the addition of OME₃ form smaller soot precursors and accelerates the oxidation of soot particles, which subsequently reduces the size of primary particles. The smaller size of soot particles favours oxidation, but they are likely to pose more severe health risks. The smaller primary particles exhibit more pronounced Brownian motion and weaker van der Waals forces, leading to the formation of a looser agglomerate structure and smaller fractal dimensions (<em>D_f</em>). Furthermore, the addition of OME₃ results in a reduction of long-range order in C atoms network and an increase of odd-number carbon rings during the generation of soot particles, which in turn leads to a reduction in fringe length (<em>L_f</em>) and an increase in fringe tortuosity (<em>T_f</em>) and separation distance (<em>S_f</em>) of soot particles. These nanostructural changes induced by OME₃ enhance the oxidative reactivity of soot particles, as evidenced by the lower oxidative characteristic temperatures and reduced activation energy.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135097"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681605","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":"Virtual flow metering using stacking ensemble techniques and nonlinear system identification","authors":"Felipe da Costa Pereira ,&nbsp;Pedro Henrique Cardoso Paulo ,&nbsp;Márcio da Silveira Carvalho ,&nbsp;Helon Vicente Hultmann Ayala","doi":"10.1016/j.fuel.2025.134893","DOIUrl":"10.1016/j.fuel.2025.134893","url":null,"abstract":"<div><div>In petroleum production systems, data-driven virtual flow meters (VFMs) offer a viable option to physical hardware or first-principle models for predicting multiphase flow rates. Although the existing literature examines various techniques, it overlooks multi-model strategies and system identification methods. This study addresses these gaps in research by employing stacked generalization models and black-box system identification to improve production rate predictions. Stacked ensembles that combine prefitted estimators surpassed all other advanced machine learning algorithms evaluated, outperforming the best non-linear models by 5 % to 37 % and the top ensemble approaches by 1.3 % to 4.5 % in terms of root mean squared error (RMSE). System identification emerged as an effective method for evaluating optimal lags and temporal dependencies, while stacking ensembles improved well-rate prediction by merging different base learners, which can perform better for different instances of data. Additionally, free simulation runs predict long-term historical production based only on initial conditions. The strategy proposed in this study increases the reliability of VFM models by stacking various base learners and optimizing the model order, presenting a novel approach for the design of data-driven VFM estimators.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 134893"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682138","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":"Experimental investigation of the early development of spark-ignited CH4-air and C3H8-air flame kernels","authors":"Marco Pretto ,&nbsp;Pietro Giannattasio ,&nbsp;Viljam Grahn ,&nbsp;Ponnya Hlaing ,&nbsp;Alberto Cafari ,&nbsp;Jari Hyvönen","doi":"10.1016/j.fuel.2025.135110","DOIUrl":"10.1016/j.fuel.2025.135110","url":null,"abstract":"<div><div>The performance of spark-ignited (SI) engines is highly influenced by the early flame kernel development around the spark plug, which depends on both the properties of the local fuel–air mixture and the ignition strategy. Many experimental investigations have been carried out in order to understand the phenomena controlling the formation of the plasma column between the spark plug electrodes and its subsequent evolution into a self-propagating flame, but they tend to lack critical information on the ignition and are mostly limited to near-atmospheric conditions. On the modelling side, in addition to costly numerical simulations several low-dimensional or phenomenological models have been proposed, but they usually provide insufficiently accurate results, also due to assumptions of questionable physical foundation caused by the lack of clear experimental evidence. This work aims to address these limitations, presenting the results of an extensive experimental campaign conducted using the optical spray combustion chamber (OSCC) available in the Wärtsilä laboratories. The development of spark-ignited CH4- and C3H8-air flame kernels expanding in a quiescent environment was recorded using high-speed (100 kHz) Schlieren imaging supported by mixture- and electricity-related measurements. The tests include different unburned conditions, with maximum pressures of 10 bar, and multiple ignition strategies. The results are thoroughly discussed, focusing on the impact of ignition parameters, fuel type and unburned conditions on the kernel growth from its initiation up to a radius of around 16 mm. In particular, the relative impact of breakdown and glow electrical energy is examined at changing fuel type, equivalence ratio, and thermodynamic conditions of the unburned mixture, with special emphasis on the cases experiencing flame extinction. The outcomes of this work will be also used as a basis for future advancements in the modelling of SI flame kernel development.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135110"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682119","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":"Core-scale modelling of cyclic creep deformation caused by cyclic CO2 injection and storage in unconventional reservoirs","authors":"Amirsaman Rezaeyan ,&nbsp;Hamidreza Hamdi ,&nbsp;Amin Ghanizadeh ,&nbsp;Son Tran ,&nbsp;Christopher R. Clarkson","doi":"10.1016/j.fuel.2025.135102","DOIUrl":"10.1016/j.fuel.2025.135102","url":null,"abstract":"<div><div>Cyclic CO₂ injection, followed by soaking and production—commonly referred to as “Huff-n-Puff” (HnP)—can be used to enhance oil recovery, while mitigating greenhouse gas emissions, from unconventional reservoirs. The cyclic loading and unloading stresses associated with HnP induces cyclic creep deformation in the reservoir. This study aims to investigate the impact of cyclic creep deformation on CO₂ storage and enhanced oil recovery (EOR) under varying geomechanical conditions. Intact and fractured core plugs from the Canadian Montney Formation were subjected to single-phase gas flow (gas permeability) measurements under multiple cycles of loading and unloading stresses, with rock and flow properties (e.g., permeability, porosity) determined for each cycle. The experimental data informed hydromechanical models incorporating various deformation scenarios (rigid, elastic, weakly elastic, and cyclic creep) and coupled with multiphase, multicomponent flow and transport models. Results reveal that cyclic creep deformation diminishes CO₂-EOR potential by reducing permeability and porosity with each successive cycle, with fractures exhibiting greater reductions compared to the matrix. Accumulated creep deformation results in slower pressure buildup during CO₂ injection and a slower depletion rate during oil production. Consequently, CO₂ storage is reduced by 18% and 30%, and oil recovery decreases by 5% and 20% in the matrix (pore) and fracture domains, respectively, relative to models without creep deformation. Additionally, free and dissolved CO₂ storage volumes increase with each cycle, with fractures enabling significantly higher dissolved CO₂ storage (21%) compared to matrix-only storage (6%). A progressive reduction in diffusive CO₂ flow across cycles further highlights a transition from diffusion-dominated to convection-dominated flow due to increased effective stress. This study is the first to incorporate cyclic creep deformation into HnP models, demonstrating its critical role in influencing CO₂ storage capacity and EOR performance. Ignoring cyclic creep deformation effects can lead to overestimation of CO₂ storage capacity and oil recovery, emphasising the importance of accounting for these effects in the design of optimal HnP schemes for oil recovery and sustainable carbon management strategies.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135102"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682121","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":"Anion engineering coupled with trace Pt boosts FeOOH for seawater splitting under industrial conditions","authors":"Qian Lu ,&nbsp;Silu Liu ,&nbsp;Yusen Chen ,&nbsp;Jun Xing ,&nbsp;Yingxia Zong ,&nbsp;Weiping Xiao ,&nbsp;Dongfeng Zhao ,&nbsp;Dehong Chen ,&nbsp;Lei Wang ,&nbsp;Zexing Wu","doi":"10.1016/j.fuel.2025.135112","DOIUrl":"10.1016/j.fuel.2025.135112","url":null,"abstract":"<div><div>Developing efficient and stable electrocatalysts is imperative for water electrolysis to boost the practical applications of hydrogen energy. Herein, iron hydroxide with anionic defects and loaded trace platinum is prepared by corrosion engineering onto 3D porous nickel-iron (NIF) foam (Pt, B-FeOOH/NIF) at room temperature. The Pt, B-FeOOH/NIF with the sea-urchin-like structure possesses rich oxygen vacancies, good conductivity, and superhydrophilicity surface, and thus greatly facilitating electron transfer and mass transfer. The coupling effect of the transition metal and small amount of noble metal leads to an optimal balance of hydroxyl ions and hydrogen atoms adsorption, which provides superior electrocatalytic activity and long-term stability in alkaline solutions. Therefore, the Pt, B-FeOOH/NIF needs only 320 and 257 mV overpotential to achieve 1000 mA cm⁻² for hydrogen evolution reaction (HER) in alkaline freshwater/seawater, respectively, and 10 mA cm⁻² for the oxygen evolution reaction (OER) with only 209 and 292 mV, exhibiting superior bifunctional catalytic performance for overall water splitting. The assembled electrolyzers display optimum catalytic performance and stability at high currents for industrial applications. This study provides an approach for the fabrication of noble metal loaded onto transition metal hydroxide nanomaterials to obtain highly active electrocatalysts.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"394 ","pages":"Article 135112"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682122","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}