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In-situ polymerized PEO-based solid electrolytes contribute better Li metal batteries:Challenges,strategies,and perspectives

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Journal of Energy Chemistry 2024年第5期92卷 548-571页

作者： Zhihui Jia Yong Liu Haoming Li Yi Xiong yingjie miao Zhongxiu Liu Fengzhang Ren School of Materials Science and Engineering Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologyHenan University of Science and TechnologyLuoyang 471023HenanChina Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal new Materials and Advanced Processing Technology Henan University of Science and TechnologyLuoyang 471023HenanChina

Polyethylene oxide(PEO)-based solid polymer electrolytes(SPEs)with good electrochemical stability and excellent Li salt solubility are considered as one of the most promising SPEs for solid-state lithium metal batteries(SSLMBs).However,PEO-based SPEs suffer from low ionic conductivity at room temperature and high interfacial resistance with the electrodes due to poor interfacial contact,seriously hindering their practical *** an emerging technology,in-situ polymerization process has been widely used in PEO-based SPEs because it can effectively increase Li-ion transport at the interface and improve the interfacial contact between the electrolyte and ***,we review recent advances in design and fabrication of in-situ polymerized PEO-based SPEs to realize enhanced performance in *** merits and current challenges of various SPEs,as well as their stabilizing strategies are ***,various in-situ polymerization methods(such as free radical polymerization,cationic polymerization,anionic polymerization)for the preparation of PEO-based SPEs are *** addition,the application of in-situ polymerization technology in PEO-based SPEs for adjustment of the functional units and addition of different functional filler materials was systematically discussed to explore the design concepts,methods and working ***,the challenges and future prospects of in-situ polymerized PEO-based SPEs for SSLMBs are also proposed.

关键词： In-situ polymerization Polyethylene oxide Solid polymer electrolytes Lithium metal anodes

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Synthesis and application of single-atom catalysts in sulfur cathode for high-performance lithium–sulfur batteries

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Chinese Chemical Letters 2023年第1期34卷 73-83页

作者： yingjie miao Yufan Zheng Feng Tao Zhijun Chen Yi Xiong Fengzhang Ren Yong Liu Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science and Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China School of Intelligent Manufacturing Ecosystem Xi’an Jiaotong–Liverpool UniversitySuzhou 215123China Luoyang Bearing Research Institute Co. Ltd.Luoyang 471039China

Lithium–sulfur(Li-S)batteries are regarded as one of the most promising energy storage devices because of their low cost,high energy density,and environmental ***,Li-S batteries suffer from sluggish reaction kinetics and serious“shuttle effect”of lithium polysulfides(LiPSs),which causes rapid decay of battery capacity and prevent their practical *** address these problems,introducing single-atom catalysts(SACs)is an effective method to improve the electrochemical performance of Li-S batteries,due to their high catalytic efficiency and definite active sites for *** this paper,we summarized the latest developments in enhancing the electrochemical performance of cathode for Li-S batteries through introducing different ***,we briefly introduced the catalytic mechanism of SACs and discussed the strategies of synthesizing SACs,including the spatial confinement strategy and the coordination design ***,the challenges and prospects in this field are *** believe that this review would help to design and fabricate high-performance Li-S batteries via introducing SACs and boost their practical application.

关键词： Single-atom catalysts Lithium-sulfur batteries Sulfur cathode Synthesis and application Polysulfide conversion Shuttle effect

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Emerging Carbon Nanotube-Based Nanomaterials for Stable and Dendrite-Free Alkali Metal Anodes:Challenges,Strategies,and Perspectives

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Energy & Environmental Materials 2023年第6期6卷 50-72页

作者： Zhongxiu Liu Yong Liu yingjie miao Guilong Liu Renhong Yu Kunming Pan Guangxin Wang Xinchang Pang Jianmin Ma Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Longmen Laboratory Luoyang 471023China Key Laboratory of Function-Oriented Porous Materials of Henan Province College of Chemistry and Chemical EngineeringLuoyang Normal UniversityLuoyang 471934China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Alkali metals(Li,Na,and K)are promising candidates for high-performance rechargeable alkali metal battery anodes due to their high theoretical specific capacity and low electrochemical ***,the actual application of alkali metal anodes is impeded by the challenges of alkali metals,including their high chemical reactivity,uncontrolled dendrite growth,unstable solid electrolyte interphase,and infinite volume expansion during cycling *** carbon nanotube-based nanomaterials in alkali metal anodesis an effective solution to these *** nanomaterials have attracted widespread attention owing to their unique properties,such as their high specific surface area,superior electronic conductivity,and excellent mechanical *** the rapidly growing research enthusiasm for this topic in the last several years,we review recent progress on the application of carbon nanotube-based nanomaterials in stable and dendrite-free alkali metal *** merits and issues of alkali metal anodes,as well as their stabilizing strategies are ***,the relationships among methods of synthesis,nano-or microstructures,and electrochemical properties of carbon nanotube-based alkali metal anodes are systematically *** addition,advanced characterization technologies on the reaction mechanism of carbon nanotube-based nanomaterials in alkali metal anodes are also ***,the challenges and prospects for future study and applications of carbon nanotube-based AMAs in high-performance alkali metal batteries are discussed.

关键词： alkali metal anodes carbon nanotube dendrite free electrochemical performance nanomaterials

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Different surface modification methods and coating materials of zinc metal anode

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Journal of Energy Chemistry 2022年第3期31卷 397-412,I0011页

作者： Feng Tao Yong Liu Xinyuan Ren Jing Wang Yazhou Zhou yingjie miao Fengzhang Ren Shizhong Wei Jianmin Ma Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023HenanChina National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of High-Temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471003HenanChina School of Art&Design Henan University of Science and TechnologyLuoyang 471023HenanChina School of Physics and Electronics Hunan UniversityChangsha 410082HunanChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina

Rechargeable aqueous Zn-ion batteries(AZIBs)are one of the most promising energy storage devices for large-scale energy storage owing to their high specific capacity,eco-friendliness,low cost and high ***,zinc metal anodes suffer from severe dendrite growth and side reactions,resulting in the inferior electrochemical performance of *** address these problems,surface modification of zinc metal anodes is a facile and effective method to regulate the interaction between the zinc anode and an *** this review,the current challenges and strategies for zinc metal anodes are ***,recent advances in surface modification strategies to improve their electrochemical performance are concluded and ***,challenges and prospects for future development of zinc metal anodes are *** hope this review will be useful for designing and fabricating highperformance AZIBs and boosting their practical applications.

关键词： Zn-ion batteries Zinc metal anode Surface modification Solvent casting method Wet chemistry method

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基线老年营养风险指数与多发性骨髓瘤预后的关系

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现代肿瘤医学 2024年第16期32卷 3051-3059页

作者：缪颖洁岳延华周怡芳曹阳陈惠娟沈洋灵郭嫣婷顾伟英苏州大学附属第三医院常州市第一人民医院血液科江苏常州213003

目的:探讨老年营养风险指数(GNRI)与初诊多发性骨髓瘤(MM)患者预后的关系。方法:选取2010年5月至2022年9月在我院就诊并规范治疗的107例60岁以上初诊MM患者,基于受试者工作特征(ROC)曲线计算出GNRI的最佳截断值,比较高GNRI组和低GNRI组... 详细信息

目的:探讨老年营养风险指数(GNRI)与初诊多发性骨髓瘤(MM)患者预后的关系。方法:选取2010年5月至2022年9月在我院就诊并规范治疗的107例60岁以上初诊MM患者,基于受试者工作特征(ROC)曲线计算出GNRI的最佳截断值,比较高GNRI组和低GNRI组基线资料、无进展生存期(PFS)、总生存期(OS)的差异;采用Kaplan-Meier进行生存分析并绘制生存曲线,Log-rank检验比较组间生存差异,Cox比例风险模型进行多因素分析,对年龄、细胞遗传学、血肌酐水平分层绘制生存曲线进行亚组分析。结果:107例患者的中位年龄为68(60~86)岁,其中男性62例(57.9%),女45例(42.1%),中位PFS为26个月,中位OS为39个月。基于ROC曲线得出GNRI的最佳截断值为99,低GNRI组中位PFS和OS均较高GNRI组短(17 vs 47,P=0.014;29 vs 63,P=0.015)。多因素分析显示,GNRI≤99(HR 0.485,95%CI 0.253~0.930,P=0.029)、高危细胞遗传学(HR 2.062, 95%CI 1.180~3.603,P=0.011)、血肌酐> 177μmol/L(HR 2.316,95%CI 1.160~4.626,P=0.017)是影响老年MM患者OS的独立预后危险因素。亚组分析显示,截至末次随访,初诊年龄为60~65岁或血清肌酐水平≤177μmol/L患者中低GNRI组的中位OS(22 vs未达到,P=0.002;39 vs 64,P=0.019)和中位PFS(15 vs未达到,P=0.001 9;26 vs 63,P=0.012)更短,高危细胞遗传学患者中低GNRI组的中位PFS(15 vs 49.5,P=0.032)更短。结论:GNRI评分对老年MM患者预后有潜在评估价值,且GNRI≤99的患者PFS和OS更短。

关键词：多发性骨髓瘤老年营养风险指数预后分析

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Test of the Brans–Dicke theory with GW200105 and GW200115

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Communications in Theoretical Physics 2024年第07期76卷 85-95页

作者： Qin Fei yingjie Yang Department of Mathematics and Physics School of Biomedical Engineering Southern Medical University School of Mathematics and Physics Hubei Polytechnic University

We study whether it is possible to constrain the Brans–Dicke（BD） theory from the measurement of gravitational waves（GW） released in neutron star-black hole collisions. Considering the scalar field modifications through monopole and dipole radiations, we find additional contributions to the phase evolution in the emitted gravitational waveform. After effectively calculating such effect in the post-Newtonian order, we are in a position to measure the scalar field and give bounds on the BD coupling parameter ωBD. We derive the analytical expression for the phase modification due to the orbital eccentricity of eccentric binaries in both general relativity and BD theory. Employing the Bayesian analysis, we obtain the constraints on ωBDfrom the GW events, GW200105 and GW200115.

关键词： Brans-Dicke theory cosmology gravitational wave

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A credible traffic prediction method based on self-supervised causal discovery

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Science China(Information Sciences) 2024年第5期67卷 244-258页

作者： Dan WANG yingjie LIU Bin SONG State Key Laboratory of Integrated Services Networks Xidian University

Next-generation wireless network aims to support low-latency, high-speed data transmission services by incorporating artificial intelligence(AI) technologies. To fulfill this promise, AI-based network traffic prediction is essential for pre-allocating resources, such as bandwidth and computing power. This can help reduce network congestion and improve the quality of service(QoS) for users. Most studies achieve future traffic prediction by exploiting deep learning and reinforcement learning, to mine spatio-temporal correlated variables. Nevertheless, the prediction results obtained only by the spatio-temporal correlated variables cannot reflect real traffic changes. This phenomenon prevents the true prediction variables from being inferred, making the prediction algorithm perform poorly. Inspired by causal science, we propose a novel network traffic prediction method based on self-supervised spatio-temporal causal discovery(SSTCD). We first introduce the Granger causal discovery algorithm to build a causal graph among prediction variables and obtain spatio-temporal causality in the observed data, which reflects the real reasons affecting traffic ***, a graph neural network(GNN) is adopted to incorporate causality for traffic prediction. Furthermore,we propose a self-supervised method to implement causal discovery to to address the challenge of lacking ground-truth causal graphs in the observed data. Experimental results demonstrate the effectiveness of the SSTCD method.

关键词： wireless network traffic prediction causal discovery self-supervised

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Enhancing transboundary natural tourism resources governance:unveiling the spatial pattern and its influencing factors

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Journal of Mountain Science 2024年第3期21卷 973-986页

作者： ZHANG Shengrui ZHANG Tongyan JU Hongrun WANG yingjie Management College Ocean University of ChinaQingdao 266100China School of Tourism and Geography Science Qingdao UniversityQingdao 266071China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China

Tourism resources that span provincial boundaries in China play a pivotal role in regional development,yet effective governance poses persistent *** study addresses this issue by constructing a comprehensive database of transboundary natural tourism resources(TNTR)through amalgamation of diverse data *** the Getis-Ord Gi^(*),kernel density estimation,and geographical detectors,we scrutinize the spatial patterns of TNTR,focusing on both named and unnamed entities,while exploring the influencing *** findings reveal 7883 identified TNTR in China,with mountain tourism resources emerging as the predominant *** provinces,Hunan boasts the highest count,while Shanghai exhibits the *** China demonstrates a pronounced clustering trend in TNTR distribution,with the spatial arrangement of biological landscapes appearing more random compared to geological and water *** China,characterized by intricate terrain,exhibits fewer TNTR,concurrently unveiling a significant presence of unnamed natural tourism ***,administrative segmentation influences TNTR development,generating disparities in regional goals,developmental stages and intensities,and management *** response to these variations,we advocate for strengthening the naming of the unnamed transboundary tourism resources,constructing a geographic database of TNTR for government and establishing a collaborative management mechanism based on TNTR *** research contributes to elucidating the intricate landscape of TNTR,offering insights for tailored governance strategies in the realm of cross-provincial tourism resource management.

关键词： Transboundary natural tourism resources(TNTR) Spatial difference Spatial autocorrelation Governance optimization China

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Improved Simulation of Summer Heavy Rainfall over Beijing and Henan by the YHGSM with Updated Subgrid Orographic Parameters

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Journal of Meteorological Research 2024年第3期38卷 504-529页

作者： yingjie WANG Jianping WU Kaijun REN College of Computer Science and Technology National University of Defense TechnologyChangsha410600China College of Meteorology and Oceanography National University of Defense TechnologyChangsha410600China

In numerical weather prediction(NWP),the parameterization of orographic drag plays an important role in representing subgrid orographic *** subgrid orographic parameters are the key input to the parameterization of orographic ***,the subgrid orographic parameters in most NWP models were produced based on elevation datasets generated many years ago,with a coarse resolution and low *** this paper,using the latest high-quality elevation data and considering the applicable scale range of the subgrid orographic parameters,we construct the orographic parameters,including the subgrid orographic standard deviation,anisotropy,orientation,and slope,that are required as input to the orographic gravity wave drag(OGWD)***,we introduce the newly constructed orographic parameters into the Yin-He Global Spectral Model(YHGSM),optimize the description of the orographic effect in the model,and improve the simulation of two typical heavy rainfall events in Beijing and Henan.

关键词： subgrid orographic parameters orographic drag heavy rainfall Yin-He Global Spectral Model(YHGSM) parameterization

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Controlling secondary flow in high-lift low-pressure turbine using boundary-layer slot suction

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Chinese Journal of Aeronautics 2024年第3期37卷 21-33页

作者： Xiao QU Liunan LI yingjie ZHANG Xingen LU Junqiang ZHU Yanfeng ZHANG School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Light-Duty Gas-Turbine Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China School of Aeronautics and Astronautics University of Chinese Academy of SciencesBeijing 100190China

The design of high-lift Low-Pressure Turbines(LPTs)causes the separation of the boundary layer on the suction side of the blade and leads to a strong secondary *** present study aims to minimize secondary losses through endwall slot suction and incoming wakes in a front-loaded high-lift LPT cascade with Zweifel of 1.58 under low Reynolds number of *** slotted schemes for the boundary layer of the endwall were designed(Plan A and Plan B),and the effects of suction mass flow on secondary flow were *** underlying physics of the endwall boundary layer of the suction and secondary flow under unsteady wakes was *** results show that slot suction at the endwall boundary layer can significantly suppress the secondary flow by removing low-momentum *** A and B significantly reduced the secondary kinetic energy by 44.2%and 36.9%,respectively,compared with the baseline cascade at the suction mass flow ratios of 1%.With an increase in the mass flow ratio of suction,the secondary flow was gradually reduced in both Plans A and *** is more beneficial to control the secondary flow to destroy the intersection of the pressure side and suction side of the horseshoe vortex before it develops into a passage *** unsteady wakes,the combined effects of incoming wakes and endwall boundary layer suction can further suppress the secondary flow at the suction mass flow ratios of 2%for Plan A,because the positive and negative vorticity inside upstream wakes accelerated the mixing of the main flow and secondary flow and thus increased the energy of secondary vortices.

关键词： Low-pressure turbine Secondary flow Flow control Boundary-layer suction Incoming wake

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