IF 2.8 4区化学

Ionics Pub Date : 2024-08-24 DOI: 10.1007/s11581-024-05783-z

Tushar B. Deshmukh, Rajulal Sahu, Avinash C. Mendhe, Chinmayee Padwal, Deepak Dubal, Babasaheb R. Sankapal

{"title":"Microrod engraved bimetallic cobalt iron phosphate: electrode to liquid configured symmetric supercapacitive device","authors":"Tushar B. Deshmukh, Rajulal Sahu, Avinash C. Mendhe, Chinmayee Padwal, Deepak Dubal, Babasaheb R. Sankapal","doi":"10.1007/s11581-024-05783-z","DOIUrl":"https://doi.org/10.1007/s11581-024-05783-z","url":null,"abstract":"Present report explores microrod-shaped bimetallic cobalt iron phosphate grown through a cost-effective, single-run chemical route at 70 °C on stainless steel substrate. XRD, FTIR, TEM, and XPS analyses confirm the formation of the Co3Fe4(PO4)6 phase, wherein cobalt exhibits a +2 oxidation state, and iron adopts a +3 oxidation state. SEM analysis reveals the interlocking arrangement of micro-rods. Obtained surface architecture enhances structural integrity and establishes an efficient electrical channel for electron transfer which excels exceptional specific capacitance to 1643 F/g at a 5 mV/s scan rate (1208 F/g at 2.5 mA/cm2) with an impressive stability of 98% at 5000 CV cycles. These excellent outcomes spurred the fabrication of a symmetric supercapacitor, exhibiting 170 F/g specific capacitance at 5 mV/s with a 1.3 V potential window. In-depth analysis has been conducted to identify the origin of capacitive behavior, examining both surface and diffusion-controlled charge components. Through a practical demonstration, the constructed device effectively operated a 1 V DC fan, showcasing its promising practical applications.","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197855","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

Pt@Co-B catalyzed direct borohydride fuel cell anode: rational design and performance evaluation Pt@Co-B 催化直接硼氢化燃料电池阳极：合理设计与性能评估

IF 2.8 4区化学

Ionics Pub Date : 2024-08-24 DOI: 10.1007/s11581-024-05778-w

Sai Li, Zeyi Xin, Jinjin Han, Zhiming Feng, Guangning Liao, Shuoshuo Wang, Kai Liu, Qi Li, Terence Xiaoteng Liu, Maryam Bayati

引用次数: 0

Synthesis and transport properties of the brannerite-type oxides Na1-xV1-xMo1+xO6 糠酸盐型氧化物 Na1-xV1-xMo1+xO6 的合成和传输特性

IF 2.8 4区化学

Ionics Pub Date : 2024-08-23 DOI: 10.1007/s11581-024-05791-z

Fedorov D.S., Buzlukov A.L., Maksimova L.G., Medvedeva N.I., Denisova T.A., Tyutyunik A.P., Korona D.V., Baklanova Ya.V., Arapova I.Yu., Zabolotskaya E.V., Solodovnikov S.F.

{"title":"Synthesis and transport properties of the brannerite-type oxides Na1-xV1-xMo1+xO6","authors":"Fedorov D.S., Buzlukov A.L., Maksimova L.G., Medvedeva N.I., Denisova T.A., Tyutyunik A.P., Korona D.V., Baklanova Ya.V., Arapova I.Yu., Zabolotskaya E.V., Solodovnikov S.F.","doi":"10.1007/s11581-024-05791-z","DOIUrl":"https://doi.org/10.1007/s11581-024-05791-z","url":null,"abstract":"Widespread commercialization of sodium-ion batteries (SIB) is limited by the shortcomings of existing electrode materials, so the search and testing of various sodium compounds suitable for SIB are relevant. This paper presents the results of a study of the sodium diffusion mechanisms in quasi-layered oxides Na1-xV1-xMo1+xO6, which are potentially promising for applications for SIB. A simple synthesis procedure has been developed, which makes it possible to obtain compounds in a wide range of compositions up to x = 0.2. To elucidate the mechanisms of sodium diffusion, we applied a comprehensive approach that combines material characterization at the “macro” (XRD, impedance spectroscopy) and “atomic-scale” levels (NMR, ab-initio calculations). Our results reveal rather fast sodium dynamics: Ionic conductivity reaches the values of 10–3 S/cm at T > 730 K. It has been found moreover that the diffusion mechanism changes with increasing temperature. At T < 625 K, sodium motion occurs mainly along the crystallographic b axis due to atomic jumps with the shortest jump length ≈ 3.6 Å and activation energy Ea ~ 1 eV. With increasing temperature, another type of jumps along a axis (in the ab plane) with a jump length of ≈ 5 Å and a barrier value of 2 eV is also activated.","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197845","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

Influence of Sr doping on structural and electrical properties of ceria and performance of a single solid oxide fuel cell 掺杂硒对铈的结构和电学特性以及单一固体氧化物燃料电池性能的影响

IF 2.8 4区化学

Ionics Pub Date : 2024-08-22 DOI: 10.1007/s11581-024-05781-1

Taranveer Kaur, K. Singh, Jayant Kolte

{"title":"Influence of Sr doping on structural and electrical properties of ceria and performance of a single solid oxide fuel cell","authors":"Taranveer Kaur, K. Singh, Jayant Kolte","doi":"10.1007/s11581-024-05781-1","DOIUrl":"https://doi.org/10.1007/s11581-024-05781-1","url":null,"abstract":"Doped and undoped compositions of Ce1-xSrxO2-δ (x = 0, 0.025, 0.05, 0.075, and 0.1) are synthesized using the sol–gel auto-combustion method. The calcined powders are sintered at 1450 °C for four hours (h). The sintered samples are characterized and tested by various experimental techniques to study their structural, microstructural, and electrical properties as electrolytes for intermediate-temperature solid oxide fuel cells (IT-SOFC). The X-ray diffraction results confirm the single-phase formation except for the x = 0.1 sample, which also exhibited a minor secondary phase, i.e., SrCeO3. X-ray photoelectron spectroscopy (XPS) reveals the mixed oxidation state of cerium (Ce4+/Ce3+) in undoped and doped CeO2. The presence of oxygen vacancies has also been verified using Raman spectroscopy. The Sr creates oxygen vacancies and acts as the sintering aid to densify the samples. The highest conductivity is 6.46 × 10–3 S.cm−1 for x = 0.075 sample at 600 °C. The power density of the sample is about 89 mW.cm−2 at 600 °C. With a relative density of ~ 97%, the x = 0.075 sample can be used as a solid electrolyte in IT-SOFC.","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225363","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

Improving lithium-sulfur battery performance by protecting lithium anode with Li2S 用 Li2S 保护锂阳极，提高锂硫电池性能

IF 2.4 4区化学

Ionics Pub Date : 2024-08-21 DOI: 10.1007/s11581-024-05763-3

Yu Sun, Ting Zhang, Guo Ai, Birong Luo, Dejun Li, Bo Zhang

引用次数: 0

Electrical, structural, and electrochemical studies on novel nanocomposite polymer electrolyte PEO30NaC12H25SO4–x wt.% Fe2O3 新型纳米复合聚合物电解质 PEO30NaC12H25SO4-x wt.% Fe2O3 的电学、结构和电化学研究

IF 2.8 4区化学

Ionics Pub Date : 2024-08-21 DOI: 10.1007/s11581-024-05772-2

D. Joice Sheeba, Josephine Sangeetha Gerald, K. Venkatesh

引用次数: 0

Electrode polarization and ionic conduction relaxation in n-Hexanol and DMF Mixtures at 303.15 K: insights into molecular dynamics 正己醇和 DMF 混合物在 303.15 K 下的电极极化和离子传导弛豫：分子动力学的启示

IF 2.8 4区化学

Ionics Pub Date : 2024-08-20 DOI: 10.1007/s11581-024-05779-9

N. A. Chaudhary, K. N. Shah, C. R. Vaja, V. A. Rana, Deepak Kumar, A. N. Prajapati

{"title":"Electrode polarization and ionic conduction relaxation in n-Hexanol and DMF Mixtures at 303.15 K: insights into molecular dynamics","authors":"N. A. Chaudhary, K. N. Shah, C. R. Vaja, V. A. Rana, Deepak Kumar, A. N. Prajapati","doi":"10.1007/s11581-024-05779-9","DOIUrl":"https://doi.org/10.1007/s11581-024-05779-9","url":null,"abstract":"Using a precision LCR meter, the real and imaginary components of the complex relative dielectric function (ε*(f) = ɛ'(f)—jɛ”(f)) of the binary mixtures of n-Hexanol and N, N-Dimethylformamide were measured in the frequency range of 20 Hz to 2 MHz at a constant temperature of 303.15 K. Complex relative dielectric function ε*(f), was then converted into various formalisms namely: complex electric modulus M*(f), complex electrical conductivity σ*(f), and complex impedance Z*(f) in order to explore the electric and dielectric characteristics of the liquid samples. Loss tangent (tan δ = ɛ\"/ɛ') was determined from the complex relative dielectric function ε*(f). Further, ε*(f) was fitted to the Cole–Cole relaxation model to determine different dielectric and electrical parameters. Relaxation time associated with various relaxation processes observed in the considered frequency range of applied ac electric field are determined. Measured dielectric data are used to gain information about the effect of electrode polarization relaxation and ionic conduction relaxation process in the given mixture. Various parameters, including Debye Length (λD), Ion Mobility (μ), Mobile Ion Concentration (P0), and Ion Diffusivity (D) were computed for each binary mixture across constant temperature.","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142225358","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

Utilizing kraft lignin–derived hard carbon as an innovative bio-electrode in electrochemical capacitors 利用牛皮纸木质素衍生硬碳作为电化学电容器中的创新生物电极

IF 2.8 4区化学

Ionics Pub Date : 2024-08-20 DOI: 10.1007/s11581-024-05770-4

Beata Kurc, Marita Pigłowska, Paweł Fuć, Natalia Szymlet, Xymena Gross, Adam Piasecki

{"title":"Utilizing kraft lignin–derived hard carbon as an innovative bio-electrode in electrochemical capacitors","authors":"Beata Kurc, Marita Pigłowska, Paweł Fuć, Natalia Szymlet, Xymena Gross, Adam Piasecki","doi":"10.1007/s11581-024-05770-4","DOIUrl":"https://doi.org/10.1007/s11581-024-05770-4","url":null,"abstract":"In recent years, biomaterials are gaining popularity due to high need to make energy storage devices greener and safer. After the carbonization process, lignin has a slightly larger specific surface and a porous structure, which can provide a significant electrochemical double-layer capacity. When combined with kraft lignin as a binder, which helps maintain the structural integrity of the electrode, the efficient use of the active material can be enhanced. The binder facilitates better dispersion of carbonized lignin particles, reducing agglomeration and ensuring greater availability of active sites for electrolyte ions. The aim of this work is to present a novel lignin-based hard carbon as an electrode material for applications in electrochemical capacitors. To this end, a detailed physicochemical and electrochemical analysis was conducted. Kraft lignin was carbonized at temperatures ranging from 600 to 1000 °C. The resulting material is characterized by thermal stability, a low polydispersion index (PDI), and mesoporosity. Thermogravimetric (TG) analysis was used to determine changes in structure, while functional groups were analyzed using Fourier-transform infrared spectroscopy (FTIR). In electrochemical applications, the material exhibits high cyclic stability and no redox reactions, with the primary mechanism of charge accumulation being based on the electrochemical double layer. Additionally, low resistances contribute to improved charge storage.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197979","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

Superior sodium storage anode constructed via chemical bonding between S-doped hard carbon and graphene oxide binder 通过掺杂 S 的硬质碳和氧化石墨烯粘合剂之间的化学键合构建的优质储钠阳极

IF 2.8 4区化学

Ionics Pub Date : 2024-08-19 DOI: 10.1007/s11581-024-05776-y

Xue Li, Yating Zhang, Youyu Zhu, Yanping Hu, Yicheng Wang, Yizhen Zhang

{"title":"Superior sodium storage anode constructed via chemical bonding between S-doped hard carbon and graphene oxide binder","authors":"Xue Li, Yating Zhang, Youyu Zhu, Yanping Hu, Yicheng Wang, Yizhen Zhang","doi":"10.1007/s11581-024-05776-y","DOIUrl":"https://doi.org/10.1007/s11581-024-05776-y","url":null,"abstract":"Hard carbon stands out as one of the most prospective anode materials for the storage of sodium due to its abundant resources, low cost, high conductivity, and suitable potential. In this study, S-doped hard carbon (SFC/S-3) was synthesized from a mixture of Shenfu bituminous coal (SFC) and S powder via the one-step pyrolysis method. S doping effectively enlarged the carbon layer spacing, formed -C-SOx-C- bonds, and increased the specific surface area of the hard carbon, which significantly enhanced the sodium storage capacity of hard carbons. Furthermore, coal-based graphene oxide (CGO) was used as a multi-functional binder to further boost the sodium storage performance of SFC/S-3 by reducing the surface defects and forming a conductive network. Consequently, the SFC/S-3@CGO exhibited an excellent sodium storage performance, delivering a high reversible capacity of 449.4 mAh g−1, a high-rate capacity of 224.7 mAh g−1 at 1 A g−1, and approximately 74% capacity retention after 500 cycles at 1 A g−1. This study offers a versatile approach for heteroatom doping and promotes the clean utilization of coal.","PeriodicalId":599,"journal":{"name":"Ionics","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142197849","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

Hierarchical porous carbons derived from medicine residue for zinc ion hybrid capacitors 从药渣中提取的用于锌离子混合电容器的分层多孔碳

IF 2.8 4区化学

Ionics Pub Date : 2024-08-19 DOI: 10.1007/s11581-024-05774-0

Yutian Shao, Haowen Zhang, Ruirui Zhu, Yaning Miao, Enqin Rong, Qinghai Fang, Hongxin Fang

引用次数: 0

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