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Numerical Study of New-Type Receiver with Axially-Hollow Spiral Deflector for Parabolic Trough Direct-Steam-Generation Loop of Concentrating Solar Power System

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Journal of Thermal Science 2023年第2期32卷 597-610页

作者： SHI Yaolu SUN Jie WEI Jinjia School of Chemical Engineering and Technology Xi'an Jiaotong UniversityXi'an 710049China Adv energy Sci&Technol Guangdong Lab Foshan Xianhu LabXianhu Hydrogen ValleyFoshan 528200China

The thermal stress-induced deformation issue of receiver is crucial to the performance and reliability of a parabolic-trough(PT) concentrating solar power(CSP) system with the promising direct steam generation(DSG) *** objective of the present study is to propose a new-type receiver with axially-hollow spiral deflector and optimize the geometric structure to solve the above *** this end,optical-flow-thermal multi-physics coupling models have been established for the preheating,boiling and superheating sections of a typical PT-DSG *** simulation results show that our proposed new-type receiver demonstrates outstanding comprehensive *** can minimize the circumferential temperature difference through the spiral deflector while lower the flow resistance cost through the axially hollow structure at the same *** quantitatively evaluated by the temperature uniformity improvement(ε_(ΔT)) and the performance evaluation criteria(PEC),different designs are achieved based on different optimal *** ε_(ΔT)is of primary importance,the optimal design with torsional ratio of 1 is achieved,with ε_(ΔT)=25.4%,25.7%,41.5% and PEC=0.486,0.878,0.596corresponding to preheating,boiling,superheating sections,*** PEC is of primary importance,the optimal design with torsional ratio of 6-6.5 is achieved,with PEC=0.950,2.070,0.993 and ε_(ΔT)=18.2%,13.3 %,19.4% corresponding to preheating,boiling,superheating sections,respectively.

关键词： concentrating solar power parabolic though collector direct steam generation performance evaluation criteria axially-hollow spiral deflector

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High-performance triboelectric nanogenerator based on ZrB_(2)/polydimethylsiloxane for metal corrosion protection

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International Journal of Minerals,Metallurgy and Materials 2023年第10期30卷 1957-1964页

作者： Xiucai Wang Naijian Hu Jia Yang Jianwen Chen Xinmei Yu Wenbo Zhu Chaochao Zhao Ting Wang Min Chen School of Materials Science and hydrogen energy Guangdong Key Laboratory for Hydrogen Energy TechnologiesFoshan UniversityFoshan 528000China School of Electronic and Information Engineering Foshan UniversityFoshan 528000China Mechatronics Engineering and Automation College Foshan UniversityFoshan 528200China Department of Biomedical Engineering School of MedicineFoshan UniversityFoshan 528225China Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices Huizhou UniversityHuizhou 516001China

Metal corrosion causes billions of dollars of economic losses *** a smart and new energy-harvesting device,triboelectric nanogenerators(TENGs)can convert almost all mechanical energy into electricity,which leads to great prospects in metal corrosion prevention and cathodic *** this work,flexible TENGs were designed to use the energy harvested by flexible polydimethylsiloxane(PDMS)films with ZrB_(2)nanoparticles and effectively improve the dielectric constant by incorporating ZrB_(2).The open-circuit voltage and short-circuit current were 264 V and 22.9μA,respectively,and the power density of the TENGs reached 6 W·m^(-2).Furthermore,a selfpowered anti-corrosion system was designed by the rectifier circuit integrated with TENGs,and the open-circuit potential(OCP)and Tafel curves showed that the system had an excellent anti-corrosion effect on carbon ***,the system has broad application prospects in fields such as metal cultural relics,ocean engineering,and industry.

关键词： ZrB_(2) triboelectric nanogenerator self-powered corrosion protection

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Proton conductivity performance and its correlation with physiochemical properties of proton exchange membrane(PEM)

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Chinese Journal of Chemical Engineering 2024年第10期74卷 100-116页

作者： Mirza Nusrat Sweety Md Abdus Salam hydrogen energy Laboratory Bangladesh Council of Scientific and Industrial Research(BCSIR)Chattogram 4220Bangladesh Institute of Mining Mineralogy and Metallurgy(IMMM)BCSIRJoypurhat 5900Bangladesh BCSIR Dhaka Laboratories Dhaka 1205Bangladesh

Graphene oxide(GO)filler containing diversified Nafion-based proton exchange membrane(PEM)is studied to know the unique physical and chemical properties and performances of ***-SPEEK 1%-GO 0.75%(NSG-0.75%)composite shows the highest proton conductivity of 0.327 S·cm^(-1) at 90℃ and 100%RH(relative humidity)among all the PEM *** descending order of significant proton conductivity is found as;Nafion-sPGO(1%)0.306 S·cm^(-1)>Nafion/ZIF-8@GO 0.280 S·cm^(-1)>Nafion/PGO(2%)0.277 S·cm^(-1)>Nafion/GO-sulfur(3%)0.232 S·cm^(-1)>Nafion/GO-poly-SPM-co-PEGMEMA(1%)0.229 S·cm^(-1)>Nafion/Ce-sPGO(1%)0.215 S·cm^(-1).The proton conductivity,water uptake capacity and ion exchange capacity,hydration number,thermal and oxidative stability,mechanical integrity(tensile strength),maximum power,and current density are found to be increased while activation energy and fuel crossover show a decrement as GO or modified GO is incorporated in the Nafion *** component analysis(PCA)predicted a significant correlation between the proton conductivity and the properties;the water uptake capacity,ion exchange capacity,hydration number,maximum power density,and maximum current density are 0.598%,0.688%,0.894%,0.980%,and 0.852%accordingly.A multiple linear model equation of proton conductivity is defined with the parameters of water uptake capacity,ion exchange capacity,hydration number,maximum power density,and maximum current density whereas the regression coefficient is 0.9923.

关键词： Fuel cells Membranes Nafion GO-filler Proton conductivity Principal component analysis

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Properties of boron doped ZnO films prepared by reactive sputtering method: Application to amorphous silicon thin film solar cells

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Journal of Materials Science & Technology 2020年第20期52卷 136-143页

作者： Sukanta Bose Sourav Mandal Asok K.Barua Sumita Mukhopadhyay centre of Excellence for Green energy and Sensor Systems Indian Institute of Engineering Science and TechnologyShibpurHowrah 711103West BengalIndia centre for energy Studies Indian Institute of Technology DelhiNew Delhi 110016India

Reactive sputtered boron-doped zinc oxide(BZO) film was deposited from argon,hydrogen and boron gas *** reactive sputtering technique provides us the flexibility of changing the boron concentration in the produced films by using the same intrinsic zinc oxide *** surface was obtained in the as-deposited *** surface morphology and the opto-electronic properties of the films can be controlled by simply varying the gas concentration *** varying the gas concentration ratio,the best obtained resistivity ~6.51×10^-4Ω-cm,mobility ~19.05 cm^2 V^-1 s^-1 and sheet resistance ~7.23Ω/□ were *** lower wavelength of light,the response of the deposited films improves with the increase of boron in the gas mixture and the overall transmission in the wavelength region 350-1100 nm of all the films are>85 %.We also fabricated amorphous silicon(a-Si) thin film solar cell on the best obtained BZO *** overall efficiency of the a-Si solar cell is 8.14 %,found on optimized BZO layer.

关键词： Magnetron reactive sputtering BZO Amorphous silicon Solar cells Zinc oxide(ZnO)

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A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and energy Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （HER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： hydrogen evolution reaction

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Enhanced electron transport through two-dimensional Ti_(3)C_(2) in dye-sensitized solar cells

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Rare Metals 2022年第9期41卷 3078-3085页

作者： Gang Wang Li-Jiao Ma Bing-Xin Lei Heng Wu Zhao-Qing Liu Key Laboratory of Electrochemical energy Storage and energy Conversion of Hainan Province Key Laboratory of Electrochemical Energy Storage and Light Energy Conversion Materials of Haikou CitySchool of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou571158China School of Materials and Environment Guangxi University for NationalitiesNanning530006China Guangzhou Key Laboratory for Clean energy and Materials Huangpu Hydrogen Innovation CenterInstitute of Clean Energy and MaterialsSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China

Two-dimensional(2D)Ti_(3)C_(2) material has a wide range of photovoltaic applications due to its unique electronic,optical,and plasmonic ***,we present a series of Ti_(3)C_(2)(0,0.6,0.8;wt%)nanosheets-modified P25 nanoparticles as photoanode films for dye-sensitized solar cells(DSSCs).The DSSC based on P25 and 0.6 wt%Ti_(3)C_(2) photoanode achieves a fairly good efficiency(9.22%),which greatly exceeds the counterpart based on the pure P25(7.16%).Benefiting from high light scattering and metallic electrical conductivity of Ti_(3)C_(2) additive,the P25/Ti_(3)C_(2)-based DSSC exhibits a superior behavior of controlling photogenerated charge recombination compared with pure P25 one.

关键词： Ti3C2 Conductivity Charge transfer Dyesensitized solar cells

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The Role of Processing Solvent on Morphology Optimization for Slot-Die Printed Organic Photovoltaics

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Chinese Journal of Polymer Science 2023年第6期41卷 842-850,I0005页

作者： Lei Wang Jun-Zhe Zhan Wen-Kai Zhong Lei Zhu Guan-Qing Zhou Tian-Yu Hao Ye-Cheng Zou Zhen-Hua Wang Gang Wei Yong-Ming Zhang Feng Liu School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Frontiers Science Center for Transformative Molecules Center of Hydrogen ScienceSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai200240China State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future hydrogen energy Materials Company Zibo 256401China

The morphology manipulation of the active layers is important for improving the performance of organic photovoltaics(OPVs).The choice of processing solvent has great impact on the crystallization and phase separation during film formation,since solvent properties,including solvent effect on molecular crystallization,boiling point,and interaction parameters,can directly change the evolution pathways associated with thermodynamics and ***,revealing the underlying solvent-regulated morphology mechanism is potential to provide guiding strategies for device *** this study,chloroform,chlorobenzene,and toluene are used to process PM6:Y6 blends by slot-die printing to fabricate OPV *** chloroform printed film forms a fibrillar network morphology with enhanced crystallization,facilitating exciton dissociation,charge transport and extraction,resulting in an optimal power conversion efficiency of 16.22%.However,the addition of the additive chloronaphthalene in chloroform solution leads to over-crystallization of Y6,and thus,increasing domain size that exceeds the exciton diffusion length,resulting in lower device *** addition,both the chlorobenzene and toluene suppress the crystallization of Y6,which drastically decreased short-circuit current and fill *** results demonstrate the important role of processing solvent in dictating film morphology,which critically connects with the resultant printed OPV performance.

关键词： crystallization chloroform film

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Advanced 2D molybdenum disulfide for green hydrogen production: Recent progress and future perspectives

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Frontiers in energy 2024年第3期18卷 308-329页

作者： Meng FANG Yuqin PENG Puwei WU Huan WANG Lixin XING Ning WANG Chunmei TANG Ling MENG Yuekuan ZHOU Lei DU Siyu YE Huangpu hydrogen energy Innovation centre School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China Sustainable energy and Environment Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong KongChina SinoHykey Technology Company Ltd. Guangzhou 510760China

The development of renewable and affordable energy is crucial for building a sustainable society. In this context, establishing a sustainable infrastructure for renewable energy requires the integration of energy storage, specifically use of renewable hydrogen. The hydrogen evolution reaction (HER) of electrochemical water splitting is a promising method for producing green hydrogen. Recently, two-dimensional nanomaterials have shown great promise in promoting the HER in terms of both fundamental research and practical applications due to their high specific surface areas and tunable electronic properties. Among them, molybdenum disulfide (MoS2), a non-noble metal catalyst, has emerged as a promising alternative to replace expensive platinum-based catalysts for the HER because MoS_(2)has a high inherent activity, low cost, and abundant reserves. At present, greatly improved activity and stability are urgently needed for MoS_(2)to enable wide deployment of water electrolysis devices. In this regard, efficient strategies for precisely modifying MoS_(2)are of interest. Herein, the progress made with MoS_(2)as an HER catalyst is reviewed, with a focus on modification strategies, including phase engineering, morphology design, defect engineering, heteroatom doping, and heterostructure construction. It is believed that these strategies will be helpful in designing and developing high-performance and low-cost MoS2-based catalysts by lowering the charge transfer barrier, increasing the active site density, and optimizing the surface hydrophilicity. In addition, the challenges of MoS_(2)electrocatalysts and perspectives for future research and development of these catalysts are discussed.

关键词： molybdenum disulfide(MoS_(2)) hydrogen evolution reaction(HER) active site electrocatalyst modification strategie

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High-efficient solar-driven hydrogen production by full-spectrum synergistic photo-thermo-catalytic methanol steam reforming with in-situ photoreduced Pt-CuO_(x) catalyst

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Journal of energy Chemistry 2022年第8期31卷 460-469,I0012页

作者： Donghui Li Jie Sun Rong Ma Jinjia Wei School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Adv energy Sci&Technol Guangdong Lab Foshan Xianhu LabXianhu Hydrogen ValleyFoshan 528200GuangdongChina

Synergy between the intrinsic photon and thermal effects from full-spectrum sunlight for H_(2) production is considered to be central to further improve solar-driven H_(2) *** that end,the photo-thermocatalyst that demonstrates both photoelectronic and photothermal conversion capabilities have drawn much attention ***,we propose a novel synergistic full-spectrum photo-thermo-catalysis technique for high-efficient H_(2) production by solar-driven methanol steam reforming(MSR),along with the Pt-Cu Oxphoto-thermo-catalyst featuring Pt-Cu/Cu_(2)O/CuO heterojunctions by Pt-mediated in-situ photoreduction of Cu *** results show that the H_(2) production performance rises superlinearly with increasing light *** optimal H_(2) production rate of 1.6 mol g^(-1) h^(-1) with the corresponding solar-to-hydrogen conversion efficiency of 7%and the CO selectivity of 5%is achieved under 15×sun full-spectrum irradiance(1×sun=1 k W m^(-2))at 180°C,which is much more efficient than the previously-reported Cu-based thermo-catalysts for MSR normally operating at 250~350°*** attractive performances result from the optimized reaction kinetics in terms of intensified intermediate adsorption and accelerated carrier transfer by long-wave photothermal effect,and reduced activation barrier by short-wave photoelectronic effect,due to the broadened full-spectrum absorbability of *** work has brought us into the innovative technology of full-spectrum synergistic photothermo-catalysis,which is envisioned to expand the application fields of high-efficient solar fuel production.

关键词： Solar-driven hydrogen production Photo-thermo-catalysis Copper oxide Methanol steam reforming Reaction kinetics optimization

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The structure-performance correlation of bulk-heterojunction organic solar cells with multi-length-scale morphology

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Science China Chemistry 2022年第8期65卷 1634-1641页

作者： Tianyu Hao Wenkai Zhong Shifeng Leng Rui Zeng Ming Zhang Lei Zhu Yankang Yang Jingnan Song Jinqiu Xu Guanqing Zhou Yecheng Zou Yongming Zhang Feng Liu School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesIn-situ Center for Physical ScienceCenter of Hydrogen ScienceShanghai Key Lab of Electrical Insulation&Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Fluorinated Functional Membrane Materials Shandong Dongyue Future Hydrogen Energy Materials CompanyZibo 256401China

We build a general multi-length-scale morphology model with mixing phase and pure phase fibril structure,and simulate corresponding organic solar cells *** multi-length-scale morphology optimization process by changing the proportion of mixing phase and pure phase in different period width cases shows a clear correlation between period width and device performance that a smaller period width with appropriate proportion of mixing phase and fibril structure is advantageous to achieve high-performance *** on multiple donor/acceptor blends have been carried out by varying the composition and processing condition,which afford good structure-performance correlation that supports the model *** is demonstrated that building such a multi-length-scale morphology merging the synergistic effects of mixing and pure phases is indeed an imperative avenue to improve device efficiency.

关键词： multi-length-scale morphology simulations organic photovoltaics morphology-performance relationship

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