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Boosting fast interfacial Li^(+)transport in solid-state Li metal batteries via ultrathin Al buffer layer

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Nano research 2023年第5期16卷 6825-6832页

作者： Shengnan Zhang Qing Sun Guangmei Hou Jun Cheng Linna Dai Jianwei Li Lijie Ci Key laboratory for liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinan 250061China School of Light Industry and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China State Key lab of Advanced Welding and Joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China School of Science Hubei University of TechnologyWuhan 430068China University of Health and Rehabilitation Sciences Qingdao266071China

Na superionic conductor(NASICON)-type Li_(1.5)Al_(0.5)Ge_(0.5)P_(3)O_(12)(LAGP)solid state electrolytes(SSEs)have attracted significant interests thanks to the prominent ionic conductivity(>10^(–4)S·cm^(–1))at room temperature and superb stability in ***,its application has been hindered by the lithium dendrites and the intrinsic interfacial instability of LAGP towards metallic Li,***,by magnetron sputtering(MS),an ultrathin Al film is deposited on the surface of the LAGP pellet(Al-LAGP).By in-situ alloying reaction,the spontaneously formed LiAl buffer layer inhibits the side reaction between LAGP SSEs and Li metal,induces the uniform distribution of interfacial electric field as *** functional theory(DFT)calculations demonstrate that the LiAl alloy surface promotes the diffusion of lithium atoms due to the lower energy barrier,thereby inhibiting the formation of lithium ***,the Li/Al-LAGP-Al/Li symmetric cells show a low resistance of 210Ωand a durable lifespan over 1,200 h at a high current density of 0.1 mA·cm^(-2).Assembled all solid state lithium metal batteries(ASSLMBs)with LiFePO_(4)(LFP)cathode significantly improve cycle stability and rate performance,proving a promising stabilization strategy towards the NASIOCN type electrolyte/anode interface in solid state Li metal batteries.

关键词： Li_(1.5)Al_(0.5)Ge_(0.5)P_(3)O_(12) solid-state battery Li+transport interfacial modification Al buffer

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应用于高效雾气收集的润滑微沟槽锥

Science China Materials 2024年第5期67卷 1574-1580页

作者：杨二鑫马臣西罗玉琼刘岚郑爽爽姚晰鞠婕 Key lab for Special Functional Materials of Ministry of Education School of MaterialsHenan UniversityKaifeng475004China

液滴在不对称一维表面的定向输送具有广泛应用,包括雾气收集、油水分离、海水淡化及传感等.液滴所受的驱动力和阻力共同作用决定液滴的运动性能,为提高液滴的运动性能,常见的策略是通过在运动方向引入各种不对称结构以增加驱动力,或者... 详细信息

液滴在不对称一维表面的定向输送具有广泛应用,包括雾气收集、油水分离、海水淡化及传感等.液滴所受的驱动力和阻力共同作用决定液滴的运动性能,为提高液滴的运动性能,常见的策略是通过在运动方向引入各种不对称结构以增加驱动力,或者构建光滑表面以减少阻力.然而,到目前为止将增强驱动力和降低阻力同时整合到一个体系中的策略仍未见报道,这主要是由于传统的液体填充润滑表面所需的润滑油很难在物理或化学不对称的表面上稳定存在.本研究中,我们提出在具有微沟槽结构的锥表面接枝柔性聚合物分子刷,即通过协同表面结构和化学修饰来增大液滴在锥结构表面拉普拉斯驱动力并减小粘滞阻力.结果表明,与仅具有微沟槽结构的锥和仅具有聚合物分子刷的光滑锥相比,润滑微沟槽锥可显著提高液滴的运动性能,本研究为开发高效液滴运输智能表面提供了新思路.

关键词： cone structure micro-grooves polymer brush fog harvesting

Simulations of the Dependence of Gas Physical Parameters on Deposition Variables during HFCVD Diamond Films

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Journal of Materials Science & Technology 2006年第5期22卷 599-604页

作者： Aiying WANG Kwangryeol Lee Chao SUN Lishi WEN Future Technology research Division Korea Institute of Science and Technology P.O.Box 131 CheongryangSeoul 130-650 Korea Plasma lab J＆L Tech. Co. Ltd Siheung city Kyunggi-do 2185-7 Korea Department of surface Engineering of Materials Institute of Metal Research Chinese Academy of SciencesShenyang 110016 China

During the growth of the hot filament chemical vapor deposition （HFCVD） diamond films, numerical simulations in a 2-D mathematical model were employed to investigate the influence of various deposition parameters on the gas physical parameters, including the temperature, velocity and volume density of gas. It was found that, even in the case of optimized deposition parameters, the space distributions of gas parameters were heterogeneous due primarily to the thermal blockage come from the hot filaments and cryogenic pump effect arisen from the cold reactor wall. The distribution of volume density agreed well with the thermal round-flow phenomenon, one of the key obstacles to obtaining high growth rate in HFCVD process. In virtue of isothermal boundary with high temperature or adiabatic boundary condition of reactor wall, however, the thermal roundflow was profoundly reduced and as a consequence, the uniformity of gas physical parameters was considerably improved, as identified by the experimental films growth.

关键词： Gas physical parameters Simulations Diamond films HFCVD

Recent progress in ionic liquid-based electrolytes for nonaqueous and aqueous metal batteries

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eScience 2024年第2期4卷 57-69页

作者： Xin Wu Yao Dai Nian Wu Li Xiao Chun Chen Le Yu State Key lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029PR China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029PR China

Nonaqueous Li metal batteries(LMBs)and aqueous Zn metal batteries(ZMBs)are promising next-generation secondary batteries owing to their high energy *** an appropriate electrolyte is critical for addressing the safety issues nonaqueous and aqueous metal batteries can *** liquids(ILs)have been widely used in secondary metal batteries because they are non-flammable,present good thermal stability,and have wide electrochemical *** review highlights the research progress on IL-based electrolytes for stable Li/Zn metal *** focus particularly on these electrolytes'electrochemistry and functionalities at the electrolyte/anode interface for inhibiting dendrite growth,preventing side reactions,and enhancing electrochemical *** is expected that this review will shed some light on the development of ILs for nextgeneration metal batteries.

关键词： Ionic liquids Electrolytes Li metal batteries Zn metal batteries surface engineering

Interfacial mechanism of hydrogel with controllable thickness for stable drag reduction

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Friction 2024年第2期12卷 231-244页

作者： Xiaotong WU Ying LIU Yunlei ZHANG Xingwei WANG Wufang YANG Lang JIANG Shuanhong MA Meirong CAI Feng ZHOU School of Advanced Manufacturing Nanchang UniversityNanchang 330031China State Key laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Yantai Zhongke research Institute of Advanced Materials and Green Chemical Engineering Shandong Laboratory of Yantai Advanced Materials and Green ManufactureYantai 264006China

surface wettability plays a significant role in reducing solid–liquid frictional resistance,especially the superhydrophilic/hydrophilic interface because of its excellent thermodynamic *** this work,poly(acrylic acid)-poly(acrylamide)(PAA–PAM)hydrogel coatings with different thicknesses were prepared in situ by polydopamine(PDA)-UV assisted surface catalytically initiated radical *** drag reduction performance of hydrogel surface was measured using a rotational rheometer by the plate–plate *** experimental results showed that the average drag reduction of hydrogel surface could reach up to about 56%in Couette flow,which was mainly due to the interfacial polymerization phenomenon that enhanced the ability of hydration layer to delay the momentum dissipation between fluid layers and the diffusion behavior of *** proposed drag reduction mechanism of hydrogel surface was expected to shed new light on hydrogel–liquid interface interaction and provide a new way for the development of steady-state drag reduction methods.

关键词： steady state drag reduction hydrogel interface hydration hydrophilic

Control of Phase Separation and Crystallization for High-Efficiency and Mechanically Deformable Organic Solar Cells

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7YSZ coating prepared by PS-PVD based on heterogeneous nucleation

能源与环境材料（英文） 2023年第5期6卷 389-397页

作者： Zicheng Ding Yi Zhang Yueling Su Yin Wu Yanchun Han Kui Zhao Shengzhong(Frank)Liu Key laboratory of Applied surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119China State Key laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun 130022China Key laboratory of Applied surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119China Dalian National laboratory for Clean Energy iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Stretchable organic solar cells(OSCs)have great potential as power sources for the next-generation wearable *** blending rigid photovoltaic components with soft insulating materials can easily endow the mechanical ductility of active layers,the photovoltaic efficiencies usually drops in the resulting ***,a high photovoltaic efficiency of 15.03％and a large crack-onset strain of 15.70％is simultaneously achieved based on a ternary blend consisting of polymer donor poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)thiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl)benzo[1',2'-c:4',5'-c']dithiophene-4,8-dione)](PM6),non-fullerene accepter 2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3":4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(Y6),and soft elastomer polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene(SEBS)through the control of phase separation and *** employing a high-boiling point solvent additive 1-chloronaphthalene(CN)with different solubilities for PM6 and Y6,the aggregation dynamics of PM6 and Y6 as well as the film solidification process are dramatically altered,allowing for the different molecular rearrangement and liquid-liquid phase separation ***,the ternary film with optimal CN content presents decreased SEBS domains and moderately improved molecular ordering of PM6 and Y6,enabling effective mechanical deformation and charge generation/*** revealed corrections between the film-formation process,film microstructure,and photovoltaic/mechanical characteristics in the ternary blend provide deep understanding of the morphology control toward high-performance stretchable OSCs.

关键词： film microstructure mechanical deformation molecular aggregation dynamics photovoltaic performance stretchable organic solar cells

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Chinese Journal of Aeronautics 2018年第4期31卷 820-825页

作者： Ziqian DENG Xiaofeng ZHANG Kesong ZHOU Min LIU Chunming DENG Jie MAO Zhikun CHEN School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China National Engineering laboratory for Modern Materials surface Engineering Technology & the Key lab of Guangdong for Modern Surfuce Engineering Technology Guangdong Institute of New Materials Guangzhou 510650 China School of Materials Science and Engineering South China University of Technology Guangzhou 510640 China

Plasma spray-physical vapor deposition（PS-PVD） as a novel coating process based on low-pressure plasma spray（LPPS） has been significantly used for thermal barrier coatings（TBCs）.A coating can be deposited from liquid splats, nano-sized clusters, and the vapor phase forming different structured coatings, which shows obvious advantages in contrast to conventional technologies like atmospheric plasma spray（APS） and electron beam-physical vapor deposition（EBPVD）. In addition, it can be used to produce thin, dense, and porous ceramic coatings for special applications because of its special characteristics, such as high power, very low pressure, etc. These provide new opportunities to obtain different advanced microstructures, thus to meet the growing requirements of modern functional coatings. In this work, focusing on exploiting the potential of gas-phase deposition from PS-PVD, a series of 7 YSZ coating experiments with various process conditions was performed in order to better understand the deposition process in PS-PVD, where coatings were deposited on different substrates including graphite and zirconia. Meanwhile, various substrate temperatures were investigated for the same substrate. As a result, a deposition mechanism of heterogeneous nucleation has been presented showing that surface energy is an important influencing factor for coating structures. Besides, undercooling of the interface between substrate and vapor phase plays an important role in coating structures.

关键词： 7YSZ Deposition mechanism Heterogeneous nucleation PS-PVD TBC

A simple chemical method for the synthesis of Cu^(2+) engrafted MgAl_(2)O_(4) nanoparticles: Efficient fluoride adsorbents, photocatalyst and latent fingerprint detection

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Journal of Environmental Sciences 2020年第2期32卷 301-315页

作者： Arnab Mukherjee Mrinal KAdak Prasanta Dhak Debasis Dhak Nanomaterials research lab Department of ChemistrySidho-Kanho-Birsha UniversityPurulia 723104India Department of Chemistry Techno India UniversityKolkata 700091India

An adaptable, energy efficient chemical process is employed to synthesize Cu^2+engrafted MgAl2O4 nanoparticles(Mg1-xCuxAl2O4, x = 0, 0.1, 0.3, 0.5 abbreviated as MCA0, MCA1, MCA3,and MCA5 respectively), using chelating ligand and the calcination temperature was determined by the thermogravimetric analysis of the precursor *** acted as good fluoride adsorbent in the presence of co-ions, different pH(2–11) via chemisorption revealed from Fourier-transform infrared spectroscopy(FTIR) and photodegraded Methylene Blue(MB).The satisfactory results were for MCA1(specific surface area 25.05 m^2/g) with 97%fluoride removal at pH 7.0 for the 10 mg/L initial fluoride concentration for 1.5 g/L adsorbent dose with 45 min contact time obeying the Langmuir isotherm model with negative thermodynamic parameters and 4 mmol of MCA3 with 98.51% photodegradation for 10-5 mol/L MB solution obeying pseudo-second-order and pseudo-first-order kinetics *** proposed photodegradation mechanism of MB was established by the FTIR and high-performance liquid chromatography(HPLC) *** nanoparticles are cubic, estimated through X-ray diffraction(XRD) and transmission electron microscopy(TEM) *** band gap energies, grain size, and the effective working pH were estimated by diffuse reflectance spectra(DRS), scanning electron microscope(SEM), and zero-point potential analysis respectively.A soil candle with MCA1 also fabricated for the household purpose and tested with some fluorinated field *** MCA3 was able to enhance the latent fingerprint on smooth surfaces.

关键词： Fluoride adsorbent Photocatalysis Mechanism Fingerprint detection Kroger-Vink notation Soil candle

Porous palladium phosphide nanotubes for formic acid electrooxidation

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Carbon Energy 2022年第3期4卷 283-293页

作者： Tian-Jiao Wang Yu-Chuan Jiang Jia-Wei He Fu-Min Li Yu Ding Pei Chen Yu Chen School of Materials Science and Engineering Key Laboratory of Macromolecular Science of Shaanxi ProvinceKey Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education)Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyShaanxi Normal UniversityXi'anChina

The development of an efficient catalyst for formic acid electrocatalytic oxidation reaction(FAEOR)is of great significance to accelerate the commercial application of direct formic acid fuel cells(DFAFC).Herein,palladium phosphide(PdxPy)porous nanotubes(PNTs)with different phosphide content(i.e.,Pd3P and Pd5P2)are prepared by combining the self-template reduction method of dimethylglyoxime-Pd(II)complex nanorods and succedent phosphating *** the reduction process,the self-removal of the template and the continual inside-outside Ostwald ripening phenomenon are responsible for the generation of the one-dimensional hollow and porous *** the basis of the unique synthetic procedure and structural advantages,Pd3P PNTs with optimized phos phide content show outstanding electroactivity and stability for *** portantly,the strong electronic effect between Pd and P promotes the direct pathway of FAEOR and inhibits the occurrence of the formic acid decomposition reaction,which effectively enhances the FAEOR electroactivity of Pd3P *** view of the facial synthesis,excellent electroactivity,high stability,and unordinary selectivity,Pd3P PNTs have the potential to be an efficient anode electrocatalyst for DFAFC.

关键词： electronic effect formic acid oxidation reaction palladium phosphide porous nanotubes self-template method