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High-performance asymmetric supercapacitor electrode materials NiCo2S4@NiCo-LDH@Ni foam 高性能不对称超级电容器电极材料 NiCo2S4@NiCo-LDH@Ni 泡沫
IF 2.4 4区 化学
Ionics Pub Date : 2024-08-01 DOI: 10.1007/s11581-024-05739-3
Yan Gu, Bingyan Du, Yifan Bai, Lu Yang, Yunpeng Wang, XuanLin Li, XiaoShan Liu
{"title":"High-performance asymmetric supercapacitor electrode materials NiCo2S4@NiCo-LDH@Ni foam","authors":"Yan Gu,&nbsp;Bingyan Du,&nbsp;Yifan Bai,&nbsp;Lu Yang,&nbsp;Yunpeng Wang,&nbsp;XuanLin Li,&nbsp;XiaoShan Liu","doi":"10.1007/s11581-024-05739-3","DOIUrl":"10.1007/s11581-024-05739-3","url":null,"abstract":"<div><p>Composite electrode materials often have excellent electrochemical properties; however, their preparation often requires multiple steps. Therefore, to further reduce the time and preparation cost, a NiCo<sub>2</sub>S<sub>4</sub>@NiCo-layered double hydroxide (NiCo-LDH) composite electrode material was prepared by a one-step method in this study. In the three-electrode system, the specific capacitance was 7462.5 mF cm<sup>−2</sup> at a current density of 5 mA cm<sup>−2</sup>. Moreover, the specific capacitance was maintained at 78.4% after 6000 cycles. To further verify its practical application, we assembled an asymmetric supercapacitor using activated carbon as the anode material and NiCo<sub>2</sub>S<sub>4</sub>@NiCo-LDH as the positive material. The results show that the capacity of the device can still be maintained at 80% of its original capacity after 5000 cycles. This shows that the NiCo<sub>2</sub>S<sub>4</sub>@NiCo-LDH@NF electrode material has good application prospects.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6405 - 6411"},"PeriodicalIF":2.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872548","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
A free-standing CaO infused PVdF-HFP/PMMA polymer-nanocomposite as solid-state electrolytes for energy storage applications 注入 CaO 的独立 PVdF-HFP/PMMA 聚合物纳米复合材料作为固态电解质用于储能应用
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-31 DOI: 10.1007/s11581-024-05738-4
Vijaya B, Usha Rani M
{"title":"A free-standing CaO infused PVdF-HFP/PMMA polymer-nanocomposite as solid-state electrolytes for energy storage applications","authors":"Vijaya B,&nbsp;Usha Rani M","doi":"10.1007/s11581-024-05738-4","DOIUrl":"10.1007/s11581-024-05738-4","url":null,"abstract":"<div><p>Energy storage devices play a crucial role in all kinds of electronic devices. Rechargeable lithium-ion batteries have run across problems such as energy density, toughness, and safety. In order to conquer these hindrances, in this work, a novel solid-state polymer electrolyte for lithium-ion batteries was synthesized by blending polymethyl methacrylate (PMMA) in poly (vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) with constant weight percent of ethylene carbonate (EC) and lithium bis (trifluoro methane sulfonyl) imide (LiTFSI), and different concentrations of calcium oxide (CaO). The composite polymer electrolytes (CPEs) (PVdF-HFP:PMMA:LiTFSI:EC:CaO) were fabricated using the solution casting technique. Powder XRD reveals enhancement in intensity with increasing CaO content. FTIR shows the interaction between the polymer-salt matrix. Among the analyzed films, PVdF-HFP:PMMA:LiTFSI:EC:CaO (10 wt.%) exhibits high ionic conductivity (10<sup>–4</sup> S/cm) and good electrochemical (4 V) and thermal stability (350℃) which makes it suitable for solid-state electrolyte as a separator in energy storage applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6061 - 6071"},"PeriodicalIF":2.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872544","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 performance of SnO2 after blending with Cu 二氧化锡与铜混合后的电化学性能
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-31 DOI: 10.1007/s11581-024-05742-8
Naveen Chandra Joshi, Prateek Gururani, Niraj Kumar
{"title":"Electrochemical performance of SnO2 after blending with Cu","authors":"Naveen Chandra Joshi,&nbsp;Prateek Gururani,&nbsp;Niraj Kumar","doi":"10.1007/s11581-024-05742-8","DOIUrl":"10.1007/s11581-024-05742-8","url":null,"abstract":"<div><p>In this work, SnO<sub>2</sub> nanoparticles (SnO<sub>2</sub> NPs) were synthesised using a leaf extract from <i>Shorea robusta</i>. The synthetic method was found to be reliable, cost-effective, and efficient. The synthesised SnO<sub>2</sub> NPs have been incorporated with copper (Cu) and used as an electrode material for supercapacitors (SCs). The potential of SnO<sub>2</sub> and its nanocomposite for SCs was investigated using various electrochemical parameters. At a current density of 2 A/g, the maximum specific capacitance of SnO<sub>2</sub>@Cu-A, SnO<sub>2</sub>@Cu-B, and SnO<sub>2</sub>@Cu-C was found to be 220, 226, and 300 F/g. The maximum energy density of 11.1 Wh/kg for SnO<sub>2</sub>@Cu-C has been evaluated at a power density of 1021.3 W/kg. After 5000 GCD cycles, a retention of 96.8% was found for SnO<sub>2</sub>@Cu-C. Under two electrode systems, a retention of 95.4% was found for SnO<sub>2</sub>@Cu-C.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6531 - 6547"},"PeriodicalIF":2.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872549","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
Efficient electrochemical hydrogen peroxide production enabled by defect engineering of epoxy-rich carbon materials 环氧富碳材料缺陷工程实现高效电化学过氧化氢生产
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-31 DOI: 10.1007/s11581-024-05741-9
Yijian Liu, Lang Gan
{"title":"Efficient electrochemical hydrogen peroxide production enabled by defect engineering of epoxy-rich carbon materials","authors":"Yijian Liu,&nbsp;Lang Gan","doi":"10.1007/s11581-024-05741-9","DOIUrl":"10.1007/s11581-024-05741-9","url":null,"abstract":"<div><p>Introducing oxygenated species into carbon-based catalysts is an efficient method to enhance the activity of electrochemical hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) production. Here, we report a low-temperature plasma strategy for preparing carbon materials rich in epoxy groups. This catalyst exhibits effective electrocatalytic activity, achieving H<sub>2</sub>O<sub>2</sub> selectivity over 90% and a Faraday efficiency of 94.9% after 12 h of constant H<sub>2</sub>O<sub>2</sub> production. The exceptional electrochemical activity is attributed to the epoxy group species, which are formed through the reaction between carbon defects and oxygen. This work offers an effective approach for preparing carbon-based catalysts for H<sub>2</sub>O<sub>2</sub> production and provides insights into the impact of oxygenated species on the activity for H<sub>2</sub>O<sub>2</sub> generation.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6377 - 6381"},"PeriodicalIF":2.4,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872545","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
Role of cadmium gallate nanoparticles on the cathode of microbial fuel cells for enhanced bioelectricity production 没食子酸镉纳米颗粒在微生物燃料电池阴极上对提高生物发电量的作用
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-30 DOI: 10.1007/s11581-024-05727-7
Mohit Sahni, Ankit Kumar, Pankaj Gupta, Azmat Ali Khan, Abhilasha Singh Mathuriya, Soumya Pandit, Kuldeep Sharma, Amit Roy, Nishant Ranjan, M. Z. A. Yahya, I. M. Noor
{"title":"Role of cadmium gallate nanoparticles on the cathode of microbial fuel cells for enhanced bioelectricity production","authors":"Mohit Sahni,&nbsp;Ankit Kumar,&nbsp;Pankaj Gupta,&nbsp;Azmat Ali Khan,&nbsp;Abhilasha Singh Mathuriya,&nbsp;Soumya Pandit,&nbsp;Kuldeep Sharma,&nbsp;Amit Roy,&nbsp;Nishant Ranjan,&nbsp;M. Z. A. Yahya,&nbsp;I. M. Noor","doi":"10.1007/s11581-024-05727-7","DOIUrl":"10.1007/s11581-024-05727-7","url":null,"abstract":"<div><p>Bringing microbial fuel cells (MFCs) to market requires the use of non-precious metal catalysts. Therefore, we replaced the platinum (Pt) cathode with more cost-effective cadmium gallate (CdGa2O4) nanoparticles in the present research. The synthesis and characterization of cadmium gallate (CdGa<sub>2</sub>O<sub>4</sub>), and further its application as a cathode catalyst for oxygen reduction reaction (ORR) in a MFC. The physiochemical characterization indicates a high ORR property of CdGa<sub>2</sub>O<sub>4</sub>, attributed to the presence of active sites, high electronic conductivity, and high surface area. These features enhanced the bioelectricity production with simultaneous wastewater treatment which resulted into comparable performances to catalysts such as platinum (Pt). The electrochemical analysis shows that the loading rate of CdGa<sub>2</sub>O<sub>4</sub> has a significant impact on the power output of the MFC. The highest volumetric power density was observed in CdGa<sub>2</sub>O<sub>4</sub> with a loading of 1 mg/cm<sup>3</sup> (8.2 W/m<sup>3</sup>). COD removal efficiency also showed a similar trend with respect to different loading rates. 1 mg/cm<sup>3</sup> of CdGa<sub>2</sub>O<sub>4</sub> showed the highest COD removal and Columbic efficiency of 83.8% and 11.7%, respectively. The low cost-to-performance ratio, high ORR activity, and high electric conductivity of CdGa<sub>2</sub>O<sub>4</sub> prove that CdGa<sub>2</sub>O<sub>4</sub> is a feasible substitute for Pt in large-scale operations of MFC.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6267 - 6278"},"PeriodicalIF":2.4,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872464","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 and characterization of ZnO-NiO nanocomposites for photocatalytic and electrochemical storage applications 用于光催化和电化学存储的 ZnO-NiO 纳米复合材料的合成与表征
IF 2.8 4区 化学
Ionics Pub Date : 2024-07-27 DOI: 10.1007/s11581-024-05728-6
S. Gnanam, R. K. Shynu, J. Gajendiran, J. Ramana Ramya, G. Thennarasu, K. Thanigai Arul, S. Gokul Raj, G. Ramesh Kumar
{"title":"Synthesis and characterization of ZnO-NiO nanocomposites for photocatalytic and electrochemical storage applications","authors":"S. Gnanam, R. K. Shynu, J. Gajendiran, J. Ramana Ramya, G. Thennarasu, K. Thanigai Arul, S. Gokul Raj, G. Ramesh Kumar","doi":"10.1007/s11581-024-05728-6","DOIUrl":"https://doi.org/10.1007/s11581-024-05728-6","url":null,"abstract":"<p>Three different ionic surfactants (CTAB, SDS, and PEG) were capped synthesized ZnO-NiO nanocomposites via co-precipitation method. The primary goal of the present work is tuning the crystallite size, morphology, particle size, energy gap, and luminescence of ZnO-NiO nanocomposites under the influence of surfactant agents through powder XRD, SEM, UV–visible, and fluorescence measurements. The bi-phase crystalline structure has been identified in synthesized ZnO-NiO samples with the assistance of powder XRD analysis. The TEM image of the CTAB-capped ZnO-NiO composite revealed a uniformly dispersed spherical-like structure of the particles. Further, formations of zinc oxide–nickel oxide have also been supported by the EDX study. The optical band gap values are relatively higher (3.17 eV) in CTAB-capped ZnO-NiO composites than SDS-capped (3.12 eV), and PEG-capped (3.10 eV) through identified as UV–visible spectra. From the fluorescence spectra, strong visible emission peaks were detected at 632 nm in all synthesized ZnO-NiO nanocomposites. The second aim of the present work, in terms of the better size and optical properties of CTAB-capped ZnO-NiO composites, has been taken to further investigate photocatalytic and electrochemical properties through photocatalytic experiments and cyclic voltammetry measurements. Orange Gelb (OG), Amidoblack 10B (AB10B), and Direct Blue 71 (DB71) dyes, along with CTAB-capped ZnO-NiO nanocomposites, were employed as photocatalyst in a photocatalytic experiment under visible light illumination to test the photodegradation efficiency. Photodegradation efficiency of AB10B to be 99.145% is relatively higher than 95.92% (OG) and 94.88% (DB71) which is due to the photo absorption wavelengths of the chromophore and aromatic part of the dyes. In addition, the electrochemical oxidation peaks, current response, and corresponding potential of CTAB-capped ZnO-NiO were shifted under the influence of various scan rates using cyclic voltammetry (CV) analysis, which exhibits pseudocapacitance behavior. This work will pave the way for the synthesized sample’s use in waste-water treatment and supercapacitor applications.</p>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"6 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784113","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
Mesoporous ZrO2/C and ZnO/C nanocomposites derived from MOFs for SPEEK-based proton exchange membrane 用于 SPEEK 基质子交换膜的 MOFs 衍生介孔 ZrO2/C 和 ZnO/C 纳米复合材料
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-27 DOI: 10.1007/s11581-024-05730-y
Letícia G. da Trindade, Letícia Zanchet, Josiane C. Souza, Antonio C. Roveda Jr, Robert Paiva, Tatiana Zanette, Katia Bernardo-Gusmão, Emilse M. A. Martini, Elson Longo, Edson A. Ticianelli
{"title":"Mesoporous ZrO2/C and ZnO/C nanocomposites derived from MOFs for SPEEK-based proton exchange membrane","authors":"Letícia G. da Trindade,&nbsp;Letícia Zanchet,&nbsp;Josiane C. Souza,&nbsp;Antonio C. Roveda Jr,&nbsp;Robert Paiva,&nbsp;Tatiana Zanette,&nbsp;Katia Bernardo-Gusmão,&nbsp;Emilse M. A. Martini,&nbsp;Elson Longo,&nbsp;Edson A. Ticianelli","doi":"10.1007/s11581-024-05730-y","DOIUrl":"10.1007/s11581-024-05730-y","url":null,"abstract":"<div><p>The metal–organic framework (MOF) incorporation in sulfonated poly(ether ketone) (SPEEK) membranes improves the performance of proton exchange membrane fuel cells (PEMFC) that use this filler in the electrolyte. Mesoporous ZrO<sub>2</sub>/C and ZnO/C nanocomposites derived from the respective MOFs, Zr-BDC-MOF and Zn-BDC-MOF, were used as fillers in SPEEK to determine the influence of the metal (Zr or Zn) and ligand (terephthalic acid (BDC) or carbon (C)) on the proton conductivity and oxidative stability of proton exchange membranes (PEMs). At a temperature of 100 °C, the results show that adding 7 wt% of Zr-BDC-MOF to SPEEK resulted in 2.5-fold higher proton conductivity than pristine SPEEK. However, water uptake and oxidative stability studies reveal that this membrane loses its chemical stability. The data set shows that the inclusion of 7 wt% ZrO<sub>2</sub>/C to SZrC(7) membrane resulted in the best proton conductivity, ca. 2.2-fold higher than SPEEK at 100 °C, making it attractive for application in PEMFC at high temperatures. Our findings show that the influence of the metal used as a filler (Zr or Zn) is lower than that of the ligand (BDC or C) on the oxidative stability and proton conductivity of PEMFC.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6321 - 6339"},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783974","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 in biogenic synthesis of zinc oxide nanoparticles for superior water decontamination and antibacterial efficacy 生物合成氧化锌纳米粒子的研究进展,实现卓越的水质净化和抗菌功效
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-27 DOI: 10.1007/s11581-024-05695-y
Richa Sharma, Rahul Sharma, Sakshi Dhiman, Abhishek Kandwal, Manjula Sharma, Asha Kumari
{"title":"Advancements in biogenic synthesis of zinc oxide nanoparticles for superior water decontamination and antibacterial efficacy","authors":"Richa Sharma,&nbsp;Rahul Sharma,&nbsp;Sakshi Dhiman,&nbsp;Abhishek Kandwal,&nbsp;Manjula Sharma,&nbsp;Asha Kumari","doi":"10.1007/s11581-024-05695-y","DOIUrl":"10.1007/s11581-024-05695-y","url":null,"abstract":"<div><p>An urgent problem is the bacterial infestations caused by home and industrial wastes that contaminate surface water. This article presents a sustainable and affordable method for synthesizing zinc oxide nanoparticles (ZnO NPs) utilizing <i>Asparagus racemosus</i> root extract. X-ray diffraction, Fourier transform infrared spectroscopy, and UV–visible spectrum analysis were used to characterize the synthesized ZnO nanoparticles. The X-ray diffraction peaks of ZnO NPs matched to a standard JCPDS card (no. 36–1451) and the particles were 21–29 nm in size and had a wurtzite structure with good crystallinity. UV–Vis spectroscopy showed absorption peaks between 359 and 364 nm in ZnO NPs synthesized from <i>Asparagus racemosus</i> root extract. ZnO NPs were confirmed by FTIR, which revealed absorption bands in the 469–525 cm<sup>−1</sup> region, showing stretching of the Zn–O bond. In this study, methylene blue (MB) was degraded using ZnO nanoparticles as photocatalysts under the influence of UV light. Notably, the maximum MB decomposition efficiency of 98% was demonstrated by ZnO for 100 mg/mL with reaction rate constants of 0.0312, 0.02104, and 0.001362 min<sup>−1</sup> for ASP<sub>1</sub>, ASP<sub>2</sub>, and ASP<sub>3</sub>, respectively. Additionally, the well diffusion technique was used to assess the zone of inhibition, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) of ZnO nanoparticles against clinical strains of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. ZnO-NPs were more effective against <i>E. coli</i> and <i>S. aureus</i> which exhibited inhibition zones of 13 ± 0.57 and 15 ± 1.15 mm, respectively. These results emphasize the important potential of ZnO nanoparticles produced from biological sources for effective water purification, emphasizing their photocatalytic and antibacterial capabilities.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6509 - 6530"},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141783975","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
Co-free and Sr-free double-perovskite oxide PrBaFe1.9Nb0.1O5+δ as a potential electrode material for symmetrical solid oxide fuel cells 作为对称固体氧化物燃料电池潜在电极材料的无钴无锶双过氧化物 PrBaFe1.9Nb0.1O5+δ
IF 2.4 4区 化学
Ionics Pub Date : 2024-07-27 DOI: 10.1007/s11581-024-05724-w
Feng Wang, Jinyan Qi, Pengkai Shan, Bin Qian, Lishuai Xie, Yifeng Zheng, Han Chen, Lin Ge
{"title":"Co-free and Sr-free double-perovskite oxide PrBaFe1.9Nb0.1O5+δ as a potential electrode material for symmetrical solid oxide fuel cells","authors":"Feng Wang,&nbsp;Jinyan Qi,&nbsp;Pengkai Shan,&nbsp;Bin Qian,&nbsp;Lishuai Xie,&nbsp;Yifeng Zheng,&nbsp;Han Chen,&nbsp;Lin Ge","doi":"10.1007/s11581-024-05724-w","DOIUrl":"10.1007/s11581-024-05724-w","url":null,"abstract":"<div><p>Double-perovskite oxide PrBaFe<sub>2</sub>O<sub>5+δ</sub> (PBF) is considered as a potential electrode material because of its superior oxygen reduction reaction (ORR) activity in air and excellent stability in wet hydrogen atmospheres. However, the electrochemical activities of Fe-based electrode materials are constrained by the oxygen vacancy concentration and oxy-ion transport properties. Herein, PrBaFe<sub>2-x</sub>Nb<sub>x</sub>O<sub>5+δ</sub> (PBFNx, <i>x</i> = 0, 0.05, 0.1, 0.15) oxides are synthesized and evaluated as electrodes for symmetrical solid oxide fuel cell (SSOFC). X-ray diffraction (XRD) indicates that PBFNx samples have an orthorhombic structure and good chemical compatibility with electrolyte. Among all the samples, the PBFN0.1 symmetrical half-cell shows the lowest polarization resistance at 800 °C, which decreases by 29.2% compared with that of PBF in air and decreases by 59.9% compared with that of PBF in wet hydrogen atmospheres. The output performance of the single cell with PBFN0.1 as symmetrical electrodes achieves 197.10 mW cm<sup>−2</sup> in wet hydrogen atmospheres at 800 °C, which is an improvement of 31.97% compared with that of PBF. The enhanced electrochemical performance can be attributed to an increase in oxygen vacancy concentrations. The results suggest that the PBFN0.1 material is a potential candidate for SSOFC.</p></div>","PeriodicalId":599,"journal":{"name":"Ionics","volume":"30 10","pages":"6305 - 6319"},"PeriodicalIF":2.4,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784114","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
Biogenic synthesis of LiNiVO4 nanoparticles for the evaluation of photocatalytic and electrochemical applications 用于光催化和电化学应用评估的 LiNiVO4 纳米粒子的生物合成
IF 2.8 4区 化学
Ionics Pub Date : 2024-07-25 DOI: 10.1007/s11581-024-05729-5
M. Thejaswini, V. Lakshmi Ranganatha, C. Mallikarjunaswamy, S. Pramila, G. Nagaraju
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