Journal of Power Sources最新文献

Enhancing lithium-ion battery performance through a multi-benefit fluorinated electrolyte 通过多效氟化电解质提高锂离子电池性能

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-19 DOI: 10.1016/j.jpowsour.2025.238263

Alexei V. Petrovichev , Irina V. Kutovaya , Gayane A. Kirakosyan , Dmitry A. Cheshkov , Egor M. Pazhetnov , Victoria A. Nikitina , Stanislav S. Fedotov , Olga I. Shmatova

{"title":"Enhancing lithium-ion battery performance through a multi-benefit fluorinated electrolyte","authors":"Alexei V. Petrovichev , Irina V. Kutovaya , Gayane A. Kirakosyan , Dmitry A. Cheshkov , Egor M. Pazhetnov , Victoria A. Nikitina , Stanislav S. Fedotov , Olga I. Shmatova","doi":"10.1016/j.jpowsour.2025.238263","DOIUrl":"10.1016/j.jpowsour.2025.238263","url":null,"abstract":"<div><div>Advanced electrolytes are essential for extending the operational voltage and cycle life of lithium-ion batteries (LIBs) to meet the demands of high-energy applications and enhance safety. Here, we report the design and development of a non-flammable 1M LiPF<sub>6</sub> electrolyte based on methyl 3,3,3-trifluoropropionate (MTFP) and fluoroethylene carbonate (FEC). This electrolyte enables stable cycling of high-voltage graphite||NMC811 LIBs up to 4.5 V, thereby significantly exceeding the voltage limits of conventional carbonate-based electrolytes. Commercial-scale 2.1 Ah pouch cells with a high active material loading (3.8 mA h/cm<sup>2</sup>) retain 72 % of their initial capacity for over 1000 cycles at 0.5C (2.7–4.45 V). This enhanced performance and cycling stability are attributed to the formation of a protective LiF passivation layer on both the cathode and anode surfaces, as revealed by X-ray photoelectron spectroscopy. These findings highlight the viability of MTFP-based electrolytes for next-generation LIBs with higher energy density and extended cycle life.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238263"},"PeriodicalIF":7.9,"publicationDate":"2025-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323340","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

Tuning the electrochemical performance of graphene via covalent surface functionalization using silane coupling agent and incorporation of acid-modified multi-walled carbon nanotube for high energy and high power supercapacitor application 通过硅烷偶联剂的共价表面功能化和酸修饰多壁碳纳米管的掺入来调节石墨烯的电化学性能，用于高能高功率超级电容器的应用

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238622

Sreelakshmi Rajeevan , Sam John , Deepalekshmi Ponnamma , Soney C. George

{"title":"Tuning the electrochemical performance of graphene via covalent surface functionalization using silane coupling agent and incorporation of acid-modified multi-walled carbon nanotube for high energy and high power supercapacitor application","authors":"Sreelakshmi Rajeevan , Sam John , Deepalekshmi Ponnamma , Soney C. George","doi":"10.1016/j.jpowsour.2025.238622","DOIUrl":"10.1016/j.jpowsour.2025.238622","url":null,"abstract":"<div><div>The covalent functionalization of the graphene surface is successfully employed using a silane coupling agent, 3-aminopropyl trimethoxy silane (APTMS). The silane modification increased the interlayer spacing between the rGO layers. The composite electrode loaded with 1.5 g APTMS displayed 97.3 % pseudocapacitance, implying the successful silylation of the oxygenated functional groups on the graphene structure. The silylation imparts a sheet-like internal morphology with sharp edges to rGO's morphology. Among binary electrodes, Si-rGO with 20 wt% loading of acid-treated multi-walled carbon nanotubes (A-CNT) (PSRC20 binary electrodes) show excellent electrochemical properties and the highest specific capacitance. PSRC20 binary electrode displayed 82.6 % pseudocapacitance. A uniform dispersion of A-CNT in the silane-modified rGO matrix is revealed in the TEM micrographs. A specific capacitance of 225.8 F/g is obtained for the aqueous symmetric supercapacitor assembled using the PSRC20 binary electrode. Cycling performance evaluation over 2000 charge-discharge cycles at a current of 0.03 A showed that the device maintained 95 % of its initial capacitance and achieved a coulombic efficiency of 98 %. The perceived specific energy and specific power are 31.4 Wh/kg and 1714 W/kg at a current of 0.03 A. The fabricated pseudocapacitor is highly efficient in high-current applications, providing high energy density.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238622"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322663","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

Production of battery grade power materials from spent lithium iron phosphate (LiFePO4) batteries 利用废旧磷酸铁锂（LiFePO4）电池生产电池级动力材料

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238615

Rukshana Parween , Ankur Sharma , Karina Rani , Apurva Aditi , Balram Ambade , Manis Kumar Jha

{"title":"Production of battery grade power materials from spent lithium iron phosphate (LiFePO4) batteries","authors":"Rukshana Parween , Ankur Sharma , Karina Rani , Apurva Aditi , Balram Ambade , Manis Kumar Jha","doi":"10.1016/j.jpowsour.2025.238615","DOIUrl":"10.1016/j.jpowsour.2025.238615","url":null,"abstract":"<div><div>Lithium iron phosphate (LiFePO<sub>4</sub>) batteries have gained popularity due to their high safety and low cost. Effective recycling processes are needed to sustain indigenous material and economic benefit. In other hand, power materials are imported for the manufacturing of batteries, which compells for the development of process for recovery of the valuable metals (Fe, P, Li, Cu, and Al) from spent LFP batteries. Leaching was carried out at optimized condition using 3 % H<sub>2</sub>SO<sub>4</sub> and 5 % H<sub>2</sub>O<sub>2</sub> maintaining 100 g/L pulp density at 60 °C. 99.99 % Fe, Li, P, Al, and Cu were recovered within 60 min of mixing time. Leaching kinetics of Li followed “Chemical reaction control dense constant size cylindrical particles” model 1−(1−X)<sup>1/2</sup> = k<sub>c</sub>t, while Fe, P, Al, and Cu adhered to a “Chemical reaction control dense constant size or shrinking spheres” model 1−(1−X)<sup>1/3</sup> = k<sub>c</sub>t. Cementation was carried out using scrap iron to recover Cu at room temperature within 40 min. Fe and P were recovered as FePO<sub>4</sub> by precipitation. 99.99 % Al was precipitated using NaOH at pH 7.5, whereas 99.9 % Li was precipitated as Li<sub>2</sub>CO<sub>3</sub> and Li<sub>3</sub>PO<sub>4</sub> at pH 12 and 90 °C using Na<sub>2</sub>CO<sub>3</sub> and Na<sub>3</sub>PO<sub>4</sub>.12H<sub>2</sub>O, respectively. This process is viable for recycling LFP batteries ensuring resource recovery and environmental sustainability.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238615"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323335","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

Expediting reduction kinetics of sulfur species by defect engineering in CoP for high-performance lithium-sulfur battery 利用CoP缺陷工程加快高性能锂硫电池中硫的还原动力学

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238611

Meixiu Qu , Lin Peng , Yu Bai , Hang Li , Zhenhua Wang , Kening Sun

{"title":"Expediting reduction kinetics of sulfur species by defect engineering in CoP for high-performance lithium-sulfur battery","authors":"Meixiu Qu , Lin Peng , Yu Bai , Hang Li , Zhenhua Wang , Kening Sun","doi":"10.1016/j.jpowsour.2025.238611","DOIUrl":"10.1016/j.jpowsour.2025.238611","url":null,"abstract":"<div><div>Despite the fact that vacancy and doping engineering have been extensively used to modulate the electronic structures of metal-based compounds and thus develop advanced lithium-sulfur batteries, the intrinsic regulatory essences remain elusive. Herein, we propose a strategy of introducing Co vacancies and Ni-doped atoms into CoP to explore the modulation effect of Co vacancies and Ni-doped atoms on the electronic structure of CoP and reveal the structure-property relationships, thus achieving high-performance Li-S batteries. Systematic experiments and theoretical calculations reveal that introducing Co vacancies and doping with Ni atoms in CoP facilitates the formation of Ni-S and Li-P bonds between polysulfides and Ni-Co<sup>vac</sup>P, thereby significantly enhancing its adsorption ability. At the same time, the electron number of Li atoms near the Fermi level in the Ni-Co<sup>vac</sup>P-Li<sub>2</sub>S<sub>4</sub> system increases, which enhances redox conversion kinetics of polysulfides. Specifically, Ni-Co<sup>vac</sup>P reduces the activity energy for reduction process of sulfur species. The cell with CNT@Ni-Co<sup>vac</sup>P exhibits excellent rate capability (709 mA h g<sup>−1</sup>) and cycling stability over 700 cycles (average capacity decay of 0.04 % per cycle) at 5C. This study develops a sulfur host with exceptional adsorption and catalytic properties through vacancy and doping engineering to facilitate commercial applications of Li-S batteries.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238611"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324028","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

Dual modification of single-crystal Ni-rich cathodes for enhanced thermal safety in pouch cells 提高袋状电池热安全性的单晶富镍阴极的双重改性

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238631

Boran Tao , Zhen Wang , Zhenghua Li , Guilong Jin , Jinzhi Hu , Bingbing Wang , Wei Wu , Fengrui Zhang , Xiaodong Wu

{"title":"Dual modification of single-crystal Ni-rich cathodes for enhanced thermal safety in pouch cells","authors":"Boran Tao , Zhen Wang , Zhenghua Li , Guilong Jin , Jinzhi Hu , Bingbing Wang , Wei Wu , Fengrui Zhang , Xiaodong Wu","doi":"10.1016/j.jpowsour.2025.238631","DOIUrl":"10.1016/j.jpowsour.2025.238631","url":null,"abstract":"<div><div>The trade-off between high energy density and thermal safety in nickel-rich cathodes remains a critical challenge for lithium-ion batteries. This study presents a dual-modification strategy combining fluorine (F<sup>−</sup>) doping with LiCoO<sub>2</sub> (LCO) coating to improve the thermal stability of single-crystalline LiNi<sub>0.83</sub>Co<sub>0.12</sub>Mn<sub>0.05</sub>O<sub>2</sub> (SCNCM). We show that F<sup>−</sup> doping enhances bulk stability by substituting oxygen and forming strong TM–F and Li–F bonds, while the LCO coating suppresses interfacial side reactions. In-situ XRD and DSC-TG-MS analyses indicate that the modified material exhibits delayed phase transitions and reduced oxygen release, due to suppressed cation migration and improved oxygen lattice stability. Accelerating rate calorimetry tests confirm that pouch cells using the modified cathode achieve a 45 °C higher onset thermal runaway temperature (T<sub>2</sub>) and a 70 °C lower peak temperature (T<sub>3</sub>), along with reduced oxygen gas emission. Furthermore, the dual-modified cathode retains 91.5 % capacity after 450 cycles at 0.33C, matching the performance of pristine SCNCM without compromising rate capability. This work demonstrates the synergistic role of bulk doping and surface coating in balancing energy density and thermal safety, providing a viable approach to developing advanced Ni-rich cathodes for high-performance LIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238631"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324027","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 gas mass transfer on hydrogen production at ampere-level current densities 在安培级电流密度下气体传质对制氢的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238616

Zhisheng Mei , Tao Jiang , Yiran Teng , Hong Ping , Wenjing Li , Ejigu Alemu Guadie , Fei Teng

{"title":"Effect of gas mass transfer on hydrogen production at ampere-level current densities","authors":"Zhisheng Mei , Tao Jiang , Yiran Teng , Hong Ping , Wenjing Li , Ejigu Alemu Guadie , Fei Teng","doi":"10.1016/j.jpowsour.2025.238616","DOIUrl":"10.1016/j.jpowsour.2025.238616","url":null,"abstract":"<div><div>Water electrolysis driven by renewable energy sources is a green, sustainable hydrogen production method. However, industrial hydrogen production via water electrolysis is challenged by its high cost, high energy consumption and low conversion efficiency. It is urgently necessary to develop efficient, stable, and inexpensive electrocatalysts at ampere-level current densities. In this study, we mainly reveal the gas mass transfer effect under ampere-level current densities during water electrolysis. Typically, we synthesize FeNi-MOF through a simple method. Meanwhile, the Fe<sub>1</sub>Ni<sub>1</sub>P-C electrocatalyst is synthesized through phosphidation of the FeNi-MOF precursor. The Fe<sub>1</sub>Ni<sub>1</sub>P-C electrocatalyst demonstrates an excellent electrocatalytic activity in alkaline electrolyte: for the hydrogen evolution reaction (HER), η<sub>10</sub> = 118.2 mV, η<sub>1000</sub> = 301.2 mV, and Tafel slope = 72.44 mV dec<sup>−1</sup>; for the oxygen evolution reaction (OER), η<sub>10</sub> = 90.8 mV, η<sub>1000</sub> = 332.3 mV, and Tafel slope = 68.69 mV dec<sup>−1</sup>. Moreover, Fe<sub>1</sub>Ni<sub>1</sub>P-C exhibits a high stability at a large current density (110 h @ 1000 mA cm<sup>−2</sup>). Density functional theory (DFT) calculations confirm that the components of Fe<sub>1</sub>Ni<sub>1</sub>P-C exhibit gas-phobic behavior toward H<sub>2</sub> and O<sub>2</sub> molecules, effectively suppressing gas bubble accumulation on electrode surfaces and thereby facilitating continuous and steady reactions. This study presents a material design method that effectively enhances stability under high current density through the presence of a gas-repelling structure.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238616"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323286","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

N doping promotes the multiplication capability and cycling stability of cobalt-free lithium-rich layered cathode materials N掺杂提高了无钴富锂层状正极材料的倍增能力和循环稳定性

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238623

Yu-Long Cao, Zheng Chen, Peng Liu, Yu-Long Xie

{"title":"N doping promotes the multiplication capability and cycling stability of cobalt-free lithium-rich layered cathode materials","authors":"Yu-Long Cao, Zheng Chen, Peng Liu, Yu-Long Xie","doi":"10.1016/j.jpowsour.2025.238623","DOIUrl":"10.1016/j.jpowsour.2025.238623","url":null,"abstract":"<div><div>Cobalt-free lithium-rich layered oxides (LLOs) become a new hotspot in energy storage science due to their high specific capacity and high voltage. However, challenges such as the dissolution and depletion of transition metals, cycling instability due to irreversible oxygen release, and structural transformations hinder their commercial application. In this study, Li<sub>1.2</sub>Mn<sub>0.6</sub>N<sub>x</sub>Ni<sub>0.2</sub>O<sub>2</sub> (x = 0, 0.01, 0.02, 0.03) is synthesized by de-doping the substrate material with varying amounts of N using carbonate co-precipitation and high-temperature solid-phase methods. The cathode material doped with 2 % N exhibits the best electrochemical performance. This improvement is attributed to the introduction of N, which occupies oxygen sites, enlarges the lattice spacing, mitigates the mixing of Li<sup>+</sup>/Ni<sup>2+</sup> in the material, and enhances lattice oxygen content. This leads to better cycling stability and excellent performance during multiple cycles. The modified sample shows a 27.18 % increase in capacity retention after 0.1C 100-cycle testing, and voltage decay during cycling is limited to only 0.342V. The study introduces a novel approach for anion doping to develop high-performance, cobalt-free, lithium-rich manganese-based cathode materials with enhanced discharge efficiency and cycling stability.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238623"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323290","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 fast fixed-point solution framework for the P2D model of lithium-ion batteries 锂离子电池P2D模型的快速定点解决框架

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-18 DOI: 10.1016/j.jpowsour.2025.238591

Yang Li, Torsten Wik, Qingbo Zhu, Yicun Huang, Yao Cai, Changfu Zou

{"title":"A fast fixed-point solution framework for the P2D model of lithium-ion batteries","authors":"Yang Li, Torsten Wik, Qingbo Zhu, Yicun Huang, Yao Cai, Changfu Zou","doi":"10.1016/j.jpowsour.2025.238591","DOIUrl":"10.1016/j.jpowsour.2025.238591","url":null,"abstract":"<div><div>This paper presents a novel algorithmic framework for efficiently solving the pseudo-two-dimensional (P2D) model of lithium-ion batteries. The proposed approach reformulates the original P2D model, typically expressed as a system of coupled nonlinear partial differential–algebraic equations, into a system of quasilinear <em>partial integro-differential equations (PIDEs)</em>. Through this reformulation, intermittent algebraic states, such as local potential and current terms, are effectively eliminated, thereby reducing the model complexity. This enables the identification of a generic fixed-point iterated function for solving the P2D model’s nonlinear algebraic equations. To implement this iterated function, the finite volume method is employed to spatially discretize the PIDE system into a system of ordinary differential equations. An implicit–explicit (IMEX) time integration scheme is adopted, and the resulting quasilinear structure facilitates the development of a single-step numerical integration scheme that admits a closed-form update, providing stable, accurate, and computationally efficient solutions. Unlike traditional gradient-based approaches, the proposed framework does not require the Jacobian matrix and is insensitive to the initial guess error of the solution, making it easier to implement and more robust in practice. Due to its significantly reduced computational cost, the proposed framework is particularly well-suited for simulating large-scale battery systems operated under advanced closed-loop control strategies.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238591"},"PeriodicalIF":7.9,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145323337","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

Degradation of solid oxide electrolysis stacks in seawater and deionized water electrolysis 固体氧化物电解堆在海水和去离子水电解中的降解

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238627

Zhao Liu , Anqi Wu , Junkang Sang , Beibei Han , Yang Zhang , Wanbing Guan

{"title":"Degradation of solid oxide electrolysis stacks in seawater and deionized water electrolysis","authors":"Zhao Liu , Anqi Wu , Junkang Sang , Beibei Han , Yang Zhang , Wanbing Guan","doi":"10.1016/j.jpowsour.2025.238627","DOIUrl":"10.1016/j.jpowsour.2025.238627","url":null,"abstract":"<div><div>Solid oxide electrolysis cells(SOECs) provide an efficient solution for seawater electrolysis. The electrolysis stack is the core component of a SOEC system. A comprehensive understanding of degradation mechanisms of the stack when operated in a seawater environment is crucial for optimizing its application. This study conducts a comparative analysis of the performance of SOEC stacks in seawater versus deionized water. The findings indicate that, while the initial instantaneous performances of the stacks are similar in both environments, significant differences emerge during prolonged operation. Over a 500-h stable operation period, the overall degradation rates of the electrolysis stacks were found to be 6.7 % in deionized water, compared to 12.3 % in seawater, indicating that the stacks and their components experience more substantial degradation when exposed to seawater. Notably, a more pronounced loss of nickel from the hydrogen electrode of the cells. Which may be the major reasons for the larger degradation of performance. This work provides valuable insights for the research and application of solid oxide electrolysis cells in seawater hydrogen production.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238627"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322675","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 Nb and Y co-doping on the layered perovskite cathode of protonic ceramic fuel cells 铌钇共掺杂对质子陶瓷燃料电池层状钙钛矿阴极的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2025-10-17 DOI: 10.1016/j.jpowsour.2025.238618

Tang Sheng, Feng Zhu, Mingjian Zhong, Junwei Zeng, Yixuan Huang, Jiacheng Zeng, Wanbin Lin, Wenjie Gong, Jiaojiao Xia, Hao Liu, Li Zhang, Chuqian Jian, Yu Chen

{"title":"Effect of Nb and Y co-doping on the layered perovskite cathode of protonic ceramic fuel cells","authors":"Tang Sheng, Feng Zhu, Mingjian Zhong, Junwei Zeng, Yixuan Huang, Jiacheng Zeng, Wanbin Lin, Wenjie Gong, Jiaojiao Xia, Hao Liu, Li Zhang, Chuqian Jian, Yu Chen","doi":"10.1016/j.jpowsour.2025.238618","DOIUrl":"10.1016/j.jpowsour.2025.238618","url":null,"abstract":"<div><div>To address the performance bottleneck of protonic ceramic fuel cells (PCFCs) associated with sluggish oxygen reduction reaction (ORR) kinetics, this study explores the co-doping effect of Nb and Y in layered perovskite oxides to develop an efficient and stable cathode. A series of PrBa<sub>0.9</sub>Co<sub>1.96</sub>Nb<sub>x</sub>Y<sub>0.04-x</sub>O<sub>5+δ</sub> (x = 0, 0.01, 0.02, 0.03, and 0.04) cathode materials were synthesized via a sol-gel method and systematically evaluated. Among them, the optimized cathode material PrBa<sub>0.9</sub>Co<sub>1.96</sub>Nb<sub>0.01</sub>Y<sub>0.03</sub>O<sub>5+δ</sub> with x = 0.01 (PBCNb<sub>0.01</sub>Y<sub>0.03</sub>) demonstrates enhanced surface oxygen vacancy concentration, higher Co<sup>4+</sup> content, and improved catalytic ORR activity. The PBCNb<sub>0.01</sub>Y<sub>0.03</sub> cathode exhibits a reduced polarization resistance across 700–550 °C compared to its counterparts. Co-doping of Nb and Y optimizes the processes of charge transfer, oxygen adsorption/dissociation, and ion migration, as suggested by the distribution of relaxation time (DRT) analysis. A peak power density of 2.23 W cm<sup>−2</sup> is achieved at 700 °C from the single cell with PBCNb<sub>0.01</sub>Y<sub>0.03</sub> cathode, outperforming most reported cathodes with similar architectures. Additionally, a promising electrochemical stability over extended operation (100 h) is demonstrated at 0.5 A cm<sup>−2</sup>.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"661 ","pages":"Article 238618"},"PeriodicalIF":7.9,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145322668","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