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Multifunctional photon conversion materials for enhancing silicon solar cells

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Light(Science & Applications) 2024年第4期13卷 598-601页

作者： Yiyan Zhang Guanying Chen MIIT Key laboratory of Critical materials technology for new energy Conversion and storage School of Chemistry and Chemical EngineeringHarbin Institute of Technology150001 HarbinChina

A type of multifunctional erbium(Er^(3+))and ytterbium(Yb^(3+))codoped NaY(WO4)2 phosphors,with simultaneous photon upconversion,photon quantum cutting,and luminescence ratiometric temperature sensing abilities,have b... 详细信息

关键词： photon luminescence quantum

A review of membrane distillation enhancement via thermal management and molecular transport through nanomaterial-based membranes

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Science China(Technological Sciences) 2023年第6期66卷 1662-1682页

作者： HUANG Jian HE YuRong HUI SiYu WANG MingHao TANG TianQi School of energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China Heilongjiang Key laboratory of new energy storage materials and Processes Harbin 150001China

Low-energy,high-efficiency desalination techniques are important because of the critical water-energy nexus.In particular,membrane distillation has great potential to harness low-grade and renewable energy sources.Composite membranes using micro-and nanomaterials have new capabilities and characteristics.This review focuses on the most recent developments and potential capabilities in membrane distillation systems from the perspective of nanomaterial enhancements,thermal management,and water transport.Self-heating nanomaterial membrane distillations using permeable composite membranes with significant photothermal or Joule-heating conversion capabilities enable macroscale thermal management and mitigate temperature polarization effects.Modifying the membrane structure and its interaction with water can accelerate water transport and evaporation,improving distillation at the microscopic level.This is expected to provide directions for the fabrication and manipulation of novel micro-and nanocomposite membranes for distillation processes at various levels,and enhance their applications.

关键词： membrane distillation nanomaterial enhancement self-heating thermal management molecule motion

Multiphysics numerical investigation of photothermal self-driving characteristics of SiO_(2)@Au Janus microparticles for drug delivery

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Particuology 2023年第5期76卷 165-175页

作者： Ying Liu Xinzhi Wang Yurong He School of energy Science and Engineering Harbin Institute of TechnologyHarbin150001China Heilongjiang Key laboratory of new energy storage materials and Processes School of Energy Science and EngineeringHarbin Institute of TechnologyHarbin50001China

The photothermal self-driving process of Janus microparticles has wide application prospects in the fields of biomedicine.Since silica and gold have good biocompatibility and high photothermal conversion efficiency,the SiO_(2)@Au Janus microparticles are widely used as drug carriers.Based on the multiphysics coupling method,the photothermal self-driving process of SiO_(2)@Au Janus microparticles was investi-gated,wherein the substrate was SiO_(2)particles and one side of the particles was coated with gold film.Under a continuous wave laser with irradiation of 20 W/cm^(2),the distance covered by the Janus particles was increased by increasing the thickness of the gold film and reducing the size of the SiO_(2)particles;the self-driving characteristics of the Janus particles were controlled substantially by increasing the intensity of the incident laser.Based on the simulation results,the thermophoretic motion and Brownian motion of particles can be measured by comparing the absolute values of the thermophoretic force impulse,Brownian force impulse,and drag force impulse.The Brownian force acting on Janus microparticles under low laser power cannot be ignored.Furthermore,the minimum laser power required for Janus particles to overcome Brownian motion was calculated.The results can effectively guide the design of Janus particles in biomedicine and systematically analyze the mechanism of particle thermophoretic motion during drug delivery.

关键词： Janus microparticles Photothermal self-driving Multiphysics coupling method Brownian

Competitive Redox Chemistries in Vanadium Niobium Oxide for Ultrafast and Durable Lithium storage

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纳微快报:英文版 2023年第11期15卷 90-103页

作者： Xiaobo Ding Jianhao Lin Huiying Huang Bote Zhao Xunhui Xiong School of Environment and energy Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640People’s Republic of China

Niobium pentoxide(Nb_(2)O_(5))anodes have gained increasing attentions for high-power lithium-ion batteries owing to the outstanding rate capability and high safety.However,Nb2O5 anode suffers poor cycle stability even after modified and the unrevealed mechanisms have restricted the practical applications.Herein,the over-reduction of Nb5+has been demonstrated to be the critical reason for the capacity loss for the first time.Besides,an effective competitive redox strategy has been developed to solve the rapid capacity decay of Nb_(2)O_(5),which can be achieved by the incorporation of vanadium to form a new rutile VNbO_(4)anode.The highly reversible V^(3+)/V^(2+)redox couple in VNbO_(4)can effectively inhibit the over-reduction of Nb^(5+).Besides,the electron migration from V^(3+)to Nb5+can greatly increase the intrinsic electronic conductivity for VNbO4.As a result,VNbO4 anode delivers a high capacity of 206.1 mAh g^(−1)at 0.1 A g^(−1),as well as remarkable cycle performance with a retention of 93.4%after 2000 cycles at 1.0 A g^(−1).In addition,the assembled lithium-ion capacitor demonstrates a high energy density of 44 Wh kg^(−1)at 5.8 kW kg^(−1).In summary,our work provides a new insight into the design of ultra-fast and durable anodes.

关键词： Niobium pentoxide Capacity decay Over-reduction Vanadium niobium oxide Lithium-ion capacitor

Multi-Scale Numerical Simulation of Flow,Heat and Mass Transfer Behaviors in Dense Gas-Solid Flows:A Brief Review

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Journal of Thermal Science 2022年第3期31卷 607-633页

作者： HE Yurong REN Anxing TANG Tianqi WANG Tianyu School of energy Science and Engineering Harbin Institute of TechnologyHarbin150001China Heilongjiang Key laboratory of new energy storage materials and Processes School of Energy Science and EngineeringHarbin Institute of TechnologyHarbin150001China

Dense gas-solid flows are very common in actual production and industrial fields,so it is significant to understand their hydrodynamic characteristics and heat and mass transfer behaviors.This article provides a brief review of multi-scale numerical simulation of flow,heat and mass transfer behaviors in dense gas-solid flows.It describes multiscale models(direct numerical simulation,discrete particle model,and two-fluid model)and the results of related research.Finally,it discusses possible future developments in research on the flow,heat and mass transfer characteristics of dense gas-solid two-phase flows.

关键词： gas-solid flows multi-scale modeling direct numerical simulation discrete particle model two-fluid model heat and mass transfer

Proliferation-mediated asymmetric nanoencapsulation of singlecell and motility differentiation

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Science China(Technological Sciences) 2023年第7期66卷 2134-2146页

作者： WANG ShengLiang XU ZhiJun CHEN HaiXu WANG XiaoLiang LIN Song WANG Lei LIU XiaoMan HUANG Xin MIIT Key laboratory of Critical materials technology for new energy Conversion and storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The biointerface engineering of living cells by creating an abiotic shell has important implications for endowing cells with exogenous properties with improved cellular behavior,which then boosts the development of the emerging field of living cell hybrid materials.Herein,we develop a way to perform active nanoencapsulation of single cell,which then endows the encapsulated cells with motion ability that they do not inherently possess.The emerging motion characteristics of the encapsulated cells could be self-regulated in terms of both the motion velocity and orbits by different proliferation modes.Accordingly,by taking advantage of the emergence of differentiated moving abilities,we achieve the self-sorting between mother cells and daughter cells in a proliferated Saccharomyces cerevisiae cell community.Therefore,it is anticipated that our highlighted study could not only serve as a new technique in the field of single-cell biology analysis and sorting such as in studying the aging process in Saccharomyces cerevisiae,but also open up opportunities to manipulate cell functionality by creating biohybrid materials to fill the gap between biological systems and engineering abiotic materials.

关键词： biointerface engineering micromotors self-propulsion self-sorting urease

Intrinsic Self-Healing Chemistry for Next-Generation Flexible energy storage Devices

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Nano-Micro Letters 2023年第7期15卷 136-164页

作者： Xin Wan Tiansheng Mu Geping Yin MIIT Key laboratory of Critical materials technology for new energy Conversion and storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China

The booming wearable/portable electronic devices industry has stimulated the progress of supporting flexible energy storage devices.Excellent performance of flexible devices not only requires the component units of each device to maintain the original performance under external forces,but also demands the overall device to be flexible in response to external fields.However,flexible energy storage devices inevitably occur mechanical damages(extrusion,impact,vibration)/electrical damages(overcharge,over-discharge,external short circuit)during longterm complex deformation conditions,causing serious performance degradation and safety risks.Inspired by the healing phenomenon of nature,endowing energy storage devices with self-healing capability has become a promising strategy to effectively improve the durability and functionality of devices.Herein,this review systematically summarizes the latest progress in intrinsic self-healing chemistry for energy storage devices.Firstly,the main intrinsic self-healing mechanism is introduced.Then,the research situation of electrodes,electrolytes,artificial interface layers and integrated devices based on intrinsic self-healing and advanced characterization technology is reviewed.Finally,the current challenges and perspective are provided.We believe this critical review will contribute to the development of intrinsic self-healing chemistry in the flexible energy storage field.

关键词： Flexible energy storage Intrinsic self-healing chemistry Lithium-ion battery Supercapacitor Advanced characterizations

Advances in core–shell engineering of carbon-based composites for electromagnetic wave absorption

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Nano Research 2022年第10期15卷 9410-9439页

作者： Lixue Gai Honghong Zhao Fengyuan Wang Pan Wang Yonglei Liu Xijiang Han Yunchen Du MIIT Key laboratory of Critical materials technology for new energy Conversion and storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

Electromagnetic(EM)absorption is paving the way to overcome the challenges related to conventional shielding strategy against EM pollution through sustainable energy dissipation.As characteristic functional media that can interact with electric or magnetic field branch,EM wave absorption materials(EWAMs)have received extensive attention and realized considerable development in the past two decades,where carbon-based composites are always considered as promising candidates for high-performance EMAWs due to their synergetic loss mechanism as well as diversified composition and microstructure design.Recent progress indicates that there is more and more interest in the fabrication of carbon-based composites with unique core–shell configuration.On one hand,core–shell configuration usually ensures good chemical homogeneity of final products and provides some positive protections for the components with susceptibility to corrosion,on the other hand,it creates enough heterogeneous interfaces between different EM components,which may bring enhanced polarization effect and intensify the consumption of EM energy.In this review,we firstly introduce EM wave absorption theory,and then highlight the advances of core–shell engineering in carbonbased composites in terms of built-in carbon cores and built-out carbon shells.Moreover,we also show some special core–shell carbon-based composites,including carbon/carbon composites,assembled composites,and decorated composites.After analyzing EM absorption performance of some representative composites,we further propose some challenges and perspectives on the development of core–shell carbon-based composites.

关键词： carbon-based composites core-shell configuration synergetic effect interfacial polarization electromagnetic(EM)absorption performance

Expanded mesocarbon microbead cathode for sodium-based dual-ion battery with superior specific capacity and long-term cycling stability

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Rare Metals 2023年第5期42卷 1545-1556页

作者： Yu-Jia Wang Xue-Wen Yu Peng Zhang Zheng-Jie Wang Lei Yan Liang He Ze-Kai Wang Zhi-Qiang Shi Tianjin Key laboratory of Advanced Fibers and energy storage School of Materials Science and EngineeringTiangong UniversityTianjin300387China College of new energy Ningbo University of TechnologyNingbo315211China

Dual-ion batteries(DIBs)have attracted tremendous attention owing to their high operating voltage and are considered promising candidates for low-cost clean energy storage devices.However,the decomposition of electrolytes and collapse of the cathode structure may lead to low Coulombic efficiency(CE)and low cycling stability of DIBs.Wide-layered electrode materials can accommodate the intercalation/deintercalation of large anions,which is believed to overcome these issues.Herein,expanded mesocarbon microbeads(200HRO-MCMB)possessing an enlarged interlayer spacing(0.405 nm)were prepared via modified Hummers and subcritical hydrothermal reduction methods.After the indispensable electrochemical activation,200HRO-MCMB(hydrothermal reduction at 200℃)exhibited a high specific capacity(120 mAh·g^(-1)at50 mA·g^(-1))when used as a cathode for a sodium-based DIB,and the CE significantly improved within the 2.0-4.5 V voltage range.Additionally,the cycling stability exceeded over 600 cycles.Remarkably,this cathode possessed enlarged interlayers that decreased the barrier of PF6^(-)transport,and the battery storage mechanism corresponded to a transitioning state between double-layer capacitance and Faradaic intercalation.Undoubtedly,this work will expand the scope of the practical application of low-cost sodium-based DIBs.

关键词： Expanded mesocarbon microbeads Sodiumbased dual-ion batteries Interlayer spacing