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Direct seawater splitting for hydrogen production:Recent advances in materials synthesis and technological innovation

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Green Energy & Environment 2025年第1期10卷 11-33页

作者： Yilin Zhao Zhipeng Yu Aimin Ge lujia Liu Joaquim Luis Faria Guiyin Xu Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai201620China International Iberian Nanotechnology Laboratory(INL) Avenida Mestre Jose VeigaBraga4715-330Portugal The MacDiarmid Institute for Advanced Materials and Nanotechnology School of Chemical and Physical SciencesVictoria University of WellingtonWellington6012New Zealand LSRE-LCM-Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials Faculty of EngineeringUniversity of PortoRua Dr.Roberto Frias s/nPorto4200-465Portugal ALiCE-Associate Laboratory in Chemical Engineering Faculty of EngineeringUniversity of PortoRua Dr.Roberto Frias s/nPorto4200-465Portugal

Direct seawater splitting has emerged as a popular and promising research direction for synthesising clean,green,non-polluting,and sustainable hydrogen energy without depending on high-purity water in the face of the world’s shortage of fossil ***,efficient seawater splitting is hindered by slow kinetics caused by the ultra-low conductivity and the presence of bacteria,microorganisms,and stray ions in ***,producing hydrogen on an industrial scale is challenging due to the high production *** present review addresses these challenges from the catalyst point of view,namely,that designing catalysts with high catalytic activity and stability can directly affect the rate and effect of seawater *** the ion transfer perspective,designing membranes can block harmful ions,improving the stability of seawater *** the energy point of view,mixed seawater systems and self-powered systems also provide new and low-energy research systems for seawater ***,ideas and directions for further research on direct seawater splitting in the future are pointed out,with the aim of achieving low-cost and high-efficiency hydrogen production.

关键词： Seawater splitting Catalyst Membranes Mixed seawater systems Self-powered systems

Volumetric Changes in Hippocampal Subregions and Memory Performance in Mesial Temporal Lobe Epilepsy with Hippocampal Sclerosis

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Neuroscience Bulletin 2018年第2期34卷 389-396页

作者： Caihong Ji lujia Zhu cong Chen Shuang Wang Leilei Zheng Hong Li Department of Neurology Epilepsy Center Second Affiliated Hospital School of Medicine Zhejiang University Department of Psychology Second Affiliated HospitalSchool of Medicine Zhejiang University Department of Radiology Second Affiliated Hospital School of Medicine Zhejiang University

In the present study we explored the different patterns of volumetric atrophy in hippocampal subregions of patients with left and right mesial temporal lobe epilepsy with hippocampal sclerosis(TLE-HS). Meanwhile, the memory impairment patterns in Chinese-speaking TLE-HS patients and potential influencing factors were also determined. TLE-HS patients(21 left and 17 right) and 21 healthy controls were recruited to complete T2-weighted imaging and verbal/nonverbal memory assessment. The results showed that both left and right TLE-HS patients had overall reduced hippocampal subregion volumes on the sclerotic side, and cornu ammonis sectors(CA1) exhibited maximum atrophy. The verbal memory of left TLE-HS patients was significantly impaired(P \ 0.001) and was not associated with the volumes of the left hippocampal subregions. Verbal or nonverbal memory impairment was not found in the patients with right TLE-HS. These results suggested that the atrophy of hippocampal subregion volumes cannot account for the verbal memory impairment, which might be related to the functional network.

关键词： TLE

Atomization mechanism of a charged viscoelastic liquid sheet

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Chinese Journal of Aeronautics 2015年第2期28卷 403-409页

作者： Liu lujia Liu Yingjie Lu Lipeng School of Astronautics Beihang University School of Energy and Power Engineering Beihang University

In order to study atomization mechanism of a viscoelastic liquid sheet in an electric field, the spatial-temporal stability analysis of a viscoelastic liquid sheet injected into a dielectric station- ary ambient gas in the presence of a vertical electric field is conducted. The dispersion relations of both sinuous and varicose disturbance modes are solved to explore the spatial-temporal instability of a charged viscoelastic sheet, by setting both the wave number and frequency complex. A para- metric study is performed to test the influence of the dimensionless parameters on the absolute instability of the sheet. The results show that the increase of liquid Weber number and time constant ratio, or decrease of gas to liquid density ratio and Reynolds number, can damp the absolute insta- bility. The effect of the liquid elasticity depends on the value of time constant ratio： when time con- stant ratio is small, the increase of liquid elasticity could amplify absolute growth rate, but the effect is weak when the elasticity number is relatively large; when time constant ratio is large, the increase of liquid elasticity cannot affect the absolute growth rate. Moreover, the variation of electrical Euler number can hardly influence the absolute instability of a charged viscoelastic sheet.

关键词： Absolute growth rate Absolute instability Electrified sheet Spatial-temporal instability Viscoelastic liquid

Stabilizing the MAPbI3 perovksite via the in-situ formed lead sulfide layer for efficient and robust solar cells

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Journal of Energy Chemistry 2020年第8期29卷 62-65,I0003页

作者： lujia Xie Taiyang Zhang Yixin Zhao China-UK Low Carbon College Shanghai Jiao Tong University3 Yinlian Rd.Shanghai 201306China School of Environmental Science and Engineering Shanghai Jiao Tong University800 Dongchuan Rd.Shanghai 200240China

Surface passivation via post-treatment with organic reagents is a popular strategy to improve the stability and efficiency of perovskite solar cell. However, organic passivation still suffers from the weak bonding between organic chemicals and perovskite layers. Here we reported a facile inorganic layer passivating method containing strong Pb–S bonding by using ammonium sulfide treatment. A compact PbS_x layer was in-situ formed on the top surface of the perovskite film, which could passivate and protect the perovskite surface to enhance the performance and stability. Our novel inorganic passivation layer strategy demonstrates great potential for the development of high efficiency hybrid and robust perovskite optoelectronics.

关键词： Inorganic surface passivation MAPbI3 Ammonium sulfide Perovskite solar cells

Heat Transfer Characteristics of the Microfluidic Biomimetic Chameleon Skin with Active Thermal Camouflage

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Journal of Bionic Engineering 2023年第2期20卷 722-733页

作者： lujia Li Huanhuan Li Jian Cao Songjing Li Department of Fluid Control and Automation Harbin Institute of TechnologyHarbin150001China

Natural organisms have different techniques to avoid enemies,such as chameleon skin with innate camouflage ability to change with the surrounding *** by this,a microfluidic biomimetic chameleon skin based on infrared(IR)information processing is proposed for active thermal camouflage in a dynamic infrared *** circulation in microcavities distributed under the skin is controlled by a thermal camouflage *** structure and working principle of the biomimetic skin are introduced,and the thermal camouflage system is established and tested to explore the heat transfer characteristics between the skin and the *** mechanism of collecting the background infrared information and regulating the skin temperature through the control signal generated by the infrared information processing system is ***,the dynamic thermal response of the skin is tested when transitioning between different temperature backgrounds,modeling the ambient temperature of the sand,woodland and lakes where chameleons *** performance of the skin is evaluated by measuring the camouflage responding time of the skin to an external heat *** results show that the chameleon biomimetic skin is naturally transitioned and matched by infrared information processing and *** limitation that the conventional thermal camouflage technology cannot adapt to the dynamic combat environment is overcome and the weaknesses of a small camouflage band range and a single form of camouflage are resolved in this study,thus effectively improving the target’s survivability in combat.

关键词： Biomimetic skin Thermal camouflage Microfluidics Infrared Chameleon

Loading Localization by Small-Diameter Optical Fiber Sensors

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第2期35卷 275-281页

作者： Liu Rongmei Zhu lujia Lu Jiyun Liang Dakai College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics College of Civil Aviation Nanjing University of Aeronautics and Astronautics

Structural health monitoring(SHM)in service has attracted increasing attention for *** localization on a structure is studied *** algorithms,i.e.,support vector machine(SVM)method and back propagation neural network(BPNN)algorithm,are proposed to identify the loading positions *** feasibility of the suggested methods is evaluated through an experimental program on a carbon fiber reinforced plastic *** experimental tests involve in application of four optical fiber-based sensors for strain measurement at discrete *** sensors are specially designed fiber Bragg grating(FBG)in small *** small-diameter FBG sensors are arrayed in 2-D on the laminate *** testing results indicate that the loading position could be detected by the proposed *** SVM method,the 2-D FBG sensors can approximate the loading location with maximum error less than 14 ***,the maximum localization error could be limited to about 1 mm by applying the BPNN *** is mainly because the convergence conditions(mean square error)can be set in advance,while SVM cannot.

关键词： small diameter optical fiber sensor structural health monitoring loading localization back propagation neural network support vector machine

A Camouflaged Film Imitating the Chameleon Skin with Color-Changing Microfluidic Systems Based on the Color Information Identification of Background

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Journal of Bionic Engineering 2021年第5期18卷 1137-1146页

作者： Huanhuan Li Tianhang Yang lujia Li Sining Lv Songjing Li Department of Fluid Control and Automation Harbin Institute of TechnologyScience ParkNo.2Yikuang Street Nangang DistrictBox 3040Harbin 150001China

To adapt to a complex and variable environment,self-adaptive camouflage technology is becoming more and more important in all kinds of military applications by overcoming the weakness of the static *** nature,the chameleon can achieve self-adaptive camouflage by changing its skin color in real time with the change of the background *** imitate the chameleon skin,a camouflaged film controlled by a color-changing microfluidic system is proposed in this *** film with microfluidic channels fabricated by soft materials can achieve dynamic cloaking and camouflage by circulating color liquids through channels inside the *** sensing and collecting environmental color change information,the control signal of the microfluidic system can be adjusted in real time to imitate chameleon *** microstructure of the film and the working principle of the microfluidic color-changing system are *** mechanism to generate the control signal by information processing of background colors is illustrated.“Canny”double-threshold edge detection algorithm and color similarity are used to analyze and evaluate the *** tested results show that camouflaged images have a relatively high compatibility with environmental backgrounds and the dynamic cloaking eff ect can be achieved.

关键词： Microfluidic Self-adaptive Camouflage Chameleon Bionic skin

Vibration spectroscopic technique for species identification based on lipid characteristics

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 255-268页

作者： Gao Fei Han lujia Liu Xian Biomass and Bioresource Utilization Laboratory College of EngineeringChina Agricultural UniversityBeijing 100083China

Due to the widespread of adulteration of lipid in food and feed industry,the quality and safety of lipid are of public concern ***,the current article presents theory and mechanism of species identification of lipid by spectroscopic *** of near-infrared reflectance spectroscopy(NIR),Fourier transform infrared spectroscopy(FT-IR),and Fourier transform Raman spectroscopy(FT-Raman)applied to species identification of lipid were *** addition,the relationship between lipid and spectroscopy as well as the recent advances of species identification of lipid were *** showed that FT-IR and FT-Raman spectroscopies possessed more efficient potential for species identification of ***,prospects for future lipid detection and relative practical application,and combination of spectroscopy and other technique were further discussed.

关键词： feedstuff fatty acid NIR FT-IR FT-Raman spectroscopy

Transient thermal network model for train-induced wind cooling dry-type on-board traction transformer in electric multiple units

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High Voltage 2023年第3期8卷 514-526页

作者： Lijun Zhou Shuai Yuan Qiuyue Zhu Dongyang Wang lujia Wang School of Electrical Engineering Southwest Jiaotong UniversityChengduChina School of Electrical and Power Engineering China University of Mining and TechnologyXuzhouChina

Thermal characteristic is one of the key performances of dry-type on-board traction transformer(D-OBTT),which directly affects the operation safety of the new generation electric multiple ***,due to the particularity of train-induced wind cooling mode of D-OBTT,the existing efficient thermal modelling methods cannot be used under fluctuating air velocity and load.A time-saving transient thermal model for D-OBTT is ***,the framework of the transient thermal network model(TTNM)is proposed considering the coexistence of non-fully and fully developed state of the train-induced wind and the addition heat flow in the solid ***,a novel formula for calculating the length of non-fully developed section considering the geometric dimensions and heat flux density is proposed based on computational fluid dynamics(CFD)parametric sweeps for the first *** accuracy of TTNM is validated by a D-OBTT experimental setup,and the time consumption is significantly reduced compared with CFD.

关键词： traction network thermal