International Journal of Electrochemical Science最新文献_第2页

3D multiphysics modeling and design optimization of a 25-layer Z-type SOFC stack 25层z型SOFC叠层的三维多物理场建模与设计优化

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.ijoes.2026.101320

Chenyuan Hong, Yongyang Fan, Zitian Luo, Daifen Chen

{"title":"3D multiphysics modeling and design optimization of a 25-layer Z-type SOFC stack","authors":"Chenyuan Hong, Yongyang Fan, Zitian Luo, Daifen Chen","doi":"10.1016/j.ijoes.2026.101320","DOIUrl":"10.1016/j.ijoes.2026.101320","url":null,"abstract":"<div><div>To address the performance and reliability requirements for high-power solid oxide fuel cell (SOFC) stacks, a three-dimensional coupled flow-thermal-electrochemical numerical model has been established to optimize a 25-layer Z-type SOFC stack design, The synergistic effects of Z-type inlet/outlet manifold layout and air flow distributing geometry over single-cell on the flow, temperature, and pressure distribution characteristics are systematically investigated. Preliminary results indicate that for a 25-layer medium-scale stack with a 2in1out configuration, the Z-type structure combined with a hybrid configuration of 7 square air flow channels and ribs could ensure good distributing qualities of both flow and oxygen within the stack. This provides critical structural design guidance for constructing high-performance, high-reliability modular high-power SOFC systems. The results show that without increasing the length of the current collection path, the contact area of the rib airway and cathode of the Z-type SOFC stack using square ribs increased by 17 % (5 square) and 22.7 % (7 square) respectively, and the optimized oxygen distribution range increased. The optimized structure demonstrates overall velocity enhancement, with maximum velocity increases of 2.2 m/s (7 square) and 3.4 m/s (5 square)，and verifies the effectiveness of structural adjustment in enhancing the uniformity of the flow field.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101320"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Internal heating of lithium-ion batteries at low temperatures based on electro-thermal modeling 基于电热模型的低温锂离子电池内部加热

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-02 DOI: 10.1016/j.ijoes.2026.101316

Yankong Song , Kehao Yin , Chao Lyu , Xiao Liang , Wei Li

{"title":"Internal heating of lithium-ion batteries at low temperatures based on electro-thermal modeling","authors":"Yankong Song , Kehao Yin , Chao Lyu , Xiao Liang , Wei Li","doi":"10.1016/j.ijoes.2026.101316","DOIUrl":"10.1016/j.ijoes.2026.101316","url":null,"abstract":"<div><div>Lithium-ion batteries (LIBs) are highly sensitive to operating temperature and experience particularly severe performance degradation at low temperature (here define as temperature below 0 °C). Preheating of LIBs represents an effective strategy to mitigate these adverse effects prior to operation under such conditions. Among various preheating techniques, the internal heating method has garnered increasing attention due to its advantages in temperature uniformity and operational simplicity. However, the application of excessively high current amplitudes during heating will induce capacity rapidly fade. To address this issue, this paper proposes a constrained pulse heating method that limits the current amplitude. Based on a thermal coupling simplified electrochemical model (TC-SEM), the criterion for preventing lithium plating is translated into current amplitude constraints across varying temperature and states of charge (SOC). Moreover, this study developed an experimental platform capable of delivering adjustable pulsed currents is constructed, incorporating these predefined current constraints to dynamically regulate the heating process and minimize degradation. Validation experiments demonstrate that no significant capacity degradation is observed following 100 heating cycles. In contrast, a control group subjected to heating with current amplitudes exceeding the prescribed heating current limits exhibited a capacity loss of approximately 2.1 % after only 30 cycles.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101316"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of a UiO-67 metal-organic framework for the sensitive electrochemical detection of omeprazole in the biological samples UiO-67金属有机骨架在生物样品中奥美拉唑灵敏电化学检测中的应用

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-08 DOI: 10.1016/j.ijoes.2026.101317

Mohammadreza Belali, Seyed Karim Hassaninejad-Darzi, Haniyeh Shafiei

{"title":"Application of a UiO-67 metal-organic framework for the sensitive electrochemical detection of omeprazole in the biological samples","authors":"Mohammadreza Belali, Seyed Karim Hassaninejad-Darzi, Haniyeh Shafiei","doi":"10.1016/j.ijoes.2026.101317","DOIUrl":"10.1016/j.ijoes.2026.101317","url":null,"abstract":"<div><div>A novel electrochemical sensor based on a UiO-67 metal-organic framework (MOF) modified with a carbon paste electrode (UiO-67/CPE) was developed for the sensitive and selective quantification of omeprazole (OM). The UiO-67/CPE exhibited remarkable electrocatalytic activity toward OM oxidation vs. bare CPE. Also, the improved electrochemical behavior can be ascribed to the remarkable textural properties of UiO-67, namely its high surface area and porous architecture. Experimental conditions, including UiO-67 amount in the UiO-67/CPE and pH of buffer solution were optimized through a one variable at a time. The results indicated that the optimal conditions were at 0.03 g of UiO-67 and a pH of 3.0. The resulting UiO-67/CPE sensor offered a broad linear response (0.15–224.83 µM), a low detection limit of 0.15 µM and excellent precision (RSD = 3.83 % for reproducibility and 3.27 % for repeatability). The UiO-67/CPE sensor enabled sensitive determination of OM concentrations in human plasma samples, with results confirming its high reliability through excellent recoveries (98–105 %) and high selectivity against potential interferences.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101317"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Approximate analytical modeling of nonlinear CO₂ adsorption kinetics 非线性CO₂吸附动力学的近似解析建模

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.ijoes.2026.101323

V. Kamala Priyatharshini , S.Shyamala Malini , R. Nalini , A. Meena , L. Rajendran

{"title":"Approximate analytical modeling of nonlinear CO₂ adsorption kinetics","authors":"V. Kamala Priyatharshini , S.Shyamala Malini , R. Nalini , A. Meena , L. Rajendran","doi":"10.1016/j.ijoes.2026.101323","DOIUrl":"10.1016/j.ijoes.2026.101323","url":null,"abstract":"<div><div>Heterogeneous CO₂ adsorption kinetics on solid amine sorbents are analyzed using a Toth-type isotherm to describe equilibrium behavior, leading to a nonlinear ordinary differential equation governing the temporal evolution of surface coverage. The nonlinear adsorption rate, formulated in terms of the driving force between equilibrium and instantaneous coverages, is solved analytically using the Rajendran–Joy method (RJM), yielding closed-form expressions for transient adsorption uptake over a wide time domain. The analytical solutions are validated against numerical simulations and quantitatively benchmarked against established Toth-based kinetic models, demonstrating comparable predictive accuracy with significantly reduced computational cost and enhanced parametric transparency. Sensitivity analysis elucidates the influence of kinetic and isotherm parameters on adsorption dynamics and identifies limiting regimes where the model reduces to linear or pseudo-order kinetics. The model limitations, including its validity range under strongly nonlinear adsorption conditions, are discussed. Beyond gas–solid capture systems, the developed kinetic framework is also applicable to electrochemical interfaces where CO₂ adsorption on amine-functionalized electrodes or catalytic surfaces governs interfacial reaction rates, such as in electrochemical CO₂ reduction processes.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101323"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cathodic disbondment of epoxy-glass flake coatings on different metal substrates in simulated seawater 模拟海水中环氧玻璃鳞片涂层在不同金属基体上的阴极剥离

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.ijoes.2026.101325

Yingdong Guan , Wenbo Li , Wei Lu , Xiyan Liu , Yihan Wang , Ping Xu , Liang Li

{"title":"Cathodic disbondment of epoxy-glass flake coatings on different metal substrates in simulated seawater","authors":"Yingdong Guan , Wenbo Li , Wei Lu , Xiyan Liu , Yihan Wang , Ping Xu , Liang Li","doi":"10.1016/j.ijoes.2026.101325","DOIUrl":"10.1016/j.ijoes.2026.101325","url":null,"abstract":"<div><div>Glass flake coatings are widely used in marine and pipeline applications owing to their excellent barrier properties and corrosion resistance. However, cathodic disbondment (CD) may occur under applied cathodic potentials. In this study, epoxy–glass flake coatings with comparable thickness and similar composition were deposited on TC4 titanium alloy, 316 L stainless steel, C36000 brass, and X65 carbon steel to investigate their disbondment behavior under highly alkaline conditions (1 mol/dm<sup>3</sup> NaOH solution) and cathodic polarization (−850 mV, −1100 mV, and −1350 mV vs. Ag/AgCl) for 5 days. The results indicated that, in the absence of cathodic polarization, the coating–substrate interface on C36000 brass exhibited the highest resistance to alkali-induced disbondment, followed by 316 L stainless steel, X65 carbon steel, and TC4 titanium alloy, which can be related to the stability of metal–polymer interfacial bonding. Under cathodic polarization at −850 mV, −1100 mV, and −1350 mV, the resistance to cathodic disbondment consistently followed the same order: TC4 titanium alloy > C36000 brass > 316 L stainless steel > X65 carbon steel. Substrates on which hydrogen evolution became significant at relatively less negative potential, such as X65 carbon steel and 316 L stainless steel, exhibited more severe coating disbondment. In contrast, TC4 titanium alloy exhibited superior coating stability, which could be attributed to its more negative onset potential for hydrogen evolution, resulting in a lower hydrogen evolution rate under the same cathodic polarization conditions.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101325"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A nanozyme–enzyme hybrid electrochemical platform based on CeO₂–MoS₂/Au for selective lactate monitoring in human sweat 基于CeO 2 -MoS 2 /Au的纳米酶-酶混合电化学平台用于人体汗液中乳酸的选择性监测

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-05 DOI: 10.1016/j.ijoes.2026.101315

Shijing Di , Zongqiang Jin , Hengyuan Liu , Huaiming Wang

{"title":"A nanozyme–enzyme hybrid electrochemical platform based on CeO₂–MoS₂/Au for selective lactate monitoring in human sweat","authors":"Shijing Di , Zongqiang Jin , Hengyuan Liu , Huaiming Wang","doi":"10.1016/j.ijoes.2026.101315","DOIUrl":"10.1016/j.ijoes.2026.101315","url":null,"abstract":"<div><div>This study reports a nanozyme-enhanced electrochemical platform for quantifying lactate in exercise-induced sweat, constructed by modifying a glassy carbon electrode with a CeO₂–MoS₂ composite decorated with Au nanoparticles and immobilized lactate oxidase. Structural characterization confirmed crystalline CeO₂ (8 nm) with mixed Ce³ ⁺/Ce⁴⁺ states, layered MoS₂ (0.62 nm spacing), and uniformly distributed AuNPs, forming a conductive, high-surface-area catalytic interface. The composite significantly reduced the H₂O₂ reduction overpotential, enabling sensor operation at 0.0 V vs Ag/AgCl and minimizing interference from coexisting sweat metabolites. Electrochemical impedance spectroscopy showed a reduction in charge transfer resistance from ∼580 Ω (bare electrode) to ∼220 Ω after nanozyme modification, supporting accelerated electron transport. The sensor exhibited rapid amperometric response (<10 s), a broad linear range of 0.05–20 mM, and a sensitivity of 25.0 µA·mM⁻¹ ·cm⁻², with a detection limit of 0.02 mM, fully encompassing physiological sweat lactate levels from rest to intense exercise. High selectivity was demonstrated, with responses to 5 mM lactate remaining within 97–103 % in the presence of 0.2 mM ascorbate, 0.2 mM urate, and 5 mM glucose, while <span>D</span>-lactate produced < 2 % of the <span>L</span>-lactate signal. The device showed excellent reproducibility (RSD 4.7 %), repeatability (RSD 3.2 %), and long-term stability, retaining ∼90 % sensitivity after four weeks of storage at 4 °C. Recovery tests in artificial sweat yielded 96–97 %, and real-sample analysis agreed within 4 % of a reference colorimetric assay. These results establish a laboratory-validated nanozyme–enzyme catalytic interface on a rigid glassy carbon electrode and provide a reproducible foundation for subsequent integration and validation on flexible, epidermal-relevant platforms for wearable sweat monitoring.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101315"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical performance of Fe-Co bimetallic oxide composite as cathode for aqueous zinc-ion batteries Fe-Co双金属氧化物复合材料作为锌离子电池正极的电化学性能

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-09 DOI: 10.1016/j.ijoes.2026.101318

Guang Hu , Youfeng Zhang , Sikai Wang , Bingzhe Ma , Yinling Wang , Wenzhu Zhang

{"title":"Electrochemical performance of Fe-Co bimetallic oxide composite as cathode for aqueous zinc-ion batteries","authors":"Guang Hu , Youfeng Zhang , Sikai Wang , Bingzhe Ma , Yinling Wang , Wenzhu Zhang","doi":"10.1016/j.ijoes.2026.101318","DOIUrl":"10.1016/j.ijoes.2026.101318","url":null,"abstract":"<div><div>The development of aqueous zinc-ion batteries is constrained by issues such as capacity decay and sluggish reaction kinetics of cathode materials. This study fabricated a Co₃O₄@Fe₂O₃ composite on carbon cloth via a two-step hydrothermal method. XPS analysis reveals a 0.2 eV negative shift in the Co 2p binding energy, suggesting electronic interaction between Co₃O₄ and Fe₂O₃; SEM and TEM images demonstrate uniform distribution of Fe₂O₃ particles on Co₃O₄ nanowires, with EDS mapping confirming overlapping spatial distributions of Fe, Co, and O elements. The Co₃O₄@Fe₂O₃/CC composite achieves a reversible specific capacity of 164.9 mAh/g at 1 A/g, exceeding that of pure Co₃O₄/CC (129.4 mAh/g). After 100 cycles at 0.1 A/g, the composite retains 67.6% of its capacity, exceeding the 59% retention of Co₃O₄/CC. In rate performance tests, the composite exhibits 87.8% capacity retention when the current density increases from 0.1 to 1 A/g, significantly higher than the 72.7% of Co₃O₄/CC. EIS analysis indicates a reduced charge transfer resistance, confirming improved reaction kinetics. This work provides insights into the design of polymetallic oxide composite cathodes.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101318"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of slurry composition and triboelectrochemical effects on copper electrochemical–mechanical polishing 铜电解-机械抛光中浆料组成及摩擦电化学效应的研究

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-10 DOI: 10.1016/j.ijoes.2026.101322

Yan-Fei Bian , Peng-Fei Fan , Yuan-Yuan Cheng , Jing-Zhong Chang

{"title":"Investigation of slurry composition and triboelectrochemical effects on copper electrochemical–mechanical polishing","authors":"Yan-Fei Bian , Peng-Fei Fan , Yuan-Yuan Cheng , Jing-Zhong Chang","doi":"10.1016/j.ijoes.2026.101322","DOIUrl":"10.1016/j.ijoes.2026.101322","url":null,"abstract":"<div><div>Copper electrochemical mechanical polishing (ECMP) is a critical planarization technique for advanced integrated circuit manufacturing, particularly as feature sizes shrink below 65 nm and low‑k dielectrics—vulnerable to mechanical damage—are increasingly adopted. To address the limitations of conventional chemical mechanical polishing, this study aims to develop high-performance ECMP slurries by optimizing hydroxyethylidene diphosphonic acid (HEDP)-based electrolytes with enhanced corrosion inhibition and surface quality. We systematically investigate the corrosion inhibition performance of 5-Methyl-1H-benzotriazole (TTA), both alone and in synergy with chloride ions, under acidic (pH 6) and alkaline (pH 8) conditions. Electrolyte formulations were evaluated based on material removal rate (MRR ≥ 600 nm/min), planarization efficiency (PE ≥ 0.7), and post-polish surface integrity, using electrochemical analysis, scanning electron microscopy (SEM), and profilometry. Triboelectrochemical behavior was further analyzed through the correlation between frictional power and electrochemical impedance. The results show that while TTA combined with Cl⁻ significantly improves PE and widens the usable potential window in acidic media, alkaline electrolytes deliver superior surface quality. Specifically, an optimized alkaline slurry containing 6 wt% HEDP, 0.3 wt% TTA, and 3 wt% triammonium citrate (TAC) achieves a stable PE ≥ 0.7 over a broad potential range and yields a surface roughness of only 9.0 nm—outperforming acidic counterparts. Moreover, the inverse relationship between frictional power and impedance reveals the dynamic competition between anodic oxidation and mechanical removal during ECMP. This work demonstrates that alkaline ECMP with TTA and TAC provides an effective strategy for achieving high planarization efficiency and excellent surface integrity, offering practical guidance for next-generation copper interconnect fabrication.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101322"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomimetic structures for water management in proton exchange membrane fuel cells: A review 质子交换膜燃料电池水管理的仿生结构研究进展

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-02-09 DOI: 10.1016/j.ijoes.2026.101319

Zengsheng Wang , Jingwen Yang , Hongyan Wang , Na Xiao , Ansheng Li , Ruili Wang , Wuyi Ming

{"title":"Biomimetic structures for water management in proton exchange membrane fuel cells: A review","authors":"Zengsheng Wang , Jingwen Yang , Hongyan Wang , Na Xiao , Ansheng Li , Ruili Wang , Wuyi Ming","doi":"10.1016/j.ijoes.2026.101319","DOIUrl":"10.1016/j.ijoes.2026.101319","url":null,"abstract":"<div><div>Water management in proton exchange membrane fuel cells (PEMFCs) is a critical factor affecting performance metrics such as power density, and plays a vital role in the service life and durability of the proton exchange membrane. By emulating biological designs, biomimetic technique has driven the development of novel materials and structures for fuel cells, propelling their innovation and sustainable development. This study systematically reviews the progress from biomimetic innovations to their engineering applications within the field of water management for PEMFCs. Then, this review sequentially explores: biomimetic flow field designs based on leaf vein/root system fractal theory; biomimetic gas diffusion layer (GDL) structures; and biomimetic catalyst layer and membrane designs enabling molecular-scale water management. By comparing the advantages and limitations of different biomimetic strategies in transport efficiency, drainage capacity, and stability, this study reveals the potential value of biomimetic approaches in improving water management performance in fuel cells. In view of the remaining challenges associated with manufacturing complexity, durability assessment, and scalable fabrication of biomimetic structures, this work further points out that future research may build on the synergy among materials science, biology, and advanced manufacturing technologies, while introducing data-driven methods as auxiliary tools to support the optimized design and performance evaluation of biomimetic structures.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101319"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SOC-SOH co-estimation across the battery life cycle using a simplified electrochemical model with adaptive parameter updating and LSTM 基于自适应参数更新和LSTM的简化电化学模型的电池寿命周期SOC-SOH共估计

IF 2.4 4区化学

International Journal of Electrochemical Science Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.ijoes.2026.101300

Dianliang Yang , Nailiang Qi , Mingying Huo , Yijiao Liu , Chao Lyu , Mengda Duan

{"title":"SOC-SOH co-estimation across the battery life cycle using a simplified electrochemical model with adaptive parameter updating and LSTM","authors":"Dianliang Yang , Nailiang Qi , Mingying Huo , Yijiao Liu , Chao Lyu , Mengda Duan","doi":"10.1016/j.ijoes.2026.101300","DOIUrl":"10.1016/j.ijoes.2026.101300","url":null,"abstract":"<div><div>As a core function of the battery management system, state of charge (SOC) estimation has been the focus of investigation. However, previous research does not adequately consider the bidirectional interference effect between battery state of health (SOH) and SOC estimation. This leads to an increase in the error in SOC estimation after battery aging. The role of bidirectional interference is addressed by a hybrid algorithmic framework that updates the battery model parameters and co-estimates SOC/SOH. Specifically, a simplified electrochemical model (SEM) with online parameter update is first constructed in this paper, and the SOC estimation algorithm is built based on this model with the EKF algorithm. The SEM parameters are updated with the help of parameter sensitivity analysis. Subsequently, a battery SOH estimation model is built using the long short-term memory (LSTM) algorithm. It should be noted that the LSTM algorithm uses voltage and current data from the battery when its SOC is between 20% and 80%. Finally, a hybrid SOC/SOH estimation framework with multi-time scale update is constructed. Based on the method proposed in this paper, the SOC estimation error under the New European Driving Cycle (NEDC) working condition throughout the life cycle of the lithium-ion battery is less than 0.8%.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"21 4","pages":"Article 101300"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0