Journal of Electroanalytical Chemistry最新文献_第7页

Reaction characteristics of molten carbonate cell operated in fuel cell and electrolysis modes with reactant gas addition method 熔融碳酸盐电池在燃料电池和反应物气体加入法电解模式下的反应特性

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117577

Samuel Koomson, Choong-Gon Lee

{"title":"Reaction characteristics of molten carbonate cell operated in fuel cell and electrolysis modes with reactant gas addition method","authors":"Samuel Koomson, Choong-Gon Lee","doi":"10.1016/j.jelechem.2023.117577","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117577","url":null,"abstract":"<div>This work compares the electrode reaction mechanisms of 100 cm2 class molten carbonate cells (MCCs) operated in electrolysis cell (EC) and fuel cell (FC) modes using a reactant gas addition (RA) method. The RA method reveals essential information on an electrode reaction mechanism by measuring the overpotential of an electrode resulting from adding a reactant. The hydrogen electrode (HE) is revealed to be under a gas-phase mass transfer-controlled process in both modes. In addition, the HE overpotential at an inlet composition of H2: CO2: H2O = 0.3: 0.3: 0.4 atm is caused mainly by H2 species in FC mode, while CO2 contributes the majority in EC mode due to the production of H2 and consumption of CO2 by the water–gas shift reaction. On the other hand, most of the oxygen electrode (OE) overpotential is contributed by O2 species in both modes. The overpotential induced by O2 species was larger in FC mode than EC mode because EC mode generates O2 and provides less mass transfer resistance of O2 species in the liquid phase. The addition of CO2 to the OE raised overpotential in both modes. The overpotential was especially large in FC mode due to the reduced O2 partial pressure and relatively low in EC mode because of O2 generation. Therefore, the total overpotential in EC mode is less than in FC mode.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117577"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3205662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 sensor based on N,P–doped carbon quantum dots derived from the banana flower bract (Musa acuminata) biomass extract for selective and picomolar detection of dopamine 基于N, p掺杂碳量子点的电化学传感器，从香蕉花苞片(Musa acuminata)生物质提取物中提取多巴胺选择性和皮摩尔检测

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117609

A. Padmapriya , P. Thiyagarajan , M. Devendiran , R.A. Kalaivani , A.M. Shanmugharaj

{"title":"Electrochemical sensor based on N,P–doped carbon quantum dots derived from the banana flower bract (Musa acuminata) biomass extract for selective and picomolar detection of dopamine","authors":"A. Padmapriya , P. Thiyagarajan , M. Devendiran , R.A. Kalaivani , A.M. Shanmugharaj","doi":"10.1016/j.jelechem.2023.117609","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117609","url":null,"abstract":"<div>A facile route was proposed in preparing phosphorus and nitrogen dual carbon quantum dots (N,P-CQD) from banana flower bract extract by hydrothermal synthesis for selective and reliable detection of catecholamines such as dopamine (DA). By morphologically characterizing the synthesized CQD using Transmission Electron Microscopy (TEM), it is discovered that its average particle size is 3.8 nm. While the doping of the heteroatoms upsurges the electrical conductivity of the CQD, the presence of the functional sites like acid (–COOH), (–NH2) and phosphate (-PO43-) groups selectively attract the cations via., an ion-exchange mechanism leaving behind the anions, due to the electrostatic repulsion. The synthesized N,P-CQD/PIGE electrode-based electrochemical sensors demonstrated high selectivity and sensitivity for DA with a relatively low limit of detection (LOD) (∼500 pM) and a wide linear range, extending from 6.0 μM to 0.1 mM. The N,P-CQD's detection selectivity is further validated by utilizing a combination with a somewhat larger concentration of uric (UA) and ascorbic (AA) acids and only a modest amount of DA. Additionally, the N,P-CQD/PIGE electrode successfully detects DA with a LOD as low as 630 pM and a larger linear range of 2.5 M to 0.16 mM in real-time samples of dopamine injection.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117609"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3205664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 1

Understanding the impact of reaction parameters on electrochemical reduction of CO2 to methanol: Activity relationship of cuprite@polyaniline electrodes 了解反应参数对CO2电化学还原制甲醇的影响:cuprite@polyaniline电极的活性关系

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117721

Atul A. Pawar, Harshad A. Bandal, Anand Rajkamal, Hern Kim

{"title":"Understanding the impact of reaction parameters on electrochemical reduction of CO2 to methanol: Activity relationship of cuprite@polyaniline electrodes","authors":"Atul A. Pawar, Harshad A. Bandal, Anand Rajkamal, Hern Kim","doi":"10.1016/j.jelechem.2023.117721","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117721","url":null,"abstract":"<div>The carbon dioxide reduction reaction (CO2RR) is a key reaction that efficiently uses CO2 to produce value-added chemicals. However, the main limitation of this reaction is its low selectivity which results in the formation of a variety of by-products. As a result, the current challenge for CO2RR is the efficient formation of product with high Faradaic efficiency (FE). Our main goal is to replace precious metal electrocatalysts with more abundant transition metal/conducting support hybrid catalysts. Herein, we’ve synthesized a cuprite-polyaniline (Cu2O@PANI) composites. The superior catalytic activity in terms of activity and selectivity for methanol (MeOH) synthesis could be attributed to the synergism between Cu2O and PANI that enables it to scale back multiple species, higher electrical conductivity, and lowest resistance during the charge/mass transfer processes. These properties were confirmed using Electrochemical impedance spectroscopy (EIS), Electron transfer rate constant (Ks), Mott-Schottky (MS), Double-layer capacitance (DLC), and Density-functional theory (DFT) analysis. Based on these findings Cu2O@PANI matrix easily forms many intermediate (CO) species and maintains a higher CO2 concentration around the electrode surface throughout the experiment. The results of the given electrocatalytic system show that the Cu2O@PANI matrix significantly suppressed the by-product throughout the experiment, resulting in MeOH (45.21%) FE within 90 min. Given these benefits, the catalytic system is appropriate for CO2RR.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117721"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3463525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Bis- and tris-amino-substituted tetraphenylporphyrins. Comparative electrochemistry, film formation and ORR response of the films in alkaline media 二和三氨基取代的四苯基卟啉。比较电化学、成膜及膜在碱性介质中的ORR响应

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117594

Sergey M. Kuzmin, Svetlana A. Chulovskaya, Vladimir I. Parfenyuk

{"title":"Bis- and tris-amino-substituted tetraphenylporphyrins. Comparative electrochemistry, film formation and ORR response of the films in alkaline media","authors":"Sergey M. Kuzmin, Svetlana A. Chulovskaya, Vladimir I. Parfenyuk","doi":"10.1016/j.jelechem.2023.117594","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117594","url":null,"abstract":"<div>The paper analyzes how the structure of porphyrin affects its electrochemical characteristics, film formation process and physicochemical properties of the obtained materials. A comparison of the redox processes of 21H,23H-5,15-bis-(4-aminophenyl)-10,20-di-phenyl porphyrin (Porph I) and 21H,23H-5,10,15-tris-(4-aminophenyl)-20-phenyl porphyrin (Porph II) shows that Porph I is more stable in oxidation and less stable in reduction processes than Porph II. The presence of electrochemically active amino groups in the composition of the porphyrin molecules allows the superoxide-assisted electrochemical deposition method to be applied to successfully form poly-Porph I and poly-Porph II films from dimethyl sulfoxide solutions. Spectral methods confirm that the obtained materials preserve their porphyrin structure. The structure of the initial monomer molecules is demonstrated to affect the film formation and surface morphology of the prepared materials. Oxygen electroreduction in an alkaline medium is shown to have smaller kinetic limitations on poly-Porph II films than that on poly-Porph I ones.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117594"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2620196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Direct electron transfer kinetics of histamine dehydrogenase at air plasma-treated graphite nanofibers 空气等离子体处理石墨纳米纤维中组胺脱氢酶的直接电子转移动力学

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117621

Kikuo Komori , Shinnosuke Takumi , Kiichi Kato , Kazuya Matsumoto , Kohei Shiraishi , Hiroshi Kimura , Kazutake Takada

{"title":"Direct electron transfer kinetics of histamine dehydrogenase at air plasma-treated graphite nanofibers","authors":"Kikuo Komori , Shinnosuke Takumi , Kiichi Kato , Kazuya Matsumoto , Kohei Shiraishi , Hiroshi Kimura , Kazutake Takada","doi":"10.1016/j.jelechem.2023.117621","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117621","url":null,"abstract":"<div>As histamine is one of the important mediators for allergic reactions, its efficient detection methods and real-time monitoring systems are required for food analyses and drug discoveries to suppress allergic reactions. Although histamine dehydrogenase (HmDH) is a promising candidate for developing enzyme-based electrochemical biosensors, some electron mediators are frequently employed to observe electrocatalytic currents for histamine oxidation. Here, direct electrochemistry of HmDH was studied at the surface of graphite nanofibers (GNFs), which provide active reaction sites for redox species. Air plasma-treated GNFs were used for constructing a three-dimensional network that works both as an electrical nanowire and an enzyme support. Even though the amount of oxygen-containing functional groups didn’t significantly increase at the GNF surface with increase in the air plasma treatment time, direct electron transfer from reduced HmDH by histamine to the GNFs was improved probably due to capped and curvature of the graphite edge sites with oxygen-containing functional groups, which were generated by the air plasma treatment. The air plasma-treated GNFs also allowed enhancement of the complex-formation reaction rate of HmDH with histamine, as the air plasma treatment time increased.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117621"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1559748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 coupling mechanism of anodic oxygen evolution reaction during organic pollutants oxidation 有机污染物氧化过程中阳极析氧反应的耦合机理

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117608

Yucheng Liu, Haoran Sun, Jing Hou, Jinyin Bai, Lizhang Wang

{"title":"A coupling mechanism of anodic oxygen evolution reaction during organic pollutants oxidation","authors":"Yucheng Liu, Haoran Sun, Jing Hou, Jinyin Bai, Lizhang Wang","doi":"10.1016/j.jelechem.2023.117608","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117608","url":null,"abstract":"<div>In this work, β-PbO2/Ti and RuO2-IrO2/Ti anodes and Ti cathodes were employed to conduct electrocatalytic phenol degradation experiments at various current densities. The difference in degradation rates between the two anodes indicated that the oxygen evolution reaction (OER) is related to the organic matter concentration. Consequently, a coupling mechanism “active-site competition mechanism (ACM) + adsorbate evolution mechanism (AEM)” for anodic oxygen evolution was described. Based on this mechanism and experimental results, it can be concluded that the ACM influences the initial degradation rate, and the AEM affects final organic matter concentrations. DFT calculations showed that RuO2-IrO2 exhibits excellent AEM activity attributed to the lower OER overpotential (0.7 V) and stronger adsorption energies of *O oxygenated intermediate (-1.52 eV). At the same time, RuO2-IrO2 possesses slight thermodynamic reaction energy of ACM, which are 103.3, 31.6 and 89.5 kJ/mol. Therefore, the slower degradation rates and lower removal efficiency on RuO2-IrO2/Ti are owing to the better ACM and AEM activity. Then, electrocatalytic experiments at various pH were conducted to verify the conclusion that AEM affects final organic matter concentrations. Finally, this work has implications for a better understanding of the OER mechanism and provides theoretical guidance for improving the removal efficiency of organic pollutants.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117608"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"1806862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 1

Effect of deposition potential on electrodeposition of Sn-Ag-Cu ternary alloy solderable coating in deep eutectic solvent 沉积电位对Sn-Ag-Cu三元合金可焊镀层在深共晶溶剂中电沉积的影响

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117613

Jiacheng Huang , Wenchang Wang , Qian Xiang , Shuiping Qin , Pengju Wang , Naotoshi Mitsuzaki , Zhidong Chen

{"title":"Effect of deposition potential on electrodeposition of Sn-Ag-Cu ternary alloy solderable coating in deep eutectic solvent","authors":"Jiacheng Huang , Wenchang Wang , Qian Xiang , Shuiping Qin , Pengju Wang , Naotoshi Mitsuzaki , Zhidong Chen","doi":"10.1016/j.jelechem.2023.117613","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117613","url":null,"abstract":"<div>Ternary Sn-Ag-Cu solderable alloy coatings were electrodeposited using deep eutectic solvent-based electrolytes, at different deposition potentials. The obtained deposits have been characterized from surface morphology, composition, crystalline grain and phase via Scanning Electron Microscopy (SEM) associated with Energy Dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). To get information on the alloy melting point, Differential Scanning Calorimetry (DSC) has been involved.The results showed that the crystalline grain became finer and the coating became denser as the deposition potential increased. In addition, the presence of Cu6Sn5 phase is facilitated by more cathodic deposition potentials while the Ag3Sn phase was evidenced at lower potential values. The value of the melting point of Sn-Ag-Cu alloy (Sn90.9-Ag7.6-Cu1.5) deposited at potentials of −1.2 V was of 215.02 ℃. Based on the results obtained during the analysis of the current–time curves using the Scharifker-Hills' model, it has been found that both single metal and alloy deposition processes correspond to a nucleation and tridimensional growth controlled by diffusion. The deposition processes of Sn and Ag are conducted by an instantaneous mechanism, while in the case of Cu, a progressive one has been determined. The deposition process of Sn-Ag-Cu alloy showed a deviation from the instantaneous nucleation.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117613"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2560421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Core-shell structured Si@Cu nanoparticles segregated in graphene-carbon nanotube networks enable high reversible capacity and rate capability of anode for lithium-ion batteries 在石墨烯-碳纳米管网络中分离的核壳结构Si@Cu纳米颗粒使锂离子电池阳极具有高可逆容量和高倍率性能

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117614

Jing-Zhou Chen , Lei Zhang , Fen Gao , Meng-Xin Ren , Yun-Lei Hou , Dong-Lin Zhao

{"title":"Core-shell structured Si@Cu nanoparticles segregated in graphene-carbon nanotube networks enable high reversible capacity and rate capability of anode for lithium-ion batteries","authors":"Jing-Zhou Chen , Lei Zhang , Fen Gao , Meng-Xin Ren , Yun-Lei Hou , Dong-Lin Zhao","doi":"10.1016/j.jelechem.2023.117614","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117614","url":null,"abstract":"<div>The volume expansion of Si electrodes and the poor conductivity of Si as well as the repeated rupture of solid electrolyte interface (SEI) lead to the rapid capacity decay of Si-based anode Li-ion batteries. The rational design of anode materials for the above problems is considered an effective solution. In this work, core-shell structured Si@Cu nanoparticles segregated in graphene-carbon nanotube networks (Si@Cu/CNT/rGO) is constructed by one-step hybrid and reduction self-assembly strategy. First, metallic copper was coated on silicon nanoparticles to improve the reaction kinetics of the cell during operation. The flexible reduced graphene oxide and rigid carbon nanotube are designed as a network structure for increasing the electrical conductivity and mechanical strength of the electrode material. This design not only provides sufficient buffering space for the volume change during cell operation, but also improves the electron migration effect of the composite Si@Cu/CNT/rGO. Thanks to this design, the composite electrode maintains a high lithium storage capacity of 1915.5 mAh/g (130 cycles) and 1486.7 mAh/g (200 cycles) after charging and discharging at 100 mA g−1 and 1000 mA g−1, respectively.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117614"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3203178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 5

Surface-vacancy filling engineered MnO cobalt with cobalt phthalocyanine for admirable suppression of volume expansion and kinetics enhancement 用酞菁钴填充MnO钴表面空位可有效抑制体积膨胀和提高动力学

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117720

Wenhao Yu, Shaofeng Xu, Jiancong Guo, Weiqiang Kong, Wenruo Li, Xu Han, Haoyuan Zhu, Shun Liu, Luzheng Zhao, Zhongsheng Wen

{"title":"Surface-vacancy filling engineered MnO cobalt with cobalt phthalocyanine for admirable suppression of volume expansion and kinetics enhancement","authors":"Wenhao Yu, Shaofeng Xu, Jiancong Guo, Weiqiang Kong, Wenruo Li, Xu Han, Haoyuan Zhu, Shun Liu, Luzheng Zhao, Zhongsheng Wen","doi":"10.1016/j.jelechem.2023.117720","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117720","url":null,"abstract":"<div>MnO has the advantages of high theoretical capacity, abundant resources and environmental friendliness, which is a potential material for lithium-ion storage. However, severe volume expansion and sluggish kinetics make MnO difficult to maintain long-term stability. In this study, MnO/C@CoPPc micro-rods composed of coral-like MnO/C nanobundles coated with CoPPc was synthesized via facile method. CoPPc impregnated into the empty space and simultaneously coated on the surface of the needles of MnO/C functions as an elastic layer to accommodate the mechanical stress caused by volume expansion of MnO/C, and simultaneously function as a buffering layer to keep electric disconnection on cycling. The volume of MnO/C is dramatically suppressed from 370% to 120%, and the reversible capacity is improved. Therefore, the configured MnO/C@CoPPc exhibits a high stability and delivers a high reversible capacity of 679.6 mAh/g after 200 cycles.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117720"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3146953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Promising electrochemical performance of pristine SnO2 anodes for lithium and sodium-ion batteries 锂离子电池和钠离子电池用原始SnO2阳极的电化学性能

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-08-15 DOI: 10.1016/j.jelechem.2023.117625

Veena Ragupathi , Y. Lokeswararao , Soumyadip Mitra , C. Sudakar

{"title":"Promising electrochemical performance of pristine SnO2 anodes for lithium and sodium-ion batteries","authors":"Veena Ragupathi , Y. Lokeswararao , Soumyadip Mitra , C. Sudakar","doi":"10.1016/j.jelechem.2023.117625","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117625","url":null,"abstract":"<div>Sustainable materials with nanostructured architecture have made great strides in today’s energy storage technology. In this context, sustainable, environment-friendly SnO2 are synthesised by hydrothermal method and its electrochemical performance as anode material for lithium and sodium-ion batteries are investigated. Structural analysis such as X-ray diffraction and Raman measurement validates the formation of the tetragonal rutile structure of pristine SnO2. Scanning electron microscope image shows mixed, hollow spherical and rod- shape morphology. The Li+ and Na+ ion diffusion kinetics are conferred using cyclic voltammetry. The rate capability of pristine SnO2 anodes are tested using charge–discharge measurements. SnO2/Li half-cell shows the initial discharge capacity of 982 mAh/g at 0.1C rate and delivers the specific capacity of 219 mAh/g and 72 mAh/g at 10C and 20C rates. The SnO2/Na half-cell delivers the initial discharge capacity of 600 mAh/g and maintains the specific capacity of 110 mAh/g (1C-rate) after 500 charge–discharge cycles. The mixed spherical and rod shape morphology increases the surface area and facilitates the Li+ and Na+-ion diffusion and minimizes pulverization. Post-mortem microstructural studies are performed after 500 cycles, confirming the formation of inert oxide phases and degradation of electrolyte by-products in both LIB and SIB.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"943 ","pages":"Article 117625"},"PeriodicalIF":4.5,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2560425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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