Energy technology最新文献

{"title":"Three-Dimensional Porous Spongy Ti3C2Tx MXene/Polyvinyl Alcohol/Agar Gel Electrolyte with High Ionic Conductivity Enables Highly Reversible Zinc-Ion Batteries","authors":"Chun Hu,&nbsp;Wenxin Zhang,&nbsp;Jinmei Zhang,&nbsp;Xiaojing Zhao,&nbsp;Chunyan Xu,&nbsp;Liying Yang,&nbsp;Ningyi Jiang,&nbsp;Shougen Yin","doi":"10.1002/ente.202400772","DOIUrl":"10.1002/ente.202400772","url":null,"abstract":"<p>Gel electrolyte is one of the key components of flexible energy storage devices. The construction of a three-dimensional (3D) porous gel electrolyte with high ionic conductivity is a very effective strategy to improve the performance of zinc-ion batteries (ZIBs). Herein, porous polyvinyl alcohol-Agar-sodium dodecyl sulfate-MXene-dimethyl sulfoxide (DMSO) (denoted as PVA-Agar-SDS-MXene-DMSO (PASMD)) gel electrolyte with double network is prepared through one-pot method by adding two-dimensional (2D) MXene to improve its ionic conductivity and DMSO to increase its low-temperature resistance. Meanwhile, the as-prepared PASMD gel electrolyte with a high ionic conductivity of 50.63 mS cm⁻¹ realizes the gradient induction and redistribution of Zn²⁺, which drives oriented Zn (002) plane deposition of Zn²⁺ and then achieves uniform Zn deposition and dendrite-free anode. The specific capacity of the assembled flexible Zn//PASMD//β-MnO₂ battery can reach 205 mAh g⁻¹ at 0.2 A g⁻¹. It also exhibits good performance both at room temperature and −20 °C with stable cyclic stability for more than 1000 h. After 1000 cycles at 1 A g⁻¹, the assembled flexible battery stabilizes at 67 mAh g⁻¹. This work provides an alternative pathway for the development of high-performance gel electrolytes with low-temperature resistance and high-ionic conductivity for flexible ZIBs.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the Structural, Electronic, Optical, and Thermoelectric Aspects of the Gold-Based Double Perovskites X2Au+Au3+Br6 (X = Cs, Rb) Using a First-Principles Approach","authors":"Shanawer Niaz,&nbsp;Syed Zuhair Abbas Shah,&nbsp;Muhammad Aslam Khan,&nbsp;Amna Parveen,&nbsp;Safdar Hussain,&nbsp;Aiman Liaqat,&nbsp;Abdelmohsen A. Nassani","doi":"10.1002/ente.202400964","DOIUrl":"10.1002/ente.202400964","url":null,"abstract":"<p>Lead-free double perovskites are now assumed to be suitable candidates for green energy harvesting in particular as active materials for solar cells and thermoelectric generators, which can meet future generation energy needs. Therefore, we explore the Au-based halide double perovskites X₂Au⁺Au³⁺Br₆ (X = Cs, Rb) from the first principles approach. Density functional theory (DFT) is utilized to explore the electronic structure with DFT code Quantum ESPRESSO. The mechanical, thermodynamic, and structural stability is ensured from Burn-Haun criterion, formation energies, and Goldschmidt factors, respectively. The examined materials have stable structures with direct band gaps i.e. 1.54 and 1.72 eV. The existence of band gaps in the visible region motivates us to explore the optical properties, which give fascinating outcomes. The absorption coefficients and optical conductivity peaks are found to be significant in the visible region i.e., ≈10⁴cm⁻¹ and ≈10¹⁵s⁻¹, respectively. Additionally, the thermoelectric properties are also investigated using Boltzmann transport theory. There are several good gestures for the usage in the thermoelectric generators since the values of Seebeck coefficients (446.5, and 225.2 μV K⁻¹), power factors (1.75 × 10¹¹W mk⁻² s, and 1.24 × 10¹¹W mk⁻² s), and figure of merits (0.92 and 0.73) are noteworthy for Cs₂AuAuBr₆ and Rb₂AuAuBr₆, respectively, at room temperature <i>T</i> = 300 K.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Self-Organized TiO2 Nanotube Thickness on the Electrochemical Performance of Anodes for Li-Ion Microbatteriess","authors":"Clement Ghigo,&nbsp;Hanna Sopha,&nbsp;Marcela Sepúlveda,&nbsp;Ludek Hromadko,&nbsp;Jhonatan Rodriguez-Pereira,&nbsp;Florence Vacandio,&nbsp;Killian Dénoue,&nbsp;Jan M. Macak,&nbsp;Thierry Djenizian","doi":"10.1002/ente.202400528","DOIUrl":"10.1002/ente.202400528","url":null,"abstract":"<p>Self-organized TiO₂ nanotube (TNT) layers with different thicknesses are prepared by anodization of Ti foils and then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and electrochemical techniques to be used as potential anodes for Li-ion microbatteries. Electrochemical behaviors between 1 and 190 μm thick electrodes, which are the thickest ever studied layers as electrode, have been evaluated by cyclic voltammetry (CV) and chronopotentiometry at various kinetics. The highest areal capacity is obtained for TNT layers of 190 μm providing an initial discharge capacity of ≈5.3 mAh cm⁻² at C/10. At faster kinetics, the ≈80 μm thick TNT layer reveals the best electrochemical behavior by offering 256 μAh cm⁻² at 5 C and a good stability for 200 cycles at C/5. The influence of the increasing thickness on the electrochemical performance at fast rates can be attributed to the uncomplete reaction of TNT layers with Li ions and the enhancement of the formation of a solid electrolyte interphase. It is also shown that a very thick electrode is not able to sustain long and very fast cycles due to the mechanical deformations occurring during the successive insertion/extraction of Li ions.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141746444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon Wrapped Nanosilicon with Reserved Void for High Capacitance and Stable Lithium-Ion Battery Anode","authors":"Qiao Wu,&nbsp;Xiaolai Luo,&nbsp;Lisha Zhou,&nbsp;Zhihong Yang,&nbsp;Luhua Lu","doi":"10.1002/ente.202401192","DOIUrl":"10.1002/ente.202401192","url":null,"abstract":"<p>Applicable anode with an industrial-compatible production process, high capacitance, and good stability is of great importance for the development of lithium-ion battery technology. In this work, a composite of carbon/silicon with a well-reserved void is prepared. The composite shows uniform spherical morphology with rich inside voids between the silicon core and carbon shell. Benefiting from the porous structure, the volumetric variation of silicon in the composite as anode during the charging/discharging process can be reversible, and its good anode stability can be achieved in comparison with carbon-coated silicon without void. The gravimetric capacitance of it reaches 1579.5 mAh g⁻¹. After 100 cycles, the capacitance retention achieves 91.7% compared with 79.8% of carbon-coated silicon without void.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141746107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the Surface-Diffusion Charge Contribution Studies of Zeolitic-Imidazolate-Frameworks-Based Core–Shell Structure for High-Performance Hybrid Supercapacitors","authors":"Mansi,&nbsp;Prashant Dubey,&nbsp;Vishal Shrivastav,&nbsp;Marcin Hołdyński,&nbsp;Shashank Sundriyal,&nbsp;Umesh K. Tiwari,&nbsp;Akash Deep","doi":"10.1002/ente.202400722","DOIUrl":"10.1002/ente.202400722","url":null,"abstract":"<p>In this work, zeolitic imidazolate frameworks (ZIF-8@ZIF-67)-based core–shell structure as a supercapacitor electrode is synthesized. The core–shell structure is designed with a ZIF-8 core, onto which a ZIF-67 shell is grown. This unique architecture aims to expedite the diffusion of electrolyte ions, facilitate inner–outer metal ion electron transfer, and consequently enhance electrochemical performance. When used as an active electrode material, the material delivers 263.43 F g⁻¹ of capacitance at 0.5 A g⁻¹ of discharge rate. The core–shell structure exhibits 68% of surface contribution toward the total capacitance. At the scan rate of 50 mV s⁻¹, the sample almost exhibits equal contribution of diffusion and surface charge contribution. Further an asymmetric supercapacitor (ASC) device is assembled, featuring a ZIF-8@ZIF-67 core–shell metal-organic framework (MOF) as a positive electrode and waste-tissue-paper-derived activated carbon as negative electrode using 1 <span>m</span> H₂SO₄ aqueous electrolyte. The ASC device delivers an energy density of 38.4 Wh kg^<b>−1</b> at the power density of 0.8 kW kg⁻¹, along with long cycle life of 95.2% after an extensive 10 000 cycles. In this work, the significance of the ZIF-based core–shell structure in advancing supercapacitor technology, which further can be extended to multiple core–shell structure and other MOF combination, is highlighted.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141820028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanofluid‐Cooled Microchannel‐Integrated Metal Foam/Phase Change Material Composite‐Based Li‐Ion Battery Pack Design","authors":"Kartik Kumar, Jahar Sarkar, Swasti Sundar Mondal","doi":"10.1002/ente.202400689","DOIUrl":"https://doi.org/10.1002/ente.202400689","url":null,"abstract":"Hybrid cooling has emerged recently for lithium‐ion batteries, and proper pack design is essential for safe operation. Hence, this research explores a novel approach using wavy microchannels in phase change material (PCM) + aluminum foam packs for cylindrical batteries. A comparison between active cooling (microchannels in aluminum block) and hybrid cooling (microchannels in PCM block and foam‐PCM block) employing MXene + Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>/water hybrid nanofluid is made, followed by the impact of the number of microchannels and foam porosity on the cooling effectiveness. Findings indicate that the foam‐PCM yields significantly lower and (309.86 and 2.55 K, respectively) with seven microchannels at 3C discharge with porosity of 85% and pore density of 50 PPI. This also shows a better temperature distribution than other considered blocks. With the increase in porosity from 75% to 95%, there is an adverse effect on and within the cells, which increases from 309.75 to 310.24 K and 2.16 to 3.62 K, respectively. With the increase in microchannels from three to nine, the decreases from 310.04 to 309.72 K, while the increases from 2.05 to 2.85 K. The proposed pack (having moderate weight) yields superior thermal performance, and the enhanced battery life can justify the increased cost.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Oxygen Evolution Reaction Catalytic Properties of Novel Nanowire Structures from FeCo-MOFs/GO via Low-Temperature Annealing","authors":"Hao Liang,&nbsp;Yangbo Lv,&nbsp;Kui Tang,&nbsp;Yuxin Chai,&nbsp;Yu Yang,&nbsp;Zhi Yang,&nbsp;Yuyang Liu,&nbsp;Jianping Sun","doi":"10.1002/ente.202400058","DOIUrl":"10.1002/ente.202400058","url":null,"abstract":"<p>\u0000Metal-organic frameworks (MOFs) often suffer from poor stability, making them suitable precursors for metal oxides/porous carbon catalysts in the oxygen evolution reaction via pyrolysis. High-temperature treatment, however, leads to significant loss of active sites. To address this, Fe-MOFs, FeCo-MOFs, and FeCo-MOFs/graphene oxide (GO) composites using a one-pot hydrothermal method are synthesized and annealed at a low temperature of 300 °C. Characterization reveals that FeCo-MOFs/GO composites possess unique nanowire structures mixed with a small amount of nanoflakes. It is believed that introducing graphene oxide plays a critical role in forming this structure, because the defects in GO provide numerous nucleation sites for nanowire growth. With high specific surface area and good stability, these nanostructures show a low overpotential of 261.5 mV at a current density of 10 mA cm⁻² and a Tafel slope of 20.47 mV dec⁻¹ in 1 mol L⁻¹ KOH alkaline water electrolysis. Density functional theory calculations further indicate that the synergistic effect of Fe and Co atoms enhances the catalytic activity.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technical Aspects of Natural Gas Pyrolysis in Liquid Metal Bubble Column Reactors","authors":"Christoph Hofberger,&nbsp;Benjamin Dietrich,&nbsp;Ralf Krumholz,&nbsp;Adam Paul Noglik,&nbsp;Michael Olbricht,&nbsp;Sabine Schatzmann,&nbsp;Leonid Stoppel,&nbsp;Marie Richter,&nbsp;Neele Uhlenbruck,&nbsp;Thomas Wetzel","doi":"10.1002/ente.202400183","DOIUrl":"10.1002/ente.202400183","url":null,"abstract":"<p>The pyrolysis of low alkanes (in the following short “pyrolysis”) has already been investigated during the 1960s. However, none of the reactor systems used at the time are capable of continuous operation. Therefore, the Karlsruhe Institute of Technology has intensified the development of the promising liquid metal bubble column technology in recent years, which is capable of continuous operation. Various key aspects have been addressed, such as scale-up and the pyrolysis of high-caloric natural gas. Herein, further developments for a pilot scale system have been investigated, which concern increased throughput and long-term operation capabilities. Careful evaluation of the impact of according measures has been done, which shows that the achieved scale-up has only negligible effects on the pyrolysis outcome. The effects of the scale-up on residence times are negligible. The bubble formation behavior depends on the throughput and the characteristics of the orifice. Wall effects are marginal. Fundamental minimization of weeping could not be confirmed. Reactor pre-chambers in combination with tin collection chambers are recommended for further scale-up. An increase in the volume flow should be examined. In terms of long-term operation , head as well as feed pressure control is recommended.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202400183","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial Engineering of BiVO4/Bi2Mo2O9 Heterojunction Toward Photogenerated Carriers Anisotropic Transfer","authors":"Yuli Xiong,&nbsp;Yuting Zhou,&nbsp;Nan Zhou,&nbsp;Bo Peng,&nbsp;Xijun Wei,&nbsp;Zhimin Wu","doi":"10.1002/ente.202400992","DOIUrl":"10.1002/ente.202400992","url":null,"abstract":"<p>Developing an advanced strategy to decrease the charge recombination of BiVO₄ is a vital requirement to boost charge transfer for photoelectrochemical water oxidation. Herein, a type II BiVO₄/Bi₂Mo₂O₉ heterojunction is successfully synthesized on fluorine-doped tin oxide substrate by successive ionic layer adsorption and reaction method. Thanks to the Fermi-level energy difference of 275 mV between BiVO₄ and Bi₂Mo₂O₉, an outward built-in electric filed pointing from Bi₂Mo₂O₉ to BiVO₄ is induced, which accelerates the directional flowing of photogenerated electron and hole. Such a unique design structure fastens the electron migration from BiVO₄ to Bi₂Mo₂O₉, and the holes will transfer to the surface to participate in water oxidation. The longer lifetime (9.2 ns) by time-resolved transient photoluminescence signifies that the Bi₂Mo₂O₉ can boost interfacial carriers’ anisotropic migration; the surface charge transfer rate of BiVO₄/Bi₂Mo₂O₉ is up to 387.6 s⁻¹ (1.4 V vs reversible hydrogen electrode (RHE)). The BiVO₄/Bi₂Mo₂O₉ heterojunction exhibits a remarkable charge separation efficiency of 64% and outstanding photocurrent density of 0.9 mA cm⁻² at 1.23 V versus RHE.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-Thermostatic Internal Combustion Engine—Proton Exchange Membrane Fuel Cell Hybrid Power Generation System Based on Methanol","authors":"Xuan Xie,&nbsp;Zihao Pan,&nbsp;Shuo Shen,&nbsp;Mingqi Tai,&nbsp;Jian Wang,&nbsp;Zhiling Chen,&nbsp;Guirong Tan,&nbsp;Bifeng Yin","doi":"10.1002/ente.202400224","DOIUrl":"10.1002/ente.202400224","url":null,"abstract":"<p>Traditional internal combustion engines (ICEs) have garnered considerable attention due to their high emissions and low efficiency issues. In this study, a novel ICE–fuel cell hybrid power system based on a single-methanol fuel is proposed to address these concerns. The system utilizes methanol as fuel, directly supplying it to the methanol engine, and generates hydrogen for the fuel cell through methanol reforming technology. The structural design of the system fully exploits engine exhaust, first using waste heat for methanol reforming to produce hydrogen and then utilizing exhaust inertial potential energy to drive a dual turbocharging structure for air compression entering the fuel cell, thereby achieving self-thermal balance. Thermodynamic analysis and cost evaluation indicate that the thermal efficiency of this system is improved by 8.34% compared to traditional diesel engine setups. Compared to engine-fuel cell hybrid systems that do not utilize waste heat, the thermal efficiency is increased by 5.81%. In terms of economics, the cost of the methanol engine system is ≈.1466$ <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mrow>\u0000 <mtext>kW h</mtext>\u0000 </mrow>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$left(text{kW h}right)^{- 1}$</annotation>\u0000 </semantics></math>, which is 44.05% lower than the 0.262 $<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mrow>\u0000 <mo> </mo>\u0000 <mtext>kW h</mtext>\u0000 </mrow>\u0000 <mrow>\u0000 <mo>−</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 </msup>\u0000 </mrow>\u0000 <annotation>$left(text{ kW h}right)^{- 1}$</annotation>\u0000 </semantics></math> fuel cost of traditional diesel engine systems. This study presents an innovative solution that significantly enhances thermal efficiency and offers economic advantages, providing a viable approach to address the low efficiency and high emissions issues of traditional ICEs.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}