Journal of Power Sources最新文献_第9页

Quaternized polybenzimidazole ion-pair blend membranes for high performance and stability in high-temperature proton exchange membrane fuel cells 季铵化聚苯并咪唑离子对共混膜在高温质子交换膜燃料电池中的高性能和稳定性

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-25 DOI: 10.1016/j.jpowsour.2025.238428

Sher Afgan , Hyeongrae Cho , Petia Atanasova , Günter E.M. Tovar , Vladimir Atanasov

{"title":"Quaternized polybenzimidazole ion-pair blend membranes for high performance and stability in high-temperature proton exchange membrane fuel cells","authors":"Sher Afgan , Hyeongrae Cho , Petia Atanasova , Günter E.M. Tovar , Vladimir Atanasov","doi":"10.1016/j.jpowsour.2025.238428","DOIUrl":"10.1016/j.jpowsour.2025.238428","url":null,"abstract":"<div><div>High-temperature proton exchange membrane fuel cells (HT-PEMFCs) require effective and selective proton-transporting membranes, which should additionally be affordably accessible. Quaternized polybenzimidazole may enable such proton transport if it can be functionally introduced into an adequate membrane conformation. Here, we post-modified polybenzimidazole (PBI) via N-alkylation/arylation, creating a positively charged polymer backbone that improves solubility and processability in organic solvents. The thermal stability of the N-phenyl-substituted OPBI (Ph-OPBI) (400 °C) was remarkably higher than that of the N-methyl-substituted PBI (Me-OPBI) (200 °C). Both quarternized OPBIs formed stable and processable membranes after blending with 20 wt% phosphonated poly(pentafluorostyrene) (PWN). Ex-situ impedance tests revealed high proton conductivity, namely, 96 mS cm<sup>−1</sup> for Ph-OPBI-PWN (167 % doping) and 142 mS cm<sup>−1</sup> for Me-OPBI-PWN (313 % doping) at 180 °C. The blended membranes based on Ph-OPBI exhibited a superior performance compared to Me-OPBI and unmodified OPBI with a maximum power density of ∼0.55 W cm<sup>−2</sup> at 200 °C (H<sub>2</sub>/air, without humidification). Accelerated stress tests (AST) of the blended membranes based on the Ph-OPBI membrane also revealed remarkable stability, exhibiting non-detectable performance degradation over 100 cycles (∼288 h). Hence, the N-phenyl substituted OPBI opens a promising way to engineer membranes with improved performance and accessible for long-term operation in HT-PEMFC applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238428"},"PeriodicalIF":7.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155864","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

Advancing lithium-sulfur batteries using layered double hydroxide (LDH) -based nanocomposites: Progress, performance, challenges, and future prospects for energy storage 利用层状双氢氧化物（LDH）基纳米复合材料推进锂硫电池：储能的进展、性能、挑战和未来前景

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-25 DOI: 10.1016/j.jpowsour.2025.238446

Selvaraj Vennila , Baeksang Yoon , Byeonghun Oh , Duhyun Lim , Suresh Sagadevan , Dong Ick Son , Inseok Seo

{"title":"Advancing lithium-sulfur batteries using layered double hydroxide (LDH) -based nanocomposites: Progress, performance, challenges, and future prospects for energy storage","authors":"Selvaraj Vennila , Baeksang Yoon , Byeonghun Oh , Duhyun Lim , Suresh Sagadevan , Dong Ick Son , Inseok Seo","doi":"10.1016/j.jpowsour.2025.238446","DOIUrl":"10.1016/j.jpowsour.2025.238446","url":null,"abstract":"<div><div>Lithium-sulfur (Li-S) batteries hold great promise for next-generation energy storage system owing to the high theoretical energy density of sulfur. However, there are some existing issues such as the polysulfide shuttle effect, poor electrical conductivity of sulfur, and considerable volume changes during cycling which has remined as the significant challenges. This review analyzes the multifaceted role of layered double hydroxides (LDHs) to overcome these challenges by serving not only as sulfur-hosting matrices but also as polysulfide-trapping separator coatings and electrolyte additives. This review highlights that LDHs has combined physical confinement and chemical binding to effectively suppress polysulfide dissolution and migration, while their integration with conductive materials significantly enhances the electrochemical performance of sulfur. Additionally, this review elucidates the design of LDH architectures that accommodate volume changes, thereby improving the electrode stability and cycling life. Finally, a strategic roadmap for advancing LDH-based materials as scalable, economically viable, and practical Li-S battery applications is proposed, that has addressed the current gaps and future research directions.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238446"},"PeriodicalIF":7.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156369","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

Effect of high scandium doping in barium zirconate on nickel diffusion and performance of proton-conducting solid oxide electrolyzer cells 锆酸钡中高钪掺杂对质子导电固体氧化物电解槽镍扩散及性能的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-25 DOI: 10.1016/j.jpowsour.2025.238432

Matthew Naughton , Andrew J.E. Rowberg , Yuchen Zhang , Quanwen Sun , Wei Wu , Tadashi Ogitsu , Joel B. Varley , Meng Li , Wenjuan Bian , Hanping Ding , Zeyu Zhao , Yushan Yan , Dong Ding

{"title":"Effect of high scandium doping in barium zirconate on nickel diffusion and performance of proton-conducting solid oxide electrolyzer cells","authors":"Matthew Naughton , Andrew J.E. Rowberg , Yuchen Zhang , Quanwen Sun , Wei Wu , Tadashi Ogitsu , Joel B. Varley , Meng Li , Wenjuan Bian , Hanping Ding , Zeyu Zhao , Yushan Yan , Dong Ding","doi":"10.1016/j.jpowsour.2025.238432","DOIUrl":"10.1016/j.jpowsour.2025.238432","url":null,"abstract":"<div><div>Proton-conducting solid oxide electrolyzer cells (p-SOECs) are emerging but promising technologies for hydrogen production. However, due to the lack of a robust electrolyte, p-SOECs struggle simultaneously to display high performance, Faradaic efficiency, and durability. Motivated by its high proton concentrations and stability as a barium zirconate, we have investigated BaZr<sub>0.6</sub>Sc<sub>0.4</sub>O<sub>3</sub><sub>-δ</sub> (BZSc40) as a potential next-generation p-SOEC electrolyte. We found elevated levels of NiO diffusion through BZSc40 electrolytes during high-temperature sintering, attributed to the large oxygen vacancy concentrations present in BZSc40, as revealed by first-principle computational results. Controlling NiO diffusion is critical, as it can facilitate densification and grain size growth, but it may also detrimentally impact performance by causing electronic leakage. By optimizing sintering temperature when fabricating BZSc40 cells, we successfully controlled NiO diffusion, achieving sufficient electrolyte densification along with high performance and Faradaic efficiency. BZSc40 cells reached −0.99 A/cm<sup>2</sup> at 1.3 V and 600 °C and exhibited enhanced durability with a 3.37 mV/kh degradation rate at −0.8 A/cm<sup>2</sup> over a 200-h testing period. BZSc40 electrolytes demonstrated superior performance over BaZr<sub>0.8</sub>Y<sub>0.2</sub>O<sub>3</sub><sub>-δ</sub> (BZY20). In addition to elevated current densities and grain sizes, BZSc40 cells achieved Faradaic efficiencies of 76 % compared to 54 % for BZY20 at −0.2 A/cm<sup>2</sup> and 600 °C. This work lays the foundation for BZSc40 as a potential electrolyte due to its advantages over BZY20 while demonstrating the significance of controlling NiO diffusion when fabricating p-SOECs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238432"},"PeriodicalIF":7.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156363","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

Precision tailoring the nanopore architecture of lignin-derived hierarchical porous carbon for high-performance zinc ion storage 精确剪裁木质素衍生的分级多孔碳的纳米孔结构，用于高性能锌离子存储

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238420

Tao Huang , Lei Zhong , Fangbao Fu , Xihong Zu , Hai Li , Qiyu Liu , Wenli Zhang

{"title":"Precision tailoring the nanopore architecture of lignin-derived hierarchical porous carbon for high-performance zinc ion storage","authors":"Tao Huang , Lei Zhong , Fangbao Fu , Xihong Zu , Hai Li , Qiyu Liu , Wenli Zhang","doi":"10.1016/j.jpowsour.2025.238420","DOIUrl":"10.1016/j.jpowsour.2025.238420","url":null,"abstract":"<div><div>Precisely tailoring the pore structures in carbon materials and exploring the relationship between pore characteristics and the Zn<sup>2+</sup> ion storage capability is crucial for enhancing the power/energy densities of ZIHCs. In this work, we propose a coupled chemical activation and hard-template strategy to prepare lignin-derived hierarchical porous carbon (LHPC) with tunable mesopore structures successfully. The microporous and mesoporous structures of LHPC are finely tuned via the synergistic effects of nano ZnO templates and potassium acetate chemical activators. The optimized LHPC-2-800 exhibits a high specific surface area and a substantial mesopore volume. The unique mesopore with size of 10 nm provides a rapid ion diffusion channel, shortening the diffusion distance of Zn<sup>2+</sup> ions while accelerating the transport kinetics of Zn<sup>2+</sup> and enhancing the utilization rate of the active site. As a result, LHPC-2-800 delivers an ultrahigh specific capacitance of 440 F g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, maintaining a capacitance retention ratio of 44.7 % within the current density range of 0.1–50 A g<sup>−1</sup>. This work proposes a novel method to precisely tune the mesopore structure of lignin-derived hierarchical porous carbons and emphasizes the pivotal role of large mesoporous structures in enhancing the electrochemical performances of ZIHCs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238420"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119662","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

Recent progress on the utilization of polypyrrole (PPy)-based nanocomposites for electrochemical applications 聚吡咯基纳米复合材料在电化学中的应用研究进展

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238404

Sense Mametja , Olga K. Mmelesi , Jeremia S. Sefadi , Xinying Liu , Joshua Gorimbo

{"title":"Recent progress on the utilization of polypyrrole (PPy)-based nanocomposites for electrochemical applications","authors":"Sense Mametja , Olga K. Mmelesi , Jeremia S. Sefadi , Xinying Liu , Joshua Gorimbo","doi":"10.1016/j.jpowsour.2025.238404","DOIUrl":"10.1016/j.jpowsour.2025.238404","url":null,"abstract":"<div><div>Currently, polymers are receiving remarkable scientific attention for electrocatalytic applications due to their advantageous properties such as cost-effectiveness, abundance, non-toxicity, viscoelasticity, and reactivity. These polymers include polyacetylene (PA), polythiophene (PTh), polyaniline (PANI), and polypyrrole (PPy). However, bare polymers are less efficient since they have inferior conductivity compared to metals. There are several initiatives to solve this challenge including doping, nanocomposite/heterojunction formation, and defect engineering. Several studies conducted revealed that these initiatives yield nanocomposites with enhanced electronic properties, optical properties, electrocatalytic activity, stability, durability, and interestingly thermoelectric properties. In this study, the use of PPy-based nanocomposites is deemed necessary since PPy has high electrical conductivity compared to many polymers, good environmental stability, stable in the oxidized form, easily synthesized, and exhibits redox properties. These enhanced properties are normally found in certain polymer-free semiconductors such as platinum (Pt), iridium (Ir), and ruthenium (Ru). However, these metal-based electrocatalysts are exorbitant, prone to degradation, low selectivity, and challenging to control reaction pathways. This makes PPy-based catalysts significantly better alternatives. This study explores the synthesis, overall properties, and performance of electrocatalytic PPy-based nanocomposites in areas such as hydrogen evolution, oxygen reduction, carbon dioxide conversion, pollutant degradation, sensors, and supercapacitors.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238404"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156364","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

Real-time CCTV-based deep learning for early detection of lithium-ion battery fires 基于实时闭路电视的深度学习，用于锂离子电池火灾的早期检测

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238452

Mostafa M.E. H. Ali, Murat Tahtali, Maryam Ghodrat

{"title":"Real-time CCTV-based deep learning for early detection of lithium-ion battery fires","authors":"Mostafa M.E. H. Ali, Murat Tahtali, Maryam Ghodrat","doi":"10.1016/j.jpowsour.2025.238452","DOIUrl":"10.1016/j.jpowsour.2025.238452","url":null,"abstract":"<div><div>Lithium-ion battery (LIB) fires pose distinctive hazards—including toxic gas release, resistance to suppression, and potential re-ignition—making their early detection critical for effective mitigation. Current LIB fire detection approaches often rely on embedded sensors or wiring, limiting applicability in portable devices such as laptops, and e-scooters. Moreover, conventional fire detection systems cannot distinguish between LIB and non-LIB fires, limiting situational awareness and delaying appropriate response. This study presents a real-time deep learning framework for LIB fire recognition using CCTV footage, leveraging characteristic spatio-temporal combustion patterns such as jet-like flame projection, abrupt ignition bursts, temporary flame extinction, and re-ignition. A 3D convolutional neural network with a ResNet-based backbone was trained on a custom dataset comprising LIB fires, conventional fires, and non-fire scenes from diverse real-world environments. The model achieved ∼87 % accuracy, with balanced precision, recall, and F1-score, and processed video at 94 FPS with low false-alarm and miss rates. Temporal prediction analysis revealed that short-term classification fluctuations corresponded with actual combustion stages, providing interpretable insights into fire progression. Grad-CAM++ visualizations confirmed the network's focus on relevant LIB fire features. The proposed framework combines high accuracy, interpretability, and operational feasibility, offering deployment potential across residential, industrial, and transportation environments. Its adoption will enable early intervention, improve decision-making, and support safer integration of LIB-powered technologies in everyday life.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238452"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156366","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

Mechanically durable and electrochemically stable NbTiO2 cathode for flexible thin-film batteries 用于柔性薄膜电池的机械耐用和电化学稳定的NbTiO2阴极

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238463

Yeoung-Eun Seo , Sang-Gyu Woo , Doha Lim , So Mang Park , Junyoung Mun , Han-Ki Kim

{"title":"Mechanically durable and electrochemically stable NbTiO2 cathode for flexible thin-film batteries","authors":"Yeoung-Eun Seo , Sang-Gyu Woo , Doha Lim , So Mang Park , Junyoung Mun , Han-Ki Kim","doi":"10.1016/j.jpowsour.2025.238463","DOIUrl":"10.1016/j.jpowsour.2025.238463","url":null,"abstract":"<div><div>With the rapid advancement of flexible and portable electronics, energy storage systems require both excellent mechanical flexibility and stable electrochemical performance. Thin film structures offer promising advantages for satisfying these requirements, including uniform thickness control and strong adhesion to flexible substrates. Accordingly, in this study, rutile-phase NbTiO<sub>2</sub> (NTO) thin films were fabricated on Cu substrates via radio frequency magnetron sputtering at room temperature. By precisely controlling the NTO thickness and O<sub>2</sub> flow rate, optimal electrochemical properties were achieved under the conditions of a 100-nm film thickness and 0.4-sccm O<sub>2</sub> flow rate. The optimized NTO electrode exhibited excellent electrochemical performance, including a high initial charge capacity of 647.1 mAh g<sup>−1</sup>, discharge capacity of 407.2 mAh g<sup>−1</sup>, capacity retention of 72.2 % after 100 cycles, and Coulombic efficiency of >99 %. In addition, the mechanical flexibility of NTO was investigated through repeated bending tests of >10,000 cycles, and no significant change in electrical resistance was observed. These results demonstrate the potential of sputtered NTO thin films as reliable cathode materials for flexible thin-film batteries and next-generation wearable electronics.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238463"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156367","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

Neutron radiography analysis of water management in a passive proton-exchange membrane fuel cell with superhydrophobic catalyst layers 具有超疏水催化剂层的被动质子交换膜燃料电池水管理的中子照相分析

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238460

L. Duque , E. Diaz-Alvarez , M. Sarma , T. Lappan , N. Weber , J. Lee , P. Boillat , P. García-Salaberri , M.A. Folgado , A.M. Chaparro

{"title":"Neutron radiography analysis of water management in a passive proton-exchange membrane fuel cell with superhydrophobic catalyst layers","authors":"L. Duque , E. Diaz-Alvarez , M. Sarma , T. Lappan , N. Weber , J. Lee , P. Boillat , P. García-Salaberri , M.A. Folgado , A.M. Chaparro","doi":"10.1016/j.jpowsour.2025.238460","DOIUrl":"10.1016/j.jpowsour.2025.238460","url":null,"abstract":"<div><div>Water transport in proton-exchange membrane fuel cells (PEMFCs) with superhydrophobic catalyst layers (CLs) has been studied with neutron radiography. Superhydrophobic CLs were deposited by electrospray on the membrane to be tested on the cathode and anode sides of the cells. The cells are operated under passive conditions without applying convective forces for gas inlets. Operando water thickness images show that electrosprayed CLs accelerate water elimination by natural forces. Water management shows three stages characterized by different transport processes: 1) surface diffusion of <em>bound water</em> (associated to the ionomer), followed by 2) <em>free water</em> transport (liquid phase) by capillary diffusion towards the gas diffusion layer pores, and 3) evacuation of free water from the surface of the cathode by natural forces. A vertical cell, with cell plane parallel to gravity field, favors the action of evaporation and the dragging of water drops and slugs over the cathode surface leading to higher passive performance during the second and third stages. In this orientation, a superhydrophobic CL on one electrode and a hydrophilic CL on the other doubles the power generation with respect to a standard cell. In the horizontal position, superhydrophobic CLs can alleviate transport hindrances due to less effective natural forces.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238460"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119705","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

Elucidating Pt/C and ionomer aggregation dynamics in the manufacturing of fuel cell catalyst layers: a discrete element method approach 阐明燃料电池催化剂层制造过程中铂/碳和离聚体聚集动力学：一种离散元方法

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238238

Sourab Barath Vijayaraghavan , Matthias Baldofski , Alejandro A. Franco

{"title":"Elucidating Pt/C and ionomer aggregation dynamics in the manufacturing of fuel cell catalyst layers: a discrete element method approach","authors":"Sourab Barath Vijayaraghavan , Matthias Baldofski , Alejandro A. Franco","doi":"10.1016/j.jpowsour.2025.238238","DOIUrl":"10.1016/j.jpowsour.2025.238238","url":null,"abstract":"<div><div>The production of fuel cells is bottle-necked by the prohibitive cost of one component – the catalyst layer. The goal of manufacturers has been to minimise Pt loading and maximise the electrochemical efficiency, at scale. A mesoscale model is sought-after, to describe the influence of common manufacturing parameters on the microstructure of fuel cell catalyst layers. In this work we propose a novel end-to-end mesoscale modeling workflow to capture the spatial aggregation of carbon support particles against an ionomer-based binder. We use the Discrete Element Method (DEM) to capture the co-aggregation of the carbon-support and binder, as a function of their inter-particle Derjaguin–Landau–Verwey–Overbeek (DLVO) interactions. This model provides insights in the variance in ionomer aggregation as a function of solvent composition. We observe a decrease in ionomer secondary aggregation with decreasing water content. This variance in the local catalyst – ionomer distribution was studied using various micro-structural descriptors.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"658 ","pages":"Article 238238"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155235","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

A lithium-ion battery remaining useful life prediction model based on multilayer perceptron expert networks and temporal feature composition 基于多层感知器专家网络和时间特征组合的锂离子电池剩余使用寿命预测模型

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-09-24 DOI: 10.1016/j.jpowsour.2025.238371

Xuan Yi , Jianmao Xiao , Gang Lei , Xin Hu , Zhiyong Feng

{"title":"A lithium-ion battery remaining useful life prediction model based on multilayer perceptron expert networks and temporal feature composition","authors":"Xuan Yi , Jianmao Xiao , Gang Lei , Xin Hu , Zhiyong Feng","doi":"10.1016/j.jpowsour.2025.238371","DOIUrl":"10.1016/j.jpowsour.2025.238371","url":null,"abstract":"<div><div>Unscheduled downtime caused by lithium-ion battery failures in electric vehicles and energy storage systems poses a significant challenge for accurately predicting remaining useful life (RUL). Existing methods, however, typically depend on high-quality and comprehensive performance data, limiting their applicability in complex real-world scenarios. To overcome this limitation, we propose MECCA-Net, a novel neural network framework whose core component is a self-designed Temporal Pattern Composer (TPC) that adaptively captures multi-level and cross-scale temporal degradation patterns from limited discharge capacity data. MECCA-Net further integrates multi-layer denoising autoencoders, multi-head self-attention mechanisms, and a mixture-of-experts structure to enhance its generalization capability and robustness. The experimental results demonstrate that MECCA-Net reduces the Relative Error (RE) by approximately 40% on several authoritative lithium-ion battery lifespan datasets compared to the latest state-of-the-art models. Furthermore, this approach exhibits superior prediction accuracy and stability performance over mainstream time-series modeling techniques, showcasing its efficiency and practical value in lithium-ion battery health management and predictive maintenance. The source code and datasets are available at <span><span>https://github.com/keepawakeyi/MECCA-NET</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"659 ","pages":"Article 238371"},"PeriodicalIF":7.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119815","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