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A nano-sheet graphene-based enhanced thermal radiation composite for passive heat dissipation from vehicle batteries

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Nano Materials Science 2024年第4期6卷 443-455页

作者： Ji-Xiang Wang Christopher Salmean Jiaxin Li Chaojie Lei jun Li Mingliang Zhong Bo Qi Yufeng mao Hebei Key Laboratory of Man-machine Environmental Thermal Control Technology and Equipment Hebei Vocational University of Technology and Engineering College of Electrical Energy and Power EngineeringYangzhou University Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Taizhou Wavexploration Energy Ltd. Department of Electrical and Computer Engineering University of Toronto China Academy of Launch Vehicle Technology Beijing Sino-Spark Technology Co. Ltd. School of Environmental Science and Engineering Suzhou University of Science and Technology Institute of Optics and Electronics Chinese Academy of Sciences National Key Laboratory of Optical Field Manipulation Science and Technology Chinese Academy of Sciences

In response to thermal runaway(TR) of electric vehicles, recent attention has been focused on mitigation strategies such as efficient heat dredging in battery thermal management. Thermal management with particular focus on battery cooling has been becoming increasingly significant. TR usually happened when an electric vehicle is unpowered and charged. In this state, traditional active battery cooling schemes are disabled, which can easily lead to dangerous incidents due to loss of cooling ability, and advanced passive cooling strategies are therefore gaining importance. Herein, we developed an enhanced thermal radiation material, consisting of ～1 μm thick multilayered nano-sheet graphene film coated upon the heat dissipation surface, thereby enhancing thermal radiation in the nanoscale. The surface was characterized on the nanoscale, and tested in a battery-cooling *** found that the graphene-based coating's spectral emissivity is between 91 % and 95 % in the mid-infrared region, and thermal experiments consequently illustrated that graphene-based radiative cooling yielded up to15.1 % temperature reduction when compared to the uncoated analogue. Using the novel graphene surface to augment a heat pipe, the temperature reduction can be further enlarged to 25.6 %. The new material may contribute to transportation safety, global warming mitigation and carbon neutralization.

关键词： Battery thermal management Nano-sheet graphene Functional material Passive cooling Thermal radiation

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Facile synthesis of nanosized spinel high entropy oxide (FeCoNiCrMn)_(3)O_(4) for efficient oxygen evolution reaction

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Journal of Materiomics 2024年第4期10卷 919-927页

作者： Bomin Feng jun Chen Yifei Yang mao Yang Hongbing Wang Changyin Zhong Xiaochong Zhao Yunxi Yao Institute of Materials China Academy of Engineering PhysicsJiangyou621908China

The sluggish reaction kinetics of oxygen evolution reaction(OER)and the high price of noble metal catalysts hinder the wide application of water electrolysis for hydrogen ***-entropy oxides(HEOs)with multi-components and high entropy stabilized structures have attracted great research interests due to their efficient and durable performance in electrolytic water splitting ***,the development of efficient HEO electrocatalysts are often hindered by the limited surface exposed active sites because high temperature is usually required to form a high entropy stabilized ***,a flaky high-entropy oxide with a spinel structure,(FeCoNiCrMn)_(3)O_(4),was synthesized by using the sacrificial layered carbon template in situ prepared by the volatile reaction between ammonium sulfate and molten ***-resolution TEM results show the as-prepared(FeCoNiCrMn)_(3)O_(4) flakes are composed of nanosized HEO *** nanosized(FeCoNiCrMn)_(3)O_(4) HEO electrocatalysts exhibit excellent OER activity,with an overpotential of 239 mV at 10 mA/cm^(2) and a Tafel slope of 52.4 mV/*** electrocatalyst has excellent *** at a high current density of 100 mA/cm^(2),the activity remains unchanged during the stability test for 24 *** results here shed a new light in the design and fabrication of highly efficient HEO electrocatalysts.

关键词： High entropy oxides Oxygen evolution reaction Spinel oxide Millard reaction Electrocatalyst

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A novel electro-Fenton hybrid system for enhancing the interception of volatile organic compounds in membrane distillation desalination

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Journal of Environmental Sciences 2024年第4期138卷 189-199页

作者： Hongxin Liu Kuiling Li Kunpeng Wang Zhiyong Wang Zimou Liu Sichao Zhu dan Qu Yu Zhang jun Wang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua UniversityBeijing 100084China School of Chemical and Environmental Engineering Beijing CampusChina University of Mining and TechnologyBeijing 100083China Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

Membrane distillation(MD)is a promising alternative desalination technology,but the hydrophobic membrane cannot intercept volatile organic compounds(VOCs),resulting in aggravation in the quality of *** term of this,electro-Fenton(EF)was coupled with sweeping gas membrane distillation(SGMD)in a more efficient way to construct an advanced oxidation barrier at the gas-liquid interface,so that the VOCs could be trapped in this layer to guarantee the water quality of the *** the so-called EF-MD process,an interfacial interception barrier containing hydroxyl radical formed on the hydrophobic membrane *** contributed to the high phenol rejection of 90.2% with the permeate phenol concentration lower than 1.50 mg/*** interceptions can be achieved in a wide temperature range,even though the permeate flux of phenol was also *** EF-MD system was robust to high salinity and could electrochemically regenerate ferrous ions,which endowed the long-term stability of the *** novel EF-MD configuration proposed a valuable strategy to intercept VOCs in MD and will broaden the application of MD in hypersaline wastewater treatment.

关键词： Membrane distillation VOC interception Interfacial oxidation Electro-Fenton Hypersaline wastewater

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Stretchable on-skin touchless screen sensor enabled by ionic hydrogel

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Nano Research 2024年第5期17卷 4462-4470页

作者： Tianxing Feng dan Ling Chaoyue Li Wentao Zheng Shichuan Zhang Chang Li Artem Emel’yanov Alexander S.Pozdnyakov Lijun Lu Yanchao mao Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China A.E.Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of SciencesIrkutsk 664033Russian Federation

Screen sensors are the most commonly used human-machine interfaces in our everyday life,which have been extensively applied in personal electronics like *** screen sensors are attracting growing interest due to their distinct advantages of high interaction freedom,comfortability,and hand ***,the material compositions of current touchless screen sensors are rigid and fragile,hardly meeting the needs of wearable and stretchable on-skin electronics ***,these touchless screen sensors are also restricted by high power consumption,limited gesture types of recognition,and the requirement of light ***,we report a stretchable on-skin touchless screen sensor(OTSS)enabled by an ionic hydrogel-based triboelectric nanogenerator(TENG).Compared with current touchless screen sensors,the OTSS is stretchable,self-powered,and competent to recognize diverse gestures by making use of charges naturally carried on fingers without the need of sufficient light *** on-skin noncontact screen operating system is further demonstrated on the basis of the OTSS,which could unlock a cellphone interface in touchless operation mode on the human *** work for the first time introduces the on-skin touchless concept to screen sensors and offers a direction to develop new-generation screen sensors for future cellphones and personal electronics.

关键词： human-machine interface stretchable ionic hydrogel triboelectric nanogenerator self-powered sensor

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Copper-coated Porous Polyimide as Ultralight and Safe Current Collectors for Advanced LIBs

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Chinese Journal of Polymer Science 2024年第4期42卷 521-531页

作者： Cun-Sheng Liu jun-Qi Hu Ting-Ting mao Song-Yi Liao Ru-Ming Feng Yi-Dong Liu Yong-Gang Min School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China College of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhou510225China Shanwei Branch of Advanced Energy Science and Technology Guangdong Laboratory Shanwei516600China

Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of commercial copper foil(~8.9 g·cm^(-3)) limits the increase of energy density of battery. Here, copper-coated porous polyimide(Cu@PPI) was prepared by vacuum evaporation as collector for the graphite anode. The sandwich structure connects the copper metal on both sides of the collector with excellent electrical conductivity. Compared to commercial Cu foil, Cu@PPI has lighter mass(≤3.9 mg for disc of 12 mm diameter versus 9.9 mg of ~10 μm Cu foil) and lower volume density(≤3.3 g·cm^(-3)). In addition, the porous structure allows of better adhesion of reactive substances and electrochemical properties than pure Cu foils. It is estimated that the energy density of Cu@PPI should be much higher than that of Cu foil. This strategy should be applicable for other current collectors.

关键词： Copper-coated Vacuum evaporation Porous polyimide(PPI) Current collector(CC) LIBs

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Characteristics and source apportionment of ambient volatile organic compounds and ozone generation sensitivity in urban Jiaozuo,China

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Journal of Environmental Sciences 2024年第4期138卷 607-625页

作者： Pengzhao Li Chun Chen dan Liu Jie Lian Wei Li Chuanyi Fan Liangyu Yan Yue Gao Miao Wang Hang Liu Xiaole Pan Jing mao State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Environmental Monitoring Technology Henan Ecological Environment Monitoring and Safety CenterZhengzhou 450046China Jiaozuo Ecological Environment Monitoring Center of Henan Province Jiaozuo 454003China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

In recent years,many cities have taken measures to reduce volatile organic compounds(VOCs),an important precursor of ozone(O_(3)),to alleviate O_(3) pollution in China.116 VOC species were measured by online and offline methods in the urban area of Jiaozuo from May to October in 2021 to analyze the compositional *** sources were analyzed by a positive matrix factorization(PMF)model,and the sensitivity of ozone generation was determined by ozone isopleth plotting research(OZIPR)*** results showed that the average volume concentration of total VOCs was 30.54 ppbv and showed a bimodal feature due to the rush-hour traffic in the morning and at *** most dominant VOC groups were oxygenated VOCs(OVOCs,29.3%)and alkanes(26.7%),and the most abundant VOC species were acetone and ***,based on the maximum incremental reactivity(MIR)method,the major VOC groups in terms of ozone formation potential(OFP)contribution were OVOCs(68.09μg/m^(3),31.5%),aromatics(62.90μg/m^(3),29.1%)and alkene/alkynes(54.90μg/m^(3),25.4%).This indicates that the control of OVOCs,aromatics and alkene/alkynes should take *** sources of VOCs were quantified by PMF,including fixed sources of fossil fuel combustion(27.8%),industrial processes(25.9%),vehicle exhaust(19.7%),natural and secondary formation(13.9%)and solvent usage(12.7%).The empirical kinetic modeling approach(EKMA)curve obtained by OZIPR on O_(3) exceedance days indicated that the O_(3) sensitivity varied in different *** results provide theoretical support for O_(3) pollution prevention and control in Jiaozuo.

关键词： Volatile organic compounds(VOCs) Online and offline measurement Ozone formation potential(OFP) Positive matrix factorization(PMF) Ozone isopleth plotting research(OZIPR) Jiaozuo

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Nanomaterial‑Based Repurposing of Macrophage Metabolism and Its Applications

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Nano-Micro Letters 2024年第11期16卷 494-528页

作者： Tingting Meng danfeng He Zhuolei Han Rong Shi Yuhan Wang Bibo Ren Cheng Zhang Zhengwei mao Gaoxing Luo jun Den Institute of Burn Research Southwest HospitalState Key Laboratory of Trauma and Chemical PoisoningArmy Medical UniversityChongqing 400038People’s Republic of China Department of Breast Surgery Gansu Provincial HospitalLanzhouGansu 730030People’s Republic of China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Macrophage immunotherapy represents an emerging therapeutic approach aimed at modulating the immune response to alleviate disease ***(NMs)have been engineered to monitor macrophage metabolism,enabling the evaluation of disease progression and the replication of intricate physiological signal *** achieve this either directly or by delivering regulatory signals,thereby mapping phenotype to effector functions through metabolic repurposing to customize macrophage fate for ***,a comprehensive summary regarding NM-mediated macrophage visualization and coordinated metabolic rewiring to maintain phenotypic equilibrium is currently *** review aims to address this gap by outlining recent advancements in NM-based metabolic *** initially explore the relationship between metabolism,polarization,and disease,before delving into recent NM innovations that visualize macrophage activity to elucidate disease onset and fine-tune its fate through metabolic remodeling for macrophage-centered ***,we discuss the prospects and challenges of NM-mediated metabolic immunotherapy,aiming to accelerate clinical *** anticipate that this review will serve as a valuable reference for researchers seeking to leverage novel metabolic intervention-matched immunomodulators in macrophages or other fields of immune engineering.

关键词： Immunomodulatory nanomaterial Macrophage polarization Macrophage metabolic reprogramming Immune engineering

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Optimization Design of the Multi-Layer Cross-Sectional Layout of An Umbilical Based on the GA-GLM

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China Ocean Engineering 2024年第2期38卷 247-254页

作者： YANG Zhi-xun YIN Xu FAN Zhi-rui YAN jun LU Yu-cheng SU Qi mao Yandong WANG Hua-lin Institute of marine machinery College of Mechanical and Electrical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDepartment of Engineering MechanicsDalian University of TechnologyDalian 116024China Ningbo Institube of Dalian University of Technology Ningbo 315040China

Marine umbilical is one of the key equipment for subsea oil and gas exploitation,which is usually integrated by a great number of different functional components with *** layout of these components directly affects manufacturing,operation and storage performances of the *** the multi-layer cross-sectional layout design of the umbilical,a quantifiable multi-objective optimization model is established according to the operation and storage *** the manufacturing factors,the multi-layering strategy based on contact point identification is introduced for a great number of functional ***,the GA-GLM global optimization algorithm is proposed combining the genetic algorithm and the generalized multiplier method,and the selection operator of the genetic algorithm is improved based on the steepest descent *** algorithm is used to find the optimal solution in the global space,which can converge from any initial layout to the feasible layout *** feasible layout solution is taken as the initial value of the generalized multiplier method for fast and accurate ***,taking umbilicals with a great number of components as examples,the results show that the cross-sectional performance of the umbilical obtained by optimization algorithm is better and the solution efficiency is ***,the multi-layering strategy is effective and *** design method proposed in this paper can quickly obtain the optimal multi-layer cross-sectional layout,which replaces the manual design,and provides useful reference and guidance for the umbilical industry.

关键词： umbilical cross-sectional layout multi-layers GA-GLM optimization

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Clinical heterogeneity and five phenotypes identified in pediatric Behçet’s syndrome: a cohort study from Shanghai Behçet’s syndrome database

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World Journal of Pediatrics 2024年第8期20卷 801-808页

作者： dan Hu Chun-Hui She Hua-Fang Bao jun Zou Jian-Fei Cai Jing‑Fen Ye Yan Shen Hai‑Fen Ma dan Luo Jian-Long Guan Department of Rheumatology and Immunology Huadong Hospital Affiliated to Fudan University221 Yan’an West Road200040ShanghaiChina

Objectives Behçet’s syndrome(BS)is a rare disease of unknown etiology,with limited reports especially in pediatric *** clinical characteristics and phenotypes of pediatric BS as a highly heterogeneous variable vessel vasculitis were investigated in this *** A cross-sectional study was conducted to compare clinical variables and descriptive characteristics of BS by age of onset and *** analysis was then performed to identify the phenotypes of pediatric *** A total of 2082 BS patients were included in this study,1834 adults and 248 *** with adult-onset BS,pediatric BS had a higher incidence of folliculitis[relative risks(RR)and 95%confidence interval(CI)1.3(1.0–1.5)],uveitis of the left eye[RR and 95%CI 2.3(1.0–5.0)],intestinal ulcer complications[RR and 95%CI 2.1(1.1–4.2)],pericarditis[RR and 95%CI 2.5(1.0–6.2)],and psychiatric disorders[RR and 95%CI 2.8(1.0–7.9)],while the incidence of thrombocytopenia was lower[RR 0.2(0.1–1.0)].Among pediatric BS,females had more genital ulcers,while males were more likely to have skin lesions,panuveitis,vascular involvement,venous lesions,cardiac involvement,and aortic *** analysis classified pediatric BS into five clusters(C1–C5):C1(n=61,24.6%)showed gastrointestinal(GI)involvement;C2(n=44,17.7%)was the central nervous system(CNS)type where 23 cases overlapped joint involvement;in C3(n=35,14.1%),all patients presented with arthritis or arthralgia;all patients in C4(n=29,11.7%)manifested ocular involvement,with a few patients overlapping with GI involvement or joint damage;C5(n=79,31.9%)was the mucocutaneous type,presenting both oral ulcers,genital ulcers,and skin *** The clinical features of pediatric and adult BS differ *** and female pediatric BS also have a distinct *** phenotypes including GI,CNS,joint,ocular,and mucocutaneous types were identified for pediatric BS.

关键词： Behget's syndrome Clinical manifestation Cluster analysis-Pediatric Phenotype

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Binder-induced ultrafast ■-intercalation toward a high-voltage,high-power and long-cycling zinc–graphite dual-ion battery

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Rare Metals 2024年第10期43卷 5017-5029页

作者： Gen Li Xiao-jun Shi Ting Dong Qian Yu Zhi-Fei mao Xin-Hua Liu Rui Wang Bei-Bei He jun Jin Yan-Sheng Gong Huan-Wen Wang Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Material Science and ChemistryChina University of Geosciences College of Resources and Environment South-Central Minzu University School of Transportation Science and Engineering Beihang University

Metallic zinc is an ideal anode material owing to its high theoretical capacity (819 mAh·g-1),ecofriendliness,low cost and high safety,which have driven fast development of Zn-ion batteries （ZIBs）.However,the practical application of current ZIBs is significantly restricted by irregular dendrite growth of zinc anode and the low working voltage （usually<2 V） of cathode ***,we report a high-voltage Zn-based dualion battery （DIB）,which is constructed by a graphite cathode,a Zn anode,and 3 M LiPF6in the ethyl methyl carbonate （EMC） *** the corrosion interaction of Li+ions,Zn2+can be easily dissolved from Zn anode into the electrolyte to enable dendrite-free Zn2+plating/stripping at the ***,an aqueous carboxymethyl cellulose （CMC） binder is employed to generate a robust cathode electrolyte interface （CEI） layer on the graphite cathode,which renders ultrafast PF6--de-/intercalation into *** resultant Zn–graphite DIB operates stably at a high cut off voltage of 3.2 V,corresponding to an average output voltage of 2.2 *** 9000cycles at 5C,the high capacity retention of 95.9% can be achieved with～100%Coulomb *** on the mass of cathode material,our Zn–graphite battery exhibits ultrafast rate capability （60 C,a discharge time of 44 s） and high energy/power densities (208 Wh·kg-1at 214 W·kg-1;142 Wh·kg-1at 8692 W·kg-1),which holds great promise for large-scale energy storage.

关键词： Binder Graphite High-voltage PF6−-de-/intercalation Zn-ion batteries

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