Electrochimica Acta最新文献

{"title":"Effect of oxygen inlet configurations on transport behavior in the porous transport layer of PEM water electrolyzers","authors":"Linfeng Zang, Zhen Li, Yuanhui Wang, Lu Liu","doi":"10.1016/j.electacta.2026.150075","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.150075","url":null,"abstract":"Oxygen transport in liquid water within the anode porous transport layer (PTL) of proton exchange membrane water electrolyzers is investigated using a multicomponent multiphase lattice Boltzmann model. The evolution of oxygen invasion pathways, breakthrough behavior, and oxygen distribution is analyzed, and the effects of inlet coverage, inlet velocity, inlet location, and multiple-inlet spacing are discussed. The results show that oxygen preferentially invades regions with larger pore throats, consistent with strong capillary control. Breakthrough times are highly nonuniform across the titanium layers. As inlet coverage increases, breakthrough time first decreases and then increases because of the combined effects of inlet velocity and changes in the preferred pathway cross-section. Smaller inlet spacing promotes pathway overlap and shortens breakthrough time, whereas larger spacing weakens pathway interaction and makes transport increasingly dominated by a single preferential pathway.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"1 1","pages":"150075"},"PeriodicalIF":6.6,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149086148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel PPy@PI composite with multi-interface synergistic effect for ultra-long cycling dual-ion batteries","authors":"Keyan Zeng, Rengui Xiao, Song Liu, Jie Chen, Xiaonan Lv, Yu Kuang, Yu Huang, Xiang Ke, Keliang Wang","doi":"10.1016/j.electacta.2026.149611","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149611","url":null,"abstract":"Organic electrode materials are regarded as ideal energy storage materials due to their advantages such as abundant resources, flexible structures, designability, and sufficient active sites. However, their high solubility, poor electrical conductivity, and inferior long-term cycling performance restrict their practical applications in secondary batteries. Herein, a composite organic electrode material is prepared using p-type polypyrrole (PPy) and n-type polyimide (PI) (PPy@PI) for dual-ion batteries (DIBs). The study investigates the mechanism by which the composite electrode material influences the long-term cycling performance of DIBs. The research findings suggest that the constructed DIB enables the PI in the anode to react with cations during charging, and a portion of the anions are inserted into the anode to react with PPy during discharging. Through density functional theory (DFT) calculations, it is found that in the PPy@PI composite, a synergistic effect is formed between the p-type and n-type materials. This synergistic effect enhances ionic conductivity, improves rate performance, and significantly promotes the long-term cycling performance of organic DIBs. The electrochemical performance test results show that the PPy@PI/1-Ethyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)-imide (EMImTFSI)/natural graphite (NG) battery exhibits excellent long-term cycling performance. After 17,000 cycles at 2 C, the capacity retention rate remains at 69.61 % of the peak capacity (103 mAh g<ce:sup loc=\"post\">−1</ce:sup>). By analyzing the structure of the composite and the kinetic processes of the electrode reaction, we discover that the electrochemical activity of PPy is progressively activated during the charge-discharge processes. The electrochemical reaction of PI is promoted synergistically by this activation process, which enhances the cycling performance of the PPy@PI composite material. The paper proposes a novel mechanism for organic electrode material with ultra-long cycling performance in DIBs.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"278 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantification and Deconvolution of Gas Diffusion and Conversion Losses in Solid Oxide Single-Cell Testing","authors":"D. Esau, D. Ewald, C. Grosselindemann, A. Weber","doi":"10.1016/j.electacta.2026.149566","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149566","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"11 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148461257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoding the roles of applied stress and exposed area ratio in the galvanic corrosion of N80 carbon steel and 13Cr stainless steel in supercritical CO2 environment","authors":"C.Y. Si, Y.Y. Li, J.M. Duan, Sarfaraz Khan, H. Guan, G.A. Zhang","doi":"10.1016/j.electacta.2026.149537","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149537","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"39 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148461169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetic analysis of surface two-electrons transfer processes by using a Marcus-Hush-Chidsey formalism","authors":"Manuela López-Tenés, Eduardo Laborda, Angela Molina, Joaquin Gonzalez","doi":"10.1016/j.electacta.2026.149524","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149524","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"262 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148461014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Influence of unique structural features of multicopper oxidase CueO on halide sensitivity” [Electrochimica Acta 574 (2026) 149390]","authors":"Vita Saska, Umberto Contaldo, Elisabeth Lojou, Ievgen Mazurenko","doi":"10.1016/j.electacta.2026.149442","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149442","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"2 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148461018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WITHDRAWN: Solvent Driven Spontaneous Reduction of Fe(III) Porphyrins under CO: a Mechanistic and Spectroscopic Study","authors":"Aude Salamé, Mun Hon Cheah, Julien Bonin, Marc Robert, Elodie Anxolabéhère-Mallart","doi":"10.1016/j.electacta.2026.149381","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149381","url":null,"abstract":"This article has been withdrawn at the request of the author(s) and/or editor due to an error in the publishing process. The Publisher apologizes for any inconvenience this may cause.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"52 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Magnetic field weakening carrier secondary recombination in/on amorphous Co0.07Fe0.93Ox co-catalysts to boost BiVO4/Co0.07Fe0.93Ox film photoanodes for solar water splitting” [Electrochimica Acta 572 (2026) 149211]","authors":"Yujie Huang, Jinyan Du, Xianchun Jin, Jiahe Li, Lingling Liao, Tao Han, Gaili Ke, Huichao He","doi":"10.1016/j.electacta.2026.149283","DOIUrl":"https://doi.org/10.1016/j.electacta.2026.149283","url":null,"abstract":"","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"38 1","pages":"149283"},"PeriodicalIF":6.6,"publicationDate":"2026-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148290159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational design of magnetron sputtering modification strategies to unlock the cycle reversibility and rate capability of LiMn0.8Fe0.2PO4 cathodes","authors":"Jinjie Niu ,&nbsp;Yan Wang ,&nbsp;Wenbin Fu ,&nbsp;Ling Tan ,&nbsp;Jiahui Dai ,&nbsp;Zhenghua Deng ,&nbsp;Ziyuan Liu ,&nbsp;Faquan Yu","doi":"10.1016/j.electacta.2026.148476","DOIUrl":"10.1016/j.electacta.2026.148476","url":null,"abstract":"<div><div>Compared to commercial LiFePO₄ (LFP) cathode materials, manganese-based olivine material LiMn_0.8Fe_0.2PO₄ (LMFP) has garnered greater attention due to its comprehensive enhancement of battery performance, particularly achieving significant breakthroughs in energy density. However, its rate performance and cycle life are limited by low charge conduction and Jahn-Teller distortion of Mn³⁺. To address these issues, this study employed radio-frequency magnetron sputtering to deposit LiPON, ZnO, and Li₃PO₄ films on LMFP electrodes for comparison. The results demonstrate that the cross-linked network structure formed by nitrogen bidentate and tridentate bonds in LiPON enhances ionic conductivity and interfacial stability. Increasing the LiPON coating layer to 2.4 nm resulted in optimal electrochemical performance of the LiMn_0.8Fe_0.2PO₄ cathodes. The initial discharge capacity was 156.9 mAh g^-1 at a rate of 0.1C. The capacities measured during multi-rate charge-discharge experiments at rates ranging from 0.1C to 5C were 147.8 mAh g^-1, 141.2 mAh g^-1, and 122.7 mAh g^-1 at 1C, 2C, and 5C, respectively. There was very little capacity loss when the rate was brought back to 0.1C. Capacity retention rose from 88.0% to 95.7% after 100 cycles at 0.5C. LMFP-LiPON materials have better transition metal states close to the Fermi level and lower band gaps, according to density functional theory (DFT) simulations. In addition to increasing electronic conductivity, accelerating lithium-ion transport, and improving corrosion resistance, these changes significantly reduce the Li migration barrier. The approach offers a strong and adaptable lever for designing lithium-ion batteries of the future.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"557 ","pages":"Article 148476"},"PeriodicalIF":5.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D star-shaped morphological modify carbon-nitrogen compounds of zeolitic imidazolate frameworks for Microsupercapacitors","authors":"Dan Tu ,&nbsp;Ming Chen ,&nbsp;Yue Guo ,&nbsp;Shuaichao Mao ,&nbsp;Yu Shi ,&nbsp;Le Yuan ,&nbsp;Qifeng Pan ,&nbsp;Jianhua Xu ,&nbsp;Daniel H.C. Chua","doi":"10.1016/j.electacta.2026.148383","DOIUrl":"10.1016/j.electacta.2026.148383","url":null,"abstract":"<div><div>To enhance supercapacitor performance, it is crucial to design electrode materials that are abundant in active sites and incorporate specific functional groups to facilitate rapid ion transport. This study demonstrates the synthesis of star-shaped CoZn-ZIFs using a green method. The derived CoZn-NCs exhibit a wealth of effective functional groups, achieved through the rational tuning of elemental proportions and calcination temperatures. When utilized as a supercapacitor electrode, the Co₁Zn₁-NCs/550 electrode attained a specific capacitance of 928 F g⁻¹ at a current density of 0.1 A g⁻¹. Density functional theory (DFT) results further reveal a narrow energy band, suggesting that CoZn-NCs possess good conductivity. A solid-state flexible micro-supercapacitor was constructed using the Co₁Zn₁-NCs/550 electrode material. This device exhibited an area capacitance of 637.5 mF cm⁻² accompanied by remarkable electrochemical durability with 97% capacitance retention performance after 5000 cycles at a current density of 1 mA cm⁻². Furthermore, devices connected in series and/or parallel successfully powered light-emitting diodes for several minutes, as demonstrated in a video recording, confirming their potential for practical applications. This work offers promising insights into enhancing energy storage.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"557 ","pages":"Article 148383"},"PeriodicalIF":5.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}