Electrochimica Acta最新文献

{"title":"A Novel Fluorine-Free Lithium Salt Derived from Malononitrile for Electrolyte Applications in Liquid and Solid-State Batteries","authors":"Chloé Farina, Laurent Bernard, Matthieu Landa, Nicolas Leconte, Lionel Picard","doi":"10.1016/j.electacta.2025.146183","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146183","url":null,"abstract":"The transition to clean energy heavily relies on lithium-ion batteries, known for their high energy density and long lifespan. However, the use of fluorinated salts such as LiPF₆ and LiTFSI in commercial cells raises environmental concerns, leading to increased efforts to develop fluorine-free alternatives. In this study, we present the synthesis of lithium (1-naphthalenesulfonyl)-dicyanomethide (LiNPDM), a novel fluorine-free salt containing a dicyanomethide moiety and a naphthalene group, obtained in three steps from naphthalene sulfonate. For comparison, its trifluoromethanesulfonimide analogue (LiNPTFSI) was also prepared. The electrochemical performance of both salts were studied in conventional liquid electrolyte solvents (EC:DMC) and polycarbonate-based solid polymer electrolytes (SPEs). Although LiNPDM shows a narrower electrochemical stability window, attributed to cyano group oxidation at 4.0 V vs Li⁺/Li, its conductivity performance matched those of its fluorinated analogue LiNPTFSI, both in conventional liquid electrolytes (3.5 mS∙cm^‑1) and SPEs (∼ 1 × 10^‑6 S∙cm^‑1 at 80°C). These results suggest that the dicyanomethide functional group is a promising fluorine-free alternative to the conventional trifluoromethylsulfonimide group.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"32 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Steering the activity and selectivity of liquid fuels electro-oxidation via molecule in-situ modification of Pt","authors":"Xiaomei Ning, Yifan Wei, Zhiqiang Tang, Silin He, Xiaoting Chen, Kaitong Yan, Liang Zhan","doi":"10.1016/j.electacta.2025.146185","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146185","url":null,"abstract":"The catalytic efficiency of the formic acid electro-oxidation reaction (FAOR) and glycerol electro-oxidation reaction (GOR) using a Pt catalyst was substantially enhanced by adding 7,7,8,8-tetracyanoquinodimethane (TCNQ) dissolved in acetonitrile solution (ACN) into the reaction solution. The dynamic structure of TCNQ(ACN) and blank ACN modified Pt catalysts, along with their impacts on the performances in FAOR and GOR were analyzed. A strong relationship was established between the performance of FAOR and GOR and the modifier concentration in the reaction solution. ACN exerted a geometric blocking effect on Pt, thereby considerably improving the direct dehydrogenation process of FAOR. Based on ACN, the performance of the dehydrogenation process of FAOR and GOR was further boosted for the surface electron-rich Pt catalyst due to modification with additional TCNQ modifier. Additionally, the resistance to CO poisoning of modified Pt catalyst was notably improved, and the onset potential decreased from 0.656 V of the unmodified Pt to 0.583 V for a specific amount of TCNQ(ACN) modified Pt catalyst. This study offers a novel perspective to optimize the catalytic performance of the catalyst.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"23 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transparent polyaniline/MXene thin films supercapacitors","authors":"Ariane Schmidt, Samantha Husmann, Volker Presser, Aldo J.G. Zarbin","doi":"10.1016/j.electacta.2025.146184","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146184","url":null,"abstract":"We report the successful synthesis of nanocomposites between the MXene Ti₃C₂T_x and polyaniline (PAni), achieved <em>via</em> an innovative approach starting from the intercalation of anilinium ions into non-exfoliated Ti₃C₂T_x, and followed by a liquid/liquid interfacial polymerization. This approach produces transparent films with beneficial optical quality. The spectroscopic analysis confirmed the formation of PAni in its conductive form, emeraldine salt. The absence of TiO₂ bands in the Raman spectra indicated that the organic polymer protected Ti₃C₂T_x from degradation, even in acidic media. Electrochemical characterization revealed that the nanocomposites exhibited promising performance as supercapacitors, with specific capacity dependent on the amount of polymer. The combination of the conductive Ti₃C₂T_x and the redox activity of PAni, as well as the specific nanoarchitecture in which the materials are organized, significantly improved the electrochemical response, facilitating ion diffusion. These transparent films demonstrated specific capacity values up to 89 mAh g^-1 at 0.1 mAh g^-1, with the potential for further enhancement through current collector optimization, positioning them as strong candidates for miniaturized energy storage applications and transparent devices.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"67 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gas Evolution Markers of Dynamic Solid Electrolyte Interphase Formation on Calcium in a Borohydride-Based Electrolyte","authors":"Aaron M. Melemed, Dhyllan A. Skiba, Kyle S. Jiang, Gi Hyun Byun, Betar M. Gallant","doi":"10.1016/j.electacta.2025.146170","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146170","url":null,"abstract":"Although calcium (Ca)-based batteries are of growing interest for sustainable energy storage, a limited number of electrolytes enable reversible plating/stripping of Ca metal, making understanding the behavior of successful electrolytes paramount. Ca(BH₄)₂ in tetrahydrofuran (THF) is one of the more widely-tested electrolytes and a current benchmark given its highest-to-date Coulombic efficiency (CE) of Ca plating/stripping. Yet, there is limited understanding of the reactions forming the solid electrolyte interphase (SEI) and the resulting degree of SEI stability, which impedes understanding into this electrolyte's function. To begin to address these knowledge gaps, this study employs gas chromatography (GC) analysis to track gas evolution markers of SEI formation in Ca(BH₄)₂/THF across a range of cell conditions and timescales. In general, both H₂ and linear hydrocarbon (RH) gases are detected as the major evolved gas species, with the former predominantly evolving from reaction between Ca(BH₄)₂ and residual water, and RH products evolving from reaction between Ca and THF. RH evolution is found to be dynamic for cells at rest, with distinct timescales attributed to initial and extended SEI formation and spanning several days. When cells are polarized during Ca plating, RH evolution arrests after a certain plated capacity is reached, signaling the formation of a protective yet functional SEI that continues to be permissive to Ca plating to higher capacities. Yet, this SEI is metastable, as further chemical changes are observed when polarization is relaxed. Given the significant role of water in contributing to H₂ evolution, we further systematically investigate the impact of water on SEI formation dynamics and composition. Increased water content is observed to mainly shorten SEI formation timescales, but its impact diminishes over extended cycling, and the SEI composition ultimately remains largely independent of initial water content. Despite the ability of the Ca plating electrochemistry to tolerate a degree of water in cells, the associated H₂ evolution presents challenges to any practical implementation of this electrolyte.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"22 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenazinyl polymer@rGO composite cathode materials with fast charging and wide temperature adaptability for sodium dual-ion batteries","authors":"Xuan Wang, Yifan Liu, Jianlin Li, Yuehong Xie, Dong Li, Danyang He, Panfeng Wang, Lilong Xiong","doi":"10.1016/j.electacta.2025.146161","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146161","url":null,"abstract":"Sodium dual-ion batteries (SDIBs) have garnered significant interest owing to the abundant and low-cost of sodium resources. Flexible organic materials are considered promising SDIBs cathodes due to their tunable structures and multi-electron redox properties. However, poor solubility, low conductivity, and particle agglomeration limit their practicality. Herein, a composite poly(5, 10-diphenylphenazine)@rGO (PDPPZ@rGO) was designed for the cathode of SDIBs. The rGO matrix enhances PDPPZ's dispersibility and active surface area while providing high conductivity and mechanical stability, resulting in superior electrochemical performance. Consequently, the PDPPZ@rGO electrode demonstrates a remarkable discharge capacity of 175.8 mAh g^-1, excellent rate performance (128.9 mAh g^-1 at 40 C), and outstanding cyclic stability (capacity retention of 85.1% after 5000 cycles at 10 C). Furthermore, PDPPZ@rGO has excellent wide temperature adaptability, outputting a specific capacity of 157.7 mAh g^-1 at high temperatures of 60 °C and 145.2 mAh g^-1 at low temperatures of -20 °C. This research demonstrates the potential of organic cathode materials for rapid charge/discharge capabilities and wide temperature adaptability in SDIBs.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"22 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Lithium Doping on the Electrochemical Properties of Bi2 Sr2 Co2 Oy Misfit-Layered Oxides for Supercapacitor Applications","authors":"Umar Latif, Muhammad Faheem Maqsood, Syed Muhammad Zain Mehdi, Faisal Ghafoor, Umair Azhar, Syed Hasnain Abbas, Muhammad Farooq Khan","doi":"10.1016/j.electacta.2025.146171","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146171","url":null,"abstract":"The effect of lithium (Li) doping on Bi₂Sr₂Co₂O_y misfit layer oxides for supercapacitor applications is reported for the first time in this research paper. Four different compositions, which included Bi₂Li_0.1Sr_1.9Co₂O_y, Bi₂Li_0.1Sr₂Co₁.₉O_y, Bi₂Li_0.2Sr_1.8Co₂O_y, and Bi₂Li_0.2Sr₂Co_1.8O_y, were synthesized using a solution combustion method. The obtained powders were further calcined at 900 °C for 10 hours and subsequently characterized using field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) analysis and Raman spectroscopy to study the morphology, crystal structure, surface area, elemental identification, quantification, and bonding nature of Li-doped Bi₂Sr₂Co₂O_y. Cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) were performed for electrochemical characterization to study the effect of Li doping on the charge storage performance of Bi₂Sr₂Co₂O_y. Li doping enhanced the charge storage ability of Bi₂Sr₂Co₂O_y by 3 to 5 fold, and all compositions demonstrated a diffusion-based charge storage mechanism. The Bi₂Li_0.1Sr₂Co₁.₉O_y solid-state asymmetric device attained the highest specific capacity of 299.6 C/g at 5 mV/s and 241.5 C/g at 1 A/g with 53.7 Wh/kg energy density.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"183 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical synthesis and photochromic properties of eight-member cyclic azobenzenes","authors":"Xinyuan Sun, Dan Li, Qianqian Niu, Yan Liu, Dandan Zhang, Longjiu Cheng, Baokang Jin","doi":"10.1016/j.electacta.2025.146172","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146172","url":null,"abstract":"Cyclic azobenzenes are capable of undergoing reversible cis-trans isomerization upon visible light irradiation, making them promising candidates as molecular photoswitches for applications in biological systems. However, their synthesis remains challenging due to their unique structural features. In this study, two eight-membered cyclic azobenzenes, namely 12H-dibenzo[b,f][1,4,5]thiadiazocine (<strong>13</strong>) and 12H-dibenzo[b,f][1,4,5] oxadiazocine (<strong>14</strong>), were synthesized through electrochemical reduction of 2’-nitrobenzyl-2-nitrophenyl-sulfide (<strong>1</strong>) and 1-nitro-2-((2’-nitrobenzyl)oxy)benzene (<strong>2</strong>), respectively, in the presence of CO₂. The synthesis yielded high conversion rates (<strong>13</strong>: 85.98%, <strong>14</strong>: 93.76%). Using in situ infrared spectroscopy, NMR, and MS, detailed reduction mechanisms were elucidated, revealing an irreversible 8-electron transfer process and CO₂ involvement in a four-step reaction pathway. UV-Vis spectroscopic analysis showed that both <strong>13</strong> and <strong>14</strong> undergo trans-to-cis isomerization upon exposure to yellow (520 nm) or red (630 nm) light, in agreement with theoretical calculations. Additionally, S0→S1 excitations of both cis and trans isomers are predominantly governed by n→π* transitions. It is found that the cis conformation of compounds <strong>13</strong> and <strong>14</strong> is more stable than the trans conformation. Under yellow or red light irradiation, they undergo rapid trans-to-cis isomerization. No photochemical fatigue was observed in the cyclic experiments at room temperature, indicating their excellent photostability and potential application in photopharmacology. This work offers a sustainable strategy for the synthesis of cyclic azobenzenes and CO₂ capture.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"32 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Improved Battery-Supercapacitor-Hybrid by Electrochemically Deposition of Anthraquinone-2-sulfonate/NiMn-Layered Double Hydroxide on a 3D Exfoliated Graphite","authors":"Atanu Roy, Netanel Shpigel, Qingli Hao, Daniel Mandler","doi":"10.1016/j.electacta.2025.146168","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146168","url":null,"abstract":"Improving both the specific energy and power of a battery supercapacitor hybrid system was achieved by incorporating the redox-active anthraquinone-2-sulfonate (AQS) into NiMn-layered double hydroxide (NM-LDH) deposited on an exfoliated graphite current collector. Both processes, <em>i.e.</em>, deposition of NM-LDH on a foam-like exfoliated graphite current collector and the doping of AQS were carried out electrochemically. Each of the components in this tertiary system plays an important role. The exfoliated graphite provides high conductivity and adds to energy storage through double-layer capacitance. The NM-LDH is the major faradaic component, whereas the AQS adds also to the faradaic energy storage as well as separates the NM-LDH 2D layers and increases the working potential window. The performance of the electrode was carefully characterized and optimized by adjusting the ratio between Ni and Mn in the LDH. The penetration of LDH and AQS was characterized using cross-section electron microscopy. The hybrid electrode exhibits a specific capacity of 612 mAh g⁻¹ at 2 mV s⁻¹ in 5 M KOH. Finally, a symmetric battery supercapacitor hybrid system was assembled using these electrodes and the device exhibited a specific capacity of 180 mAh g⁻¹. This device offers both high specific energy (77.8 Wh kg⁻¹) and power (34.9 kW kg⁻¹).","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"33 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stabilizing Lithium Metal Batteries via Rapid EBID-Synthesized Lithiophilic Zinc Interfaces Regulating Lithium Deposition Behavior","authors":"Yu Tang, Shipeng Zhang, Xiaorong Lv, Li Gao, Peng Zhang, Binxin Liu","doi":"10.1016/j.electacta.2025.146166","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146166","url":null,"abstract":"The uncontrolled growth of lithium dendrites has long been a major challenge hindering the commercial viability of lithium metal batteries.This issue is particularly prominent when using copper foil as the nucleation and deposition substrate due to its lithiophobicity and surface inhomogeneity, which accelerate dendrite growth. To regulate the lithium nucleation/deposition behavior and improve the surface properties of the andoe current collector, we utilized an Electron beam-induced deposition (EBID) system to rapidly synthesize a 200 nm thick lithiophilic zinc functional layer on the copper foil surface. The results showed that the rapid deposition effect based on EBID technology endows the zinc functionalized copper foil with an extremely low lithium nucleation overpotential (≈0 V) and abundant lithium nucleation site (C_dl=239.23 uF cm^-2). At the same time, the zinc layer has close to 100% mechanical bonding to the substrate. Compared to commercial copper foil, the current collector with a zinc-modified layer exhibits more uniform and controllable lithium deposition morphologies under various cycling numbers and lithium deposition capacities. Specifically, at a current density of 0.5 mA cm^-2, the half-cell assembled with this current collector maintains a Coulombic efficiency of up to 95% after 200 cycles, and the symmetric cell can stably cycle for over 3100 hours. This simple and efficient current collector design concept is instrumental in advancing the practical application of lithium metal batteries.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"30 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-step electrochemical fabrication of nanoporous gold film with reduced graphene oxide for carbendazim quantification in river water","authors":"Gilberto J. Silva Junior, Luiz F. Zavatti Felipe, Aline L. Muguet Pinto, Diele A. Gouveia Araújo, Thiago R.L.C. Paixão, Matias Regiart, Mauro Bertotti","doi":"10.1016/j.electacta.2025.146162","DOIUrl":"https://doi.org/10.1016/j.electacta.2025.146162","url":null,"abstract":"Carbendazim (CBZ) is a broad-spectrum fungicide used worldwide to control fungal infestations in various crops. However, its remarkable stability has raised concerns about accumulation in soils and aquatic environments, garnering significant attention from the analytical community. In this report, we propose a nanoporous gold electrode with reduced graphene oxide (NPGrGO) prepared according to a mold-assisted electrodeposition method, in which the gold film was deposited simultaneously with the reduction of graphene oxide on a gold microfiber surface for CBZ determination. The NPGrGO electrode exhibited a high density of edges with graphene sheets confined within the pores in the presence of gold nanoparticles. This unique configuration significantly enhances the electrochemical surface area and the roughness factor, directly influencing electrochemical measurements. Differential pulse voltammetry results show a linear behavior in the CBZ concentration range of 1 – 200 µmol L^-1 with a limit of detection of 0.3 µmol L^-1 and a limit of quantification of 1.0 µmol L^-1. Besides, the NPGrGO sensor also revealed excellent reproducibility (4.2%), repeatability (3.7%), and selectivity toward CBZ detection in the presence of other interfering molecules or ions. Finally, as proof of concept, the NPGrGO was used to determine CBZ in river water samples. Therefore, we have demonstrated a simple and rapid method for fabricating an NPGrGO electrochemical sensor, highlighting its significant potential for applications in environmental analysis.","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"32 1","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}