Journal of Electroanalytical Chemistry最新文献

{"title":"Core-shell structure and high rate performance of Ce-doped Li4Ti5O12 for lithium-ion battery anode materials","authors":"Long Shen ,&nbsp;Zuming He ,&nbsp;Kai Lin ,&nbsp;Jiangbin Su ,&nbsp;Jun Yi ,&nbsp;Longlong Chen ,&nbsp;Yongmei Xia","doi":"10.1016/j.jelechem.2024.118725","DOIUrl":"10.1016/j.jelechem.2024.118725","url":null,"abstract":"<div><div>Lithium titanate (LTO) can be a very promising anode material for lithium-ion batteries (LSBs) due to its inherent ability to inhibit the growth of lithium dendrites as well as its unique “zero-strain” properties. Unfortunately, the low electronic conductivity of LTO leads to serious shortcomings in higher electrochemical demands. In this work, the Ce³⁺-doped C@Li₄Ti₅-<em>_x</em>Ce<em>_x</em>O₁₂ (<em>x</em> = 0, 0.1, 0.15 and 0.2) anode materials synthesized by the hydrothermal method using carbon spheres as templates showed more significant improvement in both structural and electrochemical properties. The results demonstrate that electronic conductivity, lithium-ion diffusion rate, discharge specific capacity, discharge rate capability, and significant improvement stability of C@Li₄Ti₅-<em>_x</em>Ce<em>_x</em>O₁₂ (<em>x</em> = 0.1, 0.15 and 0.2) electrodes<em>.</em> Among them, C@Li₄Ti_4.85Ce_0.15O₁₂ electrode exhibits the highest initial discharge specific capacity (250.86 mAh/g) at 0.1C, which is 1.28-fold that of C@ Li₄Ti₅O₁₂ (195.94 mAh/g), and initial discharge capacity from 205.96 mAh/g to 170.39 mAh/g after 500 cycles, corresponding to 82.7 % of the initial stable discharge capacity. The outstanding performance of C@Li₄Ti_4.85Ce_0.15O₁₂ can be attributed to the lower interfacial impedance, higher electronic conductivity, high oxygen vacancy concentration, and moderate amount of Ce³⁺ doping can enhance the electrochemical activity. In addition, carbon sphere surface defects shown to be effective in improving lithium-ion storage. This work demonstrates that Ce³⁺ doping is an effective method to improve the electrochemical performance of LTOs and provides a more effective guide for designing and optimizing anode electrode materials for lithium-ion batteries.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118725"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ag@Au core–shell nanoparticles modified glassy carbon electrode synthesized by simple displacement reaction for non-enzymatic electrochemical glucose sensing","authors":"Huiling Huang ,&nbsp;Tianyu Chen ,&nbsp;Xinyu Qin ,&nbsp;Bo Quan ,&nbsp;Sun Ha Paek ,&nbsp;Wang Zhang ,&nbsp;Yuanzhe Piao","doi":"10.1016/j.jelechem.2024.118726","DOIUrl":"10.1016/j.jelechem.2024.118726","url":null,"abstract":"<div><div>In this study, a new strategy was presented to enhance glucose sensor performance by modifying a glassy carbon electrode (GCE) with Ag@Au alloy nanoparticles. The synthesis process was designed with a simple replacement reaction to grow the gold layer onto the silver nanparticles to form a core–shell nanostructure. The resulting nanocomposite modified electrode exhibited superior electrocatalytic activity and stability in glucose sensing. Electrochemical measurements were undertaken to assess the performance of the as-synthesized Ag@Au/GCE. The Ag@Au core–shell nanoparticles modified GCE exhibited outstanding catalytic activity towards glucose detection, resulting in a high current response and a robust linear relationship between concentrations (10 μM–10 mM); the detection limit was remarkably low, at 0.04 μM. This sensor demonstrated a wide linear range, low detection limit, and high levels of selectivity and stability, rendering it suitable for accurate glucose quantification in biological samples.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118726"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhibition of microbiologically influenced corrosion of Al alloy 5083 in the presence of Pseudomonas aeruginosa by Artemisia annua L","authors":"Gloria Zlatić ,&nbsp;Ivana Martinović ,&nbsp;Zora Pilić ,&nbsp;Janez Kovač ,&nbsp;Stipe Čelan","doi":"10.1016/j.jelechem.2024.118727","DOIUrl":"10.1016/j.jelechem.2024.118727","url":null,"abstract":"<div><div>Microbiologically influenced corrosion (MIC<span><span>¹</span></span>) of Al 5083 caused by <em>P. aeruginosa</em> was inhibited by <em>A. annua</em> aqueous extract (AAE<span><span>²</span></span>). Electrochemical measurements revealed that the adsorption of AAE on the electrode surface protected Al 5083 from MIC in a simulated marine environment with inhibition efficiency of 78 %. The adsorption layer was formed due to ionized chlorogenic acid interacting with charged Al 5083 surface, preventing bacterial adhesion and growth. Adding AAE promoted the formation of a protective Al₂O₃, and decreased the surface layer porosity. The pitting corrosion reduced considerably when AAE was added to biotic seawater, supporting the ICP-OES results.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118727"},"PeriodicalIF":4.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degradation mechanisms, long-term durability challenges, and mitigation methods for proton exchange membranes and membrane electrode assemblies with Pt/C electrocatalysts in low-temperature and high-temperature fuel cells: A comprehensive review","authors":"Md Shahjahan Kabir Chowdury ,&nbsp;YeJi Park ,&nbsp;Sung Bum Park ,&nbsp;Yong-il Park","doi":"10.1016/j.jelechem.2024.118712","DOIUrl":"10.1016/j.jelechem.2024.118712","url":null,"abstract":"<div><div>Complying with durability regulations is crucial for the successful commercialization of proton exchange membrane fuel cells (PEMFCs). This study evaluates the literature on complex and multi-faceted degradation processes, durability, lifetime concerns, recent advancements, and mitigation measures for proton exchange membranes (PEMs) and membrane electrode assemblies (MEAs). Extensive research has explored the degradation mechanisms of low-temperature perfluorinated ionomers, such as Nafion®, alongside non-fluorinated PEMs, including hydrocarbon-based polymers and organic–inorganic nanocomposites. Additionally, high-temperature PEMs based on phosphoric acid-doped polybenzimidazole (PA-PBI) have also been reported. In MEAs, the Pt/C electrocatalyst, catalyst layer (CL), and gas diffusion layer (GDL) play crucial roles, with degradation occurring through Pt nanoparticles dissolution, electrochemical Ostwald ripening, Pt particles growth/precipitation on the membrane, carbon support corrosion, mass transfer difficulties for ionomer redistribution and reduced porosity, and membrane deterioration. For long-term durability in fuel cell operation, various influential factors are investigated such as accelerated stress tests (ASTs) for open-circuit voltage, dynamic load, humidity cycling, high temperature, freeze–thaw effects, Pt degradation, GDL, startup-shutdown state, different fuels, along with measurements of membrane properties and cell performance. Accelerated stress test protocols for transportation accurately depict long-term failure modes, targeting specific degradation paths or combinations of mechanisms. Mitigation strategies for these issues are also suggested. In addition, this study aims to contribute to advancing durability enhancement and mitigation strategies through a comprehensive analysis of novel material systems optimized for the development of next-generation low-temperature and high-temperature PEMs.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118712"},"PeriodicalIF":4.1,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the electrochemical behaviour of praseodymium ions in a LiF-PrF3-Pr6O11 molten salt system","authors":"Shumei Chen,&nbsp;Peng Xukun,&nbsp;Mingyang Tan,&nbsp;Qiang Li,&nbsp;Chunfa Liao,&nbsp;Xu Wang,&nbsp;Xinyu Wu","doi":"10.1016/j.jelechem.2024.118724","DOIUrl":"10.1016/j.jelechem.2024.118724","url":null,"abstract":"<div><div>Understanding the electrochemical of paseodymium ions in molten salt is essential to improve electrolytic efficiency. To elucidate the electroreduction mechanism of praseodymium ions and overcome the limitations associated with regulating the yield of praseodymium metal in the industrial praseodymium electrolysis process, the electrochemical behaviour of praseodymium on the W working electrode surface in the LiF-PrF₃-Pr₆O₁₁ molten salt system was determined by square–wave voltammetry, chronoamperometry, cyclic voltammetry and potentiometry analyses. The results indicated that the reduction of Pr³⁺ on the W cathode is a one-step quasireversible Pr³⁺/Pr reduction process controlled by diffusion of the LiF-PrF₃ and (LiF-PrF₃)_eut-Pr₆O₁₁ electrolytes at 1223 K Pr³⁺ in the LiF-PrF₃-Pr₆O₁₁ molten salt has a diffusion coefficient of <em>D_Pr3+/Pr</em> = 0.20 × 10⁻⁸–4.11 × 10⁻⁸ cm²·s⁻¹. The incorporation of Pr₆O₁₁ increased the electrochemical activity of Pr³⁺ in the LiF-PrF₃ system. Pr crystallization on the W electrode was achieved by three-dimensional progressive nucleation.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118724"},"PeriodicalIF":4.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reverse iontophoresis sensing electrode for joint detection of pH, NH4+, and lactic acid","authors":"Qiya Gao ,&nbsp;Zetao Chen ,&nbsp;Yongchang Bai ,&nbsp;Jie Fu ,&nbsp;Ziyue Qin ,&nbsp;Shuang Li","doi":"10.1016/j.jelechem.2024.118722","DOIUrl":"10.1016/j.jelechem.2024.118722","url":null,"abstract":"<div><div>With the rapid development of integrated electronic circuit technology, biological fluid-electricity integrated detection systems have gradually become a research hotspot. Researchers have integrated biological fluid electrical detection methods into circuits and developed small, low-power, portable detection devices equipped with sensing electrodes, which can achieve continuous monitoring of human health parameters. In recent years, the integration of reverse iontophoresis technology that can be used to extract body fluids with electrochemical sensors has opened up the possibility of flexible, portable biochemical sensing with excellent detection sensitivity. Herein, we present a method for extracting biofluids based on reverse iontophoresis technology, coupled with electrochemical sensing techniques for the simultaneous detection of various biomarkers in body fluids. The multi-channel sensing electrode was modified layer by layer using nitrogen-doped graphene (<em>N</em>-Gr), ion-selective membrane, or lactate oxidase for rapid and sensitive detection of pH (3–8), ammonium ion (NH₄⁺) (0.1 mM–50 mM), and lactic acid (1 mM–50 mM). Subsequently, an integrated system for electrical stimulation extraction and sensing analysis based on reverse iontophoresis was established and experimentally tested. Experimental results demonstrated that the multi-channel joint detection sensing electrode has excellent sensing linearity, specificity, repeatability, and long-term stability. Finally, a smartphone-based WeChat applet was developed, which can realize parameter setting, function selection, and result display of sensor detection. In this study, reverse iontophoresis technology was used to collect body fluids, and the important biomarkers pH, NH₄⁺, and lactic acid in the body fluids were detected. Overall, this research presents an integrated detection system and a multi-channel sensing scheme for the detection of important biochemical markers in bodily fluids, thereby providing potential value for health monitoring applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118722"},"PeriodicalIF":4.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the enhancement of flexible zinc-air battery performance with polyethylene glycol and nano SiO2 composite hydrogel","authors":"Xinru Qu ,&nbsp;Gaoyuan Liu ,&nbsp;Na Xu ,&nbsp;Lina Zhao ,&nbsp;Zhanlin Xu","doi":"10.1016/j.jelechem.2024.118721","DOIUrl":"10.1016/j.jelechem.2024.118721","url":null,"abstract":"<div><div>Flexible zinc-air batteries have garnered significant attention due to their high energy density, low cost, and environmental friendliness. However, issues such as poor cycle life and anode dendrite growth severely hinder their practical application. This study introduces polyethylene glycol (PEG) as a pore-forming agent and incorporates nano SiO₂ into a polyacrylamide/carboxymethyl cellulose (PAM/CMC) composite hydrogel, resulting in a PAM/CMC/PEG/SiO₂ (PCPS) composite hydrogel. Phase analysis and electrochemical characterization of PCPS were conducted. The hydrogel electrolyte formed in an alkaline KI environment, when assembled into a battery, achieved a capacity of 494.6 mAh/g and maintained a low potential range of 0.36 V for over 40 h, with an energy efficiency of 86.3 % for the first 60 cycles. To address the issue of dendrite growth in alkaline environments, this study also explores the performance of PCPS composite hydrogel in near-neutral environments.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118721"},"PeriodicalIF":4.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Platinum/Stainless-Steel mesh electrode fabrication via Chemically thermal reduction for efficient hydrogen evolution reaction","authors":"Yuda Prima Hardianto ,&nbsp;Naseemah A. Noorwali ,&nbsp;Syed Shaheen Shah ,&nbsp;Mostafa M. Mohamed ,&nbsp;Syed Ali Abbas ,&nbsp;Muhammad Ashraf ,&nbsp;Md. Abdul Aziz","doi":"10.1016/j.jelechem.2024.118723","DOIUrl":"10.1016/j.jelechem.2024.118723","url":null,"abstract":"<div><div>Platinum-based electrodes continue to be extensively studied, with a key focus on decreasing their cost. This research addresses this challenge by depositing platinum (Pt) nanoparticles onto a cost-effective stainless steel mesh (SSM) substrate for the hydrogen evolution reaction (HER). Pt nanoparticles were deposited on SSM (Pt/SSM) using a simple chemical thermal reduction method. The effects of varying the concentration of the K₂PtCl₄ precursor on Pt deposition and catalytic performance were investigated. Results showed that higher precursor concentrations led to increased Pt loading and improved HER activity, although the loading remained lower than that of commercial electrodes (0.011 mg/cm²). The optimized Pt/SSM, prepared with a 2 mM K₂PtCl₄ solution, achieved a low overpotential of 101 mV and a Tafel slope of 53 mV/decade in 0.5 M H₂SO₄, with excellent stability. These findings highlight the potential of Pt/SSM electrocatalysts for efficient hydrogen production and emphasize the importance of electrolyte conditions in optimizing performance.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"975 ","pages":"Article 118723"},"PeriodicalIF":4.1,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selection of high rate capability and cycling stability MnO anode material for lithium-ion capacitors: Effect of the carbon source","authors":"Jialing Ma ,&nbsp;Huanqiao Song ,&nbsp;Zhihong He ,&nbsp;Yu Chen ,&nbsp;Mingsheng Luo","doi":"10.1016/j.jelechem.2024.118717","DOIUrl":"10.1016/j.jelechem.2024.118717","url":null,"abstract":"<div><div>The <em>N</em>-doped carbon modified MnO composites were successfully prepared using K₂MnO₄ as the manganese source, CH₄N₂O as the nitrogen source, and glucose, sucrose, or reduced graphene oxide as the carbon sources. Among them, the composite (MPN) prepared using glucose as the carbon source exhibited excellent electrochemical performance, attributed to its relatively small particle size (6.4 nm), high specific surface area of 199.4 m²·g⁻¹, and a high I_D/I_G ratio of 0.86. The MnO in MPN contained a significant amount of Mn³⁺, ∼16.8 %, which is ascribed to the incomplete reduction of high valence Mn during the process of synthesis. With the formation of Mn³⁺, a large number of cationic vacancies were generated, which increased the diffusion coefficient of Li⁺ from 2.12 × 10⁻¹⁴ cm² s ⁻¹ to 5.94 × 10⁻¹³ cm² s⁻¹. The carbon layer with appropriate thickness, doped N and mesoporous structure suitable for electrolyte transport provide a fast ion/electron transport channels for MnO, and ensure a stable interface structure in the electrochemical reactions. Consequently, the MPN anode material exhibited remarkable high current discharge capacity (769.5 mAh·g⁻¹ at a high current density of 2 A·g⁻¹) and excellent cycling performance (882.2 mAh·g⁻¹ after 200 cycles at 1 A·g⁻¹), indicating its exceptional rate performance and cycle stability. Furthermore, the lithium ion capacitor constructed with MPN as anode and activated carbon as cathode demonstrated a high specific energy of 190 Wh·kg⁻¹, a high specific power of 205.3 W·kg⁻¹, and an impressive cycling lifespan of up to 3000 cycles without obvious degradation.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118717"},"PeriodicalIF":4.1,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and electrochemical performance of novel high-entropy spinel oxide (FeCoMgCrLi)3O4","authors":"Chengjiao Che ,&nbsp;Jianqiang Bi ,&nbsp;Xihua Zhang ,&nbsp;Yao Yang ,&nbsp;Hongyi Wang ,&nbsp;Jiacheng Rong","doi":"10.1016/j.jelechem.2024.118719","DOIUrl":"10.1016/j.jelechem.2024.118719","url":null,"abstract":"<div><div>High-entropy oxides (HEOs) are attractive options for anode materials in lithium-ion batteries (LIBs) because of their impressive specific capacity and structural stability. The multi-element composition of HEOs endows them with diverse physicochemical properties. However, the role of different elements in the energy storage mechanism remains unclear, and the limited number of successfully synthesized high-entropy oxide systems currently hinders further development. Therefore, developing HEOs with different compositions and studying their electrochemical properties is of great significance. Using the glycine-nitrate solution combustion synthesis (SCS) method, we produced two new High Entropy Oxides (HEOs), namely (FeCoMgCr)₃O₄ and (FeCoMgCrLi)₃O₄, and assessed their electrochemical performance as LIBs anode materials. The studies indicate that the inclusion of lithium significantly enhances the lithium storing capabilities of the material system. Specifically, after undergoing two hundred cycles at a current density of 200 mA/g, (FeCoMgCrLi)₃O₄ exhibited a specific capacity of 658 mAh/g, which was considerably greater than the specific capacity of (FeCoMgCr)₃O₄, which was 306.9 mAh/g. This work enriches the spinel-type high-entropy oxide systems and proposes a new design strategy for HEOs as LIBs anode materials.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118719"},"PeriodicalIF":4.1,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}