IF 2.6 4区化学

Ionics Pub Date : 2025-07-08 DOI: 10.1007/s11581-025-06506-8

Huimin Liang, Jianzhong Li

{"title":"Polyaniline/MnO2-PLA composites: a high-performance and eco-friendly electrode for supercapacitors","authors":"Huimin Liang, Jianzhong Li","doi":"10.1007/s11581-025-06506-8","DOIUrl":"10.1007/s11581-025-06506-8","url":null,"abstract":"<div>Polyaniline (PANI) has wide application prospects in energy storage for environmental protection. In this paper, a binary composite material consisting of manganese dioxide (MnO₂) and PANI was synthesized and then combined with the degradable polymer polylactic acid (PLA) to prepare an environmentally degradable electrode. The optimal amount of MnO2 was determined, and the electrochemical performance of the composite material was systematically studied in three different electrolytes including H2SO4, ZnSO4, and Na2SO4. The PANI/MnO2 composite material (PANI/MnO2-1) exhibits good charging-discharging behavior with a specific capacitance of 605 F/g in 0.5 M H2SO4, 43% increases compared to pure PANI. It indicates that the introduction of MnO2 enhance the charge storage capacity of the electrode. Additionally, the PANI/MnO2-1 electrode retains 71% of capacitance after 1000 cycles in ZnSO4 electrolyte, demonstrating good zinc-ion storage performance. Furthermore, the PANI/MnO2–2-1-PLA electrode, fabricated using PLA as a binder, exhibited a specific capacitance of 416 F/g in 0.5 M H2SO4. Notably, it retained 93% of its maximum capacitance after being soaked in the acidic electrolyte for 60 days, demonstrating good short-term electrochemical stability. These results suggest that incorporating biodegradable PLA as a binder does not significantly compromise performance and offers a promising strategy for developing environmentally friendly supercapacitor electrodes.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9581 - 9592"},"PeriodicalIF":2.6,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236757","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

Constructing crystalline-amorphous heterophase interfaces through Cr/Mo co-doping in RuO2 enables efficient acidic oxygen evolution reaction 在RuO2中通过Cr/Mo共掺杂构建晶态-非晶态异相界面，实现了高效的酸性析氧反应

IF 2.6 4区化学

Ionics Pub Date : 2025-07-07 DOI: 10.1007/s11581-025-06485-w

Jian Yang, Yaowen Zhang, Yongping Liu

{"title":"Constructing crystalline-amorphous heterophase interfaces through Cr/Mo co-doping in RuO2 enables efficient acidic oxygen evolution reaction","authors":"Jian Yang, Yaowen Zhang, Yongping Liu","doi":"10.1007/s11581-025-06485-w","DOIUrl":"10.1007/s11581-025-06485-w","url":null,"abstract":"<div>The oxygen evolution reaction (OER), serving as the anode in water electrolysis, plays a pivotal role in various applications. Developing efficient non-iridium-based catalysts for acidic water splitting remains a significant challenge. This study employs a phase engineering strategy to synthesize defect-rich crystalline/amorphous Ru0.6Mo0.2Cr0.2Ox solid solution catalysts through dual-metal doping. The catalyst exhibits superior acidic OER performance with an overpotential of 204 mV (@10 mA cm−2) and mass activity of 577.8 A gRu−1 at 1.5 V vs RHE, outperforming all control samples. Furthermore, synergistic Cr/Mo doping effectively reduces the oxidation state of Ru in RuO2 while enhancing structural stability, resulting in minimal activity decay during prolonged testing. Theoretical calculations reveal that dual-doping synergistically modulates charge distribution on Ru sites, lowering the energy barrier for *OOH formation in the thermodynamic limiting step. This work provides a facile strategy for developing high-performance acidic OER catalysts with dramatically reduced noble metal loading, demonstrating critical industrial relevance.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9359 - 9369"},"PeriodicalIF":2.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236956","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

Designing high-performance Pt-based catalysts for energy-efficient hydrogen production via ethanol electrolysis in acidic PEM environments 设计高性能pt基催化剂，用于在酸性PEM环境下通过乙醇电解高效制氢

IF 2.6 4区化学

Ionics Pub Date : 2025-07-07 DOI: 10.1007/s11581-025-06515-7

Rakan M. Altarawneh

{"title":"Designing high-performance Pt-based catalysts for energy-efficient hydrogen production via ethanol electrolysis in acidic PEM environments","authors":"Rakan M. Altarawneh","doi":"10.1007/s11581-025-06515-7","DOIUrl":"10.1007/s11581-025-06515-7","url":null,"abstract":"<div>Ethanol electrolysis reactions (EER) offer a sustainable alternative to conventional water electrolysis for hydrogen production. This study systematically evaluates Pt-based catalysts incorporating transition metals (Cu, Ni, Au, Co, Ir, In, Sm, Ag, Pd, Ru, Rh) into binary, ternary, quaternary, and quinary systems for EER. Catalysts were prepared via a NaBH4 reduction method at ambient temperature and characterized using XRD, TEM, and SEM. Among binary catalysts, PtCu/C exhibited superior activity at low potentials, while PtCo/C achieved higher current density at high potentials. The ternary PtCuAu/C catalyst outperformed all catalysts in aqueous electrolyte, demonstrating the lowest onset (0.23 V) and peak (0.71 V) potentials, alongside the highest current density (0.91 mA/cm2). Additionally, chronoamperometry revealed that PtCuAu/C retained 92% of its initial activity after 3500 s at 0.5 V, confirming long-term stability. Notably, PtCuAu/C maintained 81% CO2 selectivity and sustained stability in a proton exchange membrane electrolysis cell (PEMEC) at 80 °C, revealing its activity for practical hydrogen production. The enhanced CO tolerance of PtCuAu/C is attributed to synergistic interactions between Cu (promoting C–C bond cleavage) and Au (weakening CO adsorption). Durability was further confirmed via chronoamperometry and electrochemical impedance spectroscopy in aqueous electrolyte, showing minimal resistance degradation. These findings highlight PtCuAu/C as a promising candidate for scalable and energy-efficient green hydrogen production, guiding future multi-metallic catalyst design.\u0000</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9509 - 9523"},"PeriodicalIF":2.6,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236955","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

Synthesis of pH-controlled nanoparticles of CuO@CuFe2O4 as anode material for advanced lithium ion batteries 先进锂离子电池负极材料CuO@CuFe2O4 ph控制纳米颗粒的合成

IF 2.6 4区化学

Ionics Pub Date : 2025-07-04 DOI: 10.1007/s11581-025-06511-x

Hieu Trung Bui, Ngoc Trung Tran, Thi My Dung Ngo, Anh Huy Phan, Hai Dang Ngo, Dang Manh Le, Thuy-An Nguyen, Ngoc Quang Tran, Dang L. T. Nguyen, Tuan Loi Nguyen

{"title":"Synthesis of pH-controlled nanoparticles of CuO@CuFe2O4 as anode material for advanced lithium ion batteries","authors":"Hieu Trung Bui, Ngoc Trung Tran, Thi My Dung Ngo, Anh Huy Phan, Hai Dang Ngo, Dang Manh Le, Thuy-An Nguyen, Ngoc Quang Tran, Dang L. T. Nguyen, Tuan Loi Nguyen","doi":"10.1007/s11581-025-06511-x","DOIUrl":"10.1007/s11581-025-06511-x","url":null,"abstract":"<div>This work described a facile synthesis of combining two-component nanoparticle of CuO and CuFe2O4 (CFO) at three different pH values of 9, 10, and 11, followed by heat treatment at 750 °C for 3 h (denoted as CFO_9, CFO_10, CFO_11, respectively). X-ray diffraction and scanning electron microscope were used to analyze the morphological characteristics of the as-prepared samples. The results exhibited that CFO particle size decreased contrary to pH from 9 to 11. These three anode materials reached high initial capacities of over 1100 mAh g−1, and the capacities excellently remained over 500 mAh g−1 through 100 cycles at the current rate of 100 mA g−1. Moreover, the CFO_10 electrode showed a notably capacity retention with a capacity of 621 mAh g−1 after 100 times of lithiation/delithiation, demonstrating that the CFO_10 composite is a promising material for anode electrodes in lithium-ion batteries.\u0000</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"8919 - 8929"},"PeriodicalIF":2.6,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical investigations on PVDF-HFP-based sodium ion conducting gel polymer electrolyte added with copper particles 添加铜颗粒的pvdf - hfp基钠离子导电凝胶聚合物电解质的电化学研究

IF 2.6 4区化学

Ionics Pub Date : 2025-07-03 DOI: 10.1007/s11581-025-06508-6

Rajendra Singh Nagar, Manoj Kanani, Sujeet Chaursia, Kuldeep Mishra, Deepak Kumar

{"title":"Electrochemical investigations on PVDF-HFP-based sodium ion conducting gel polymer electrolyte added with copper particles","authors":"Rajendra Singh Nagar, Manoj Kanani, Sujeet Chaursia, Kuldeep Mishra, Deepak Kumar","doi":"10.1007/s11581-025-06508-6","DOIUrl":"10.1007/s11581-025-06508-6","url":null,"abstract":"<div>Dispersion of inorganic fillers helps in increasing the disorderness in the polymer electrolytes and inculcating ion dissociation. In the present work, the impact of copper (Cu) micro-particles on the structural, thermal, and electrochemical behavior of a sodium-ion conducting gel polymer electrolytes comprising Poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer and a liquid electrolyte of NaBF4 salt in a mixture of ethylene carbonate and propylene carbonate is presented. The free-standing and flexible films of the gel polymer electrolyte with uniform dispersion of the Cu micro-particles were prepared by solution casting techniques. The optimized electrolyte composition displays jump in the conductivity with an excellent ionic conductivity of 5.19 mS cm−1 at room temperature. The optimized electrolyte composition shows improved electrochemical stability of ~ 4.2 V. The Cu particles strike on two major fronts in the electrolyte system as; it helps ion dissociation as evident from dielectric studies and increase amorphicity of polymer backbone as evident from X-ray diffraction (XRD) and differential scanning calorimetry (DSC) studies.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9029 - 9039"},"PeriodicalIF":2.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236882","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

Performance comparison and analysis of V2O5 materials synthesized under different precursors and the application in aqueous zinc-ion batteries 不同前驱体合成的V2O5材料性能对比分析及其在水锌离子电池中的应用

IF 2.6 4区化学

Ionics Pub Date : 2025-07-01 DOI: 10.1007/s11581-025-06505-9

Jianqun Song, Jiyao Zhou, Yang Zhang, Chao Liu, Zhipeng Wang, Ling Li

{"title":"Performance comparison and analysis of V2O5 materials synthesized under different precursors and the application in aqueous zinc-ion batteries","authors":"Jianqun Song, Jiyao Zhou, Yang Zhang, Chao Liu, Zhipeng Wang, Ling Li","doi":"10.1007/s11581-025-06505-9","DOIUrl":"10.1007/s11581-025-06505-9","url":null,"abstract":"<div>V2O5 has attracted considerable attention from researchers due to its unique layered structure, which is suitable for applications in the energy storage field. In this paper, V2O5 materials were synthesized via a hydrothermal method, and the electrochemical performance differences of materials synthesized from different precursors were compared. Electrochemical performance tests and analysis of the V2O5 materials revealed that those synthesized from oxalic acid required a longer hydrothermal reaction time to achieve better discharge capacity, with a maximum capacity of 457.9 mAh/g at the current density of 50 mA/g. In contrast, V2O5 materials synthesized from thioacetamide needed a higher hydrothermal temperature to achieve better capacity. The XRD tests show that the V2O5 materials synthesized from different precursors exhibit varying peak intensities on different crystal planes in their XRD patterns. The SEM tests reveal that the V2O5 materials synthesized from thioacetamide, compared to those from oxalic acid, have smaller particle sizes, predominantly around 300 nm. The Infrared spectroscopy and Raman tests indicate that the main peak positions in the spectra remain consistent. The XPS tests show that the V2p and O1s peaks are essentially the same, with the valence state of V being + 5. This indicates that despite the different precursors, the oxidation state of vanadium in the ultimately synthesized V₂O₅ material remains stable.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9163 - 9181"},"PeriodicalIF":2.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236781","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

Study on 3D flower-like Co2NiO4 as an anode for lithium-ion batteries 三维花状Co2NiO4作为锂离子电池负极材料的研究

IF 2.6 4区化学

Ionics Pub Date : 2025-07-01 DOI: 10.1007/s11581-025-06507-7

Rui Wu, Minqiang Xu, Qian Zhang, Liwei Mao, Jinjing Zhou, Roubing Gui, Guoxu Zheng

引用次数: 0

Effect of synthesis methods on the electrochemical performance of perovskite‑type La0.6Sr0.4Co0.2Fe0.8O3 as supercapacitor electrode material 合成方法对钙钛矿型La0.6Sr0.4Co0.2Fe0.8O3超级电容器电极材料电化学性能的影响

IF 2.6 4区化学

Ionics Pub Date : 2025-06-30 DOI: 10.1007/s11581-025-06503-x

YaXin Zhang, DongQing Luo, YaoHui Zhang, JingBo Lv

{"title":"Effect of synthesis methods on the electrochemical performance of perovskite‑type La0.6Sr0.4Co0.2Fe0.8O3 as supercapacitor electrode material","authors":"YaXin Zhang, DongQing Luo, YaoHui Zhang, JingBo Lv","doi":"10.1007/s11581-025-06503-x","DOIUrl":"10.1007/s11581-025-06503-x","url":null,"abstract":"<div>Perovskite‑type La0.6Sr0.4Co0.2Fe0.8O3 (LSCF6428) was synthesized using sol–gel (Sol-LSCF6428) and glycine combustion (Gly-LSCF6428) methods. A comparative analysis was conducted on the microstructure, elemental valence states, specific surface area, and electrochemical properties of LSCF6428 produced by each synthesis route. Structural analysis confirmed that Gly-LSCF6428 exhibited superior crystallinity, optimized microstructure, abundant oxygen vacancies and mesoporous distribution and higher specific surface area. Electrochemical testing in a three-electrode setup with 1 M Na2SO4 electrolyte revealed that Gly-LSCF6428 outperformed Sol-LSCF6428. Gly-LSCF6428 achieves a specific capacitance of approximately 168 F g⁻1 compared to 139 F g⁻1 of Sol-LSCF6428 at 2 mV s⁻1 scan rate. Gly-LSCF6428 also exhibits remarkable cycle stability of 99.4% retention after 5000 cycles(at 3 A g−1). In a 6 M KOH electrolyte, the Gly-LSCF6428 electrode exhibits a high specific capacitance of 266 F g−1 at a current density of 1 A g⁻1, along with a low internal resistance (Rs = 0.48 Ω). In addition, the Gly-LSCF6428//Gly-LSCF6428 symmetric supercapacitor provides an energy density of 3.74 Wh kg−1 at a power density of 500 W kg−1. These findings suggest that the properties of LSCF6428 can be effectively tuned through synthesis methods, making it a promising candidate for energy storage applications.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9567 - 9580"},"PeriodicalIF":2.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236778","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

Morphological alteration by Ni doping on BiFeO3 electrodes for supercapacitor applications 镍掺杂在BiFeO3超级电容器电极上的形态学改变

IF 2.6 4区化学

Ionics Pub Date : 2025-06-28 DOI: 10.1007/s11581-025-06500-0

V. B. Ranmale, G. A. Bhinge, P. A. Magdum, L. D. Kadam, T. J. Shinde

引用次数: 0

Defect-engineered ultrathin g-C3N4 nanosheets anchored with nickel clusters via dual-functional modification for synergistically enhanced photocatalytic hydrogen evolution 缺陷工程超薄g-C3N4纳米片通过双功能修饰与镍团簇锚定协同增强光催化析氢

IF 2.6 4区化学

Ionics Pub Date : 2025-06-26 DOI: 10.1007/s11581-025-06499-4

Yinghan Cao, Dongmei Yang, Yuhao Wang, Fengda Xiang, Jingtong Han, Pengcheng Wu, Keliang Wu

{"title":"Defect-engineered ultrathin g-C3N4 nanosheets anchored with nickel clusters via dual-functional modification for synergistically enhanced photocatalytic hydrogen evolution","authors":"Yinghan Cao, Dongmei Yang, Yuhao Wang, Fengda Xiang, Jingtong Han, Pengcheng Wu, Keliang Wu","doi":"10.1007/s11581-025-06499-4","DOIUrl":"10.1007/s11581-025-06499-4","url":null,"abstract":"<div>The rational design of co-catalysts with broad spectral response and efficient charge separation remains a critical challenge in photocatalysis. In this study, we propose a dual-functional modification strategy integrating defect engineering and transition metal cluster anchoring to construct a high-performance ACNNS/Ni composite. Ultrathin g-C3N4 nanosheets (CNNS) were first etched with NH4F to create surface defects, serving as anchoring sites for uniformly dispersing Ni clusters. These defects not only enhanced intrinsic photocatalytic activity but also enabled stable Ni cluster loading, forming a Schottky barrier at the Ni/g-C3N4 interface to facilitate electron transfer and suppress recombination. The optimized ACNNS/Ni exhibited a narrowed bandgap (2.37 eV vs. 2.65 eV for pristine CNNS), extended visible-light absorption to 477 nm, and achieved a remarkable hydrogen evolution rate of 2.85 mmol/(g h) under simulated sunlight—5.82 times higher than pure CNNS. Notably, the defect-rich structure and Ni clusters synergistically improved charge separation efficiency, as evidenced by a 12-fold increase in photocurrent density and reduced charge transfer resistance. Furthermore, cyclic tests confirmed robust stability, retaining 82% activity after five cycles. This work highlights the significance of “defect engineering-metal cluster anchoring” in tailoring heterojunction systems, offering a universal pathway for developing transition metal-modified 2D photocatalysts with broad spectral utilization and high quantum efficiency.</div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"31 9","pages":"9541 - 9549"},"PeriodicalIF":2.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145236998","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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