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SSRN 2023年

作者： Wang, Wandong Zhang, Shijie Chen, Guiyong Zhu, Yangxuan Zhao, Tian School of Civil Aviation Northwestern Polytechnical University Shaanxi Xi’an710072 China Co. Ltd 610000 China Hubei Key Laboratory of Theory and Application of Advanced Material Mechanics School of Science Wuhan University of Technology Wuhan430070 China Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China

There has been a disputation about how to design bi-material double cantilever beam (DCB) joints to measure pure mode I fracture toughness. This paper develops a theoretical frame to calculate the stresses in the adhesive layer and perform the data reduction and mode partitioning for generic bi-material DCB specimens. The theoretical model was validated using experimental data and conventional finite element method. The prediction results substantiate that the strain-based design strategy leads to a pure mode I fracture of the bi-material DCB joints. The proposed theoretical method can promote the application of strain-based criterion for designing the adhesively bonded bi-material DCB joints to appropriately obtain the pure mode I critical fracture toughness. © 2023, The Authors. All rights reserved.

关键词： Adhesives

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An Efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

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Nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang Kai Zhang Liping Ding Liyun Wu Songfeng E Qian He Nanyang Wang Hui Zuo Zhengyang Zhou Feng Ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of Electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular Engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

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Cross-Scale Synthesis of Organic High-k Semiconductors Based on Spiro-Gridized Nanopolymers

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Research 2022年第2期2022卷 111-122页

作者： Dongqing Lin Wenhua Zhang Hang Yin Haixia Hu Yang Li He Zhang Le Wang Xinmiao Xie Hongkai Hu Yongxia Yan Haifeng Ling Jin'an Liu Yue Qian Lei Tang Yongxia Wang Chaoyang Dong Linghai Xie Hao Zhang Shasha Wang Ying Wei Xuefeng Guo Dan Lu Wei Huang Centre for Molecular Systems and Organic Devices(CMSOD) State Key Laboratory of Organic Electronis and Information Displays&Institute of Advanced Materials(AM)Nanjing University of Posts.Telecommunications9 Wenyuan RoadNarnjing 210023China National Symnchrotron Radiationr Laboratory Anhui Provincial Engincering Laboratory of Advanced Functional Polymer FilmCAS Key Laboratory of Soft Matter ChemistryUniversity of Science and Technology of ChinaHgfei 230026China School of Plysics State Key Laboratory of Crystal MaterialsShandong UniversityJinanShardong 250100China Beijing National Laboratony for Molecular Scences National Biomedical Imaging CenterCollege of Chemistry and Molecular EngineeringPeking UniversityBejing 100871China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UntiversityXian 710072China State Key Laboratory of Supramolecular Structure and Materias College of Chemistyjilin University2699 Qianjin AvenueChangchun 130012China

High dielectric constants in organic semiconductors have been identified as a central challenge for the improvement in not only piexoelectric,preolecric,and freeltric efcts but also photoclecric conversion eficiency in OPVs,carrier mobility in OFETS,and charge density in charge-trapping ***,we report an ultralong persistence length(≈41 nm)efet of spiro-fused organic nanopolymers on dielectric properties,together with excitonic and charge carrier *** state-of-the-art nanopolymers,namely,nanopolyspirogrids(NPSGs),are synthesized via the simple crossscale Friedel-Crafts polygridlization of AjB-type *** high dielectric constant(k=8.43)of NPSG is firstly achieved by locking spiro-polygridization efect that results in the enhancement of dipole *** doping into a polystyrene-based dielectric layer,such a high-k feature of NPSG increases the feld-ffct carrier mobility from 0.20 to 0.90cm^(2)Vl s'in pentacene OFET ***,amorphous NPSG film exhibits an ultralow energy disorder(<50 meV)for an exellent zero-field hole mobility of 3.94×10^(-1)cm^(2)V^(-1)s^(-1).surpassing most of the amorphousπconjugated polymers Onganic nanopolymers with high dielectric constants open a new way to break through the bottleneck of eficiency and multifunctionality in the blueprint of the fourth generation semiconductors.

关键词： dielectric charge amorphous

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Development of a triboelectric nanogenerator toward self-powered ocean observatory

Development of a triboelectric nanogenerator toward self-pow...

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OCEANS

作者： Yang Yang Yuan Chao Pan Haonan Feng Chang Xin Liu Chenjing Shang Chang Bao Han Chinese Academy of Sciences Institute of Deep-Sea Science and Engineering Sanya China Key Laboratory of Advanced Functional Materials Beijing University of Technology Beijing China Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science College of Life Science and Oceanography Shenzhen University Shenzhen China

ISBN: (数字)9798350362077

ISBN: (纸本)9798350362084

Autonomous underwater mobile platforms usually rely on cables or batteries for energy supply, which has the problem of limited energy supply, which is not conducive to the development of distributed marine sensing networks. Here, we designed a hydrostatic pressure energy harvesting triboelectric nanogenerator (HP-TENG) for harvesting the energy of the hydrostatic pressure difference in the ocean to power the underwater equipment. HP-TENG’s spiral shaft drive design and TENG module can convert differential pressure energy into mechanical energy and further into electrical energy. The HP-TENG can generate an output current of $4.41 \ \mu \mathrm{A}$ and an open-circuit voltage of 26.1 V at a compression speed of $4 \mathrm{~cm} / \mathrm{s}$, and the total power output in a single compression process can be significantly increased by changing the spiral angle of the shaft. In addition, the power generated by the HP-TENG can also power low-power devices, and the generated energy at a compression speed of 2 $\mathrm{cm} / \mathrm{s}$ can be rectified to successfully light up 20 commercial LEDs. The results hold prospects for underwater blue energy harvesting and are expected to contribute to the development of self-powered equipment toward emerging “smart ocean” and blue economy applications.

关键词： Shafts Spirals Observatories Oceans Voltage Light emitting diodes Sensors Energy harvesting Triboelectricity Underwater equipment

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Recent advances in metastable alloys for hydrogen storage:a review

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Rare Metals 2022年第6期41卷 1797-1817页

作者： Huai-Jun Lin Yan-Shan Lu Liu-Ting Zhang Hai-Zhen Liu Kaveh Edalati Adám Révész Institute of Advanced Wear and Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China Guangdong Provincial Key Laboratory of Advance Energy Storage Materials South China University of TechnologyGuangzhou 510640China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Guangxi Novel Battery Materials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Guangxi Key Laboratory of Processing for Non-Ferrous Metallic and Featured Materials Guangxi UniversityNanning 530004China International Institute for Carbon-Neutral Energy Research(WPI-I2CNER) Kyushu UniversityFukuoka 819-0395Japan Department of Materials Physics E?tv?s UniversityBudapest 1518Hungary

Development of new materials with high hydrogen storage capacity and reversible hydrogen sorp-tion performances under mild conditions has very high value in both fundamental and application *** the past years,some new systems with metastable structures,such as ultra-fine nanocrystalline alloys,amorphous alloys,nanoglass alloys,immiscible alloys,high-entropy alloys,have been abundantly studied as hydrogen storage *** new hydrogen storage properties either from the kinetics or thermodynamics aspects have been *** this review,recent advances of studies on metastable alloys for hydrogen storage applications have been comprehensively *** materials preparation methods to synthesize metastable hydrogen storage alloys are firstly ***,hydrogen storage prop-erties of the metastable alloys are summarized and dis-cussed,focusing on the unique kinetics and thermodynamics properties by forming of such unique metastable *** examples,superior hydrogena-tion kinetics and higher hydrogen storage capacity have been achieved in Mg-based amorphous and nanoglass *** thermodynamics properties can be obtained in the immiscible Mg-Mn and Mg-Zr *** addition to highlighting the recent achievements of metastable alloys in the field of hydrogen storage,the remaining challenges and trends of the emerging research are also discussed.

关键词： Hydrogen storage Metastable alloys Kinetics Thermodynamics

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From core-shell to yolk-shell:Keeping the intimately contacted interface for plasmonic metal@semiconductor nanorods toward enhanced near-infrared photoelectrochemical performance

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Nano Research 2020年第4期13卷 1162-1170页

作者： Xiaodong Wan Jia Liu Dong Wang Yuemei Li Hongzhi Wang Rongrong Pan Erhuan Zhang Xiuming Zhang Xinyuan Li Jiatao Zhang Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China

Here we report a synthetic strategy for controllable construction of yolk-shell and core-shell plasmonic metal@semiconductor hybrid nanocrystals through modulating the kinetics of sulfurization reaction followed by cation *** yielded yolk-shell structured products feature exceptional crystallinity and more importantly,the intimately adjoined and sharp interface between plasmonic metal and semiconductor which facilitates efficient charge carrier communications between *** exploiting the system composed of Au nanorods and p-type PbS as a demonstration,we show that the Au@PbS yolk-shell nanorods manifest notable improvement in visible and near infrared light absorption compared to the Au@PbS core-shell nanorods as well as hollow PbS ***,the photocathode constituted by Au@PbS yolk-shell nanorods affords the highest photoelectrochemical activities both under simulated sunlight andλ>700 nm light *** superior performance of Au@PbS yolk-shell nanorods is considered arising from the combination of the favorable structural advantages of yolk-shell configuration and the surface plasmon resonance enhancement *** envision that the reported synthetic strategy can offer a valuable means to create hybrid nanocrystals with desirable structures and functions that enable to harness the photogenerated charge carriers,including the plasmonic hot holes,in wide-range solar-to-fuel conversion.

关键词： yolk-shell cation exchange surface plasmon resonance core-shell solar-to-fuel conversion

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Improving current and mitigating energy loss in ternary organic photovoltaics enabled by two well-compatible small molecule acceptors

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science China Chemistry 2021年第4期64卷 608-615页

作者： Yanna Sun Huan-Huan Gao Simin Wu Lingxian Meng Xiangjian Wan Mengyang Li Zaifei Ma Ziqi Guo Shitong Li Hongtao Zhang Chenxi Li Yongsheng Chen State Key Laboratory and Institute of Elemento-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsInstitute of Polymer ChemistryRenewable Energy Conversion and Storage CenterCollege of ChemistryNankai UniversityTianjin 300071China Center for Advanced Low-dimension Materials Stage Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Ternary organic photovoltaic(OPV)strategy is an effective but facile approach to enhance the photovoltaic performance for single-junction ***,a series of ternary OPVs were fabricated by employing a wide bandgap donor(PBDB-TF)and two acceptor-donor-acceptor(A-D-A)-type nonfullerene small molecule acceptors(NF-SMAs,called F-2 Cl and 3 TT-OCIC).As the third component,the near-infrared SMA,3 TT-OCIC,has complementary absorption spectrum,narrow bandgap and wellcompatible crystallization property to the host acceptor(F-2 Cl)for efficient ternary *** these,the optimal ternary devices yield significantly enhanced power conversion efficiency of 15.23%,one of the very few examples with PCE higher than15%other than Y6 *** is mainly attributed to the increased short-circuit current density of 24.92 m A cm^(-2) and dramatically decreased energy loss of 0.53 e *** work presents a successful example for simultaneously improving current,minimizing energy loss and together with modifying the morphology of active layers in OPVs,which will contribute to the further construction of high performance ternary OPVs.

关键词： organic photovoltaics ternary devices small molecule acceptors film morphology energy loss

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Hybrid Membrane of Spaeks Modified by Molybdenum Clusters with Enhanced Proton Conductivity

SSRN

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SSRN 2023年

作者： Ji, Fang Jiang, Fengyu He, Wen-Wen Luo, Hongwei Han, Xu Shen, Wangwang Liu, Menglong Zhou, Tao Xu, Jingmei Wang, Zhe School of Chemistry and Life Science Changchun University of Technology Changchun130012 China Advanced Institute of Materials Science Changchun University of Technology Changchun130012 China Key Laboratory of Advanced Functional Polymer Membrane Materials of Jilin Province Changchun130012 China

Developing novel proton exchange membranes (PEMs) with low cost and superior performance to replace Nafion is of great signiﬁcance. Polyoxometalate-doped sulfonated poly (aryl ether ketone sulfone) (SPAEKS) can combine the advantages of each component, resulting in optimized performance of the hybrid PEMs. Herein, we obtained hybrid membranes by introducing 2MeIm-{Mo132} into SPAEKS. 2MeIm-{Mo132} can provide additional proton hopping sites and build successive hydrophilic channels, thereby lowering the energy barrier, accelerating the proton migration and significantly fostering the proton conductivity of hybrid membranes. Especially, SP-2MIMo132-5 exhibits an enhanced proton conductivity of 75 mS cm-1 at 80 ℃, which is 82.9% higher than pristine SPAEKS membrane. The oxidation stability of the hybrid membrane reaches 99.43%, exceeding most of the PEMs. This work demonstrates that polyoxometalate-based clusters can serve as excellent proton conduction sites, opening up the choice of proton conduction carriers in hybrid membrane design and providing a novel idea to manufacture high-performance PEMs. © 2023, The Authors. All rights reserved.

关键词： Proton conductivity

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Atomic Modulation of 3D Conductive Frameworks Boost Performance of MnO2 for Coaxial Fiber‑Shaped Supercapacitors

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Nano-Micro Letters 2021年第1期13卷 44-55页

作者： Xiaona Wang Zhenyu Zhou Zhijian Sun Jinho Hah Yagang Yao Kyoung‑Sik Moon Jiangtao Di Qingwen Li Ching‑ping Wong Division of Advanced Nanomaterials Key Laboratory of Nanodevices and ApplicationsJoint Key Laboratory of Functional Nanomaterials and DevicesCAS Center for Excellence in NanoscienceSuzhou Institute of Nano‑Tech and Nano‑BionicsChinese Academy of SciencesSuzhou 215123People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Coaxial fiber-shaped supercapacitors are a promising class of energy storage devices requiring high performance for flexible and miniature electronic ***,they are still struggling from inferior energy density,which comes from the limited choices in materials and structure ***,Zn-doped CuO nanowires were designed as 3D framework for aligned distributing high mass loading of MnO2 *** could be introduced into the CuO crystal lattice to tune the covalency character and thus improve charge *** Zn–CuO@MnO2 as positive electrode obtained superior performance without sacrificing its areal and gravimetric capacitances with the increasing of mass loading of MnO2 due to 3D Zn–CuO framework enabling efficient electron transport.A novel category of free-standing asymmetric coaxial fiber-shaped supercapacitor based on Zn0.11CuO@MnO2 core electrode possesses superior specific capacitance and enhanced cell potential *** asymmetric coaxial structure provides superior performance including higher capacity and better stability under deformation because of sufficient contact between the electrodes and *** on these advantages,the as-prepared asymmetric coaxial fiber-shaped supercapacitor exhibits a high specific capacitance of 296.6 mF cm^−2 and energy density of 133.47μWh cm^−*** addition,its capacitance retention reaches 76.57%after bending 10,000 times,which demonstrates as-prepared device’s excellent flexibility and long-term cycling stability.

关键词： Coaxial fiber-shaped supercapacitors 3D framework Zn-CuO nanowires Zn-CuO@MnO2 core-shell structure

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A pH-responsive biomimetic drug delivery nanosystem for targeted chemo-photothermal therapy of tumors

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Nano Research 2022年第5期15卷 4274-4284页

作者： Yanmin Ju Zhiyi Wang Zeeshan Ali Hongchen Zhang Yazhou Wang Nuo Xu Hui Yin Fugeng Sheng Yanglong Hou Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD) Beijing Innovation Centre for Engineering Science and Advanced Technology(BIC-ESAT)School of Materials Science and EngineeringPeking UniversityBeijing 100871China College of Pharmacy China Pharmaceutical UniversityNanjing 211198China Synthetic and Functional Biomolecules Center Department of Chemical BiologyCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Fifth Medical Center of Chinese PLA General Hospital Beijing 100071China

Smart drug delivery nanosystem is significant for tumor treatments due to its possibility of temporally,spatially,and dose-controlled ***,the therapeutic efficacy of drug delivery nanosystem is often compromised in cancer treatment as the enrichment of therapeutic agents in the reticuloendothelial ***,doxorubicin(DOX)loaded biomimetic drug delivery nanosystem with macrophage cell membrane(MCM)camouflaged,MnFe_(2)O_(4)-DOX-MCM nanocube(NC),is developed for cancer treatment with tumor targeting,pH-stimuli drug release,and chemo-photothermal therapeutic *** nanosystem shows the capability of immune escape and enhanced cellular uptake of cancer cells due to the MCM ***-labile bond between the MnFe2O4 NCs and DOX remains stable at physiological condition and release drugs immediately in response to the endo-/lysosome pH ***,the photothermal effect of the nanosystem destroys tumor tissue,which further promotes chemotherapeutic *** vivo results demonstrate the tumor homing ability and produce a notable synergistic therapeutic effect of the ***,biomimetic pH-responsive drug delivery nanosystem,MnFe_(2)O_(4)-DOX-MCM NCs,is an effective nanoplatform,which might be potential application for cancer synergistic treatment.

关键词： drug delivery macrophage cell membrane pH stimuli synergistic therapy

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