Journal of Solid State Electrochemistry最新文献_第7页

Fructose sensing via a flexible photoelectrochemical microfluidic fuel cell based on a ZnO/praseodymium composite 基于ZnO/镨复合材料的柔性光电化学微流控燃料电池的果糖传感

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-11-11 DOI: 10.1007/s10008-024-06138-4

Víctor M. Ovando-Medina, A. Dector, Hugo Martínez-Gutiérrez, Hector F. Mendoza-León, Juan Manuel Olivares-Ramírez, E. G. Villabona-Leal, Gilberto Ruíz-Cruz, I. L. Vera-Estrada

{"title":"Fructose sensing via a flexible photoelectrochemical microfluidic fuel cell based on a ZnO/praseodymium composite","authors":"Víctor M. Ovando-Medina, A. Dector, Hugo Martínez-Gutiérrez, Hector F. Mendoza-León, Juan Manuel Olivares-Ramírez, E. G. Villabona-Leal, Gilberto Ruíz-Cruz, I. L. Vera-Estrada","doi":"10.1007/s10008-024-06138-4","DOIUrl":"10.1007/s10008-024-06138-4","url":null,"abstract":"<div>Fatty liver and other related diseases are caused mainly by fructose consumption from nonalcoholic sweetened beverages; therefore, the development of new techniques, materials, and practical devices for its quantification is important for clinical diagnosis. In the present work, composites based on zinc oxide (ZnO) and different praseodymium concentrations were prepared by precipitation in alkaline aqueous media. Composites of ZnO/praseodymium were characterized by ultraviolet/visible-near infrared (UV/Vis-NIR) and Fourier transform infrared (FTIR) spectroscopies, thermogravimetry (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The composites consisted of ZnO microparticles of cabbage-like morphologies with sizes of 850 ± 253 nm and a thickness of 36.6 ± 1 nm, which were decorated with praseodymium particles of rice-like morphology with different sizes depending on the praseodymium concentration. The composites exhibited photoactivity in the UV and visible regions, with characteristic absorbances due to the presence of fluorophores in the near-infrared region. ZnO/praseodymium composites were characterized electrochemically in half-cells under visible light irradiation at different fructose concentrations to determine their detection limit, which was between 30 and 40 mM fructose. The composite with 2% praseodymium with respect to Zn2+ showed the best linearity; therefore, it was tested as a photoanode for fructose oxidation in a flexible and transparent photoelectrochemical microfluidic fuel cell with an interval of 5 to 50 mM fructose, with a 40 mM fructose concentration and a power density of 0.142 mW/cm2 under illumination compared with 0.101 mW/cm2 in the dark (∼ 40% higher).</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1813 - 1827"},"PeriodicalIF":2.6,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821724","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

Chromium tolerance of high entropy BaO impregnated-(La0.2Pr0.2Sm0.2Gd0.2Nd0.2)Ba0.5Sr0.5Co1.5Fe0.5O5(LPSGNBSCF) cathodes for solid oxide fuel cell 固体氧化物燃料电池用高熵BaO浸渍-(La0.2Pr0.2Sm0.2Gd0.2Nd0.2)Ba0.5Sr0.5Co1.5Fe0.5O5（LPSGNBSCF）阴极的铬耐受性

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-11-07 DOI: 10.1007/s10008-024-06100-4

Xintao Wang, Jianyi Zhong, Zhanggui Li, Jiali Xiang, Bingxue Hou, Zanxiong Tan, Lisha Liu, Cheng Cheng Wang

{"title":"Chromium tolerance of high entropy BaO impregnated-(La0.2Pr0.2Sm0.2Gd0.2Nd0.2)Ba0.5Sr0.5Co1.5Fe0.5O5(LPSGNBSCF) cathodes for solid oxide fuel cell","authors":"Xintao Wang, Jianyi Zhong, Zhanggui Li, Jiali Xiang, Bingxue Hou, Zanxiong Tan, Lisha Liu, Cheng Cheng Wang","doi":"10.1007/s10008-024-06100-4","DOIUrl":"10.1007/s10008-024-06100-4","url":null,"abstract":"<div>The development of high-performance and chromium-tolerant stable hierarchical cathodes is crucial for practical applications of solid oxide fuel cells (SOFCs). This work presents a synergistic strategy to manufacture hierarchical cathodes, focusing on optimizing microstructural and electrochemical properties. By integrating advanced fabrication techniques, including nanostructuring and surface engineering, we achieved a significant enhancement in high entropy double perovskite cathode. The electrochemical activities and chromium tolerance of BaO impregnated on (La0.2Pr0.2Sm0.2Gd0.2Nd0.2)Ba0.5Sr0.5Co1.5Fe0.5O5 (LPSGNBSCF) high-entropy double perovskite cathodes in SOFCs were investigated in this study. Here, an optimum coated amount of BaO-LPSGNBSCF-0.15 mol/L electrode exhibited smaller electrode polarization resistance (Rp) of 0.22 Ω cm2 than pure LPSGNBSCF electrode with Rp of 0.5 Ω cm2 operating at 800 °C in the presence of Cr2O3 for 100 h. The synergistic catalyst coating of BaO-LPSGNBSCF-0.15 M could lead to less Cr deposition and SrCrO4 formation on LPSGNBSCF after exposure to Cr2O3. Moreover, the cell delivered the maximum power density of 985.9 mW/cm2 at 800 °C, higher than 803.1 mW/cm2 of bare LPSGNBSCF single cell and showed good stability with 100 h in short-term test. This work elucidated a rational design of efficient and durable high-entropy-based chromium tolerant cathode for SOFCs.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1787 - 1800"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821743","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

Cubic silicon carbide anode material for low-temperature solid oxide fuel cell 低温固体氧化物燃料电池用立方碳化硅负极材料

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-11-06 DOI: 10.1007/s10008-024-06128-6

Asif Hassan Raza, Shumail Farhan, Amjad Ali, Amina Sarfraz, Muhammad Ashfaq Ahmad, Mikael Syväjärvi, Rizwan Raza

{"title":"Cubic silicon carbide anode material for low-temperature solid oxide fuel cell","authors":"Asif Hassan Raza, Shumail Farhan, Amjad Ali, Amina Sarfraz, Muhammad Ashfaq Ahmad, Mikael Syväjärvi, Rizwan Raza","doi":"10.1007/s10008-024-06128-6","DOIUrl":"10.1007/s10008-024-06128-6","url":null,"abstract":"<div>Cubic silicon carbide (3C-SiC) synthesized with different methods was investigated as the anode material of low-temperature solid ceramic fuel cells because of high electron mobility, excellent thermal and mechanical stability, and high electrochemical reactivity towards redox-based reactions as well as low leakage current. The sample prepared via the carbothermal reduction method has multiple phases of cubic SiC (JCPDS 01–075-0254), SiO2 (01–076-0933), and quartz (00–008-0415), respectively. Further samples developed using hydrothermal and solid-state methods show the cubic structure of SiC with JCPDS No. 01–073-1708. Fourier transform spectroscopy confirms the presence of Si–C, Si–C and Si–O bonds in the synthesized material. Raman analysis shows the transverse optical line of Si–C stretching mode in all three samples at 801 cm−1. Thermal analysis reveals that the sample prepared using the solid-state method is more stable due to negligible weight loss and less decomposition during thermal heat treatment. The microstructure of materials synthesized using the solid-state method has more porosity, and therefore, better electrical conductivity of 1.1 Scm−1 is obtained compared to other samples synthesized by the hydrothermal method and carbothermal reduction method, respectively. The cell reached the maximum power density of 100 mW cm−2 with an open circuit voltage of 1.1 V at 550 °C. This work demonstrates an innovative synthesis method for 3C-SiC and novel material for developing highly efficient anode materials of solid ceramic fuel cells.<h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1777 - 1785"},"PeriodicalIF":2.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821741","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 review on lithium extraction by electrochemical electrode deionization technology 电化学电极去离子法提取锂研究进展

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-11-04 DOI: 10.1007/s10008-024-06123-x

Ming Liu, Haolin Li, Hongjiang Chi, Shuaiwei Chen, Hui Wang, Chen Wang, Xiumei Ma, Zhengyou Zhu, Faqiang Li

{"title":"A review on lithium extraction by electrochemical electrode deionization technology","authors":"Ming Liu, Haolin Li, Hongjiang Chi, Shuaiwei Chen, Hui Wang, Chen Wang, Xiumei Ma, Zhengyou Zhu, Faqiang Li","doi":"10.1007/s10008-024-06123-x","DOIUrl":"10.1007/s10008-024-06123-x","url":null,"abstract":"<div>In the past few decades, with the rapid development and wide application of lithium-ion battery, the demand for lithium resources has increased significantly. Lithium resources mainly exist in Salt Lake, so extracting lithium from Salt Lake is of great significance. Since Mg2+ and Li+ have similar ionic radius and chemical property, the main difficulty in extracting lithium from Salt Lake is the separation of Mg2+ and Li+. Current techniques in the common use of separating Mg2+ and Li+ from Salt Lake mainly include the extraction method, adsorption method, and membrane method. Electrochemical electrode deionization (EEDI), also known as capacitive deionization in its early days, is a promising water desalination technology that has the advantages of environmental friendliness, low cost, low energy consumption, and convenient electrode regeneration. EEDI is primarily used for desalination, but its working principle indicates that it can also be used for element enrichment. Currently, a large number of works have used EEDI for Mg2+/Li+ separation and Li+ enrichment. This work aims to review the research progress of EEDI for lithium extraction, focusing on its working mechanism, key materials (electrode materials or membrane materials), achieved performance, and prospects for future development. This work will help promote the development of EEDI technology in the field of Mg2+/Li+ separation.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1577 - 1592"},"PeriodicalIF":2.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821739","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

The effect of microstructure on the doped lanthanum zirconates transport properties 微观结构对掺杂锆酸镧输运性能的影响

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-11-01 DOI: 10.1007/s10008-024-06126-8

V. A. Vorotnikov, A. Yu. Stroeva, O. S. Bervitskaya, S. A. Chikishev, A. M. Duvakin, V. V. Grebenev, D. N. Khmelenin, O. V. Emelyanova, A. V. Kuzmin

{"title":"The effect of microstructure on the doped lanthanum zirconates transport properties","authors":"V. A. Vorotnikov, A. Yu. Stroeva, O. S. Bervitskaya, S. A. Chikishev, A. M. Duvakin, V. V. Grebenev, D. N. Khmelenin, O. V. Emelyanova, A. V. Kuzmin","doi":"10.1007/s10008-024-06126-8","DOIUrl":"10.1007/s10008-024-06126-8","url":null,"abstract":"<div>In this work, materials based on lanthanum zirconates with a pyrochlore structure were prepared by a deposition with ultrasonic spraying. This method combines good variability and scalability. Various approaches to modernize the microstructure of samples and to reduce sintering temperature were applied. For instance, the use of small amounts of sintering additive 0.5 wt.%Co3O4 showed an excellent result. In this case, the optimal combination ratio of density and the lowest possible sintering temperature of ceramics has been achieved. The effect of density changes of 3% and 5% on the La1.95Ca0.05Zr2O7-δ ion transport has been established. The Ca2+ segregation reproduced for all samples has confirmed the predominant disordering at grain boundaries in lanthanum zirconates. The proposed synthesis option ensures the specified distribution of elements, claimed dopant solubility and does not transform the defect formation of La1.95Ca0.05Zr2O7-δ. Hence, the proposed synthesis method can be successfully recommended for the synthesis of ion-conducting rare earth elements zirconates.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1755 - 1764"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821713","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

Simple and disposable device based on gold nanoparticles modified screen-printed carbon electrode for detection of ciprofloxacin 基于金纳米颗粒修饰网印碳电极的简易一次性环丙沙星检测装置

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-28 DOI: 10.1007/s10008-024-06119-7

Daniela Nunes da Silva, Thaís Cristina de Oliveira Cândido, Arnaldo César Pereira

{"title":"Simple and disposable device based on gold nanoparticles modified screen-printed carbon electrode for detection of ciprofloxacin","authors":"Daniela Nunes da Silva, Thaís Cristina de Oliveira Cândido, Arnaldo César Pereira","doi":"10.1007/s10008-024-06119-7","DOIUrl":"10.1007/s10008-024-06119-7","url":null,"abstract":"<div>This study describes the development and characterization of an electrochemical sensor based on gold nanoparticles (AuNPs) immobilized on a screen-printed carbon electrode (SPCE) supported by polyethylene terephthalate (PET) for ciprofloxacin (CPX) detection. The SPCE-AuNPs sensor was fabricated using optimized carbonaceous material-based inks for the working and counter electrodes, while silver/silver chloride ink was employed for the quasi-reference electrode. Electrochemical characterization revealed a significant 223% increase in CPX oxidation current intensity compared to the unmodified SPCE electrode. Electrochemical impedance spectroscopy (EIS) confirmed this improvement, showing a decrease in charge transfer resistance (Rct) from 0.225 kΩ for SPCE to 0.125 kΩ for SPCE-AuNPs. Under optimized conditions utilizing differential pulse voltammetry (DPV), the sensor exhibited a linear range of 0.4 to 88.0 μmol L−1, a limit of detection of 0.12 μmol L−1, and a limit of quantification of 0.4 μmol L−1. The developed method was applied to determine CPX in water and pharmaceutical formulation samples, achieving excellent recovery values ranging from 96 to 104%.<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":"29 3","pages":"901 - 914"},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of CuS and CuS/C-150 for application in battery type electrode and analysis via electrochemical impedance spectroscopy 用于电池电极的cu和cu /C-150的合成及电化学阻抗谱分析

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-25 DOI: 10.1007/s10008-024-06124-w

M. R. Cunha, J. C. M. da Costa, R. R. Passos, L. A. Pocrifka

{"title":"Synthesis of CuS and CuS/C-150 for application in battery type electrode and analysis via electrochemical impedance spectroscopy","authors":"M. R. Cunha, J. C. M. da Costa, R. R. Passos, L. A. Pocrifka","doi":"10.1007/s10008-024-06124-w","DOIUrl":"10.1007/s10008-024-06124-w","url":null,"abstract":"<div>In this work, a simple and efficient hydrothermal synthesis route for CuS and CuS/C-150 is presented, overcoming the limitations of traditional methods by using a single-step synthesis that allows more efficient and scalable process. This method also provides a more detailed study of the mechanisms between the material/electrolyte interface through electrochemical impedance spectroscopy. Scanning electron microscopy analyses revealed the morphological formation of microspheres and microsheets under the synthesis conditions. The method and synthesis conditions led to the formation of CuS in the covellite form (JCPDS nº 06–0646), which was confirmed via X-ray diffraction. A decrease in the intensity of the peaks in the CuS/C-150 diffractogram was observed, characteristic of amorphous material. Cyclic voltammetry revealed redox peaks characteristic of CuS and CuS/C-150 materials, and the specific capacity values of CuS and CuS/C-150 were measured by galvanostatic charge–discharge, yielding 168.8 and 121.9 C.g−1, respectively. These values indicate that these materials are good charge storage. For cyclic stability (5 mA.cm−2), CuS/C-150 retained 74.1% after 200 cycles. Electrochemical impedance spectroscopy analysis indicated that the resistances were negligible for both solution and charge transfer. Through complex calculations via impedance spectroscopy, the materials obtained relaxation time constants (τ0) of approximately 2.30 s, and at the intercept of the |Q/S| =|P/S|, 70% curves were obtained. Therefore, the electrochemical results were satisfactory and confirmed that the materials are promising battery-type electrodes and that the hydrothermal route is viable and effective for obtaining the studied materials.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 3","pages":"915 - 922"},"PeriodicalIF":2.6,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430946","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

Assessment of mechanical traits and corrosion resistance in ZrC nanoceramic–strengthened Ni-W-P nanocomposite coatings ZrC纳米陶瓷增强Ni-W-P纳米复合涂层力学性能及耐蚀性能评价

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-24 DOI: 10.1007/s10008-024-06077-0

Yi Sun, Shijun Xu, Jiamin Zhong, Yi He, Shihong Zhang, Han Liu, Qing Yuan, Xiangshan Hou, Quangang Chen, Zhiyuan Li

{"title":"Assessment of mechanical traits and corrosion resistance in ZrC nanoceramic–strengthened Ni-W-P nanocomposite coatings","authors":"Yi Sun, Shijun Xu, Jiamin Zhong, Yi He, Shihong Zhang, Han Liu, Qing Yuan, Xiangshan Hou, Quangang Chen, Zhiyuan Li","doi":"10.1007/s10008-024-06077-0","DOIUrl":"10.1007/s10008-024-06077-0","url":null,"abstract":"<div>The electroless plating method was used in this work to successfully create a Ni-W-P/ZrC composite coating on an N80 carbon steel substrate. How the ceramic nanomaterial ZrC affected the coating’s mechanical property, surface morphology, and corrosion resistance has also been investigated in this work. The outcomes demonstrated that the addition of ZrC material can greatly enhance the performance of the coating in a severe environment. The coating’s surface flaws improve, its surface gets denser and more complete, and its grain size gets much more refined as the concentration of ZrC increases. This is particularly evident when the ZrC concentration is 4 g/L. Because of ZrC’s dispersion strengthening and grain refinement effects, the composite coating with 4 g/L of ZrC has an average friction coefficient of 0.524 in the friction test which is lower than the Ni-W-P alloy coating. It also has a narrower wear section and a significantly smaller wear volume (0.0011 mm3). Furthermore, ZrC significantly increases the composite coatings’ resistance to corrosion. The corrosion current density of the composite coating is 5.27 µA/cm2, the corrosion potential is − 0.282 V, and the impedance is 8.21 × 104 Ω⋅cm2 when the concentration of ZrC is 4 g/L.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1701 - 1715"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822051","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

Construction of NiCo2S4 wrapped CeO2/Co3O4 nanorod arrays for excellent performance supercapacitors 高性能超级电容器用NiCo2S4包覆CeO2/Co3O4纳米棒阵列的构建

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-24 DOI: 10.1007/s10008-024-06121-z

Mi Xiao, Xinyu Hui, Songyi Yang, Xinyue Du, Xiaofan Gao, Zhuoyuan Song, Weixi Zhang, Meng Xiao

{"title":"Construction of NiCo2S4 wrapped CeO2/Co3O4 nanorod arrays for excellent performance supercapacitors","authors":"Mi Xiao, Xinyu Hui, Songyi Yang, Xinyue Du, Xiaofan Gao, Zhuoyuan Song, Weixi Zhang, Meng Xiao","doi":"10.1007/s10008-024-06121-z","DOIUrl":"10.1007/s10008-024-06121-z","url":null,"abstract":"<div>Supercapacitor (SC) electrodes with excellent capacity and multiplicity performance have been in demand for a long time. In this paper, CeO2/Co3O4 nanorod arrays were firstly synthesized by hydrothermal method and thermal treatments, and then NiCo2S4 were successfully wrapped around CeO2/Co3O4 nanorod arrays by electrodeposition. On the one hand, the CeO2/Co3O4 nanorod arrays acted as a core layer to provide a scaffold for the continuous and stable conductivity of the electrochemical reaction, while on the other hand, the NiCo2S4 played an important role in increasing the capacity due to their high conductivity. The electrochemical properties of NiCo2S4@ CeO2/Co3O4 electrode materials were remarkable improvement due to the synergistic and complementary effect. The area capacitance of the prepared NiCo2S4@ CeO2/Co3O4 nanorod arrays was 1576.67 mF cm−2 with a current density of 1 mA cm−2. And the intrinsic and transfer resistances of the composites were 0.816 Ω and 0.064 Ω. Meanwhile, the asymmetrical supercapacitors exhibited excellent energy density (0.074 mWh cm−2) with the power density of 0.805 mW cm−2. The capacitive retention rate after 5000 cycles was 93.25%. This study demonstrates that the 3D core–shell structure of NiCo2S4@ CeO2/Co3O4 nanorod arrays has a good practical application potential in supercapacitor devices.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1731 - 1741"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822053","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

In situ reduction-sulfurized FeS2 based on iron oxide as electrocatalyst for rechargeable Li-O2 batteries 基于氧化铁的原位还原硫化FeS2作为可充电锂氧电池的电催化剂

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-21 DOI: 10.1007/s10008-024-06115-x

Shengxue Yan, Haitao Ma, Zhanzhan Wang, Shaohua Luo, Jing Guo

{"title":"In situ reduction-sulfurized FeS2 based on iron oxide as electrocatalyst for rechargeable Li-O2 batteries","authors":"Shengxue Yan, Haitao Ma, Zhanzhan Wang, Shaohua Luo, Jing Guo","doi":"10.1007/s10008-024-06115-x","DOIUrl":"10.1007/s10008-024-06115-x","url":null,"abstract":"<div>Significant advancements have been made in the development of lithium-oxygen batteries, achieving impressive results. However, their practical application is hindered by issues such as short cycle life, rapid capacity decay, and low energy conversion efficiency. Selecting suitable electrolytes and cathode catalysts can effectively address these challenges and enhance battery performance. This study investigates the use of Fe2O3 and FeS2 as cathode catalysts for lithium-oxygen batteries. The structural characteristics and surface morphologies of the Fe2O3 and FeS2 samples were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performances of these catalysts were compared, showing that FeS2 has a higher charge/discharge specific capacity (5740 mAh g−1 at a current density of 100 mA g−1) compared to Fe2O3 (2676 Ah g−1 at the same current density). Furthermore, FeS2 exhibited better cycling stability, maintaining 97 cycles at 100 mA g−1 current density with a 500 mAh g−1 specific capacity limit and demonstrating lower electrochemical impedance. Electrocatalytic oxygen reduction tests also revealed that FeS2 exhibits higher oxygen reduction reaction (ORR) catalytic activity than Fe2O3. These results indicate that FeS2 outperforms Fe2O3 as a cathode catalyst in lithium-oxygen batteries.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1665 - 1675"},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822036","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