Journal of Solid State Electrochemistry最新文献_第4页

Dual-coated single-crystal LiNi0.6Co0.2Mn0.2O2 as high-performance cathode materials for lithium-ion batteries 作为高性能锂离子电池正极材料的双涂层单晶 LiNi0.6Co0.2Mn0.2O2

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-24 DOI: 10.1007/s10008-024-06048-5

Wanmin Liu, Sisha Zeng, Piaopiao Wang, Jing Huang, Bin Shen, Mulan Qin, Weigang Wang, Zexun Tang

{"title":"Dual-coated single-crystal LiNi0.6Co0.2Mn0.2O2 as high-performance cathode materials for lithium-ion batteries","authors":"Wanmin Liu, Sisha Zeng, Piaopiao Wang, Jing Huang, Bin Shen, Mulan Qin, Weigang Wang, Zexun Tang","doi":"10.1007/s10008-024-06048-5","DOIUrl":"https://doi.org/10.1007/s10008-024-06048-5","url":null,"abstract":"Due to its superior high discharge capacity and cycling stability, single-crystal LiNi0.6Co0.2Mn0.2O2 cathode materials are rapidly gaining traction in the realm of electric vehicle power batteries. Nevertheless, the deterioration of surface structure in single-crystal LiNi1−x−yCoxMnyO2 cathode materials is further exacerbated when operating at higher cutoff voltages (exceeding 4.5 V). In this work, a unique single-crystal LiNi0.6Co0.2Mn0.2O2 with ZnO and AlPO4 dual-coating modification has been synthesized. The similar crystal structure of ZnO and NCM results in a more compact coating, while the incorporation of AlPO4 enhances both the electronic conductivity (through the formation of conductive oxide Al-doped ZnO) and lithium-ion conductivity (via the formation of Li3PO4) within the coating. The coated SC-NCM cathode material exhibits excellent electrochemical performance even when operated at a higher cutoff voltage of 4.5 V. After 100 cycles (1 C, 2.75–4.5 V), the capacity retention for the ZnO and AlPO4 coated SC-NCM sample reaches 91.2%, significantly surpassing that of the pristine samples (40.0%). Specifically, it exhibited an outstanding rate property, maintaining a discharge capacity of 150.8 mA h g−1 at 8 C. The exceptional electrochemical properties can be attributed to the distinctive coating layer, which serves not only as a physical barrier to mitigate electrolyte side reactions but also facilitates rapid conduction of electrons and lithium ions.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"23 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226504","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 of flexible porous γ-Al2O3 nanofibers by electrospinning and its application in supercapacitor separator 电纺丝法制备柔性多孔γ-Al2O3 纳米纤维及其在超级电容器分离器中的应用

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI: 10.1007/s10008-024-06047-6

Jiajie Wen, Kechen Li, Kaizheng Xu, Runkang Li, Dongfeng Lv, Yi Cui, Yuejun Chen, Yingna Wei, Yang Yu, Yun Yu, Hengyong Wei

{"title":"Preparation of flexible porous γ-Al2O3 nanofibers by electrospinning and its application in supercapacitor separator","authors":"Jiajie Wen, Kechen Li, Kaizheng Xu, Runkang Li, Dongfeng Lv, Yi Cui, Yuejun Chen, Yingna Wei, Yang Yu, Yun Yu, Hengyong Wei","doi":"10.1007/s10008-024-06047-6","DOIUrl":"10.1007/s10008-024-06047-6","url":null,"abstract":"<div>In this paper, a 150-µm-thick flexible γ-Al2O3 nanofiber separator with the tensile strength of 0.22 MPa was prepared from the low-cost aluminum chloride hydroxide/polyvinyl alcohol (PVA)/water precursor materials by electrospinning method. The resultant separator with 3D interconnection nanostructure revealed fiber diameters in the range of 200 to 500 nm. The specific surface area, porosity, and electrolyte uptake of γ-Al2O3 nanofiber separator are 31.5 m2/g, 55%, and 1021%, higher than that of commercial polypropylene (PP) separator and glass fiber (GF) separator. The supercapacitor assembled with the γ-Al2O3 nanofiber separator exhibited a high discharge specific capacitance of 93 F/g at the current density of 1A/g, and there is almost no capacity decay after 10,000 cycles. The energy density of supercapacitor assembled with γ-Al2O3 nanofiber separator is 31.7 Wh/kg at the power density of 562.6 W/kg. Meanwhile, the rate performance of the supercapacitor is improved significantly due to the existence of porous structure and low ion diffusion resistance (0.78 Ω) of γ-Al2O3 nanofiber separator. In addition, the thermal performance of the γ-Al2O3 nanofiber separator is also excellent, which has almost no shrinkage at the temperature of 200 °C and cannot be ignited. Therefore, the obtained γ-Al2O3 nanofibers could serve as a promising alternative separator for a new generation of safe, high-power supercapacitors.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"28 11","pages":"4325 - 4338"},"PeriodicalIF":2.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207562","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

Computational simulation with experimental result correlation of organophosphate pesticides: Fenthion, Fenamiphos, and Azamethiphos 有机磷农药的计算模拟与实验结果的相关性：倍硫磷、甲胺磷和乙酰甲胺磷

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI: 10.1007/s10008-024-06037-8

Stefanny G. Costa, Thays S. Lima, Lúcia Codognoto, Hueder P. M. de Oliveira

{"title":"Computational simulation with experimental result correlation of organophosphate pesticides: Fenthion, Fenamiphos, and Azamethiphos","authors":"Stefanny G. Costa, Thays S. Lima, Lúcia Codognoto, Hueder P. M. de Oliveira","doi":"10.1007/s10008-024-06037-8","DOIUrl":"https://doi.org/10.1007/s10008-024-06037-8","url":null,"abstract":"Amidst growing food production demands caused by demographic expansion, the use of chemical pesticides became pivotal, being most notable for the increase in consumption of insecticide DDT. However, awareness of their environmental and health impacts led to the ban of DDT; the transition to alternatives such as carbamate and organophosphates needs to be investigated to understand the environmental and health impacts that may be associated. Nowadays, electroanalytical techniques have been used with a way to quantify pesticides, a practice and cost-effective form to investigate these substances. The present study investigates organic pesticide organophosphates (OPs), particularly Fenthion, Fenamiphos, and Azamethiphos—through density functional theory (DFT) using the functional B3LYP and the 6-31G(d) basis set. Optimization process reveals variations in atomic charges linked to phosphorus, indicating differing electronegativity levels, while electrostatic potential maps (EPMs) highlight regions susceptible to interaction, aiding in understanding molecular interactions. UV–Vis spectra analysis demonstrated similarity between theoretical and experimental spectra, with observed hyperchromic effects. Frontier molecular orbital (HOMO) analysis indicated Fenamiphos (− 0.2196 eV) as an electron donor and Azamethiphos (− 0.2455 eV) as an electron acceptor of the group, with cyclic voltammetry analysis revealing oxidation processes, with Fenamiphos (1.2 V) exhibiting the lowest oxidation potential followed by Fenthion (1.3 V) and Azamethiphos (1.7 V), consistent with theoretical predictions and demonstrating the good consistency of the results obtained experimentally. This concise study combines computational and experimental approaches to offer insights into the properties, behavior, and potential of these pesticides, crucial for understanding their environmental impact and toxicity.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"12 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207563","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 behavior of Co(II) polymer-modified glassy carbon electrode for the determination of dopamine 测定多巴胺的 Co(II) 聚合物改性玻璃碳电极的电化学行为

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI: 10.1007/s10008-024-06045-8

Nives Vladislavić, Ivana Škugor Rončević, Marijo Buzuk, Josipa Dugeč

{"title":"Electrochemical behavior of Co(II) polymer-modified glassy carbon electrode for the determination of dopamine","authors":"Nives Vladislavić, Ivana Škugor Rončević, Marijo Buzuk, Josipa Dugeč","doi":"10.1007/s10008-024-06045-8","DOIUrl":"10.1007/s10008-024-06045-8","url":null,"abstract":"<div>A new electrochemical sensor for the highly sensitive and selective determination of dopamine was developed, based on the use of a glassy carbon electrode modified with cobalt(II) polymer. Both electrochemical and morphological characterizations were investigated. Square wave voltammetry (SWV) was used for the determination of dopamine. From the SWV results obtained on the modified electrode under the optimized conditions, the successive addition of dopamine increased the anodic peak current. The results obtained show a linear response of the electrode modified with Co(II) polymer in a wide concentration range. Each concentration decade is characterized by a new calibration plot with a corresponding mathematical expression. The highest sensitivity (13.182) was obtained for the lowest concentration range, and the detection limit of 0.03 µM, calculated based on the 3 × sb/m criterion, indicates a very high sensitivity and great application potential. When analyzing a real sample, the modified electrode showed good electroanalytical activities in terms of oxidation of dopamine, good anti-interference ability, stability, reproducibility, and potential applicability in commercial pharmaceutical samples.\u0000</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"28 11","pages":"4311 - 4323"},"PeriodicalIF":2.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226505","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 novel indole-cyanoacetic acid derivative and its applications 新型吲哚-氰基乙酸衍生物的合成、表征及其应用

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI: 10.1007/s10008-024-06035-w

Müjgan Yaman, Hasan Mustafayev, Omruye Ozok Arici, Emrah Kavak, Halil Berber, Arif Kivrak, Hilal Kivrak

{"title":"Synthesis and characterization of novel indole-cyanoacetic acid derivative and its applications","authors":"Müjgan Yaman, Hasan Mustafayev, Omruye Ozok Arici, Emrah Kavak, Halil Berber, Arif Kivrak, Hilal Kivrak","doi":"10.1007/s10008-024-06035-w","DOIUrl":"https://doi.org/10.1007/s10008-024-06035-w","url":null,"abstract":"Herein, the novel organic catalyst, (E)-2-cyano-3-(5-(1-methyl-2-(naphthalen-1-yl)-1H-indol-3-yl)furan-2-yl)acrylic acid (8), was designed and synthesized. Initially, novel indole-cyanoacetic acid was prepared by using the Sonogashira coupling reaction, iodocyclization reaction, Suzuki–Miyaura coupling reaction, and condensation reactions. Then, electrochemical studies were carried out to investigate the anode electrocatalyst performance. Electrochemical techniques, including cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in a 1 M KOH + 0.5 M N2H4 solution, were employed to determine the hydrazine electro-oxidation performance of the catalyst (8). In addition, theoretical calculations were used to find band gap energies. Our D-A type organic catalyst (8) exhibits very high catalytic activity with 24.67 mA/cm2. D-A organic systems were shown to have the potential to be ecologically benign anode catalyst materials for hydrazine fuel cell applications.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207564","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 electrode temperature in anodic growth of sulfuric acid alumina films 电极温度在硫酸氧化铝薄膜阳极生长中的作用

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI: 10.1007/s10008-024-06036-9

Boriana Tzaneva, Igor Vrublevsky, Valentin Videkov, Nikita Lushpa

{"title":"Role of electrode temperature in anodic growth of sulfuric acid alumina films","authors":"Boriana Tzaneva, Igor Vrublevsky, Valentin Videkov, Nikita Lushpa","doi":"10.1007/s10008-024-06036-9","DOIUrl":"https://doi.org/10.1007/s10008-024-06036-9","url":null,"abstract":"Studies of the self-organized growth of nanoporous anodic aluminum oxide (AAO) films and anodization parameters have been the subject of decades of research and various theories. At the same time, temperature, being one of the most important parameters in anodizing treatments of aluminum, has been investigated only as a function of electrolyte temperature. This paper presents the results of studying the growth kinetics and morphology of AAO formed by anodization processes in 1 M H2SO4 at different anode temperatures. The activation energy of ionic conductivity for AAO determined in this study was 0.41 eV for sulfuric acid, which was greater than the activation energy of 0.34 eV for oxalic acid. The effect of anode temperature on the pore diameter (dpore) and the interpore distance (Dinter) was studied. It was demonstrated that in the temperature range from 10 to 40 °C, the dpore and Dinter did not change with the anode temperature, with values equal to 12.5 ± 0.1 nm and 52.5 ± 0.2 nm, respectively. However, when the anode (aluminum) temperature was increased to 60 °C, the dpore increased to 16 nm. The results obtained show that by increasing the temperature of the anode from 20 to 40 °C, it is possible to increase the ionic conductivity of AAO and thus achieve a greater than threefold increase in the the rate of AAO growth, without altering the porous morphology of the anodic films.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"79 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207565","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

Na/Co dual-doped olivine LiMn0.6Fe0.4PO4 cathode with superior reaction kinetics for Li-ion batteries Na/Co 双掺杂橄榄石 LiMn0.6Fe0.4PO4 阴极在锂离子电池中具有优异的反应动力学性能

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-17 DOI: 10.1007/s10008-024-06043-w

Pengxu Wang, Erdong Zhang, Yaoguo Fang, Yihong Chen, Haifeng Yu, Ya Zhang, Qian Cheng, Hao Jiang

{"title":"Na/Co dual-doped olivine LiMn0.6Fe0.4PO4 cathode with superior reaction kinetics for Li-ion batteries","authors":"Pengxu Wang, Erdong Zhang, Yaoguo Fang, Yihong Chen, Haifeng Yu, Ya Zhang, Qian Cheng, Hao Jiang","doi":"10.1007/s10008-024-06043-w","DOIUrl":"10.1007/s10008-024-06043-w","url":null,"abstract":"<div>Olivine-type lithium manganese iron phosphate (LMFP) has been a promising cathode for Li-ion batteries (LIB) owing to its superior safety performance and low cost, yet the intrinsic low ionic/electronic conductivities result in large electrochemical polarization and inferior rate performance. Herein, we report a LMFP with high-power Li-storage capability through a Na/Co co-doped strategy. The Na+ with a larger ionic radius (1.02 Å) locates at Li-sites, effectively widening the Li+ diffusion channel to improve the Li-ion transfer dynamic. The Co2+ located at transition metal sites (TM-sites) can lower the band gap to improve the electronic conductivity, while it can also alleviate the increase in the b-axis parameter to shorten the Li+ transfer path. Accordingly, the concurrently improved ionic/electronic transfer rate endows the superior rate performance of LMFP, with a high reversible capacity of 113.5 mAh g−1 at 5 C, much higher than the pristine sample (only 79.5 mAh g−1). The modified LMFP also displays excellent cycling stability, maintaining 97.1% of its initial capacity after 1000 cycles at 1 C.<h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"28 11","pages":"4303 - 4310"},"PeriodicalIF":2.6,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207566","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

Kinetics of oxygen exchange with oxides Ba0.5Sr0.5(Co0.8Fe0.2)1−xMexO3−ẟ (Me = Ta, W) in non-equilibrium conditions 非平衡条件下与 Ba0.5Sr0.5(Co0.8Fe0.2)1-xMexO3-ẟ（Me = Ta、W）氧化物的氧交换动力学

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-14 DOI: 10.1007/s10008-024-06034-x

A. R. Akhmadeev, V. A. Eremin, M. V. Ananyev

{"title":"Kinetics of oxygen exchange with oxides Ba0.5Sr0.5(Co0.8Fe0.2)1−xMexO3−ẟ (Me = Ta, W) in non-equilibrium conditions","authors":"A. R. Akhmadeev, V. A. Eremin, M. V. Ananyev","doi":"10.1007/s10008-024-06034-x","DOIUrl":"https://doi.org/10.1007/s10008-024-06034-x","url":null,"abstract":"Oxygen chemical surface exchange coefficient ({k}^{updelta }) for Ba0.5Sr0.5(Co0.8Fe0.2)1−xMexO3−ẟ (Me = Ta, W) has been measured by oxygen pressure relaxation method in the temperature range 600–800℃ and oxygen pressure 1.3–34.7 mbar. The comparison of the values of the tracer ({k}^{*}) and chemical ({k}^{updelta }) oxygen surface exchange rate constants allowed to evaluate the additional oxygen capacity of the surface layer, which is different from the bulk oxygen capacity, characterized by the thermodynamic factor ({text{w}}_{text{O}}=frac{1}{2}frac{partial text{ln}left({text{pO}}_{2}right)}{partial text{ln}left(3-updelta right)}) calculated from the (text{T}-{text{pO}}_{2}-left(3-updelta right))–diagram. The possible reasons were related to the specific phase composition of the surface layers responsible for the oxygen exchange process. The ({text{pO}}_{2}) dependence of the chemical oxygen exchange coefficient was discussed in terms of surface coverage with adsorbed oxygen anionic forms. The relationship between the mechanism of surface oxygen exchange, determined either during equilibration of oxygen pressure or gas phase composition (oxygen isotope exchange), was explained in terms of Fleig’s theory (https://doi.org/10.1039/b618765j). The relationship between the chemical composition of the surface and the mechanism of the surface oxygen exchange is discussed.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207568","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

Photocatalytic properties of BiFeO3 (BFO) synthesized by microwave-assisted hydrothermal method 微波辅助水热法合成的 BiFeO3 (BFO) 的光催化性能

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-14 DOI: 10.1007/s10008-024-06040-z

Flávio A. Knuth, Rogério D. Knuth, Cátia L. Ücker, Fábio C. Riemke, Cristiane W. Raubach, Mario L. Moreira, Mateus M. Ferrer, Pedro L. G. Jardim, Renato G. Cantoneiro, Valmor R. Mastelaro, Sérgio S. Cava

{"title":"Photocatalytic properties of BiFeO3 (BFO) synthesized by microwave-assisted hydrothermal method","authors":"Flávio A. Knuth, Rogério D. Knuth, Cátia L. Ücker, Fábio C. Riemke, Cristiane W. Raubach, Mario L. Moreira, Mateus M. Ferrer, Pedro L. G. Jardim, Renato G. Cantoneiro, Valmor R. Mastelaro, Sérgio S. Cava","doi":"10.1007/s10008-024-06040-z","DOIUrl":"10.1007/s10008-024-06040-z","url":null,"abstract":"<div>Bismuth ferrite, whose formula is BiFeO3 (BFO), is widely studied for its photovoltaic and photocatalytic properties. In this study, samples of this material were synthesized using the microwave-assisted hydrothermal method with the aim of measuring its ability to discolor contaminants present in water in previously formulated concentrations through photocatalysis. Photocatalysis is a process with great potential for applicability in the decontamination of effluents. The analysis process used a 1:1 molar ratio of bismuth nitrate to iron nitrate, with the addition of potassium hydroxide to the aqueous solution. Two samples were synthesized at different temperatures, specifically 140 °C and 160 °C. An X-ray diffraction analysis revealed that the synthesized samples were in an amorphous state. Photocatalytic tests were carried out to evaluate the ability of these materials to decolorize rhodamine B present in water in a previously known proportion. A sample synthesized at 140 °C successfully decolorized the solution within 60 min, providing its potential application in photocatalytic processes for decolorization of organic substances from wastewater. In turn, a sample synthesized at 160 °C discolored or contaminated in a slightly longer time. The samples were also subjected to a temperature of 750 ºC until crystallinity was reached. However, photocatalytic tests with crystalline samples performed less well than amorphous samples.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"28 11","pages":"4291 - 4301"},"PeriodicalIF":2.6,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-024-06040-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced high-rate and cyclic performance of Co-free and Ni-rich LiNi0.95Mn0.05O2 cathodes by coating electronic/Li+ conductive PANI-PEG layer 通过涂覆电子/锂+导电 PANI-PEG 层提高无钴和富镍 LiNi0.95Mn0.05O2 阴极的高速率和循环性能

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-08-13 DOI: 10.1007/s10008-024-06044-9

Peng He, Maolin Zhang, Saijing Wang, Meng Wan, Dongqing Wang, Yuan Wang, Yangxi Yan, Dongyan Zhang, Xiaofei Sun

{"title":"Enhanced high-rate and cyclic performance of Co-free and Ni-rich LiNi0.95Mn0.05O2 cathodes by coating electronic/Li+ conductive PANI-PEG layer","authors":"Peng He, Maolin Zhang, Saijing Wang, Meng Wan, Dongqing Wang, Yuan Wang, Yangxi Yan, Dongyan Zhang, Xiaofei Sun","doi":"10.1007/s10008-024-06044-9","DOIUrl":"10.1007/s10008-024-06044-9","url":null,"abstract":"<div>Co-free and Ni-rich LiNi0.95Mn0.05O2 (NM95) cathodes are expected to be widely employed in power batteries due to their high charge storage capacity and cost-effectiveness. However, the loss of Co and increase in Ni contents result in highly active surfaces and unstable structures, compromising rate capability and cyclic stability. Herein, polyaniline-polyethylene glycol (PANI-PEG) coating layer, with excellent electronic and Li-ion conductivity, is introduced on NM95 surface to enhance charge transfer properties and cyclic stability. Several material and electrochemical characterization techniques, such as XRD, SEM, EDS, TEM, XPS, 4-point probe, CV and EIS, are utilized to unveil the positive influence of PANI-PEG on electrochemical performance. The results reveal that PANI-PEG layer can promote electron and Li+ conduction of NM95 due to the excellent electronic and Li+ conductivities. Besides, PANI-PEG acts as protective layer to hinder the corrosion of electrolyte and suppress side reactions. It is revealed that NM95 cathode coated with PANI-PEG with a mass ratio of 4/6, exhibits excellent initial capacity, as high as 219.4 and 163.1 mAh/g at 1 C and 5 C, respectively, and maintains capacity retention of 94.7% (1 C, 100th cycle) and 79.0% (5 C, 200th) under cut-off voltage of 4.3 V (vs. Li/Li+). Moreover, NM95 exhibits capacity retention of 70.7% after 100 charge/discharge cycles at 1 C within voltage range of 2.7 to 4.5 V (vs. Li/Li+). These results indicate that coating electronic/Li+ conductor is effective strategy to enhance rate performance and cyclic stability of Co-free and Ni-rich cathodes.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"28 11","pages":"4259 - 4271"},"PeriodicalIF":2.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207587","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