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Correction: Investigating the electroactivity of nitrogen species in MoC nanoparticles/N-doped carbon nanosheets for high-performance Na/Li-ion batteries

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Journal of Materials Chemistry A 2020年第42期8卷 22434-22434页

作者： Qing Wu Xiaofeng Li Xianjie Wang Tai Yao Ying Bai Jikang Jian Bo Song Department of Physics Harbin Institute of Technology Harbin 150001 China Interdisciplinary Science Research Center Harbin Institute of Technology Harbin 150001 China School of Physics & Electronics Henan University Kaifeng 475004 China School of Physics and Optoelectronic Engineering Guangdong University of Technology Guangzhou P. R. China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 China

Correction for ‘Investigating the electroactivity of nitrogen species in MoC nanoparticles/N-doped carbon nanosheets for high-performance Na/Li-ion batteries’ by Qing Wu et al., J. Mater. Chem. A, 2020, DOI: 10.1039...

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Sequential deposition method fabricating carbonbased fully-inorganic perovskite solar cells

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science China Materials 2018年第1期61卷 73-79页

作者：丁希宏任英科吴雅罕徐亚峰朱俊 Tasawar Hayat Ahmed Alsaedi 李兆乾黄阳戴松元 Beijing Key Laboratory of Novel Thin-Film Solar Cells North China Electric Power University Key Laboratory of Photovoltaic and Energy Conservation Materials Hefei Institutes of Physical Science Chinese Academy of Sciences Key Lab of Special Display Technology Ministry of Education National Engineering Lab of Special Display Technology State Key Lab of Advanced Display Technology Academy of Opto-Electronic Technology Hefei University of Technology NAAM Research Group Department of Mathematics Faculty of Science King Abdulaziz University Department of Mathematics Quaid-I-Azam University

Hybrid organic-inorganic halide perovskite material has been considered as a potential candidate for various optoelectronic applications. However, their high sensitivity to the environment hampers the actual *** the technology replacing the organic part of the hybrid solar cells needs to be developed. Herein, we fabricated fullyinorganic carbon-based perovskite CsPbBr_3 solar cells via a sequential deposition method with a power conversion efficiency of 2.53% and long-time stability over 20 d under ambient air conditions without any encapsulation. An evolution process from tetragonal CsPb_2Br_5 to CsPb_2Br_5-CsPbBr_3 composites to quasi-cubic CsPbBr_3 was found, which was investigated by scanning electron microscopy, X-ray diffraction spectra, UV-vis absorption spectra and Fourier transform infrared spectroscopy. Detailed evolution process was studied to learn more information about the formation process before10 min. Our results are helpful to the development of inorganic perovskite solar cells and the CsPb_2Br_5 based optoelectronic devices.

关键词： perovskite solar cell phase transition carbon cathode

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Towards air stability of ultra-thin gase devices: Avoiding environmental and laser-induced degradation by encapsulation

arXiv

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arXiv 2018年

作者： Zhao, Qinghua Frisenda, Riccardo Gant, Patricia de Lara, David Perez Munuera, Carmen Garcia-Hernandez, Mar Niu, Yue Wang, Tao Jie, Wanqi Castellanos-Gomez, Andres State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an710072 China Key Laboratory of Radiation Detection Materials and Devices Ministry of Industry and Information Technology Xi'an710072 China MadridE-28049 Spain Campus de Cantoblanco MadridE-28049 Spain National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin China

Gallium selenide (GaSe) is a novel two-dimensional material, which belongs to the layered III-VIA semiconductors family and attracted interest recently as it displays single-photon emitters at room temperature and strong optical non-linearity. Nonetheless, few-layer GaSe is not stable under ambient conditions and it tends to degrade over time. Here we combine atomic force microscopy, Raman spectroscopy and optoelectronic measurements in photodetectors based on thin GaSe to study its long-term stability. We found that the GaSe flakes exposed to air tend to decompose forming firstly amorphous selenium and Ga2Se3 and subsequently Ga2O3. While the first stage is accompanied by an increase in photocurrent, in the second stage we observe a decrease in photocurrent which leads to the final failure of GaSe photodetectors. Additionally, we found that the encapsulation of the GaSe photodetectors with hexagonal boron nitride (h-BN) can protect the GaSe from degradation and can help to achieve long-term stability of the devices. Copyright © 2018, The Authors. All rights reserved.

关键词： Selenium compounds

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Catalytic properties of ZrB2–SiC–W ultra–high temperature ceramics at moderate temperatures

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IOP Conference Series: Materials science and Engineering 2019年第1期479卷

作者： N Li P Hu P F Xing B Ke Research Center of Laser Fusion China Academy of Engineering Physics Mianyang 621900 PR China National Key laboratory of Science and Technology on advanced composites in Special Environments Harbin Institute of Technology Harbin 150001 PR China

Catalytic behaviors related to recombination reactions of dissociated oxygen atoms on the surface of ZrB2–SiC–W ultra–high temperature ceramic was investigated quantitatively in the temperature ranges from room temperature to 1300 K, and recombination coefficient can be obtained by the photochemical method based on spectral diagnostic techniques using microwave–discharge plasma apparatus. Oxidation of specimens even at relatively low temperature during the experiment had a significant influence on the catalytic properties of ZrB2–SiC–W ultra–high temperature ceramics, and the results revealed the detectable dependence of the catalytic properties upon environment–induced surface modification. The relationship between catalytic properties of ZrB2–SiC–W ultra–high temperature ceramics and surface microstructure was also discussed in detail.

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Thermal decomposition behavior and ablation resistance of Si-O-C modified carbon fibers reinforcing phenolic resin composites

Thermal decomposition behavior and ablation resistance of Si...

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第二十一届国际复合材料大会

作者： Huafei Xue Changqing Hong Xinghong Zhang Haiming Cheng Jiecai Han Key Laboratory of Science and Technology for Advanced Composites in Special Environments Harbin Institute of Technology

The thermal decomposition behavior of phenolic fiber and phenolic resin(PR) matrix was investigated by using a thermo gravimetric analyzer in nitrogen *** ablative properties of the composite specimens were quantitatively evaluated by performing oxyacetylene flame test and plasma arc-heated wind tunnel ablative *** ablative properties of Si-O-C modified carbon fabrics reinforced phenolic resin(Si-O-C/PR) composites were compared with those of carbon fabric reinforced(Cf/PR) *** patterns and microstructures of the ablated composite specimens were also studied with scanning electron microscope, and the advantages of the Si-O-C modified carbon fabrics reinforced composites under ablation conditions were *** decomposition mechanism of Si-O-C modified carbon fibers is more complex compared to which the carbon fibers *** mixture rule can be used to predict the mass loss rate of the Si-O-C/PR composites during the oxyacetylene flame test, mass and liner ablation rates decreases sharply after *** the oxyacetylene flame test, there was no macroscopical crack or delamination can be observed in Si-O-C/PR composite specimens and the carbonaceous residue blocks which were produced by the Si-O-C pre-polymer and the PR were attached well to the carbon *** resistance to heat-flow erosion of the Si-O-C/PR composites had significantly improved and the mass loss of the Si-O-C/PR composites(25.6%) was much lower than those of the Cf/PR composites(58.4%) in the exhaust plume ablative test.A vis-à-vis char layer of the Si-O-C/PR composites formed during this ablation.

关键词： Fiber reinforced polymer composites Phenolic resin Ablative property Decomposition Microstructure

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MULTIFUNCTIONAL PATTERN RECONFIGURABLE WRIST ANTENNA STRUCTURES BASED ON BISTABLE COMPOSITE CYLINDERICAL SHELLS FOR ON-BODY APPLICATIONS

MULTIFUNCTIONAL PATTERN RECONFIGURABLE WRIST ANTENNA STRUCTU...

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第二十一届国际复合材料大会

作者： Jianqiang Hu Yanqi Li Fuhong Dai National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology

＜正＞Extraordinary research on on-body devices has provided new ideas for medical instruments,healthmonitoring systems and telemedicine *** radio frequency（RF）engineers have developed wearable antennas in the form of wristbands or attachments to clothing[1]–[3].However,these wearable antennas must have sufficient both structure and antenna performance to satisfy the requirements of the rapid development of electronic and wireless communication technologies.

关键词： Bistable composite shells Pattern reconfigurable Multifunctional Wearable antenna

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Turning the amphiphilicity of graphene oxide by grafting lauryl groups for self-assembly of nanostructures at the interface

Turning the amphiphilicity of graphene oxide by grafting lau...

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第二十一届国际复合材料大会

作者： Guomin Ding Weicheng Jiao Rongguo Wang Jun Li Yue Niu Yifan Huang National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology

Based on the oxygen functional groups and a network of hydrophobic polyaromatic islands of unoxidized benzene rings, GO should be viewed as an amphiphile with a largely hydrophobic basal plane and hydrophilic edges. The aim of this work was to develop a novel method for tuning the amphiphilicity of graphene oxide（GO）.Hydrophobic lauryl groups were successfully linked to the surface of GO sheets through covalent interactions by the Williamson ether synthesis method, to improve the hydrophobicity;at the same time, the carboxylic groups on the GO sheets were retained to preserve *** morphology and microstructures of the lauryl-modified GO（LGO） were ***, the dispersion stability of LGO was investigated by UV-Visible *** results show that LGO has remarkable amphiphilicity, and LGO can be uniformly and stably dispersed in both strongly polar deionized（DI） water as well as organic solvents such as N-methyl pyrrolidone（NMP） and ethyl acetate（EA）.Further, surface and interfacial tension measurements of LGO and GO suspensions were performed, and the relationship between surface tension and temperature was also *** to GO, LGO has higher surface activity and can be more easily and strongly adsorbed onto interfaces at low *** to this, LGO aqueous solution can form the stable bubbles after violent shock（Figurea.1 a）, showing characteristic of surfactant ***, LGO can reduce the interfacial tension between n-heptane and water by 20.95%, as shown in Figure 1 b,so that it can form stable Pickering emulsions at the interface, without any other ***, the effect of inorganic salts on the LGO surface activity was studied by adding *** results indicate that the surface tension of LGO suspensions can be tuned by changing the inorganic salt ***, the ζ potential test results show that the ζ potential of LGO aqueous solution are-40.6 mV with no NaCl and-30.9

关键词： LGO Turning the amphiphilicity of graphene oxide by grafting lauryl groups for self-assembly of nanostructures at the interface

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Polarization-sensitive and broadband photodetection based on a mixed-dimensionality TiS3/Si p-n junction

arXiv

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arXiv 2019年

作者： Niu, Yue Frisenda, Riccardo Flores, Eduardo Ares, Jose R. Jiao, Weicheng de Lara, David Perez Sanchez, Carlos Wang, Rongguo Ferrer, Isabel J. Castellanos-Gomez, Andres Science and Technology on Advanced Composites in Special Environments Laboratory Harbin Institute of Technology Harbin150080 China Ciudad Universitaria de Cantoblanco Calle Faraday 9 Madrid28049 Spain . Dpto. de Física de Materiales Universidad Autónoma de Madrid UAM Campus de Cantoblanco MadridE-28049 Spain Instituto Nicolás Cabrera Universidad Autónoma de Madrid UAM Campus de Cantoblanco MadridE-28049 Spain MadridE-28049 Spain

The capability to detect the polarization state of light is crucial in many day-life applications and scientific disciplines. Novel anisotropic two-dimensional materials such as TiS3 combine polarization sensitivity, given by the in-plane optical anisotropy, with excellent electrical properties. Here we demonstrate the fabrication of a monolithic polarization sensitive broadband photodetector based on a mixed-dimensionality TiS3/Si p-n junction. The fabricated devices show broadband responsivity up to 1050 nm, a strong sensitivity to linearly polarized illumination with difference between the two orthogonal polarization states up to 350 % and a good detectivity and fast response time. The discussed devices can be used as building blocks to fabricate more complex polarization sensitive systems such as polarimeters. Copyright © 2019, The Authors. All rights reserved.

关键词： Titanium compounds

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MECHANICAL PROPERTIES OF NON-CRIMP FABRIC REINFORCED QUASI-ISOTROPIC LAMINATE LOADED IN BIAXIAL TENSION-COMPRESSION

MECHANICAL PROPERTIES OF NON-CRIMP FABRIC REINFORCED QUASI-I...

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第二十一届国际复合材料大会

作者： Songhe Meng Leying Song Chenghai Xu Xinxing Han Wei Wang Science and Technology on Advanced Composites in Special Environments Laboratory Harbin Institute of Technology

The non-crimp fabric reinforced quasi-isotropic composite finds fast growing application in primary structures for its excellent performance at low production costs. The non-crimp fabric prepreg shows significantly better mechanical properties along the fiber direction than the woven counterpart, due to practically straight fibers. It can be further designed into the non-crimp fabric reinforced quasiisotropic composite with good multi-directional in-plane properties. However, the detailed understanding of mechanical behaviors for this kind of composite should be described by experimental study, before it is efficiently used in design and the predictive models are developed. This paper will focus on the mechanical performance of the non-crimp fabric quasi-isotropic laminate under uniaxial tension, uniaxial compression and especially biaxial tension-compression with three different load ratios, which is defined as the ratio of tensile to compressive. Typical stress-strain curves with 1:1 load ratio, as shown in Fig. 1(a), exhibit near linear responses at the initial stage of load, followed by a sharp drop in stress along the compressive direction. It can be observed that the catastrophic failure occurs in compressive direction while the potential ability to withstand the continued tensile stress is also available in tensile direction. The corresponding curves under 3:1 load ratio are shown in Fig.1(b). Two curves present the linear trend at the early stage of load and exhibit sharp drop in stress simultaneously when the final failure occurs. The adopted one-way analysis of variance method indicates load ratio has a significant effect on tensile strength, but has relatively less significant effect on tensile modulus, compressive modulus and compressive strength. The failure analysis with the examinations on the fracture surface is also available to explain the failure modes.

关键词： Non-crimp fabric Biaxial tension-compression Failure analysis Variance analysis

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VOID FORMATION AND DISTRIBUTION DURING CFRP CURING PROCESS

VOID FORMATION AND DISTRIBUTION DURING CFRP CURING PROCESS

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第二十一届国际复合材料大会

作者： Dongkangkang Chen Yumin Zhang Yufeng Zhou Science and Technology on Advanced Composites in Special Environments Laboratory Harbin Institute of Technology

＜正＞1 INTRODUCTION The excellent properties in carbon fiber reinforced polymer composite make it receive widespread attention in the field of large aircraft design and manufacture[1-2].The application of CFRP composites also play a key role in the constitution of aerospace plane and its components[3].However,due to the structure and the organization form principle of the composite component,defects such as

关键词： CFRP porosity curing reaction distribution characters industrial CT

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