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Journal of Materials science & Technology 2024年第2期169卷 105-114页

作者： deqing He Chunyu Zhu Yutao Huo Zhonghao rao school of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Hebei Key Laboratory of Thermal science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China school of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(LiPss)are considered the main obstacle to the commercial application of lithium-sulfur(Li-s)*** accelerate the conversion by catalysis and inhibit the shuttling of soluble LiPss in Li-s batteries,a solution is proposed in this *** solution involves fabrication of N,s co-doped carbon coated In_(2)O_(3)/In_(2)s_(3)heterostructure(In_(2)O_(3)-In_(2)s_(3)@NsC)as a multifunctional host material for the *** In_(2)O_(3)-In_(2)s_(3)@NsC composite can reduce the Gibbs free energy for the conversion reactions of LiPss,which results in superior *** synergy between different components in In_(2)O_(3)-In_(2)s_(3)@NsC and the unique 3d structure facilitate ion and electron transport in Li-s *** In_(2)O_(3)-In_(2)s_(3)@NsC/Li 2 s 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 ***,this study proposes a promising solution to improve the energy storage properties of Li-s batteries,which could potentially facilitate the commercialization of Li-s batteries.

关键词： Li-s battery Multifunctional host material synergy Heterostructures Energy storage properties

The new challenges for the development of NH_(3)-sCr catalysts under new situation of energy transition in power generation industry

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Chinese Chemical Letters 2024年第6期35卷 95-103页

作者： Feibin Wei Yongfang rao Yu Huang Wei Wang Hui Mei science and Technology on Thermostructural Composite Materials Laboratory School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Key Laboratory of Aerosol Chemistry and Physics State Key Laboratory of Loess and Quaternary Geology(SKLLQG)Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710061China Center of Excellence in Quaternary science and Global Change Chinese Academy of SciencesXi’an 710061China University of Chinese Academy of sciences Beijing 100049China department of Environmental science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

NH_(3)-sCr was one of the most promising de NO_x technologies and it has been widely applied in industrial NO_x ***,with the further development of energy transformation in power generation sector,the development of NH_(3)-sCr catalysts is facing some new *** is becoming an urgent problem to solve low catalytic activity and stability of NH_(3)-sCr catalysts at the working condition of ultra-low temperature(≤200℃)and high concentrations of H_(2)O+sO_(2) due to the gradual deployment of new energy power ***,the traditional coal-fired power plants would need flexible operation with the increasing share of renewable energy *** NH_(3)-sCr catalysts which were applied in coal-fired power industry would be requested to work in a wide temperature window from 200℃ to 500℃ in the near ***,in this review,we summarized the progress of NH_(3)-sCr catalysts in solving these different industrial problems in recent *** the research directions which were deserved to be focused on the development of NH_(3)-sCr catalysts for the energy transition of power generation sector are proposed.

关键词： NH_(3)-sCr NOx reduction Power generation Ultra-low temperature Wide temperature windows

simulation study on Constraining Gravitational Wave Propagation speed by Gravitational Wave and Gamma-ray Burst Joint Observation on Binary Neutron star Mergers

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research in Astronomy and Astrophysics 2024年第8期24卷 42-51页

作者： Jin-Hui rao shu-Xu Yi Lian Tao Qing-Wen Tang department of Physics School of Physics and Materials ScienceNanchang UniversityNanchang 330031China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Theories of modified gravity suggest that the propagation speed of gravitational waves(GW)v_gmay deviate from the speed of light c.A constraint can be placed on the difference between c and v_gwith a simple method that uses the arrival time delay between GW and electromagnetic wave simultaneously emitted from a burst *** simulated the joint observation of GW and short gamma-ray burst signals from binary neutron star merger events in different observation campaigns,involving advanced LIGO(aLIGO)in design sensitivity and Einstein Telescope(ET)joint-detected with Fermi/*** a result,the relative precision of constraint on v_gcan reach~10~(-17)(aLIGO)and~10^(-18)(ET),which are one and two orders of magnitude better than that from GW170817,*** continue to obtain the bound of graviton mass m_g≤7.1(3.2)×10~(-20)eV with aLIGO(ET).Applying the standard-Model Extension test framework,the constraint on v_gallows us to study the Lorentz violation in the nondispersive,nonbirefringent limit of the gravitational *** obtain the constraints of the dimensionless isotropic coefficients s_(00)^(4)at mass dimension d=4,which are-1×10^(-15)s_(00)^(4)r aLIGO and-4×10^(-16)s_(00)^(4r ET.

关键词： gravitational waves-(stars)gamma-ray burst general-stars neutron

strong ferroelectric and luminescence properties of 0-3 type 0.8BaTiO_(3)-0.2CaTiO_(3):Pr^(3+)composite ceramics prepared by cold sintering process

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Journal of Advanced Ceramics 2024年第7期13卷 1002-1010页

作者： Xiaocui rao Xueling Yang renbing sun Peng du Hai Jiang Yao Huang Laihui Luo department of Microelectronics science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China College of Materials science and Engineering Ningbo University of TechnologyNingbo 315016China

0-3 type ferroelectric-phosphor composite ceramics cannot be prepared by the traditional solid-state sintering(sss)method due to the strong chemical reaction between ferroelectrics and phosphors during high-temperature *** cold sintering process(CsP)may solve this issue by densifying ceramics at ultralow sintering *** this work,dense 0-3 type 0.8BaTiO_(3)-0.2CaTiO_(3):Pr^(3+)(0.8BT-0.2CT:Pr^(3+))binary composite ceramics were fabricated at an ultralow temperature of 225℃via CsP with the Ba(OH)2·8H2O hydrated *** effects of the Ba(OH)_(2)·8H2O content,sintering temperature,and sintering time on the microstructure and densification of the ceramics were *** density of the composite ceramics prepared by the optimized sintering parameters reaches 89%.Both energy-dispersive X-ray(EdX)spectroscopy and X-ray diffraction(Xrd)confirm the existence of BT and CT:Pr^(3+)phases in the prepared ceramics.A strong ferroelectric performance is obtained,and the luminescent properties of CT:Pr^(3+)are preserved for the ***,the 0.8BT-0.2CT:Pr^(3+)composite ceramics prepared by CsP have stronger photoluminescence and photo-stimulated luminescence than their counterparts prepared by cold sintering assistance(CsA)and sss ***,CsP is a promising method for combining luminescent and ferroelectric properties into 0-3 type composite ceramics.

关键词： single-step densification cold sintering composite ceramics ferroelectric luminescence

Glass-Ceramics with High strength and High Transmittance Obtained by Multi-Factor Controlling

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Journal of Wuhan University of Technology(Materials science) 2024年第3期39卷 551-560页

作者：胡云坤 rao Yu WANG Mingzhong XU Yinsheng XIA Mengling TAO Haizheng 陆平 school of Materials science and Engineering Wuhan University of TechnologyWuhan 430070China Xianning CsG Photovoltaic Glass Co. Ltd.Xianning 437100China state Key Laboratory of silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Jincheng Optical-mechanical Industry research Institute Jincheng 048000China

The presence of Li_(2)si_(2)O_(5) and LiAlsi_(4)O_(10) could effectively improve the elastic modulus and transmittance of lithium disilicate(Ld)*** synergistically modulation of the crystal content and grain size,we obtained high strength and high transmittance of Ld *** optimal sample had a high transmittance of 90.3%,the hardness was 7.72 GPa,the fracture toughness was 1.07 MPa·m^(1/2),and the elastic modulus was 103.1 GPa.

关键词： lithium disilicate glass-ceramics transmittance mechanical properties

seismic risk Model for the Beijing–Tianjin–Hebei region, China:Considering Epistemic Uncertainty from the seismic Hazard Models

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International Journal of disaster risk science 2024年第3期15卷 434-452页

作者： Jian Ma Katsuichiro Goda Kai Liu silva Vitor Anirudh rao Ming Wang Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake Administration Key Laboratory of Earthquake disaster Mitigation Ministry of Emergency Management school of National safety and Emergency Management Beijing Normal University shenzhen Key Laboratory of Urban disasters digital Twin department of Earth sciences Western University Global Earthquake Model Foundation

This study presents a probabilistic seismic risk model for the Beijing–Tianjin–Hebei region in China. The model comprises a township-level residential building exposure model, a vulnerability model derived from the Chinese building taxonomy,and a regional probabilistic seismic hazard model. The three components are integrated by a stochastic event-based method of the OpenQuake engine to assess the regional seismic risk in terms of average annual loss and exceedance probability curve at the city, province, and regional levels. The novelty and uniqueness of this study are that a probabilistic seismic risk model for the Beijing–Tianjin–Hebei region in China is developed by considering the impact of site conditions and epistemic uncertainty from the seismic hazard model.

关键词： Beijing–Tianjin–Hebei region Epistemic uncertainty seismic risk assessment seismic risk model

Phase transition of multi-component(TiZrVNb)C ceramics—Part I:Phase decomposition induced by carbon content

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Journal of Advanced Ceramics 2024年第5期13卷 679-688页

作者： Qingyi Kong rao Zhang Lei Chen sijia Huo Wenyu Lu Yujin Wang Boxin Wei Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced structure‒Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China school of Materials science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150001China National Key Laboratory of Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

Phase decomposition can effectively enhance the mechanical properties of carbide ceramics and can overcome the difficulty of enhancing the mechanical properties of single-phase multicomponent carbide *** this work,a series of nonstoichiometric(TiZrVNb)Cx ceramics were prepared by spark plasma sintering(sPs)at different *** effects of the carbon content on the phase composition,microstructure evolution,and mechanical properties were investigated in *** decomposition occurred with decreasing carbon *** different solid solutions of(Ti,V)-rich and Zr-rich phases formed from the decomposition of equimolar single-phase solid solutions,namely,the Zr-poor phase and Zr-rich phase,*** distribution of Nb element is relatively *** semicoherent interfaces between the Zr-poor phase and the Zr-rich phase can harden and strengthen effectively under the synergistic effect of grain *** with phase decomposition structures have apparent advantages compared to single-phase high-entropy *** work provides an important train of thought for the microstructure tailoring and properties optimization of multi-component carbide ceramics.

关键词： multicomponent ceramics nontoichiometry microstructure evolution phase decomposition mechanical properties

selective leaching of lithium from spent lithium-ion batteries using sulfuric acid and oxalic acid

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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 688-696页

作者： Haijun Yu dongxing Wang shuai rao Lijuan duan Cairu shao Xiaohui Tu Zhiyuan Ma Hongyang Cao Zhiqiang Liu Institute of Advanced Wear&Corrosion resistant and Functional Materials Jinan UniversityGuangzhou 510632China Institute of resources Utilization and rare Earth development Guangdong Academy of SciencesGuangzhou 510650China state Key Laboratory of separation and Comprehensive Utilization of rare Metals Guangzhou 510650China Guangdong Province Key Laboratory of rare Earth development and Application Guangzhou 510650China

Traditional hydrometallurgical methods for recovering spent lithium-ion batteries(LIBs)involve acid leaching to simultaneously extract all valuable metals into the *** methods usually are followed by a series of separation steps such as precipitation,extraction,and stripping to separate the individual valuable *** this study,we present a process for selectively leaching lithium through the synergistic effect of sulfuric and oxalic *** optimal leaching conditions(leaching time of 1.5 h,leaching temperature of 70°C,liquid-solid ratio of 4 mL/g,oxalic acid ratio of 1.3,and sulfuric acid ratio of 1.3),the lithium leaching efficiency reached89.6%,and the leaching efficiencies of Ni,Co,and Mn were 12.8%,6.5%,and 21.7%.X-ray diffraction(Xrd)and inductively coupled plasma optical emission spectrometer(ICP-OEs)analyses showed that most of the Ni,Co,and Mn in the raw material remained as solid residue oxides and *** study offers a new approach to enriching the relevant theory for selectively recovering lithium from spent LIBs.

关键词： selective leaching oxalic acid sulfuric acid spent lithium-ion batteries

Ocean wave directional spectrum estimation using spatio-temporal array of acoustic ranging and current measurement

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Chinese Journal of Acoustics 2024年第3期43卷 311-331页

作者： rao Liang dENG Kai ZHANG Zhaowei WANG Changhong Institute of Acoustics Chinese Academy of SciencesBeijing100190 University of Chinese Academy of sciences Beijing100049 Beijing Engineering Technology research Center of Ocean Acoustic Equipment Beijing100190

An approach to estimate ocean wave directional spectrum using spatio-temporal array of acoustic ranging and current measurement is proposed,and the 5-beam acoustic doppler current profiler(AdCP)constructs a spatio-temporal array of acoustic ocean surface elevation tracking and acoustic doppler current velocity measuring for directional wave *** on the linear wave theory and the space-time equivalence principle,the time-space transfer function applicable to the spatio-temporal array is proposed,and then the time delay term is compensated in the calculation of the covariance *** method can reduce the error of the directional spectrum *** results show that for the low signal-to-noise ratio from 0 dB to 5 dB,compared with the 4-beam synchronous array method,this method has a smaller root-mean-square error of the peak estimation of the directional *** field test shows that,compared with the 4-beam synchronous array method,the 5-beam spatio-temporal array method improves the kurtosis index of the directional spectrum from 2.31 to 2.80,and the correlation coefficient between the peak wave direction results of the AdCP and the buoy is increased from 0.80 to 0.83 in mild wave ***,the spatio-temporal array method can increase the degree of freedom of wave measurement,reduce the minimum aperture of the array,and increase the upper cut-off frequency of the estimable directional spectrum.

关键词： spectrum ocean directional

Physiological Mechanism of Exogenous selenium in Alleviating Mercury stress on Pakchoi(Brassica campestris L.)

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 951-962页

作者： Chengxu Qian Qiangwen Chen Leiyu Jiang Xiaoyan Yang shen rao Weiwei Zhang Feng Xu College of Horticulture and Gardening Yangtze UniversityJingzhou434025China Enshi se-run Material Engineering Technology Co. Ltd.Enshi445000China Henry Fok school of Biology and Agricultural Shaoguan UniversityShaoguan512005China National r&d for se-rich Agricultural Products Processing Technology Wuhan Polytechnic UniversityWuhan430023China

The objective of this study was to explain the physiological mechanisms through which Na_(2)seO_(3) mitigates the growth and developmental inhibition of pakchoi under HgCl_(2)*** results showed that treatment with HgCl_(2)(40 mg L^(−1))led to reduced biomass,dwarfing,root shortening,and root tip necrosis in *** to control(CK),the activities of superoxide dismutase(sOd)and peroxidase(POd)in Hg treatment increased,and the content of malondialdehyde(MdA)also dramatically increased,which negatively impacted the growth of *** concentrations of Na_(2)seO_(3)(0.2 mg L^(−1))significantly increased the content of soluble sugars compared with control,while chlorophyll,soluble proteins,free amino acids,and vitamin C had no significant *** results of the mixed treatments with HgCl_(2)and Na_(2)seO_(3) suggested that selenium may be able to reduce the toxicity of mercury in *** biomass,plant height,root length,chlorophyll content,soluble protein,other physiological indicators,and proline showed significant increases compared with the HgCl_(2)***,the MdA content and mercury accumulation in pakchoi *** results revealed the antagonistic effects of selenium and mercury in ***,a theoretical basis for studying pakchoi’s mercuryexcreted and selenium-rich cultivation technology was provided.

关键词： selenium mercury stress pakchoi physiological properties antioxidant enzymes