Journal of Power Sources最新文献_第9页

A switching-based hybrid estimator with dynamic capacity adaptation for robust state of charge estimation of LiFePO4 batteries 一种基于开关的动态容量自适应混合估计器用于LiFePO4电池的鲁棒充电状态估计

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239604

Zhongxian Wang , Xinyu Sun , Zhenshan Zhang , Yingrun Wang , Shuli Sun

{"title":"A switching-based hybrid estimator with dynamic capacity adaptation for robust state of charge estimation of LiFePO4 batteries","authors":"Zhongxian Wang , Xinyu Sun , Zhenshan Zhang , Yingrun Wang , Shuli Sun","doi":"10.1016/j.jpowsour.2026.239604","DOIUrl":"10.1016/j.jpowsour.2026.239604","url":null,"abstract":"<div><div>Accurate estimation of state of charge (SOC) for lithium iron phosphate (LiFePO<sub>4</sub>) batteries remains challenging due to cumulative errors from uncertain initial conditions and aging-induced capacity fade, which are often addressed in isolation by existing methods. To bridge this gap, this study proposes a novel switching-sequential hybrid framework (II–Ah) which synergistically integrates: (1) a threshold-triggered switching logic that seamlessly transitions from Unscented Kalman Filter (UKF)-based observer (for rapid initial optimization) to low-complexity ampere-hour integration, ensuring both high accuracy and computational efficiency; (2) a real-time capacity update mechanism, driven by an internal-resistance-based state of health estimator, that continuously compensates for capacity degradation without requiring offline intervention; and (3) the unified coordination of both mechanisms. Validated using offline measured data in MATLAB over 100 cycles, the proposed II–Ah estimator achieves a mean absolute error of 1.10% and a root mean squared error of 1.70% for a 2Ah battery. Its robustness and scalability are further demonstrated for 2Ah and 16Ah batteries via high-fidelity COMSOL–MATLAB co-simulation platform, maintaining estimation errors below 2% under dynamic operating conditions. This work presents a computationally efficient and adaptive solution, effectively mitigating the dual challenges of initial inaccuracy and capacity degradation for practical battery management systems.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239604"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186582","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

Decoupling activation from passivation in high-rate Li-rich Mn-based layered oxides through the construction of a conductive LiFePO4 island architecture 通过构建导电LiFePO4岛状结构，在高速率富锂锰基层状氧化物中实现钝化解耦活化

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239599

Eunki Kim , Joo-Hyung Kim , Joon Ha Chang , Juhyoung Kim , Jun Ho Shin , Junhee Lee , Garam Lee , Ho Jin Lee , Kwangjin Park , Dong Wook Kim , San Moon

{"title":"Decoupling activation from passivation in high-rate Li-rich Mn-based layered oxides through the construction of a conductive LiFePO4 island architecture","authors":"Eunki Kim , Joo-Hyung Kim , Joon Ha Chang , Juhyoung Kim , Jun Ho Shin , Junhee Lee , Garam Lee , Ho Jin Lee , Kwangjin Park , Dong Wook Kim , San Moon","doi":"10.1016/j.jpowsour.2026.239599","DOIUrl":"10.1016/j.jpowsour.2026.239599","url":null,"abstract":"<div><div>Although Li-rich Mn-based layered oxides (LMRs) exhibit high specific capacities (>250 mAh g<sup>−1</sup>) through anionic redox activity and are therefore promising next-generation cathode materials for high-energy Li-ion batteries, their commercialization is severely hindered by voltage fading, structural degradation, and safety concerns arising from surface instability. To address these problems, we deposited an insular protective layer of carbon-coated LiFePO<sub>4</sub> (C-LFP) nanoparticles on LMR secondary particles using a scalable solvent-free mechanofusion strategy. The optimal coating (C-LFP loading = 0.75 wt%) notably enhanced electrochemical performance, resulting in a capacity retention of 60.7% at 3C (cf. 38% for pristine LMR) and 93.43% after 200 cycles at 0.5C while suppressing voltage fading. According to the proposed synergistic mechanism, C-LFP provided electronic conductivity exceeding that of bare LMR, the insular morphology preserved direct electron transport pathways, and the nanoscale C-LFP particle size enabled rapid Li-ion transport and shortened diffusion lengths. The C-LFP coating prevented the formation of highly resistive rock-salt degradation layers, maintained a low interfacial impedance, and suppressed Mn dissolution (>95% reduction) and O<sub>2</sub> evolution. Thus, this work demonstrates that rationally designed surface modification can unlock the full potential of LMR cathodes for next-generation energy storage applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239599"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186926","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

Interface-engineered Co3Se4-MoSSe composites for efficient bifunctional acidic and alkaline water splitting 界面工程Co3Se4-MoSSe复合材料的高效双功能酸性和碱性水分解

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239506

S. Sumanth Dongre , P.J. Akash , M. Pratheeksha , M. Faisal , Jahir Ahmed , Farid A. Harraz , R. Geetha Balakrishna , R. Shwetharani

{"title":"Interface-engineered Co3Se4-MoSSe composites for efficient bifunctional acidic and alkaline water splitting","authors":"S. Sumanth Dongre , P.J. Akash , M. Pratheeksha , M. Faisal , Jahir Ahmed , Farid A. Harraz , R. Geetha Balakrishna , R. Shwetharani","doi":"10.1016/j.jpowsour.2026.239506","DOIUrl":"10.1016/j.jpowsour.2026.239506","url":null,"abstract":"<div><div>Developing efficient, low-cost and robust electrocatalysts for water splitting is critical to sustainable hydrogen production. This study reports a novel ternary bimetallic chalcogenide system based on Co and Mo, combined with sulfur and selenium, synthesized via a one-step hydrothermal route. Among the synthesized compositions, Co<sub>0.5</sub>Mo<sub>0.5</sub>SSe exhibited outstanding bifunctional catalytic activity for both hydrogen evolution (HER) and oxygen evolution reactions (OER). Structural, morphological and electrochemical analyses confirmed the formation of a Co<sub>3</sub>Se<sub>4</sub>/MoSSe composite with uniform composition, mixed phases and high electrocatalytic surface area. In acidic media, Co<sub>0.5</sub>Mo<sub>0.5</sub>SSe showed excellent HER activity with a low overpotential of 150 mV at 10 mA cm<sup>−2</sup>, a Tafel slope of 47.9 mV dec<sup>−1</sup>, and low charge transfer resistance (36.5 Ω). In alkaline medium, it achieved overpotentials of 466.6 mV (HER) and 395 mV (OER) at 10 mA cm<sup>−2</sup>, with Tafel slopes of 89.6 and 118.7 mV dec<sup>−1</sup>, respectively, maintaining stability for 12 h. A two-electrode Co<sub>0.5</sub>Mo<sub>0.5</sub>SSe/NF||Co<sub>0.5</sub>Mo<sub>0.5</sub>SSe/NF system in 1 M KOH enabled overall water splitting at 1.60 V and 1.96 V for 10 and 50 mA cm<sup>−2</sup>, respectively, sustaining activity for 24 h. The synergy between Co<sub>3</sub>Se<sub>4</sub> and MoSSe enhances electron transport, highlighting Co<sub>0.5</sub>Mo<sub>0.5</sub>SSe as a promising bifunctional electrocatalyst for practical water electrolysis.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239506"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186889","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

Engineering FeS2–incorporated tin foils via accumulative roll bonding: Soft–hard synergy for high-performance lithium-ion anodes 工程fes2集成锡箔通过累积轧制键合：软硬协同高性能锂离子阳极

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239597

Ha Tran Huu , To Giang Tran , Phi N. Nguyen , Tri Nguyen Ngoc , Mai Mai , Tuan Loi Nguyen , Thuy-An Nguyen , Kim Nguyen Van , Minh Thu Nguyen , Tuyen Huynh Thi Kim , Van Man Tran , Vu Quoc Trung , Luc Huy Hoang , Vien Vo , Hung Nguyen Phi

{"title":"Engineering FeS2–incorporated tin foils via accumulative roll bonding: Soft–hard synergy for high-performance lithium-ion anodes","authors":"Ha Tran Huu , To Giang Tran , Phi N. Nguyen , Tri Nguyen Ngoc , Mai Mai , Tuan Loi Nguyen , Thuy-An Nguyen , Kim Nguyen Van , Minh Thu Nguyen , Tuyen Huynh Thi Kim , Van Man Tran , Vu Quoc Trung , Luc Huy Hoang , Vien Vo , Hung Nguyen Phi","doi":"10.1016/j.jpowsour.2026.239597","DOIUrl":"10.1016/j.jpowsour.2026.239597","url":null,"abstract":"<div><div>Tin foil electrodes offer high alloying capacity and facile fabrication, making them attractive for next-generation lithium-ion batteries. Here, we present a novel Sn/FeS<sub>2</sub> composite foil prepared via a facile accumulative roll-bonding (ARB) technique, where hard FeS<sub>2</sub> particles are embedded into soft Sn, inducing a controlled microporous structure and refined Sn grains. This unique combination creates a mechanically robust, conductive scaffold that balances structural flexibility with electronic connectivity, thereby enhancing Li<sup>+</sup> diffusion and stabilizing the solid-electrolyte interphase, as confirmed by ex situ X-ray photoelectron spectroscopy. Additionally, density functional theory calculations further reveal that FeS<sub>2</sub> promotes lithium adsorption and accelerates charge transfer, synergistically improving electrochemical kinetics. Optimized at 3 wt% FeS<sub>2</sub>, the composite foil delivers a full-cell volumetric capacity of 205.3 mAh cm<sup>−3</sup> after 60 cycles, 1.7 times higher than pristine Sn foil. This work demonstrates that integrating soft and hard materials via ARB provides a versatile strategy for designing high-performance, mechanically resilient anodes.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239597"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186925","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

Functional mechanisms and interfacial reactions of electrically conductive primer in dry-process electrode for lithium-ion capacitors 锂离子电容器干法电极导电底漆的作用机理及界面反应

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239588

Dehong Xu , Yu Sun , Keliang Zhang , Yongqin Han , Xianzhong Sun , Xiong Zhang , Kai Wang , Yanwei Ma

{"title":"Functional mechanisms and interfacial reactions of electrically conductive primer in dry-process electrode for lithium-ion capacitors","authors":"Dehong Xu , Yu Sun , Keliang Zhang , Yongqin Han , Xianzhong Sun , Xiong Zhang , Kai Wang , Yanwei Ma","doi":"10.1016/j.jpowsour.2026.239588","DOIUrl":"10.1016/j.jpowsour.2026.239588","url":null,"abstract":"<div><div>Dry-process electrode technology represents a promising solvent-free manufacturing method, utilizing polytetrafluoroethylene (PTFE) as a fibrous binder. The active material film is bonded to current collectors via a priming conductive adhesive (PCA) to form electrodes. This study presents systematic investigation on the application of conductive adhesive as a conductive primer coating in dry-process electrodes. To evaluate the processing conditions, we investigated the influence of thermal treatment temperature on the flexibility of the PCA and determined that 60 °C is the optimal temperature for drying. Through comprehensive characterization, we definitively identified the conductive adhesive as having a phenolic resin matrix and incorporating conductive fillers of graphite and carbon black. Moving to performance analysis, the electrochemical evaluation of pouch cells with PCA-coated current collectors revealed that within the 0.01–3 V range, partial decomposition of the phenolic resin matrix is accompanied by lithium-ion intercalation into graphite, leading to particle dislodgment. Notably, the dry-process electrodes incorporating PCA demonstrate lower internal resistance and more stable capacity retention. The assembled all-dry-process pouch LIC delivers a specific capacity of 58 mAh g<sup>−1</sup> and maintains 92.5% capacity retention after 5000 cycles at a 10C current rate. Overall, dry-process electrodes incorporating PCA demonstrate superior electrochemical stability. We fabricated high-performance all-dry-process lithium-ion capacitors, underscoring the crucial role of optimized interfacial design in advancing next-generation energy storage devices.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239588"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The air stability of layered oxide cathodes for sodium-ion batteries: A review of mechanisms, modifications, and cost analysis 钠离子电池层状氧化物阴极的空气稳定性：机理、修饰和成本分析综述

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239458

Kaibing Li , Weijia Tang , Peipei He , Yue Li , Changlong Lei , Zhenjiang He , Yi Cheng , Guangsheng Huo , Yunjiao Li

{"title":"The air stability of layered oxide cathodes for sodium-ion batteries: A review of mechanisms, modifications, and cost analysis","authors":"Kaibing Li , Weijia Tang , Peipei He , Yue Li , Changlong Lei , Zhenjiang He , Yi Cheng , Guangsheng Huo , Yunjiao Li","doi":"10.1016/j.jpowsour.2026.239458","DOIUrl":"10.1016/j.jpowsour.2026.239458","url":null,"abstract":"<div><div>The development of sodium-ion batteries (SIBs) as a sustainable alternative to lithium-ion systems is hindered by the poor air stability of layered oxide cathode materials (Na<sub>X</sub>TMO<sub>2</sub>). These materials undergo complex degradation upon exposure to ambient air, leading to structural deterioration, surface residue formation, and electrochemical performance decay. This review delineates the underlying mechanisms, including Na<sup>+</sup>/H<sup>+</sup> exchange, H<sub>2</sub>O intercalation, transition metal oxidation, and their synergistic effects. We further critically evaluate a range of modification strategies—such as elemental doping, surface engineering, synergistic bulk-surface treatments, and post-sintering processes—aimed at enhancing environmental resilience. Special emphasis is placed on the trade-off between air stability and cost, highlighting the economic superiority of bulk doping with low-cost elements over engineering-based solutions. Finally, we outline future research directions to guide the rational design of air-stable, high-performance layered oxide cathodes for next-generation SIBs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239458"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186984","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

High-entropy strategy based on low-cost metal substitution at Zr site for high-performance garnet-type solid-state electrolytes 基于Zr位低成本金属替代的高熵策略制备高性能石榴石型固态电解质

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-11 DOI: 10.1016/j.jpowsour.2026.239577

Tao Kong , Zhimin Hao , Qingquan Wang , Junying Yin , Kang Wu , Bing Wang , Zhijie Gao , Hai-Wen Li

{"title":"High-entropy strategy based on low-cost metal substitution at Zr site for high-performance garnet-type solid-state electrolytes","authors":"Tao Kong , Zhimin Hao , Qingquan Wang , Junying Yin , Kang Wu , Bing Wang , Zhijie Gao , Hai-Wen Li","doi":"10.1016/j.jpowsour.2026.239577","DOIUrl":"10.1016/j.jpowsour.2026.239577","url":null,"abstract":"<div><div>Garnet-type solid-state electrolytes are celebrated for their exceptional stability against lithium metal, a property that is crucial for developing high safety all solid-state batteries. However, the practical adoption of this electrolyte is hindered by low ionic conductivity and poor interface contact. In this paper, we propose a novel strategy for fabricating the garnet-type high-entropy oxide solid-state electrolyte Li<sub>6</sub>La<sub>3</sub>Zr<sub>0.5</sub>Ti<sub>0.5</sub>Cr<sub>0.5</sub>Sn<sub>0.5</sub>O<sub>12</sub> (LLZTCSO) by low-cost partial substitution of Zr with Ti, Cr, Sn in the LLZO. By the lattice distortion effect generated by Zr substitution, LLZTCSO achieves rapid lithium ion migration, high air stability, and excellent mechanical properties. As a result, Li/Ag@LLZTCSO/Li symmetric cell shows lower interfacial impedance (100.5 Ω cm<sup>2</sup>) and higher critical current density (1.428 mA cm<sup>−2</sup>) than LLZO. The LiFePO<sub>4</sub>(LFP)/Ag@LLZTCSO/Li full cell also exhibits good rate capability (145.06 mA h g<sup>−1</sup> at 0.5C) and cycling performance (capacity degradation of 12.13% after 100 cycles at 0.1C). This study outlines a novel approach for the synthesis of high-performance garnet-type electrolytes for all-solid-state lithium metal batteries, providing important references for the design of garnet-type solid-state electrolytes in the future.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239577"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186583","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 dry mixing strategies on calendering behavior, microstructure and performance of lithium-ion battery cathodes 干混策略对锂离子电池阴极压延行为、微观结构和性能的影响

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-13 DOI: 10.1016/j.jpowsour.2026.239515

Alexander Diener , Julian K. Mayer , Tim Grenda , Peter Michalowski , Arno Kwade

{"title":"Effect of dry mixing strategies on calendering behavior, microstructure and performance of lithium-ion battery cathodes","authors":"Alexander Diener , Julian K. Mayer , Tim Grenda , Peter Michalowski , Arno Kwade","doi":"10.1016/j.jpowsour.2026.239515","DOIUrl":"10.1016/j.jpowsour.2026.239515","url":null,"abstract":"<div><div>The carbon black (CB) size distribution plays a crucial role in determining both electrode properties and electrochemical performance. Modifying the CB size distribution, and thus the electrode structure, affects not only intrinsic electrode properties but also the interaction with subsequent processing steps, particularly calendering. Effective process control during calendering is crucial in minimizing scrap, which may arise from the varying deformation behavior of the current collector and the coating. The application of high forces results in distortions between the current collector and the coating, as well as high elastic recovery of the electrode, leading to undesirable effects such as wrinkling. To demonstrate the relationship between electrode structure and calendering behavior, NMC622 cathodes with systematically varied CB size distributions were produced via a dry pre-structuring step in a high-intensity ringlayer mixer and analyzed with respect to their properties and calenderability. By varying the CB size distribution, the compaction line load required during calendering can increase by more than 45% in relation to the optimum case. In addition, structural characterization and electrochemical tests were performed to investigate the relationship between electrode structure, calendering process and electrochemical performance.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239515"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186927","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

Heterojunction engineering for improving the performance of CsPbI3/Sb2S3 based solar cells 提高CsPbI3/Sb2S3基太阳能电池性能的异质结工程

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-13 DOI: 10.1016/j.jpowsour.2026.239529

Shiyao Gu , Saad Ullah , Xiaoxia Wang , Firoz khan , Ping Liu , Shi-e Yang , Yongsheng Chen

{"title":"Heterojunction engineering for improving the performance of CsPbI3/Sb2S3 based solar cells","authors":"Shiyao Gu , Saad Ullah , Xiaoxia Wang , Firoz khan , Ping Liu , Shi-e Yang , Yongsheng Chen","doi":"10.1016/j.jpowsour.2026.239529","DOIUrl":"10.1016/j.jpowsour.2026.239529","url":null,"abstract":"<div><div>Contrary to hybrid perovskites, the inorganic absorber layer of CsPbI<sub>3</sub>-based perovskite solar cells (PSCs) has sparked significant research interest thanks to its superior thermal stability. Nevertheless, the ambient stability of the perovskite phase of CsPbI<sub>3</sub> is impeded by the small ionic radius of cesium (Cs<sup>+</sup>), which in turn limits the potential development of CsPbI<sub>3</sub>-based PSCs. In this work, a heterojunction of CsPbI<sub>3</sub> and Sb<sub>2</sub>S<sub>3</sub> has been successfully fabricated using the electron beam evaporation method followed by thermal annealing. It is demonstrated that the ambient stability of γ-CsPbI<sub>3</sub> is improved with the deposition of a Sb<sub>2</sub>S<sub>3</sub> thin layer. After careful optimization, the optimal annealing time is found to be 5 min at 320 °C. With the introduction of CsPbI<sub>3</sub> interface layer at TiO<sub>2</sub>/CsPbI<sub>3</sub> interface, the interface recombination is suppressed, and open-circuit voltage (V<sub>OC</sub>) of the device is increased to over 0.8 V with a champion power conversion efficiency (PCE) of 6.77% in heterojunction devices with configuration of FTO/TiO<sub>2</sub>/CsPbI<sub>3</sub>-interface layer/CsPbI<sub>3</sub>/Sb<sub>2</sub>S<sub>3</sub>/Carbon. The results of our study suggest that junction engineering will serve as an innovative approach for the advancement of efficient photovoltaic devices.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239529"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187036","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

Numerical modeling and comparative analysis of Cs2BI6 (B = Sn, Pt, Te, Ti) double halide perovskites: Achieving 25.34% PCE in photovoltaic application with impedance analysis Cs2BI6 （B = Sn, Pt, Te, Ti）双卤化物钙钛矿的数值模拟与对比分析：阻抗分析实现光伏应用25.34% PCE

IF 7.9 2区工程技术

Journal of Power Sources Pub Date : 2026-04-15 Epub Date: 2026-02-10 DOI: 10.1016/j.jpowsour.2026.239527

Yashwant Kumar Singh , D.K. Dwivedi , Ashish Garg

{"title":"Numerical modeling and comparative analysis of Cs2BI6 (B = Sn, Pt, Te, Ti) double halide perovskites: Achieving 25.34% PCE in photovoltaic application with impedance analysis","authors":"Yashwant Kumar Singh , D.K. Dwivedi , Ashish Garg","doi":"10.1016/j.jpowsour.2026.239527","DOIUrl":"10.1016/j.jpowsour.2026.239527","url":null,"abstract":"<div><div>Double halide perovskites (DHPs) have been gaining attention due to their alluring electrical and optical properties, high absorption (∼10<sup>5</sup>/cm), defect tolerance, tunable bandgap and large diffusion length. In this work, four DHPs - Cs<sub>2</sub>SnI<sub>6</sub>, Cs<sub>2</sub>PtI<sub>6</sub>, Cs<sub>2</sub>TeI<sub>6</sub> and Cs<sub>2</sub>TiI<sub>6</sub> are systematically investigated for photovoltaic applications The study involves preparation and optimization of four device configuration where each of these materials act as active layer with Cu<sub>2</sub>O and SnS<sub>2</sub> acting as hole and electron transport mediums and indium doped tin-oxide (ITO) as transparent conducting oxide. The study starts by discussing outputs of each cell and then carefully optimizing each cell via thickness, defect density, shallow acceptor density, internal resistances and temperature change. Among the four devices, the Cs<sub>2</sub>TeI<sub>6</sub> based cell demonstrated the best performance, achieving a champion power conversion efficiency of 25.34%, while the Cs<sub>2</sub>SnI<sub>6</sub> device showed the lowest efficiency. Furthermore, impedance analysis for this device has been performed at various temperatures to delve into carrier dynamics. The study provides a comprehensive and comparative analysis for each cell providing significant insights and pathways for lead-free DHP-based solar cell for affordable and clean energy.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"671 ","pages":"Article 239527"},"PeriodicalIF":7.9,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187039","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