Journal of Power Sources最新文献

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Dual-bonded black phosphorus composites with P–C and P–S linkages for high-performance lithium-ion batteries 高性能锂离子电池用P-C和P-S键双键黑磷复合材料
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238619
Jinnuo Yang, Jiahui Lv, Yanqing Feng, Jiang Yan, Shuo Zhao, Yang Liu, Lei Zu, Huiqin Lian
{"title":"Dual-bonded black phosphorus composites with P–C and P–S linkages for high-performance lithium-ion batteries","authors":"Jinnuo Yang,&nbsp;Jiahui Lv,&nbsp;Yanqing Feng,&nbsp;Jiang Yan,&nbsp;Shuo Zhao,&nbsp;Yang Liu,&nbsp;Lei Zu,&nbsp;Huiqin Lian","doi":"10.1016/j.jpowsour.2025.238619","DOIUrl":"10.1016/j.jpowsour.2025.238619","url":null,"abstract":"<div><div>Lithium-ion batteries (LIBs) attract widespread attention as promising energy storage devices owing to their superior energy density, excellent cycle life, and absence of memory effect. However, they still encounter challenges in high-rate performance and structural stability, necessitating further optimization. This study focuses on a composite anode material constructed from black phosphorus (BP), tungsten disulfide (WS<sub>2</sub>), and ultra-high-purity whisker carbon nanotubes (UWCNTs) (BP-WS<sub>2</sub>-UWCNTs). The research investigates the regulatory effects of phosphorus–carbon (P–C) and phosphorus–sulfur (P–S) bonds at the material interface on electrochemical performance. Characterization indicates the establishment of P–C and P–S bonds at the composite interface, which enhance structural integrity and improve electron/ion transport capabilities. Electrochemical performance evaluations validate the combined effect of these interfacial bonds: at 2.0 A g<sup>−1</sup>, the BP-WS<sub>2</sub>-UWCNTs anode delivers 605.8 mAh g<sup>−1</sup> for 2000 cycles, and retains 252.2 mAh g<sup>−1</sup> after 3000 cycles even at 15.0 A g<sup>−1</sup>, exhibiting remarkable rate performance and prolonged cycling durability. In practical applications of LIBs, the composite anode maintains robust structural integrity and outstanding electrochemical performance. This work highlights that the combined effect of interfacial P–C and P–S chemical linkages effectively facilitates lithium-ion diffusion and stabilizes the electrode structure, offering valuable insights and viable strategies for advancing high-capacity anode design in LIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238619"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring processability limitations of commercial hard carbon for negative electrodes of Na-ion batteries 探索商用硬碳钠离子电池负极加工性能的限制
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238588
Hari Raj , Soorya Saravanan , Melisa Herrmann Alba , Francois Rabuel , Da Huo , Alejandro A. Franco
{"title":"Exploring processability limitations of commercial hard carbon for negative electrodes of Na-ion batteries","authors":"Hari Raj ,&nbsp;Soorya Saravanan ,&nbsp;Melisa Herrmann Alba ,&nbsp;Francois Rabuel ,&nbsp;Da Huo ,&nbsp;Alejandro A. Franco","doi":"10.1016/j.jpowsour.2025.238588","DOIUrl":"10.1016/j.jpowsour.2025.238588","url":null,"abstract":"<div><div>Optimizing electrode manufacturing processes for sodium-ion batteries (SIBs) is crucial for enhancing their performance and commercial viability. This study systematically investigates the influence of critical electrode fabrication parameters, including solid content, mass loading, and calendering, on commercial hard carbon (HC) electrode properties. Slurries prepared with 35 % and 40 % solid content (SC) demonstrated distinct rheological behaviours, directly affecting electrode mechanical stability and processability. The slurry with SC-35 % provided a better balance between manageable viscosity and robust mechanical stability upon drying, whereas SC-40 % slurry exhibited higher viscosity, particle agglomeration, and poorer electrode mechanical integrity. Calendering was studied at compression degrees of 10 %, 20 %, and 30 %, revealing limited effectiveness in reducing porosity due to the intrinsic mechanical properties of HC, whereas, higher compression degrees led to structural damage. Electrochemical studies conducted in half-cells (HC vs. Na) and full-cells (HC vs. Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>) clearly indicated better electrochemical performance at moderate calendering degrees (10–20 %), effectively balancing mechanical integrity and electrical conductivity. This comprehensive study results in a useful experimental database in academic literature, underscoring the importance of precise control over slurry formulation and calendering parameters to achieve structurally robust electrodes, thus significantly enhancing the practical performance of SIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238588"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring BaTiO3-Ni0.5Co0.5Fe2O4 multiferroic composites for enhanced energy storage applications 定制用于增强储能应用的BaTiO3-Ni0.5Co0.5Fe2O4多铁复合材料
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238617
Damodar Reddy Komatreddy , Pavan Kumar Naini , Gitesh Ishwarji Choudhari , Siva Chidambaram
{"title":"Tailoring BaTiO3-Ni0.5Co0.5Fe2O4 multiferroic composites for enhanced energy storage applications","authors":"Damodar Reddy Komatreddy ,&nbsp;Pavan Kumar Naini ,&nbsp;Gitesh Ishwarji Choudhari ,&nbsp;Siva Chidambaram","doi":"10.1016/j.jpowsour.2025.238617","DOIUrl":"10.1016/j.jpowsour.2025.238617","url":null,"abstract":"<div><div>Multiferroic composites comprising piezoelectric and piezomagnetic phases are considered highly promising options for future memory devices, spintronic devices, energy harvesting systems, and energy storage applications. In this work, particulate composites are synthesized using piezoelectric barium titanate (BaTiO<sub>3</sub>-BTO) and piezomagnetic nickel cobalt ferrite (Ni<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>-NCFO), owing to their exceptional piezoelectric and magnetostrictive properties, respectively. Magnetic hysteresis (M − H) measurements show that the 0.2BTO-0.8NCFO (denoted as x = 0.2) composite exhibits the highest saturation magnetization (M<sub>S</sub>∼47.7 emu/g) and remanent magnetization (M<sub>r</sub>∼21 emu/g), which further decreases in the composites with increasing BTO weight percentage. Dielectric studies reveal a deterioration in both real and imaginary permittivities at higher frequencies, attributed to the suppression of space charge and dipolar polarization mechanisms. Electrochemical analysis shows the battery-type behaviour of the prepared samples. Notably, the x = 0.8 composite achieves a higher specific capacitance (C<sub>s</sub>) of ∼397 F/g and a specific capacity of ∼179 C/g at 0.25 A/g. Also, it maintains a capacity retention of about ∼69 % after 10,000 charge-discharge cycles. Further, the asymmetric device was constructed using x = 0.8 composite and activated carbon as cathode and anode respectively, which delivers a high energy density of 8 Wh/kg at a power density of 350 W/kg. These findings indicate the potential of BTO-NCFO multiferroic composites for applications in energy storage systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238617"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dimensionless thermal safety framework for nickel-enriched lithium-ion batteries: From runaway onset to extinction thresholds 富镍锂离子电池的无量纲热安全框架:从失控开始到熄灭阈值
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238614
Pragya Berwal, Ayushi Mehrotra, Yejun Lee, Jack J. Yoh
{"title":"Dimensionless thermal safety framework for nickel-enriched lithium-ion batteries: From runaway onset to extinction thresholds","authors":"Pragya Berwal,&nbsp;Ayushi Mehrotra,&nbsp;Yejun Lee,&nbsp;Jack J. Yoh","doi":"10.1016/j.jpowsour.2025.238614","DOIUrl":"10.1016/j.jpowsour.2025.238614","url":null,"abstract":"<div><div>Nickel-enriched lithium-ion batteries (LIBs) offer high energy density but exhibit heightened susceptibility to thermal runaway (TR), posing critical safety risks for electric vehicles and energy storage systems. This study establishes a unified, dimensionless framework to assess TR risk and determine extinction thresholds—cooling conditions under which TR cannot self-sustain. Calorimetry at heating rates of 10–20 °C min<sup>−1</sup> quantifies enthalpy release, onset, and peak exothermic reactions, providing temperature-dependent heat generation inputs. These data are embedded into a heat balance model to determine the critical Nusselt number (Nu<sub>cr</sub>) that marks the boundary between self-heating and quenching. The safety zone is defined at the inflection point of the heat-flow curve, capturing the earliest stage of instability. Results show that faster heating delays initial decomposition in nickel-rich cathodes but intensifies autocatalytic reactions, lowering onset temperatures in structurally stabilized variants. Non-dimensionalization across cell geometries and coolant properties yields a universal energy parameter for TR suppression, enabling direct comparison of designs. The theory links fundamental TR mechanisms to practical extinction thresholds, offering actionable criteria for safer, cost-effective thermal management in next-generation LIB systems.</div></div><div><h3>Novelty and Significance Statement</h3><div>This work is the first to formulate a unified, dimensionless safety assessment theory that quantitatively links thermal runaway (TR) onset mechanisms in nickel-enriched lithium-ion batteries to extinction thresholds for TR suppression. Unlike prior studies that treat TR behavior and cooling requirements separately, our approach integrates experimentally measured, temperature-dependent heat generation into a heat balance model to derive critical Nusselt numbers and a universal energy parameter applicable across cell geometries and coolant properties. This framework enables direct, design-ready identification of the cooling conditions required to quench early-stage instability—providing both a mechanistic understanding of TR kinetics and a practical criterion for safe, cost-effective thermal management in high-energy LIB systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238614"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photoelectrocatalytic hydrogen evolution combined with organic waste water treatment by red mud derived catalysts 光电催化析氢结合赤泥衍生催化剂处理有机废水
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-16 DOI: 10.1016/j.jpowsour.2025.238600
Chuang Wang , Pengliang Chen , Haolun Li , Xingxing Cheng , Jiansheng Zhang , Meng Ni
{"title":"Photoelectrocatalytic hydrogen evolution combined with organic waste water treatment by red mud derived catalysts","authors":"Chuang Wang ,&nbsp;Pengliang Chen ,&nbsp;Haolun Li ,&nbsp;Xingxing Cheng ,&nbsp;Jiansheng Zhang ,&nbsp;Meng Ni","doi":"10.1016/j.jpowsour.2025.238600","DOIUrl":"10.1016/j.jpowsour.2025.238600","url":null,"abstract":"<div><div>Photoelectrocatalytic (PEC) water splitting is a green technology for hydrogen generation using solar energy. When coupled with wastewater as the water source, this approach simultaneously addresses environmental remediation. This study proposes a sustainable strategy for producing green hydrogen from organic wastewater, where H<sub>2</sub> evolution occurs concurrently with pollutant degradation. To reduce catalyst costs, we fabricated FeOOH/BiVO<sub>4</sub> composite photoanodes using red mud as a raw material. The degradation performance of these photoanodes was systematically investigated under varying voltages, pH levels, and initial pollutant concentrations. Comparative analysis of PEC, photocatalytic, and electrocatalytic pathways revealed the superior efficiency of PEC under identical conditions. Under optimized parameters, the composite photoanode achieved ∼98 % degradation of methylene blue (40 mg/L) within 120 min, along with effective removal of other organic pollutants (methyl orange, rhodamine B, and reactive red). Hydrogen evolution experiments confirmed the synergistic coexistence of PEC degradation and water splitting in a single system. By converting solid waste into efficient catalysts for simultaneous hydrogen production and pollutant degradation, this work offers a multifunctional green solution to energy and environmental challenges.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238600"},"PeriodicalIF":7.9,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanocarbons-based piezoelectric structures for energy harvesting: Nanoarchitectonics and recent advances 用于能量收集的纳米碳基压电结构:纳米建筑学和最新进展
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-16 DOI: 10.1016/j.jpowsour.2025.238597
Zahra Sadat , Mohammad Hossein Morshedsolouk , Masoomeh Bagherzadeh Erfani , Elham Bastani , Seyedeh Mehrnoush Nokandeh , Reza Eivazzadeh-Keihan , Amir Kashtiaray
{"title":"Nanocarbons-based piezoelectric structures for energy harvesting: Nanoarchitectonics and recent advances","authors":"Zahra Sadat ,&nbsp;Mohammad Hossein Morshedsolouk ,&nbsp;Masoomeh Bagherzadeh Erfani ,&nbsp;Elham Bastani ,&nbsp;Seyedeh Mehrnoush Nokandeh ,&nbsp;Reza Eivazzadeh-Keihan ,&nbsp;Amir Kashtiaray","doi":"10.1016/j.jpowsour.2025.238597","DOIUrl":"10.1016/j.jpowsour.2025.238597","url":null,"abstract":"<div><div>For the use of energy harvesting products outside the laboratory and on a larger and industrial scale, environmental sensitivities and cost are two very important parameters. In addition to the well-known mechanical, electrical, and thermal properties, nanocarbons (NCs) have a very important property, which is the price-performance ratio. Due to these properties, their use in piezoelectric materials is economical and promising. In addition, NCs, such as carbon nanotubes (CNTs), carbon fibers (CF), graphene (G) and its derivatives, etc., have a large surface area, which facilitates their functionalization in order to improve biodegradability and biocompatibility. In this review, the reasons for the use of NCs in piezoelectric materials are first examined, and then recent research utilizing NCs in energy harvesting materials is reviewed. The objectives of this review are to examine various aspects of NCs, including piezoelectric efficiency, replacement with conventional piezoelectric materials, and review environmental factors.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238597"},"PeriodicalIF":7.9,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The importance of non-ideality of protons and water in the open circuit potential modelling of redox flow battery aqueous electrolytes 质子和水的非理想性在氧化还原液流电池开路电位建模中的重要性
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-16 DOI: 10.1016/j.jpowsour.2025.238590
YuChen Sun , Nigel Brandon , Dominik Weiss , Anthony Kucernak
{"title":"The importance of non-ideality of protons and water in the open circuit potential modelling of redox flow battery aqueous electrolytes","authors":"YuChen Sun ,&nbsp;Nigel Brandon ,&nbsp;Dominik Weiss ,&nbsp;Anthony Kucernak","doi":"10.1016/j.jpowsour.2025.238590","DOIUrl":"10.1016/j.jpowsour.2025.238590","url":null,"abstract":"<div><div>The non-ideality of electrolytes is commonly neglected in redox flow battery (RFB) modelling work. The neglect of activity coefficients introduces a discrepancy of up to 100 mV between the experimental open circuit potential (OCP) and model predicted reversible Nernstian potential, which propagates into inaccurate state of charge estimation and misinterpretation of thermodynamic efficiency. Due to the complex chemistry and the lack of thermodynamic data, activity coefficients of individual species in highly non-ideal electrolytes are often difficult to determine. In this work, proton and water activity values were calculated using geochemical numerical codes implementing the Pitzer theory, a semi-empirical thermodynamic model that accounts for the non-ideal behavior of ions in electrolyte solutions. The completed Nernst equation with corrected activity values has been elaborated for OCP comparison. An in-operando approach was proposed to measure the proton and water activities of strongly acidic electrolytes. The cell OCP of Hydrogen-Vanadium RFB (H<sub>2</sub>-V RFB) and Hydrogen-Manganese RFB (H<sub>2</sub>-Mn RFB) was measured and calculated to assess the electrochemical significance of proton and water non-ideality to the RFB model. With the measured activity data, the error between the experimental and calculated OCP values was reduced from 88-100 mV to 17–50 mV.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238590"},"PeriodicalIF":7.9,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cation-doping modulated phase-transition mechanism and structural stability of layered nickel/manganese oxide cathode for enhanced electrochemical capability 增强电化学性能的层状镍/锰氧化物阴极的阳离子掺杂调制相变机理和结构稳定性
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-16 DOI: 10.1016/j.jpowsour.2025.238610
Haiwen Zhang , Yangyang Zhang , Jiayu Li, Keying Di, Xingde Xiang
{"title":"Cation-doping modulated phase-transition mechanism and structural stability of layered nickel/manganese oxide cathode for enhanced electrochemical capability","authors":"Haiwen Zhang ,&nbsp;Yangyang Zhang ,&nbsp;Jiayu Li,&nbsp;Keying Di,&nbsp;Xingde Xiang","doi":"10.1016/j.jpowsour.2025.238610","DOIUrl":"10.1016/j.jpowsour.2025.238610","url":null,"abstract":"<div><div>Layered nickel/manganese oxides have garnered considerable attention as a high-capacity cathode material for rechargeable sodium-ion batteries, but being challenged by complex phase transitions and poor cycling performance. A novel layered oxide with suppression of phase transitions is designed by doping Ti and Al atoms into NaNi<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>2</sub> lattice as a highly stable cathode material. Structural and electrochemical evolutions of the material are investigated with X-ray diffraction, X-ray photoelectron spectroscopy, cyclic voltammetry, and galvanostatic measurements. As revealed, it mainly undergoes a single-phase evolution with lattice distortion of O3 phase at a low-potential plateau region and a two-phase reaction process with coexistence of O3 and P3 phases at a long potential slope region. The reversible O3/P3 coexistence-dominated phase-transition mechanism enables the material having fast sodium-diffusion ability and good structural stability, thus leading to superior high-rate capability (135.2 mA h g<sup>−1</sup> at 10 mA g<sup>−1</sup> and 73.4 mA h g<sup>−1</sup> at 1000 mA g<sup>−1</sup>) and enhanced cycling performance (92.3 % retention after 100 cycles at 100 mA g<sup>−1</sup>). The origin of the improved performance is understood based on the analysis of in-situ dQ/dV curves and ex-situ X-ray diffraction. The finding suggests the feasibility of cation doping in modulating structural evolution and electrochemical reversibility of layered oxides.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238610"},"PeriodicalIF":7.9,"publicationDate":"2025-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cerium in-plane transport in PEM fuel cells during real-world automotive operations: experimental and dynamic modelling analysis 在现实世界的汽车操作中,质子交换膜燃料电池中的铈平面内传输:实验和动态建模分析
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-15 DOI: 10.1016/j.jpowsour.2025.238538
Francesco Verducci , Livio Cultrera , Elena Colombo , Aixeen Manuel Fontanilla , Francesco Casamichiela , Davide Mazzucconi , Andrea Pola , Andrea Casalegno , Andrea Baricci
{"title":"Cerium in-plane transport in PEM fuel cells during real-world automotive operations: experimental and dynamic modelling analysis","authors":"Francesco Verducci ,&nbsp;Livio Cultrera ,&nbsp;Elena Colombo ,&nbsp;Aixeen Manuel Fontanilla ,&nbsp;Francesco Casamichiela ,&nbsp;Davide Mazzucconi ,&nbsp;Andrea Pola ,&nbsp;Andrea Casalegno ,&nbsp;Andrea Baricci","doi":"10.1016/j.jpowsour.2025.238538","DOIUrl":"10.1016/j.jpowsour.2025.238538","url":null,"abstract":"<div><div>Cerium is an additive adopted in polymer electrolyte membrane fuel cells to extend membrane lifetime, but its mobility remains a challenge. A cerium transport model accounting for diffusion, migration and water activity gradient is developed. Diffusion coefficient is calibrated on literature data, as the effect of Ce ion-exchange fraction on protonic conductivity and membrane water uptake; Einstein relation is used for the migration coefficient. Validation is conducted on migration profiles obtained via hydrogen pump tests, quantified through X-ray fluorescence. Trends under different temperatures, relative humidities and initial cerium contents are reproduced. Tailored tests investigate how the water activity gradient affects Ce transport. Furthermore, a 1+1D fuel cell performance model is exploited to determine the initial and time-integral mean values of the operating variables that characterize the current steps of a dynamic load cycle, then provided to the Ce transport model. The experimentally measured planar radical scavenger redistributions, after hundreds of hours of single-cell automotive-representative operations, are predicted from air-inlet to outlet. Cerium accumulates towards air-inlet and depletes at middle/outlet; the modelling analysis identifies the building-up in the region of lowest ionic potential and water content. Succeeding in predictions, this model can support the development of strategies to improve durability.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"660 ","pages":"Article 238538"},"PeriodicalIF":7.9,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145326291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hierarchical porous carbon from waste tire pyrolysis carbon black via in-situ SiO2 templating for high-performance supercapacitors 从废轮胎热解炭黑中提取分级多孔炭,通过原位SiO2模板制备高性能超级电容器
IF 7.9 2区 工程技术
Journal of Power Sources Pub Date : 2025-10-15 DOI: 10.1016/j.jpowsour.2025.238603
Jun Yin , Yani Guo , Kaixi Yan , Yanzhi Sun , Yongmei Chen , Junqing Pan
{"title":"Hierarchical porous carbon from waste tire pyrolysis carbon black via in-situ SiO2 templating for high-performance supercapacitors","authors":"Jun Yin ,&nbsp;Yani Guo ,&nbsp;Kaixi Yan ,&nbsp;Yanzhi Sun ,&nbsp;Yongmei Chen ,&nbsp;Junqing Pan","doi":"10.1016/j.jpowsour.2025.238603","DOIUrl":"10.1016/j.jpowsour.2025.238603","url":null,"abstract":"<div><div>Realizing high-value recycling of pyrolysis carbon black (CBp) is essential to promoting the sustainable development of the waste tire pyrolysis industry. However, the high-end applications of CBp are restricted by its high ash content, small specific surface area and poor electrical conductivity. Herein, waste tire-derived CBp were successfully converted to hierarchical porous activated carbon (ACBp1) for high-performance supercapacitors by one-step acid purification coupled with in-situ SiO<sub>2</sub> template activation. This method not only greatly reduces the ash content by avoiding use of environmentally-hazardous hydrofluoric acid, but also is beneficial to forming a rich interconnected pore structure to increase the ion and electron migration rate. ACBp1 achieves a specific capacitance of 246 F g<sup>−1</sup> at current density of 1 A g<sup>−1</sup>, while maintaining 95 % of initial capacitance after 100,000 charge-discharge cycles at 100 A g<sup>−1</sup>. The ACBp1-based zinc ion hybrid supercapacitor demonstrates a high specific capacity of 66 mAh g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. This study provides a new idea to improve the utilization efficiency of CBp and offers a new way to further develop cheap and sustainable energy storage materials.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238603"},"PeriodicalIF":7.9,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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