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Tailoring the electronic acceptor–donor heterointerface between black phosphorus and Co_(3)O_(4) for boosting oxygen bifunctional electrocatalysis

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Chinese Chemical Letters 2023年第2期34卷 284-289页

作者： Jing Zou Yilun Zou Haitao Wang Wei Wang Pingxiu Wu Arramel Jizhou Jiang Xin Li School of Chemistry and Environmental Engineering School of Environmental Ecology and Biological EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Tree Gorges LaboratoryWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and TechnologyYueyang 414006China Semiconductor Electronic Special Gas of Hubei Engineering Research Center Jingzhou 434000China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Black phosphorus (BP) as an uprising two-dimensional material exhibits attractive potential in the field of electrocatalysis due to the inherent advantages of high carrier mobility and abundant lone pair ***,the exposed active electrons compel BP to be deactivated by oxidative ***,the electronic signature of acceptor-donor heterointerfacial interactions between BP and Co_(3)O_(4)is realized via wet ball *** preferential migration of active electrons from BP to Co_(3)O_(4)is achieved at the heterointerface since the Fermi level of BP is higher than that of Co_(3)O_(4).Such relative energetic consideration promotes reasonable oxygen electrocatalytic active ***,it significantly suppresses the oxidative degradation of ***,the resulting Co_(3)O_(4)/BP heterojunction possesses superior oxygen bifunctional electrocatalytic activity than its parent *** importantly,this work promotes an efficient route towards BP-based multifunctional catalysts.

关键词： Electronic acceptor-donor Black phosphorus Co_(3)O_(4) Charge transfer Oxygen bifunctional electrocatalysis

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Significant role of nanoscale Bi-rich phase in optimizing thermoelectric performance of Mg3Sb2

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Chinese Physics B 2020年第3期29卷 405-410页

作者： Yang Wang Xin Zhang Yan-Qin Liu Jiu-Xing Zhang Ming Yue Key Laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China

Mg3Sb1.5Bi0.5-based alloys have received much attention,and current reports on this system mainly focus on the modulation of ***,there lacks the explanation for the choice of Mg3Sb1.5Bi0.5 as *** in this work,the thermoelectric properties of Mg3Sb2-xBix(0.4≤x≤0.55)compounds are systematically investigated by using the first principles calculation combined with *** calculated results show that the band gap decreases after Bi has been substituted for Sb site,which makes the thermal activation *** maximum figure of merit(ZT)is 0.27 at 773 K,which is attributed to the ultra-low thermal conductivity 0.53 W·m-1·K-1 for x=*** large mass difference between Bi and Sb atoms,the lattice distortion induced by substituting Bi for Sb,and the nanoscale Bi-rich particles distributed on the matrix are responsible for the reduction of thermal *** introduction of Bi into Mg3Sb2-based materials plays a vital role in regulating the transport performance of thermoelectric materials.

关键词： first principles calculations nanoscale Bi-rich phase Mg3Sb2 thermoelectric performance

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Methylamine-complexed liquefaction perovskite precursor for high-performance printable carbon-based solar cells

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Green Chemical Engineering 2025年

作者： Sheng, Jie Shao, Wu Zhang, Huidong He, Jingshan Wang, Yuanbo Ding, Tian He, Jingwen Cen, Ronghao Deng, Zhihao Fu, Yufei Wu, Yongzhen Wu, Wenjun Zhu, Wei-Hong Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Institute of Fine Chemicals Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai200237 China Center of Photosensitive Chemicals Engineering East China University of Science and Technology Shanghai200237 China

To address the environmental impact of solution-based perovskite solar cell fabrication, solvent-free approaches have gained prominence. This study innovatively introduces a methylamine-assisted precursor liquefaction technique for printable mesoscopic perovskite solar cells (p-MPSCs). This innovative method achieves superior crystal quality and enhanced charge carrier transport, significantly boosting device performance. Furthermore, comprehensive investigations are conducted to elucidate the crystallization mechanism of perovskite. Through meticulous process optimization, we achieve a remarkable power conversion efficiency (PCE) of 16.73%, surpassing the 15.48% PCE of the solution-based method. This approach offers a promising avenue for producing environmentally friendly and sustainable p-MPSCs, contributing to the development of more efficient de-solvation strategies. © 2024 Institute of Process Engineering, Chinese Academy of sciences.

关键词： Perovskite

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Interface reaction between dd6 single crystal superalloy and ceramic core 21st

Interface reaction between dd6 single crystal superalloy and...

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21st Chinese Materials Conference, CMC 2020

作者： Yao, Jiansheng Wang, Lili Dong, Longpei Yang, Shu Yang, Wei Wang, Zengli Shen, Bin Science and Technology on Advanced High Temperature Structural Materials Laboratory AECC Beijing Institute of Aeronautical Materials Beijing100095 China Laboratory of Functional Films School of Materials Science and Engineering Xi’an University of Technology Xi’an710048 China

ISBN: (纸本)9783035717389

The interfacial reaction between alloys and ceramic materials is an important factor to influence the quality and service performance of the turbine blade. In this paper, three typical height sections of 120 mm, 160 mm and 210 mm were selected, and the interface reactions between DD6 single crystal superalloy and silica based ceramic cores were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The results showed that the infiltration degree of the melt alloy increased with the increase of reaction time. The thickness of the reaction layer could be over 0.3 mm when the reaction time increased up to 70 min. The main reasons of forming the infiltration layer were the infiltration of the Al element and the interfacial reaction between the Al element and the ceramic core. There formed an aluminum deficient layer on the metal surface because of the interface reaction between the alloy and the ceramic core. The dense layer formed by interfacial reaction on the surface of the core will cause some difficulties for core leaching. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Silica

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Three-dimensional acetylenic modified graphene for highperformance optoelectronics and topological materials

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npj Computational Materials 2021年第1期7卷 992-998页

作者： Yan Gao Chengyong Zhong Shengyuan A.Yang Kai Liu Zhong-Yi Lu Department of physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of ChinaBeijingChina Institute for Advanced Study Chengdu UniversityChengduChina Research Laboratory for Quantum Materials Singapore University of Technology and DesignSingaporeSingapore Center for Quantum Transport and Thermal Energy Science School of Physics and TechnologyNanjing Normal UniversityNanjingChina

Seeking carbon phases with versatile properties is one of the fundamental goals in physics,chemistry,and materials ***,based on the first-principles calculations,a family of three-dimensional(3D)graphene networks with abundant and fabulous electronic properties,including rarely reported dipole-allowed truly direct band gap semiconductors with suitable band gaps(1.07–1.87 eV)as optoelectronic/photovoltaic materials and topological nodal-ring semimetals,are proposed through stitching different graphene layers with acetylenic ***,the optical absorption coefficients in some of those semiconducting carbon allotropes express possibly the highest performance among all of the semiconducting carbon phases known to *** the other hand,the topological states in those topological nodal-ring semimetals are protected by the time-reversal and spatial symmetry and present nodal rings and nodal helical loops topological *** newly revealed carbon phases possess low formation energies and excellent thermodynamic stabilities;thus,they not only host a great potential in the application of optoelectronics,photovoltaics,and quantum topological materials etc.,but also can be utilized as catalysis,molecule sieves or Liion anode materials and so ***,the approach used here to design novel carbon allotropes may also give more enlightenments to create various carbon phases with different applications.

关键词： dimensional topological versatile

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Highly flexible,mechanically strengthened metallic glass-based composite electrode with enhanced capacitance and cyclic stability

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Rare Metals 2022年第11期41卷 3717-3728页

作者： Yi Xu Pak Man Yiu Yu-Kun Wang Xiao-Meng Qin Tamaki Shibayama Seiichi Watanabe Masato Ohnuma Da-Zhu Chen Hua Cheng Chan-Hung Shek Zhou-Guang Lu Chen Liu Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China Department of Materials Science and Engineering City University of Hong KongHong Kong999077China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen518060China Division of Quantum Science and Engineering Faculty of EngineeringCentre for Advanced Research of Energy and MaterialsHokkaido UniversitySapporo0608628Japan Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Department of Materials Science and EngineeringSouthern University of Science and TechnologyShenzhen518060China

The design of flexible composite electrodes has become the top priority in energy storage devices for the development of future wearable intelligent ***,searching for fully integrated,ultrathin flexible composite electrodes with satisfying electrochemical performance is still a major ***,we introduce a nanoporous gold metallic glass(MG) ribbon-based composite electrode with excellent electric conductivity,mechanical flexibility,and extra capacitance by integrating polypyrrole(PPy) into wrinkled nanoporous ribbon(NPG@MG).The freestanding,ultrathin,highly conductive and flexible" nature of the composite electrode prevents the conducting polymer from structural instability resulting from the volume swell and shrink during the charging/discharging circulation,and the packed PPy provides protection for the wrinkled topology on the surface of the MG *** capacitance of pure NPG@MG-PPy composite electrode reached 393 mF·cm^(-2).The ultra-thin all-solid-state flexible supercapacitor demonstrates an excellent capacitance of 172 mF·cM^(-2)(14.8 F·cm^(-3)),accompanied by a superior cycling capability after 8000 charge/discharge cycles attributed to mechanical *** areal energy density also reached 0.74 mWh·cm^(-3)(9μWh·cm^(-2)) at a power density of 1 μW·cm^(-2).This work provides valuable concepts on the design of PPy-based hybrid materials for flexible energy storage systems with greatly enhanced electrochemical performances.

关键词： Metal-matrix composites(MMCs) Thin films Porosity Nano-structures

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Lightweight Y2O3 stabilized ZrO2 (YSZ) fiber porous ceramics with ultra-low thermal conductivity

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Ceramics International 2025年

作者： Zhao, Yingjie Sun, Xiaohong Guo, Ruisong Liu, Hongyao Zhao, Xinqi Huo, Mingda Ren, Junbo Fu, Weijie Li, Xin School of Materials Science and Engineering State Key Laboratory of Precious Metal Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China School of Materials Science and Engineering State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an710049 China School of Materials Science and Engineering Key Laboratory of Intelligent Sensing Materials and Chip Integration Technology of Zhejiang Province Hangzhou Innovation Institute of Beihang University Hangzhou310052 China

Fiber porous ceramics have numerous applications in protecting structural parts from melting due to combustion gases in aircraft engines. Although these materials have been utilized for decades, considerable research continues to focus on their further optimization, particularly in enhancing high-temperature resistance, lowering thermal conductivity, and improving compressive strength. In this work, the three-dimensional Y2O3-stabilized ZrO2 (YSZ) fiber porous ceramics were fabricated by adding silica-boron sol (SBS) as an inorganic binder to the YSZ fiber substrate followed by a pressureless sintering process. During this process, a borosilicate glass phase was developed at the intersections of the fibers, helping enhance the thermal stability and improve mechanical properties. The three-dimensional YSZ fiber porous ceramics were characterized by ultra-low thermal conductivity (0.054–0.065 W·m−1·K−1), enhanced compressive strength (144.82–238.81 kPa), high open porosity (88.64–91.67 %) and extremely low bulk density (0.41–0.53 g·cm−3). When the SBS content in the YSZ fiber porous ceramics was 25 wt%, the sample achieved optimal overall performance, with a low bulk density of 0.44 g·cm−3, thermal conductivity of 0.058 W·m−1·K−1 and the compressive strength of 201.26 kPa. The research provides critical insights for preparation and engineering applications of YSZ fiber porous ceramics in aircraft engine thermal protection systems. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Binders

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Carboxylated carbon nanotubes with high electrocatalytic activity for oxygen evolution in acidic conditions

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InfoMat 2022年第1期4卷 130-141页

作者： Xin Zhang Wenqing Zhang Jianying Dai Mingzi Sun Jun Zhao Lifei Ji Lin Chen Fanlong Zeng Fengchun Yang Bolong Huang Liming Dai Key Laboratory of Synthetic and Natural Functional Molecule Chemistry(Ministry of Education) College of Chemistry and Material ScienceNorthwest UniversityXi'anChina Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityKowloonHong Kong SARChina Centre of Advanced Carbon Materials School of Chemical EngineeringUniversity of New South WalesSydneyAustralia

Since most electrocatalysts for oxygen evolution reaction(OER),except for precious metal oxides RuO_(2) and IrO_(2),are unstable in harsh acidic solutions,it is highly desirable to develop high-performance OER electrocatalysts for acidic media,though it is still a big ***,we report a simple strategy to produce carboxyl-enriched multiwalled carbon nanotubes(COOH-MWNTs)that exhibit stable and high electrocatalytic activities for OER in acidic solutions,showing an overpotential at a current density of 10 mA cm^(–2) and a Tafel slope as low as of 265 mV and 82 mV dec^(–1),*** far as we are aware,these results represent the best OER performance for metal-free electrocatalysts,even comparable to those of RuO_(2) and IrO_(2).We have further revealed the catalytic mechanism,which involves one electron lose from the COOH-MWNTs catalyst at the beginning of the OER process to trigger H_(2)O molecule oxidation by forming peralcohol,followed by the recapture of one electron from water molecule to oxidize water and to recover the initial state for the COOH-MWNTs *** unravel of this new OER mechanism is important as it provides new insights into the crucial role of organic functional groups in electrocatalytic ***,the mechanistic understanding can be used to guide the design and development of novel metalfree catalysts for acidic OER electrocatalysis and beyond.

关键词： acidic oxygen evolution carbon nanotubes carboxylation defect metal-free catalytic mechanism

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Antiferroelectric Altermagnets: Antiferroelectricity Alters Magnets

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Physical Review Letters 2025年第10期134卷 106801-106801页

作者： Xunkai Duan Jiayong Zhang Ziye Zhu Yuntian Liu Zhenyu Zhang Igor Žutić Tong Zhou Eastern Institute for Advanced Study Eastern Institute of Technology Ningbo Zhejiang 315200 China School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China School of Physical Science and Technology Suzhou University of Science and Technology Suzhou 215009 China International Center for Quantum Design of Functional Materials (ICQD) and Hefei National Laboratory University of Science and Technology of China Hefei 230026 China Department of Physics University at Buffalo State University of New York Buffalo New York 14260 USA

Magnetoelectric coupling is crucial for uncovering fundamental phenomena and advancing technologies in high-density data storage and energy-efficient devices. The emergence of altermagnets, which unify the advantages of ferromagnets and antiferromagnets, offers unprecedented opportunities for magnetoelectric coupling. However, electrically tuning altermagnets remains an outstanding challenge. Here, we demonstrate how this challenge can be overcome by using antiferroelectricity and ferroelectricity to modulate the spin splitting in altermagnets, employing a universal, symmetry-based design principle supported by an effective model. We introduce an unexplored class of multiferroics: antiferroelectric altermagnets (AFEAM), where antiferroelectricity and altermagnetism coexist in a single material. From first-principles calculations, we validate the feasibility of AFEAM in well-established van der Waals metal thio(seleno)phosphates and perovskite oxides. We reveal the design of AFEAM ranging from two-dimensional monolayers to three-dimensional bulk structures. Remarkably, even a weak electric field can effectively toggle spin polarization in the AFEAM by switching between antiferroelectric and ferroelectric states. Our findings not only enrich the understanding of magnetoelectric coupling but also pave the way for electrically controlled spintronic and multiferroic devices.

关键词： Perovskite

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A novel core-shell rifampicin/isoniazid electrospun nanofiber membrane for long time drug dissolution

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Engineered Regeneration 2022年第1期3卷 73-79页

作者： Chenxi Li Yueqi Liu Ming Wei Jun Liu Xiaomin Yu Ping Hu Yong Liu Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Mechanical and Electric Engineering Beijing University of Chemical TechnologyBeijing 100029China Department of Infectious Disease and Clinical Microbiology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Rifampicin(RIF)and isoniazid(INH)are commonly applied jointly in clinical to improve the treatment efficacy of *** to the metabolism of the kidneys,most of RIF and INH would be excreted by human bodies after reaching a high drug concentration,which causes serious waste of drugs and does harm to our *** this study,polylactic acid(PLLA)was chosen as the carrier to prepare core-shell drug-loaded nanofibers with RIF in the shell and INH in the core by coaxial *** results showed that the average diameter of the core-shell drug-loaded fibers with an obvious core-shell structure was about 650 *** of RIF and INH in the fibers became amorphous;the rest maintained *** combination of PLLA and RIF made the fibers obvious hydrophobic and exhibited a slowly phased sustained-dissolve property during in vitro dissolution *** in vitro antibacterial experiments confirmed that the core-shell drug-loaded nanofibers had a favorite inhibitory effect on Staphylococcus aureus,which endowed practical medical value to the *** core-shell drug-loaded nanofibers effectively separated RIF and INH,preventing the degradation of RIF caused by the direct contact of the two *** slow-dissolve characteristics can maintain a relatively stable drug concentration and avoid the damage to the human body caused by the quick dissolve and rapid metabolism of *** combination with coaxial electrospinning fills the gap in the core-shell system with two drugs and has great significance in the future.

关键词： Dual drug delivery Core-shell structure Coaxial electrospinning Phased sustained-dissolve Staphylococcus aureus

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