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Unassisted photoelectrochemical CO_(2)reduction by employingⅢ-Ⅴphotoelectrode with 15%solar-to-fuel efficiency

Carbon Energy 2025年第3期7卷 1-10页

作者： Karthik Peramaiah Purushothaman Varadhan Vinoth Ramalingam Bilawal Khan Pradip Kumar Das Hao Huang Hui-Chun Fu Xiulin Yang Vincent Tung Kuo-Wei Huang Jr-Hau He Chemistry Program Center for Renewable Energy and Storage Technologies(CREST)and Division of Physical Science and EngineeringKing Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia Institute of Sustainability for Chemicals Energyand Environment(ISCE2)Agency for ScienceTechnologyand Research(A*STAR)Singapore School of Computing Engineering and TechnologyRobert Gordon UniversityAberdeenUK Department of Materials Science and Engineering City University of Hong KongKowloonSARHong KongChina Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilinChina Department of Chemical System and Engineering University of TokyoTokyoJapan

Solar-driven carbon dioxide reduction reaction(CO_(2)RR)provides an oppor tunity to produce value-added chemical feedstocks and ***,achieving efficient and stable photoelectrochemical(PEC)CO_(2)RR into selec tive products is challenging owing to the difficulties associated with the optical and the electrical configuration of PEC devices and electrocatalyst ***,we construct an efficient,concentrated sunlight-driven CO_(2)RR setup consisting of InGaP/GaAs/Ge triple-junction cell as a photoanode and oxide-derived Au(Ox-Au)as a cathode to perform the unassisted PEC CO_(2)*** one-sun illumination,a maximum operating current density of 11.5 mA cm^(-2) with an impressive Faradaic efficiency(FE)of~98%is achieved for carbon monoxide(CO)production,leading to a solar-to-fuel conversion efficiency of~15%.Under concentrated intensity of 10 sun,the photoanode records a maximum current density of~124 mAcm^(-2) and maintains~60%of FE for CO *** results demonstrate crucial advancements in usingⅢ-Ⅴbased photoanodes for concentrated PEC CO_(2)RR.

关键词： photoelectrochemical oxide derived Au concentrated sunlight selec tive products III V photoelectrode pec devices CO reduction solar fuel efficiency

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Data-driven analysis of process,structure,and properties of additively manufactured Inconel 718 thin walls

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npj Computational materials 2022年第1期8卷 1168-1182页

作者： Lichao Fang Lin Cheng Jennifer A.Glerum Jennifer Bennett Jian Cao Gregory J.Wagner Department of Mechanical Engineering Northwestern UniversityEvanstonIL60208USA Department of Materials Science and Engineering Northwestern UniversityEvanstonIL60208USA DMG MORI Hoffman EstatesIL60192USA Department of Mechanical and Materials Engineering Worcester Polytechnic InstituteWorcesterMA01609USA Department of Civil and Mechanical Engineering US Military Acadeemy at West PointWest PointNY10996USA

In additive manufacturing of metal parts,the ability to accurately predict the extremely variable temperature field in detail,and relate it quantitatively to structure and properties,is a key step in predicting part performance and optimizing process *** this work,a finite element simulation of the directed energy deposition(DED)process is used to predict the space-and time-dependent temperature field during the multi-layer build process for Inconel 718 *** thermal model results show good agreement with dynamic infrared images captured in situ during the DED *** relationship between predicted cooling rate,microstructural features,and mechanical properties is examined,and cooling rate alone is found to be insufficient in giving quantitative property *** machine learning offers an efficient way to identify important features from series data,we apply a 1D convolutional neural network data-driven framework to automatically extract the dominant predictive features from simulated temperature *** good predictions of material properties,especially ultimate tensile strength,are obtained using simulated thermal history *** further interpret the convolutional neural network predictions,we visualize the extracted features produced on each convolutional layer and compare the convolutional neural network detected features of thermal histories for high and low ultimate tensile strength cases.A key result is the determination that thermal histories in both high and moderate temperature regimes affect material properties.

关键词： Inconel process additive

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Minimizing ad hoc Technical Safety Assessments: Use of AHP for Prioritization of Passive Fire Protection Alternatives

Minimizing ad hoc Technical Safety Assessments: Use of AHP f...

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2023 IEEE International Conference on Industrial engineering and engineering Management, IEEM 2023

作者： Ocheni, E.S. Ratnayake, R. M. Chandima University of Stavanger Department of Mechanical and Structural Engineering and Materials Science Stavanger Norway

ISBN: (纸本)9798350323153

Technical safety assessment is essential for ensuring the asset integrity of oil & gas production & process facilities to prevent accidents and mitigate unwanted consequences. Passive fire protection (PFP) provides technical safety assurance and reduces asset damage by explosion risk and fire spread. Applying the PFP also gives adequate time to escape and for evacuation, thereby reducing casualties and fatalities. The PFP-related decisions have been ad hoc, leading to suboptimal fire protection. This paper presents a systematic multi-criteria decision analysis approach for selecting the most viable PFP option. It demonstrates how to prioritize selecting PFP materials for an offshore topside production and process facility using the analytic hierarchy process (AHP). The PFP decision hierarchy has been developed using a real-time case study. The possible alternatives are: 'PFP made of Cellular glass/AES fiber,' 'Lambda EasyFLEX/Favuseal wrap-on,' or 'not having PFP.' The decision model considers the following criteria: cost implication, platform weight, space constraints, and risk level to justify the type of PFP and avoid overkill. The findings and the methodology suggested that it is helpful for PFP practitioners to minimize ad hoc prioritization practices in the PFP-related decision analysis. © 2023 IEEE.

关键词： Analytic Hierarchy Process Asset Integrity Passive Fire Protection Risk Management Technical Safety Assessment

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Nano-multilayered ZrN‒Ag/Mo‒S‒N film design for stable anti-frictional performance at a wide range of temperatures

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Friction 2024年第12期12卷 2826-2837页

作者： Hongbo JU Jing LUAN Junhua XU Albano CAVALEIRO Manuel EVARISTO Filipe FERNANDES School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Department of Mechanical Engineering CEMMPREARISEUniversity of CoimbraRua Luís Reis SantosCoimbra 3030-788Portugal TINT-Laboratory for Tribology and Interface Nanotechnology Faculty of Mechanical EngineeringUniversity of LjubljanaAškerčeva 6Ljubljana 1000Slovenia CIDEM ISEP-Polytechnic of PortoRua Dr.António Bernardino de AlmeidaPorto 4249-015Portugal

A multilayer film,composed by ZrN‒Ag(20 nm)and Mo‒S‒N(10 nm)layers,combining the intrinsic lubricant characteristics of each layer was deposited using DC magnetron sputtering system,to promote lubrication in a wide-range of *** results showed that the ZrN‒Ag/Mo‒S‒N multilayer film exhibited a sharp interface between the different layers.A face-centered cubic(fcc)dual-phases of ZrN and Ag co-existed in the ZrN‒Ag layers,whilst the Mo‒S‒N layers displayed a mixture of hexagonal close-packed MoS_(2)(hcp-MoS_(2))nano-particles and an amorphous *** multilayer film exhibited excellent room temperature(RT)triblogical behavior,as compared to the individual monolayer film,due to the combination of a relative high hardness with the low friction properties of both *** reorientation of MoS_(2)parallel to the sliding direction also contributed to the enhanced anti-frictional performance at *** 400℃,the reorientation of MoS_(2)as well as the formation of MoO_(3)phase were responsible for the lubrication,whilst the hard t-ZrO_(2)phase promoted abrasion and,consequently,led to increasing wear *** 600℃,the Ag_(2)MoO_(4)double-metal oxide was the responsible for the low friction and wear-resistance;furthermore,the observed transformation from t-ZrO_(2)to m-ZrO_(2),could also have contributed to the better tribological performance.

关键词： DC magnetron sputtering ZrN‒Ag/Mo‒S‒N multilayer film tribological properties tribo-phases

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Boron Nitride-Integrated Lithium Batteries:Exploring Innovations in Longevity and Performance

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Energy & Environmental materials 2024年第6期7卷 13-40页

作者： Shayan Angizi Sayed Ali Ahmad Alem Mahdi Torabian Maryam Khalaj Dmitri Golberg Amir Pakdel Department of Chemical Engineering McMaster University1280 Main St WHamiltonONL8S 4L7 Canada Institute of Chemistry of Polymeric Materials Montanuniversität LeobenOtto-Glöckel-Strasse 2A-8700 LeobenAustria Department of Chemistry Materials and Chemical EngineeringPolitecnico di MilanoPiazza Leonardo da Vinci 3220133 MilanItaly Department of Materials Science and Engineering Northwestern UniversityEvanstonIL60208 USA Centre for Materials Science and School of Chemistry and Physics Queensland University of Technology(QUT)2 GeorgeBrisbaneQLD4000 Australia Research Centre for Materials Nanoarchitectonics(MANA) National Institute for Materials Science(NIMS)Namiki 1Ibaraki3050044 Japan Department of Mechanical Manufacturing and Biomedical EngineeringTrinity College DublinThe University of DublinDublinD02PN40 Ireland

The current global warming,coupled with the growing demand for energy in our daily lives,necessitates the development of more efficient and reliable energy storage *** batteries(LBs)are at the forefront of emerging power sources addressing these *** studies have shown that integrating hexagonal boron nitride(h-BN)nanomaterials into LBs enhances the safety,longevity,and electrochemical performance of all LB components,including electrodes,electrolytes,and separators,thereby suggesting their potential value in advancing eco-friendly energy *** review provides an overview of the most recent applications of h-BN nanomaterials in *** begins with an informative introduction to h-BN nanomaterials and their relevant properties in the context of LB ***,it addresses the challenges posed by h-BN and discusses existing strategies to overcome these limitations,offering valuable insights into the potential of BN *** review then proceeds to outline the functions of h-BN in LB components,emphasizing the molecular-level mechanisms responsible for performance ***,the review concludes by presenting the current challenges and prospects of integrating h-BN nanomaterials into battery research.

关键词： electrode electrolyte hexagonal boron nitride lithium battery separator

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Exploring the electromagnetic shielding behavior of lanthanum doped calcium nanoferrites

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Journal of Rare Earths 2024年第11期42卷 2128-2136,I0005页

作者： E.Ahilandeswari K.Sakthipandi R.Rajesh Kanna G.Rajkumar B.Ganesh Babu S.Arunmetha Aslam Hossain P.Sakthivel V.Rajendran M.Srinidhi Raghavan Department of Physics SRM TRP Engineering CollegeTiruchirappalli621105Tamil NaduIndia Department of Electronics and Communication Engineering M.Kumarasamy College of EngineeringKarur639113Tamil NaduIndia Department of Physics Easwari Engineering CollegeChennai600089Tamil NaduIndia Department of Mechanical Engineering SRM TRP Engineering CollegeTiruchirappalli621105Tamil NaduIndia Centre for Advanced Energy Studies Department of Electronics and Communication EngineeringKoneru Lakshmaiah Education FoundationGunturAndhra Pradesh522502India Smart Materials Research Institute Southern Federal UniversitySladkova 178/24344090Rostov-on-DonRussia Centre for Materials Science Department of PhysicsScience and HumanitiesFaculty of EngineeringKarpagam Academy of Higher EducationCoimbatore641021Tamil NaduIndia Centre for Nanotechnology Academy of Maritime Education and Training(Deemed to be University)Chennai603112Tamil NaduIndia Department of Chemistry and Centre for Nano-Materials and Displays B.M.S.College of EngineeringBengaluru560019KarnatakaIndia

The present study focuses on the synthesis and characterization of lanthanum(La^(3+))-doped calcium nanoferrites(CaLa_(x)Fe_(2-x)O_(4):x=0.025,0.050,0.075 and 0.100)using the sonochemical *** techniques were employed to analyze the effect of La^(3+)infusion,Raman spectroscopy confirms the presence of active A_(1g),T_(2g)and E_g modes in the CaLa_(x)Fe_(2-x)O_(4)nanoferrite,indicating the formation of an active ferrite *** introduction of La^(3+)doping results in a significant increase in the band gap energy,rendering the nanoferrites insulating(3.23-3,57 eV).At higher frequencies,the impedance studies reveal minimal losses and better AC conductivity,pointing to improved dielectric *** higher frequencies,the Q-factor of La-doped calcium nanoferrites shows lower electromagnetic *** M-H curve exhibits ferromagnetic behavior,with La^(3+)-doped calcium nano ferrites displaying a saturation magnetization ranging from 12.72 to 18.10 emu/*** incorporation of La^(3+)also induces enhanced electrical polarization,leading to notable dielectric loss and increased absorption of electromagnetic ***,these CaLa_(x)Fe_(2-x)O_(4)nanoferrites demonstrate potential as effective microwave absorbers across a wide frequency range,with significant shielding absorption observed at 8.8-9.1 GHz.

关键词： Nanoferrites Structural properties Rare earths Dielectric Magnetism Microwave absorption

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Evolution of deformation mechanisms and their orientation dependence in fine-grained Mg-3Gd during tension

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Journal of Magnesium and Alloys 2024年第12期12卷 5095-5107页

作者： Faping Hu Tianbo Yu Hao Chen Fang Han Keshun Dai Fangcheng Qiu Weidong Xie Xiaoxu Huang Electric Power Research Institute Yunnan power Grid Co.Ltd.KunmingYunnan 650217China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Department of Civil and Mechanical Engineering Technical University of DenmarkDK-2800 KgsLyngbyDenmark

Magnesium alloys usually exhibit poor ductility attributed to their intrinsic hexagonal close-packed(hcp)structure,which fails to provide sufficient independent slip systems for homogeneous *** we demonstrate that multiple deformation mechanisms can be activated with increasing tensile strain in a fine-grained Mg-3Gd with a weak basal texture.slip,tension twinning and compression/double twinning exhibit a high orientation dependence at an early stage of deformation,whereas the orientation dependence becomes less obvious with further increasing *** high work hardening rate at the strain of 2%–5%is accompanied by the significant increase ofslip and tension twinning *** fine microstructure strongly restricts the activation and growth of twinning,resulting in a slow exhaust of tension twinning and thin compression *** restriction of twinning and the activation of profuseslip near grain/twin boundaries,relaxing the stress concentration,sustain the homogeneous deformation to a high strain.

关键词： Fine-grained Mg alloy Deformation mechanisms Orientation dependence mechanical property

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Novel soft robotic finger model driven by electrohydrodynamic(EHD)pump

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Journal of Zhejiang University-science A(Applied Physics & engineering) 2024年第7期25卷 596-604页

作者： Xuehang BAI Yanhong PENG Dongze LI Zhuochao LIU Zebing MAO Department of Mechanical Automotive and Materials EngineeringFaculty of EngineeringUniversity of WindsorWindsorN9B 3P4Canada Department of Information and Communication Engineering Graduate School of EngineeringNagoya UniversityNagoya464-8601Japan Department of Intelligent Science and Technology College of Computer Science and TechnologyQingdao UniversityQingdao266071China Design and Research Institute of University of Science and Technology Beijing Co.Ltd. Beijing100083China Faculty of Engineering Yamaguchi UniversityYamaguchi755-8611Japan

1Introduction In the field of robotic-human interactions,soft robotics offers enhanced safety and adaptability.A major challenge in this area is the integration of soft actuators with pump systems,which often increases the system volume and *** study presents the development and testing of a robotic finger powered by electrohydrodynamic(EHD)*** leveraging the electric field-induced flow of dielectric fluids.

关键词： robotic complexity. pump

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Recent Advances in Functionalized Fullerenes in Perovskite Solar Cells

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Chinese Journal of Chemistry 2023年第18期41卷 2337-2353页

作者： Min Ai Muqing Chen Shangfeng Yang School of Environment and Civil Engineering Dongguan University of TechnologyDongguanGuangdong 523808China CAS Key Laboratory of Materials for Energy Conversion Anhui Laboratory of Advanced Photon Science and Technology&Department of Materials Science and EngineeringUniversityof Science and Technology of ChinaHefeiAnhui 230026China Department of Physics&Mechanical and Electronic Engineering Hubei University ofEducationWuhanHubei 430205China

Comprehensive Summary,Efficient charge transport and defect passivation are essential for high efficiency of organic–inorganic hybrid perovskite solar cells(PSCs).Functionalized fullerenes featuring high electron affinity and mobility as well as small reorganization energy have been extensively applied in PSCs toward facilitated electron transport and passivated trap states,leading to improvements of both device efficiency and ***,we summarize the recent advances,especially in the last three years,in applications of functionalized fullerenes including fullerene derivatives and endohedral metallofullerenes in *** functions in trap state passivation,electron transport promotion,crystalline modulation,water/oxygen erosion inhibition,and so on,are discussed in *** particular,we emphasize novel functions of fullerenes beyond trap state passivation,as well as the synergy of multifunction of fullerenes in improving PSC device performance and ***,we present an outlook on designing novel multifunctionalized fullerenes toward highly efficient and stable PSC devices.

关键词： Fullerene Functionalized fullerenes Perovskite solar cells Electron transport layers Additives Interfacial modifiers

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Deciphering the glass-forming ability of Al_(2)O_(3)-Y_(2)O_(3)system from temperature susceptibility of melt structure

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Journal of materials science & Technology 2024年第18期185卷 48-57页

作者： Pingsheng Lai Xuan Ge Caijuan Shi Jianqiang Li Fan Yang Wenquan Lu Jianguo Li Qiaodan Hu Shanghai Key Laboratory of Materials Laser Processing and Modification School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Chemistry and Bioscience Aalborg UniversityAalborg 9220Denmark Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Despite its significance in both fundamental science and industrial applications,the glass-forming transition in the Al_(2)O_(3)-Y_(2)O_(3)(AY)refractory system is not yet fully understood due to the elusive structure evolution upon ***,atomic-scale structural changes in AY-bearing melts with different compositions and temperatures are tracked by employing in situ high-energy synchrotron X-ray diffraction and empirical potential structure refinement *** find that the glass-forming abilities(GFA)of AY-bearing melts are intriguingly correlated with the dependence of melt structure on *** the case of the Al_(2)O_(3)and Y_(3)A_(l5)O_(12)(YAG),the observed large structural changes from superheating to under-cooling melt(i.e.,higher temperature susceptibility)correspond to a low ***,the 74Al_(2)O_(3)-26Y_(2)O_(3)(AY26)melt,with the smallest temperature susceptibility,exhibits the highest *** models illustrate that the temperature susceptibility of melt is associated with its atomic arrangement,especially the stability of cation-cation pairs.A balanced network(in AY26 melt),where the unsteady OAl3 tri-clusters are minimized and steady apex-to-apex connections between adjacent network units are abundant,contributes to stabilizing cationic ***,in turn,fosters the formation of largesized Al-O-Al rings,which topologically facilitates the subsequent glass-forming *** findings provide new structural insight into the GFA of AY-bearing melts and may expand to other unconventional glass-forming systems to accelerate glassy materials design.

关键词： Glass-forming ability Al_(2)O_(3)-Y_(2)O_(3)glasses Melt structure High-energy synchrotron X-ray diffraction Aerodynamic levitation EPSR simulation

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