Journal of Solid State Electrochemistry最新文献

{"title":"Bronze sodium tungsten precipitation synthesis and lithium intercalation","authors":"Tiago A. Martins,&nbsp;Roger Gonçalves,&nbsp;L. Cabral,&nbsp;Thales Rafael Machado,&nbsp;Robert da Silva Paiva,&nbsp;Roman Alvarez Roca,&nbsp;Ernesto Chaves Pereira,&nbsp;Miguel A. San-Miguel,&nbsp;E. Z. da Silva,&nbsp;E. Longo","doi":"10.1007/s10008-024-06110-2","DOIUrl":"10.1007/s10008-024-06110-2","url":null,"abstract":"<div><p>Hexagonal sodium tungsten bronze (h-Na_xWO_3+x/2·yH₂O) nanorods were obtained by simple acid precipitation in 16 min at 97 °C, evidencing the saving of time and energy. The W-OH₂ modes were observed in Raman and Fourier transform infrared (FTIR) spectra to confirm the presence of structural water. The h-Na_xWO_3+x/2·yH₂O was subjected to heat treatment at 300 °C to analyze the effects of heating on the material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance ultraviolet-visible absorption spectra (UV-vis) indicated the occurrence of diffusion on the surface-bulk of Na⁺ ions, and the band gap changed from 2.7 eV to 2.4 eV with heating. Electrochromic devices based on h-Na_xWO_3+x/2·yH₂O were constructed. The sample without heat treatment and with structural water loss presented the electrochromic efficiency of 127.5 cm²/C and 561.8 cm²/C, respectively, evidencing the creation of vacancies for the intercalation of lithium ions from heat treatment. Also, density functional theory calculations were performed to study the lithium diffusion process in the interstitial Na-WO₆ channels of sodium tungsten bronze.</p><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 5","pages":"1639 - 1651"},"PeriodicalIF":2.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822031","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}

{"title":"Synthesis and characterization of porous β-cyclodextrin/manganese ferrite nanoparticles and their application as an electrochemical sensor of dopamine","authors":"Lizz Gabi Luza Mamani,&nbsp;Gabriel Erig Domingos,&nbsp;Sabrina Nicolodi,&nbsp;Eliana Weber de Menezes,&nbsp;Silvio Buchner,&nbsp;Edilson Valmir Benvenutti,&nbsp;Tania Maria Haas Costa,&nbsp;Leliz Ticona Arenas","doi":"10.1007/s10008-024-06105-z","DOIUrl":"10.1007/s10008-024-06105-z","url":null,"abstract":"<div><p>Superparamagnetic manganese ferrite nanoparticles stabilized with β-cyclodextrin (βCD-MFO) were prepared by co-precipitation at room temperature and hydrothermal methods using temperatures of 120 and 140 °C. Similar samples, without βCD, were prepared for comparison (MFO). Samples called βCD-MFO140 and MFO140, heated at 140 °C during the synthesis, showed the best characteristics. The βCD-MFO140 is formed by nanoparticles of 5 nm and it presents the highest surface area, the highest porosity, and a hydrophilic surface. Alternatively, the MFO140 presented a crystallite size near 25 nm and a hydrophobic surface. Both nanocomposites were applied to modify carbon paste electrodes and evaluated using differential pulse voltammetry for the determination of dopamine. They showed promising responses such as sensitivities of 0.09 and 0.23 µA µmol⁻¹ L and low detection limit of 2.28 and 0.39 µmol L⁻¹ for MFO140 and βCD-MFO140, respectively, in a linear range between 11.97 and 39.68 µmol L⁻¹ for MFO140 and between 3.99 and 15.95 µmol L⁻¹ for βCD-MFO140. Both sensors demonstrated good reproducibility with a relative standard deviation of 12.7%. The CPE βCD-MFO140 exhibits better selectivity for dopamine. According to these results, the βCD-MFO140 electrode demonstrated better electrochemical performance with potential for application in real samples, which can be ascribed to its higher surface area and porosity, as well as its hydroxylated surface that makes this electrode more hydrophilic.</p><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":"1623 - 1638"},"PeriodicalIF":2.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822029","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}

{"title":"Preparation and properties and performance study of chopped carbon fiber/polyvinylidene fluoride/expanded graphite composite bipolar plates utilizing surface-coated carbon nanotubes","authors":"Wenkai Li,&nbsp;Haodong Zeng,&nbsp;Zhiyong Xie","doi":"10.1007/s10008-024-06113-z","DOIUrl":"10.1007/s10008-024-06113-z","url":null,"abstract":"<div><p>The bipolar plate is an important part of the proton exchange membrane fuel cell, which has high requirements for mechanical properties and strength. Composite bipolar plates have the advantages of easy processing and corrosion resistance, but there are problems such as difficulty in balancing between mechanical properties and electrical conductivity. In this study, surface-coating modification of chopped carbon fibers was carried out by catalytic chemical vapor deposition, and multi-walled carbon nanotube-coated carbon fiber composites with better interfacial contact properties and improved specific surface area were prepared and added to polyvinylidene fluoride/expanded graphite to synthesize composite bipolar plates. Due to the selective distribution of carbon nanotubes and the synergistic construction of conductive pathways with carbon fibers, the performance of the composite bipolar plate was improved, with a conductivity of 116.01 S/cm, a flexural strength of 50.37 MPa, and both good hydrophobicity and corrosion resistance and a corrosion current density of 0.804 µA cm⁻². The results show that the prepared composite bipolar plates meet the requirements in fuel cell use, and the use of carbon nanotubes coated with carbon fibers to synergistically construct conductive networks has also proven to be a potential performance enhancer for composite bipolar plates.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1611 - 1621"},"PeriodicalIF":2.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822030","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}

{"title":"Electrochemical synthesis of bimetallic Cu-Cd nanoparticles via sequential electrodeposition and co-electrodeposition and involved alloy formation","authors":"N. Zurita,&nbsp;R. E. Ambrusi,&nbsp;M. E. Pronsato,&nbsp;S. G. García","doi":"10.1007/s10008-024-06098-9","DOIUrl":"10.1007/s10008-024-06098-9","url":null,"abstract":"<div><p>It is well known that bimetallic nanoparticles exhibit unique properties that allow their use in a wide range of specific purposes, which depend mainly on the final morphology and composition of the deposits obtained from the preparation method used. In that sense, the electrochemical methods become a promising strategy to generate different types of structures, by selecting appropriately the processing variables. For that reason, a comparative analysis of the synthesis of bimetallic Cu-Cd nanoparticles using sequential electrodeposition and co-electrodeposition was performed. In the first method, metal deposits are prepared sequentially, by potentiostatic pulses applied from different solutions containing the individual metal ions, while the co-deposition method was implemented with both constituents provided from the same solution. Scanning electron microscopy images of the deposits prepared by sequential deposition of Cu, followed by Cd, showed flower-like structures, presenting an appreciable symmetry. The co-deposited crystals also showed a greater number of smaller nanoparticles and achieved a higher coverage percentage. Anodic linear sweep voltammetry analysis of the Cd-Cu nanoparticles/highly oriented pyrolytic graphite systems revealed different peaks associated with the dissolution of Cd and Cu deposits as well as peaks related to different alloyed phases. In the bimetallic system formed by sequential deposition, the Cu₅Cd₈ and Cu₄Cd₃ phases were identified, while in that obtained by co-deposition, the CuCd₃ and Cu₄Cd₃ phases were evidenced, showing a greater tendency towards alloying. These alloyed phases were also confirmed by constant-current stripping experiments. The formation of a Cd-Cu alloy could also be inferred by Density Functional Theory calculations.</p><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 5","pages":"1593 - 1609"},"PeriodicalIF":2.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822028","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}

{"title":"Electrochemical properties of two-dimensional zirconium nitrogen anode materials for K-ion battery by first-principles insights","authors":"Jiangtao Yin,&nbsp;Lingxia Li,&nbsp;Wenbo Zhang,&nbsp;Di Liu,&nbsp;Junqiang Ren,&nbsp;Xin Guo,&nbsp;Xuefeng Lu","doi":"10.1007/s10008-024-06108-w","DOIUrl":"10.1007/s10008-024-06108-w","url":null,"abstract":"<div><p>As a class of two-dimensional transition metal compounds, MXene has become the most potential alternative electrode materials because of its fascinating properties. In this contribution, the electrochemical properties of Zr₂N with O and S groups for K-ion battery are explored. The O and S functional groups have high electronegativity and high affinity with K-ion; the results show that the most stable adsorption site of Zr₂NO₂ and Zr₂NS₂ models is on the bottom Zr atom; with regard to the Zr₂N model, it is located at above the N atom; and the corresponding adsorption energy on the surface of Zr₂NO₂ and Zr₂NS₂ models is far less than that Zr₂N model. The differential charge density map and atomic population indicated obvious electron transfer between the adsorbed atom and monolayer, which proved that there is some chemisorption. With regard to the electrochemical performance, K-ion has low open-circuit voltage and high theoretical specific capacity on Zr₂N, Zr₂NO₂, and Zr₂NS₂ models, and the migration barrier is smaller than that of common two-dimensional materials. A series of results suggest that Zr₂N, Zr₂NO₂, and Zr₂NS₂ can be applied as potential anode materials for K-ion batteries.</p><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 2","pages":"769 - 781"},"PeriodicalIF":2.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109194","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}

{"title":"Electrochemical aspects in practicable artificial photosynthesis: the best way to store electricity derived from sunlight at every home and at every thermal power plant","authors":"Ibram Ganesh","doi":"10.1007/s10008-024-06112-0","DOIUrl":"10.1007/s10008-024-06112-0","url":null,"abstract":"","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"385 - 387"},"PeriodicalIF":2.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109195","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}

{"title":"Optimization of electrode thickness of lithium-ion batteries for maximizing energy density","authors":"F. M. Nizam Uddin Khan,&nbsp;Mohammad G. Rasul,&nbsp;Nirmal K. Mandal,&nbsp;A. S. M. Sayem","doi":"10.1007/s10008-024-06109-9","DOIUrl":"10.1007/s10008-024-06109-9","url":null,"abstract":"<div><p>The demand for high capacity and high energy density lithium-ion batteries (LIBs) has drastically increased nowadays. One way of meeting that rising demand is to design LIBs with thicker electrodes. Increasing electrode thickness can enhance the energy density of LIBs at the cell level by reducing the ratio of inactive materials in the cell. However, after a certain value of electrode thickness, the rate of energy density increase becomes slower. On the other hand, the impact of associated limitations becomes stronger, reducing the practical applicability of LIBs with thicker electrodes. Hence, an optimum value of thickness is of utmost importance for the practicability of thicker electrode design. In this paper, both the cathode thickness and the anode thickness of an NCM LIB cell were optimized by applying response surface methodology (RSM) with a Box-Behnken design (BBD) to maximize the energy density. Moreover, the influence of electrode porosity, together with the interaction of porosity with cathode and anode thickness, was incorporated into the optimization. A full factorial design of 3-level, 3-factor was used to generate 15 simulation conditions in accordance with the design of experiment (DoE) achieved through BBD. Then, those conditions were used to achieve 15 responses by simulating a reduced-order electrochemical model. Finally, the statistical technique analysis of variance (ANOVA) was used to analyze and validate the results of RSM. The results show that the RSM-BBD optimization method, coupled with ANOVA, has successfully optimized the thicknesses of both positive and negative electrodes for maximum energy density, despite the nonlinearity of the electrochemical system. The findings suggest an optimized cathode thickness of 401.56 µm and anode thickness of 186.36 µm for a maximum energy density of 292.22 of an NCM LIB cell, while electrode porosity is preferred to be 0.2.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"753 - 768"},"PeriodicalIF":2.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-024-06109-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109124","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}

{"title":"Corrosion inhibition effect of sodium silicate/triethanolamine complex inhibitor on AZ91D magnesium alloy in 50% ethylene glycol coolant","authors":"Jintai Pan,&nbsp;Junchao Huang,&nbsp;Fuli Deng,&nbsp;Dong Liu","doi":"10.1007/s10008-024-06104-0","DOIUrl":"10.1007/s10008-024-06104-0","url":null,"abstract":"<div><p>Ethylene glycol solutions can cause severe corrosion in magnesium alloys, leading to safety and stability concerns. The addition of corrosion inhibitors to the environment is a simple and effective protective measure. This study introduces a compound corrosion inhibitor that combines inorganic and organic components, providing resistance to salts, high temperatures, and environmental factors. The corrosion inhibition of AZ91D magnesium alloy using a sodium silicate/triethanolamine compound inhibitor in 50% glycol coolant was investigated through electrochemical analysis, morphology characterization, and weight loss analysis. The results demonstrated that the sodium silicate/triethanolamine inhibitor effectively prevented corrosion of AZ91D magnesium alloy in 50% ethylene glycol, achieving a maximum inhibition efficiency of 96.4% with 2 g/L sodium silicate and 3 mL/L triethanolamine. The inhibitor exhibited continued effectiveness at elevated temperatures and showed minimal impact from external ions, providing strong protection for AZ91D magnesium alloy in glycol coolant. The outstanding performance can be attributed to the synergistic interaction of triethanolamine and sodium silicate, which form a protective film on the alloy’s surface. This compound inhibitor exhibits promising potential for safeguarding AZ91D magnesium alloy in similar environments. Furthermore, the proposed mechanism elucidates how the sodium silicate/triethanolamine mixture mitigates galvanic corrosion in the AZ91D magnesium alloy.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"743 - 752"},"PeriodicalIF":2.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109123","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}

{"title":"A comprehensive analysis of supercapacitors with current limitations and emerging trends in research","authors":"Maitri Libber,&nbsp;Narendra Gariya,&nbsp;Manoj Kumar","doi":"10.1007/s10008-024-06107-x","DOIUrl":"10.1007/s10008-024-06107-x","url":null,"abstract":"<div><p>Supercapacitor technology has been continuously advancing to improve material performance and energy density by utilizing new technologies like hybrid materials and electrodes with nanostructures. Along with fundamental principles, this article covers various types of supercapacitors, such as hybrid, electric double-layer, and pseudocapacitors. Further, comprehensive electrochemical characterization methods, including galvanostatic charge–discharge, electrochemical impedance spectroscopy, cyclic voltammetry, and other techniques (structural characterization, which includes methods such as scanning electron microscopy (SEM) and transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller (BET) analysis), provide information on the behavior and performance of supercapacitors. Additionally, supercapacitors are being studied for their key applications, which include industrial uses, renewable energy systems, electric vehicles, and portable electronics. Along with discussing existing limitations—such as comparatively lower energy density in comparison to batteries—the article also highlights emerging trends that could help address these limitations in the future, like the development of innovative materials and inventive electrode designs. Finally, the discussion concludes with suggestions for future research focused on enhancing supercapacitor performance and broadening their range of applications, which highlights their contribution to the development of an ecosystem for energy storage that is more effective and sustainable.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"513 - 527"},"PeriodicalIF":2.6,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108612","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}

{"title":"An investigation on g-C3N4/ZnS/SnO2 ternary nanocomposites for electrochemical alkaline water splitting and photocatalytic methylene blue decomposition reactions","authors":"S. Ashok,&nbsp;N. Kumaresan,&nbsp;Hanson Clinton D Souza,&nbsp;Tatianne Ferreira de Oliveira,&nbsp;V. Ganesh","doi":"10.1007/s10008-024-06099-8","DOIUrl":"10.1007/s10008-024-06099-8","url":null,"abstract":"<div><p>In this study, we report the development of a cost-effective and highly efficient bi-functional g-C₃N₄/ZnS/SnO₂ ternary nanocomposite for electrochemical hydrogen evolution reaction (HER) and photocatalytic applications under sunlight irradiation. The nanocomposites were synthesized using a facile hydrothermal method, combining semiconducting ZnS and SnO₂ nanomaterials with g-C₃N₄ nanosheets. Comprehensive characterization techniques were employed to analyze the structural, morphological, electrochemical, and photocatalytic properties of the synthesized nanocomposite. X-ray diffraction (XRD) analysis demonstrates that the g-C₃N₄, g-C₃N₄/ZnS, and g-C₃N₄/ZnS/SnO₂ nanostructures exhibit excellent crystallinity, as evidenced by the sharp and well-defined peaks in the XRD patterns. Field emission scanning electron microscopy (FESEM) reveals the deposition of spherical ZnS nanoparticles and agglomerated SnO₂ nanoparticles on g-C₃N₄ nanosheets, forming a ternary nanocomposite structure. The g-C₃N₄/ZnS/SnO₂ ternary nanocomposite exhibits a high Brunauer–Emmett–Teller (BET) surface area of 118.123 m² g⁻¹ and an optical band gap of 2.88 eV. Electrochemical measurements show that the nanocomposite has enhanced catalytic activity for the HER, with a low Tafel slope of 92 mV dec⁻¹ and an overpotential of − 0.372 V vs. RHE at 10 mA cm⁻². Furthermore, the g-C₃N₄/ZnS/SnO₂ ternary nanocomposite demonstrates excellent photocatalytic performance, exhibiting high degradation efficiency against methylene blue (MB) dye under sunlight exposure. The synergistic effects of the ternary nanocomposite structure, high surface area, and suitable optical properties contribute to the enhanced photocatalytic and electrocatalytic activities. The developed g-C₃N₄/ZnS/SnO₂ ternary nanocomposite shows great potential as a cost-effective and highly efficient bi-functional material for sustainable energy applications of hydrogen evaluation and environmental remediation.\u0000</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"389 - 400"},"PeriodicalIF":2.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108524","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}