IF 2.6 4区化学

Ionics Pub Date : 2026-03-10 DOI: 10.1007/s11581-026-06999-x

Jinjing Du, Ruitong Zhai, Haiyang Lin, Xun Liu, Bin Wang, Jun Zhu, Heng Zuo, Qian Li, Xihong He

{"title":"The effect of etching porous graphite felt electrode on the performance of VRFB by K2FeO4-mediated sacrificial template method","authors":"Jinjing Du, Ruitong Zhai, Haiyang Lin, Xun Liu, Bin Wang, Jun Zhu, Heng Zuo, Qian Li, Xihong He","doi":"10.1007/s11581-026-06999-x","DOIUrl":"10.1007/s11581-026-06999-x","url":null,"abstract":"<div>\u0000 \u0000 Vanadium redox flow batteries (VRFBs) are regarded as an ideal candidate technologies for large-scale energy storage systems because of their advantages of strong scalability and long cycle life. However, its practical application is limited by the key problem of slow redox reaction kinetics on the electrode surface. In this study, a simple, low-cost and non-polluting method was used to etch the graphite felt to regulate the surface characteristics of the graphite felt electrode. Through the synergistic reaction of oxide and graphite felt at high temperature, a porous carbon layer structure with high roughness was constructed on the electrode surface, and oxygen-containing functional groups. The results of SEM, XPS and Raman tests revealed that as the number of oxygen-containing functional groups on the modified electrode increased, the specific surface area increased by approximately 329%, and the surface electrochemical activity was significantly increased. Electrochemical tests revealed that the catalytic activity of the modified electrode for the VO²⁺/VO₂⁺ redox reaction is enhanced, and the charge transfer resistance is reduced. At a current density of 200 mA/cm2, the VRFB energy efficiency of the assembled modified electrode reaches 68.3%, which is 8.8% higher than that of the original electrode, and the capacity retention rate can reach 63.3% after 150 cycles.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4005 - 4020"},"PeriodicalIF":2.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733177","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

Lithium-ion battery remaining useful life prediction based on efficient compressed sensing and interactive enhanced Mamba model 基于高效压缩感知和交互式增强Mamba模型的锂离子电池剩余使用寿命预测

IF 2.6 4区化学

Ionics Pub Date : 2026-03-10 DOI: 10.1007/s11581-026-06958-6

Hai-Kun Wang, Xin Liu, Kaitao Chen, Zhi-Chao Xu, Yu-Kai Guo, Qian Huang, Huamei Cao

{"title":"Lithium-ion battery remaining useful life prediction based on efficient compressed sensing and interactive enhanced Mamba model","authors":"Hai-Kun Wang, Xin Liu, Kaitao Chen, Zhi-Chao Xu, Yu-Kai Guo, Qian Huang, Huamei Cao","doi":"10.1007/s11581-026-06958-6","DOIUrl":"10.1007/s11581-026-06958-6","url":null,"abstract":"<div>\u0000 \u0000 Accurate remaining useful life (RUL) forecasting for lithium-ion batteries plays a crucial role in systems that rely on battery performance and is essential for ensuring operational safety and improving maintenance efficiency. However, due to the complex nonlinear degradation characteristics of batteries and the difficulty in modeling long-term dependencies, RUL prediction remains a challenging task. This study proposes a hybrid prediction framework based on Interactive Enhanced Mamba (IDMamba) and Efficient Compressed Sensing (ECS). ECS compresses the input sequence through a learnable Weibull measurement matrix, reducing redundancy while preserving key features. The dynamic FISTA algorithm with attention and normalization further enhances the reconstruction of effective information. IDMamba integrates cross-convolutional blocks and state-space modeling, enhanced by Dynamic Exponential Moving Average (DEMA). This adaptive smoothing module dynamically adjusts weights based on changes over time, achieving noise reduction while preserving local instantaneous dynamic changes. Extensive experiments on the CACLE and NASA datasets demonstrate the superiority of the proposed model in terms of RUL. Experimental results show that this method achieves higher prediction accuracy on multiple sets of battery data, while maintaining good robustness and generalization performance in cross-sample tests. Its overall performance is superior to existing comparative models.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4245 - 4262"},"PeriodicalIF":2.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733199","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

Fabrication of high-specific-surface-area lithium aluminum layered double hydroxides using activated alumina for enhanced lithium-ion adsorption 利用活性氧化铝制备高比表面积锂铝层状双氢氧化物以增强锂离子吸附

IF 2.6 4区化学

Ionics Pub Date : 2026-03-10 DOI: 10.1007/s11581-026-07058-1

Shanxin Xiong, Minghong Jiang, Shengyu Wang, Yongxin Wang, Chunxia Hua, Ming Gong

{"title":"Fabrication of high-specific-surface-area lithium aluminum layered double hydroxides using activated alumina for enhanced lithium-ion adsorption","authors":"Shanxin Xiong, Minghong Jiang, Shengyu Wang, Yongxin Wang, Chunxia Hua, Ming Gong","doi":"10.1007/s11581-026-07058-1","DOIUrl":"10.1007/s11581-026-07058-1","url":null,"abstract":"<div>\u0000 \u0000 Lithium-aluminum layered double hydroxide (Li/Al-LDH) has been widely used in lithium extraction from salt-lake brines due to its high selectivity, easy recyclability, and environmental friendliness. This study involved the calcination of boehmite to form activated alumina, which was then used as an aluminum source to prepare high-specific-surface-area Li/Al-LDH via a hydrothermal method. The structure and adsorption performance of the adsorbents were systematically examined. The results indicate that the Li/Al-LDH synthesized from activated alumina exhibits a high specific surface area, abundant hydroxyl groups, and a porous morphology. This structure effectively increases the volume of mesopores and macropores, provides more active sites, facilitates the diffusion of Li⁺ within the adsorbent, and ultimately enhances the lithium-ion adsorption capacity. The effects of adsorption time, initial Li⁺ concentration, and solution pH on the Li⁺ adsorption performance were systematically investigated. Kinetic and isotherm modeling revealed that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm, suggesting a chemisorption-dominated monolayer adsorption mechanism. The adsorbent prepared by this approach exhibited high selectivity for Li⁺ in a mixed solution containing Li⁺, Ca²⁺, Na⁺, Mg²⁺, and K⁺, and maintained a high Li⁺ adsorption capacity even after five consecutive adsorption cycles. This work provides a promising strategy for enhancing the Li⁺ adsorption capacity of aluminum-based lithium adsorbents.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4379 - 4391"},"PeriodicalIF":2.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733117","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

Heteroatom-doped and solvent induced crystal facet engineering on NiCuZn-MOF to promote methanol oxidation NiCuZn-MOF的杂原子掺杂和溶剂诱导晶面工程促进甲醇氧化

IF 2.6 4区化学

Ionics Pub Date : 2026-03-10 DOI: 10.1007/s11581-026-06991-5

Xiaoying Yang, Guanrong Lin, Manzhen Zhao, Zhi Lin, Qi Chen, Baohua Zhang, Shengrun Zheng, Songliang Cai, Jun Fan, Bolin Zhao, Weiguang Zhang, Yuwei Zhang

{"title":"Heteroatom-doped and solvent induced crystal facet engineering on NiCuZn-MOF to promote methanol oxidation","authors":"Xiaoying Yang, Guanrong Lin, Manzhen Zhao, Zhi Lin, Qi Chen, Baohua Zhang, Shengrun Zheng, Songliang Cai, Jun Fan, Bolin Zhao, Weiguang Zhang, Yuwei Zhang","doi":"10.1007/s11581-026-06991-5","DOIUrl":"10.1007/s11581-026-06991-5","url":null,"abstract":"<div>\u0000 \u0000 Heteroatom-doped and crystal facet engineering are important strategies for catalyst design and performance optimization. In this study, we combined these two strategies together and developed an alcohol solvent mediated strategy to synthesize a trimetallic metal-organic frameworks catalyst (NiCuZn-MOF) with cubic morphology via a facile solvothermal method. By adjusting the alcohol solvents (ethanol/propanol/butanol), the Cu/Zn atoms can smoothly enter the metal-organic framework (MOF) structure and replace some of the Ni atoms in MOF-5 structure. Moreover, the alcohol solvents can also help expose some crystal surface structures that are beneficial for catalytic activity. Among them, the NiCuZn-MOF-PA catalyst prepared with propanol as the solvent exhibited the most excellent catalytic performance in methanol oxidation reaction (MOR) with the geometric activity (489.46 mA cm− 2), mass activity (6454.93 mA mg− 1) at 1.923 V and 12 h continuous stability. X-ray photoelectron spectroscopy (XPS) and in-situ Raman spectroscopy analyses revealed the synergistic effect between the ternary metals and formation of active intermediate species, which can help understand the mechanism of catalytic reactions. This study not only provides new ideas for developing efficient non-precious metal methanol oxidation catalysts but also establishes effective methodological guidance for the structural design and performance regulation of MOF-based electrocatalysts, which is of great significance for promoting the practical application of direct methanol fuel cells (DMFCs).\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4455 - 4467"},"PeriodicalIF":2.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733119","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

Green synthesis of CuBi2O4 using Illicium verum seeds: application to photocatalyst for dye degradation, detoxification of Cr (VI), eco-toxicological plant assessment, electrochemical detection of dopamine 八角种子绿色合成CuBi2O4：染料降解光催化剂、Cr （VI）解毒、植物生态毒理学评价、多巴胺电化学检测

IF 2.6 4区化学

Ionics Pub Date : 2026-03-10 DOI: 10.1007/s11581-026-07005-0

Nalina R., Naveen M. V., Latha K.P., Harini R., Nagaraju G.

{"title":"Green synthesis of CuBi2O4 using Illicium verum seeds: application to photocatalyst for dye degradation, detoxification of Cr (VI), eco-toxicological plant assessment, electrochemical detection of dopamine","authors":"Nalina R., Naveen M. V., Latha K.P., Harini R., Nagaraju G.","doi":"10.1007/s11581-026-07005-0","DOIUrl":"10.1007/s11581-026-07005-0","url":null,"abstract":"<div>\u0000 \u0000 In this study, CuBi₂O₄ photocatalyst was synthesized using Illicium verum (Star anise) seed powder as a natural biofuel in a green combustion synthesis route. Illicium verum is rich in organic compounds such as flavonoids, lignins, and essential oils, which act as both fuel and reducing agents during combustion. Its use not only eliminates the need for hazardous chemical fuels like glycine or urea but also provides a renewable, non-toxic, and cost-effective alternative, thereby reducing the overall environmental impact of catalyst fabrication. The obtained CuBi₂O₄ was characterized by XRD, SEM, HRTEM, EDS, XPS, BET, FTIR, and UV–Vis analyses. XRD confirmed the tetragonal phase with an average crystallite size of 19.7 nm, while HRTEM revealed cylindrical rod-like morphology. The catalyst exhibited an indirect band gap of 1.79 to 1.86 eV, suitable for visible-light-driven photocatalysis. Under optimized conditions, the photocatalyst achieved 94% degradation of Rose Bengal dye within 210 min, with comparatively lower efficiencies for Methylene Blue, Rhodamine B, and Methyl Orange. Hydroxyl radical quantification using coumarin confirmed •OH as the primary reactive species. Additionally, 66% reduction of Cr(VI) ions was achieved, demonstrating dual treatment potential for dyes and heavy metals. Phytotoxicity assessment using Eleusine coracana seeds indicated a moderate reduction in toxicity after treatment. Furthermore, the CuBi₂O₄-modified electrode exhibited notable electrochemical dopamine sensing with a detection limit of 0.4 µM, highlighting its multifunctional application potential.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4571 - 4597"},"PeriodicalIF":2.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733030","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

Preparation and electrochemical performance study of ZnMn2O4@Corn stalk carbon composites ZnMn2O4@Corn秸秆炭复合材料的制备及电化学性能研究

IF 2.6 4区化学

Ionics Pub Date : 2026-03-09 DOI: 10.1007/s11581-026-07016-x

Kaifeng Yu, Jie Song, Xinyi Wang, Kailang Hao, Yanli Yang, Hongfeng Ma, Lijuan Zhu, Shuang Gao

{"title":"Preparation and electrochemical performance study of ZnMn2O4@Corn stalk carbon composites","authors":"Kaifeng Yu, Jie Song, Xinyi Wang, Kailang Hao, Yanli Yang, Hongfeng Ma, Lijuan Zhu, Shuang Gao","doi":"10.1007/s11581-026-07016-x","DOIUrl":"10.1007/s11581-026-07016-x","url":null,"abstract":"<div>\u0000 \u0000 Zinc-manganese-based transition metal oxides have become an important research direction for anode materials in lithium-ion and sodium-ion batteries due to their high theoretical capacity and low cost. However, issues such as volume fragmentation inevitably arise during the charging and discharging processes of the batteries. This study is the first to systematically introduce corn straw–derived carbon (CSC) into the ZnMn2O4 system. By varying the solvothermal treatment duration, the effect of treatment time on the electrochemical performance of ZnMn2O4@CSC (ZMO@CSC) was analyzed. We also evaluated the electrochemical performance of ZMO@CSC in both lithium-ion and sodium-ion batteries. The results show that ZMO@CSC treated for 28 h via solvothermal synthesis exhibits the best performance. In the lithium-ion battery, ZMO@CSC-28 retains a high specific capacity of 993.7 mA h g-1 after 100 cycles at a 0.2 C(1 C = 784 mA g-1) rate. In the sodium-ion battery, at a high rate of 2 C༈1 C = 558 mA g-1༉, ZMO@CSC-28 maintains a specific capacity of 270.6 mA h g-1 after 3500 ultra-long cycles, demonstrating excellent cycling stability. This provides a feasible pathway for the development of low-cost, high-performance, and highly stable lithium/sodium battery materials.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"3987 - 4003"},"PeriodicalIF":2.6,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733167","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

Advancements and challenges in modification strategies for Na4Fe3(PO4)2(P2O7) Cathode: toward high-performance sodium-ion batteries 面向高性能钠离子电池的Na4Fe3(PO4)2（P2O7）阴极改性策略研究进展与挑战

IF 2.6 4区化学

Ionics Pub Date : 2026-03-09 DOI: 10.1007/s11581-026-06978-2

Pengcheng Liu, Penghao Wang, Juan Wu, Dan Xue, Boyan Ji, Like Zhang, Ruizhi Zhang, Han Chen, Jing Li, Li Xiao

{"title":"Advancements and challenges in modification strategies for Na4Fe3(PO4)2(P2O7) Cathode: toward high-performance sodium-ion batteries","authors":"Pengcheng Liu, Penghao Wang, Juan Wu, Dan Xue, Boyan Ji, Like Zhang, Ruizhi Zhang, Han Chen, Jing Li, Li Xiao","doi":"10.1007/s11581-026-06978-2","DOIUrl":"10.1007/s11581-026-06978-2","url":null,"abstract":"<div>\u0000 \u0000 Na4Fe3(PO4)2(P2O7) (NFPP), as a polyanionic cathode material, has garnered significant attention due to its high theoretical capacity, low volume variation, high operating voltage, and environmental friendliness. Simultaneously, challenges such as the low intrinsic electronic conductivity, impurity phase formation, and sluggish sodium-ion diffusion kinetics inherent to NFPP have driven extensive research into material modification and structural design. While these research efforts have attracted considerable interest over the past decade, a timely and systematic summary and analysis of the progress remain lacking. This review comprehensively addresses the challenges confronting NFPP materials and the corresponding advancements in modification strategies. Firstly, the classical approach of elemental doping, encompassing both anion and cation doping, is introduced. Subsequently, significant progress in carbon coating and structural design strategies is detailed. Finally, based on the practical application requirements for NFPP materials, the persisting challenges are thoroughly analyzed. Feasible future research directions are outlined to provide researchers with relevant insights and references.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"3771 - 3789"},"PeriodicalIF":2.6,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733033","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

Preparation and testing of CeFe2O4@PANI nanocomposite, as pseudo-capacitor electrode for energy storage applications CeFe2O4@PANI纳米复合材料储能伪电容电极的制备与测试

IF 2.6 4区化学

Ionics Pub Date : 2026-03-09 DOI: 10.1007/s11581-026-07033-w

Mah Noor Ali, Albandari W. Alrowaily, Badriah Mesfer Alotaibi, Haifa A. Alyousef, Abhinav Kumar, Hala M. Abo-Dief, Rizwan Ul Hassan

{"title":"Preparation and testing of CeFe2O4@PANI nanocomposite, as pseudo-capacitor electrode for energy storage applications","authors":"Mah Noor Ali, Albandari W. Alrowaily, Badriah Mesfer Alotaibi, Haifa A. Alyousef, Abhinav Kumar, Hala M. Abo-Dief, Rizwan Ul Hassan","doi":"10.1007/s11581-026-07033-w","DOIUrl":"10.1007/s11581-026-07033-w","url":null,"abstract":"<div>\u0000 \u0000 The global demand for meetings requires energy, and the influence on energy storage technology is critical to provide a consistent energy supply. Supercapacitors have recently fascinated researchers’ interest as potential alternative for electrochemical energy storage strategies. This study focuses on production of CeFe2O4@PANI nanocomposite for supercapacitor devices using hydrothermal approach. Many physical and electrochemical analytical tests were utilised to characterise manufactured nanocomposite. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were then utilized to analyse structure, functional group confirmation and morphology of material. Moreover, composite was tested in KOH, which confirmed its outstanding electrochemical characteristics. GCD confirmed good specific capacitance 948 F g− 1 at 1.0 A g− 1 with energy density (Ed) of 16.13 Wh kg–1. This study not only shows potential of CeFe2O4@PANI as a supercapacitor electrode, but also focusses on building low-cost nanocomposites with excellent performance that might be used for variety of applications in future.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4337 - 4348"},"PeriodicalIF":2.6,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733170","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

Synergistic enhancement of lithium polysulfide conversion in high-performance lithium-sulfur batteries via Bi2S3 incorporation and selenium doping Bi2S3掺入和硒掺杂对高性能锂硫电池中多硫化锂转化的协同增强作用

IF 2.6 4区化学

Ionics Pub Date : 2026-03-09 DOI: 10.1007/s11581-026-07044-7

Wenxiao Su, Wangjun J. Feng, Yueping Niu, Qi Zhou, Zhifeng Zhao, Li Zhang

{"title":"Synergistic enhancement of lithium polysulfide conversion in high-performance lithium-sulfur batteries via Bi2S3 incorporation and selenium doping","authors":"Wenxiao Su, Wangjun J. Feng, Yueping Niu, Qi Zhou, Zhifeng Zhao, Li Zhang","doi":"10.1007/s11581-026-07044-7","DOIUrl":"10.1007/s11581-026-07044-7","url":null,"abstract":"<div>\u0000 \u0000 Lithium-sulfur (Li-S) batteries offer substantial potential as next-generation energy storage solutions, driven by their high theoretical energy density and low material cost. However, the practical realization and commercialization of these batteries face major challenges, primarily the detrimental polysulfide shuttle effect and the slow kinetics associated with sulfur redox reactions. To address these challenges, we developed a rational structural design of Bi₂S₃₋ₓSeₓ/CNTs heterostructures as advanced sulfur hosts via a solvothermal synthesis strategy. The three-dimensional carbon nanotube (CNT) framework establishes interconnected conductive pathways for rapid electron/ion transport, while the synergistic integration of Bi₂S₃ and controlled Se doping creates abundant catalytic active sites. This dual modification effectively lowers the energy barrier for LiPS conversion and suppresses the shuttle effect through enhanced chemisorption-catalysis coupling. Electrochemical evaluations demonstrate that the optimized CNTs-Bi2S3₋xSex-1/S cathode delivers a high-rate capacity of 900 mAh g⁻¹ at 2 C and retains 1139.1 mAh g⁻¹ after 200 cycles at 0.2 C, corresponding to an exceptional capacity retention of 87.7%. This work provides new insights into the rational design of multifunctional sulfur host materials, paving the way for high-energy-density Li-S batteries with enhanced cycling stability and reaction efficiency.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4129 - 4138"},"PeriodicalIF":2.6,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733198","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

Enhanced electrochemical performance of LiFePO₄@rGO cathodes via 3D conductive architecture and pseudocapacitive contributions 通过三维导电结构和赝电容贡献增强LiFePO₄@rGO阴极的电化学性能

IF 2.6 4区化学

Ionics Pub Date : 2026-03-07 DOI: 10.1007/s11581-026-06992-4

Amani Kaabi, Suzan Makawi, Moufida Boukriba

{"title":"Enhanced electrochemical performance of LiFePO₄@rGO cathodes via 3D conductive architecture and pseudocapacitive contributions","authors":"Amani Kaabi, Suzan Makawi, Moufida Boukriba","doi":"10.1007/s11581-026-06992-4","DOIUrl":"10.1007/s11581-026-06992-4","url":null,"abstract":"<div>\u0000 \u0000 In this study, two LiFePO4-based composite cathode materials, LiFePO4@C and LiFePO4@rGO, were synthesized and comparatively evaluated to enhance the electrochemical performance of lithium-ion batteries. LiFePO4@C consists of LiFePO4 particles coated with a uniform conductive carbon layer, whereas LiFePO4@rGO employs reduced graphene oxide (rGO) to construct a three-dimensional conductive framework around the active particles. Structural and morphological analyses confirmed good particle dispersion and intimate interfacial contact in both composites. Notably, the LiFePO4@rGO architecture provided more efficient electron and lithium-ion transport pathways. Electrochemical testing demonstrated the superior performance of LiFePO4@rGO, which delivered a reversible capacity of 181 mAh·g⁻¹ at 0.1 C, exceeding the theoretical capacity of pristine LiFePO4. This enhancement is ascribed to additional pseudocapacitive contributions and reversible Li⁺ storage on rGO surfaces. Moreover, the LiFePO4@rGO electrode exhibited outstanding rate capability up to 10 C and excellent cycling stability, retaining 95.8% of its capacity after 1000 cycles at 5 C. Importantly, LiFePO4@rGO achieved a lithium-ion diffusion coefficient of 8.57 × 10⁻11 cm2·s⁻1, significantly higher than values reported for comparable systems, further confirming the role of rGO in accelerating Li⁺ kinetics. These findings highlight the synergistic effect of rGO integration and position LiFePO4@rGO as a highly promising cathode material for high-rate and long-life lithium-ion batteries.\u0000 </div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"32 4","pages":"4103 - 4115"},"PeriodicalIF":2.6,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733194","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

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