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Selection of Negative Charged Acidic Polar Additives to Regulate Electric Double Layer for Stable Zinc Ion Battery

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Nano-Micro Letters 2024年第12期16卷 342-356页

作者： Xing Fan Lina Chen Yongjing Wang Xieyu xu Xingxing Jiao Peng Zhou Yangyang Liu Zhongxiao Song {1. Zhou State Key Laboratory for mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Materials Science and engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055People’s Republic of China Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031People’s Republic of China Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China School of Materials Science and engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional MaterialsCentral South UniversityChangsha 410083People’s Republic of China

Zinc-ion batteries are promising for large-scale electrochemical energy storage systems,which still suffer from interfacial issues,e.g.,hydrogen evolution side reaction(HER),self-corrosion,and uncontrollable dendritic Zn *** the regulation of electric double layer(EDL)has been verified for interfacial issues,the principle to select the additive as the regulator is still ***,several typical amino acids with different characteristics were examined to reveal the interfacial behaviors in regulated EDL on the Zn *** charged acidic polarity(NCAP)has been unveiled as the guideline for selecting additive to reconstruct EDL with an inner zincophilic H_(2)O-poor layer and to replace H_(2)O molecules of hydrated Zn^(2+)with NCAP *** the synergistic effects of EDL regulation,the uncontrollable interface is significantly stabilized from the suppressed HER and anti-self-corrosion with uniform ***,by adding NCAP glutamate,a high average Coulombic efficiency of 99.83%of Zn metal is achieved in Zn|Cu asymmetrical cell for over 2000 cycles,and NH4V4O1.|Zn full cell exhibits a high-capacity retention of 82.1%after 3000 cycles at 2 A g^(-1..Recapitulating,the NCAP principle posted here can quicken the design of trailblazing electrolyte additives for aqueous Zn-based electrochemical energy storage systems.

关键词： Aqueous Zn-ion batteries Zn metal anode Negative charged acidic polar additives Electric double-layer regulation

Covalent Organic Framework with 3D Ordered Channel and Multi-Functional Groups Endows Zn Anode with Superior Stability

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Nano-Micro Letters 2024年第4期16卷 350-363页

作者： Bin Li Pengchao Ruan Xieyu xu Zhangxing He Xinyan Zhu Liang Pan Ziyu Peng Yangyang Liu Peng Zhou Bingan Lu Lei Dai {1. Zhou School of Chemical engineering North China University of Science and TechnologyTangshan 063009People’s Republic of China School of Materials Science and engineering Central South UniversityChangsha 410083People’s Republic of China State Key Laboratory for mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China Hunan Provincial Key Defense Laboratory of High Temperature Wear‑Resisting Materials and Preparation Technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable growth of Zn dendrite and severe side reactions including hydrogen evolution reaction,corrosion,and passivation,***,an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups(COF-S-F)is developed on Zn metal(Zn@COF-S-F)as the artificial solid electrolyte interface(SEI).Sulfonic acid group(-SO_(3)H)in COF-S-F can effectively ameliorate the desolvation process of hydrated Zn ions,and the three-dimensional channel with fluoride group(-F)can provide interconnected channels for the favorable transport of Zn ions with ion-confinement effects,endowing Zn@COF-S-F with dendrite-free morphology and suppressed side ***,Zn@COF-S-F symmetric cell can stably cycle for 1.000 h with low average hysteresis voltage(50.5 m V)at the current density of 1.5 m A cm^(-2).Zn@COF-S-F|Mn O_(2)cell delivers the discharge specific capacity of 206.8 m Ah g^(-1.at the current density of 1.2 A g^(-1.after 800 cycles with high-capacity retention(87.9%).Enlightening,building artificial SEI on metallic Zn surface with targeted design has been proved as the effective strategy to foster the practical application of high-performance AZIBs.

关键词： Aqueous Zn ion batteries Covalent organic framework Interfacial modification Zn ion flux regulation Desolvation effect

The influence of stress-dependent overpotential on dendrite growth in all-solid-state battery with cracks

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Science china(Technological Sciences) 2024年第8期67卷 2493-2504页

作者： ZHANG ZhenHua ZHANG Yong LIU Chang HOU xu WANG Jie department of {1. Mechanics School of Aeronautics and AstronauticsZhejiang UniversityHangzhou 310027China Zhejiang Laboratory Hangzhou 311100China Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang UniversityHangzhou 310027China School of Aerospace engineering and Applied Mechanics Tongji UniversityShanghai 200092China Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province School of Mechanics and Aerospace EngineeringSouthwest Jiaotong UniversityChengdu 610031China department of Industrial and Systems {1. The Hong Kong Polytechnic UniversityHong Kong 999077China

Dendrite growth is one of the main challenges in maintaining the service life of all-solid-state lithium-ion *** stress has been reported to significantly affect dendrite *** this study,to explain the effect of mechanical stress on electrochemical reactions in all-solid-state batteries,a modified phase-field model for dendrite growth is proposed by considering the stress-dependent *** growth under different mechanical loadings in an all-solid-state battery is investigated using the proposed *** with previous experimental results,the current result shows that compressive stress inhibits dendrite *** the stress concentration at the tips of processing-induced microcracks,the effects of the number and distribution of microcracks on dendrite growth are *** results show that the stress-concentration field induced at the tips of cracks or voids can change the morphology of dendrites and decrease their growth *** study provides a new perspective for explaining Li dendrite growth under mechanical stress and offers inspiration for prolonging the service life of all-solid-state batteries based on defect and stress regulation,which may be further realized in experiments by filling solid electrolytes with different types of nanofillers.

关键词： Butler–Volmer equation stress-dependent overpotential microcracks all-solid-state battery phase-field simulation

高雷诺数下覆羽控制直翼型流动分离的位置影响实验

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Acta Mechanica Sinica 2024年第4期40卷 125-135页

作者：巩绪安马兴宇姜楠 department of Mechanics School of Mechanical EngineeringTianjin UniversityTianjin300354China National Key Laboratory of Aerodynamic Noise Control China Aerodynamics Research and Development CenterSichuan621000China National Key Laboratory of Science and Technology on Aerodynamic Design and Research School of AeronauticsNorthwestern Polytechnical UniversityXi’an710072China State Key Laboratory of Rail Transit Vehicle System Southwest Jiaotong UniversityChengdu610031China

本文在二维机翼上安装了仿生的覆羽结构,在5.0×1.5的雷诺数下研究它们控制前缘流动分离的效果.覆羽是指覆盖在鸟类翅膀上的多排短而柔软的带有锯齿状尖端的羽毛.它们覆盖在长而硬的飞羽边缘,使鸟的翅膀保持流线型.当流动分离发生时,这... 详细信息

本文在二维机翼上安装了仿生的覆羽结构,在5.0×1.5的雷诺数下研究它们控制前缘流动分离的效果.覆羽是指覆盖在鸟类翅膀上的多排短而柔软的带有锯齿状尖端的羽毛.它们覆盖在长而硬的飞羽边缘,使鸟的翅膀保持流线型.当流动分离发生时,这些柔性锯齿形的人工覆羽在来流的激励下能够自适应地变形和颤振.在风洞实验中,本文使用高时间分辨率的粒子图像测速仪(PIV)来测量机翼上表面的速度场,并使用热线风速仪来测量尾流中的高频湍流脉动.安装在20%弦长处的人工覆羽在前缘分离流的激励下会自适应地大幅翻转.安装在80%弦长处的覆羽则会被尾缘卷起的脱落涡向上抬起,并在准平衡状态下轻微摆动.这两类人工覆羽均能够有效地控制流动分离,并减小尾流的湍流脉动强度.

关键词：流动分离风洞实验分离流湍流脉动高时间分辨率热线风速仪高雷诺数锯齿形

第三系半成岩富水砂岩隧道水平高压旋喷桩复合结构超前预加固研究

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岩土力学 2024年第8期45卷 2462-2473页

作者：王秋懿张海涛张金江徐华王清华许劲松云南省交通投资建设集团有限公司云南昆明650100 成都理工大学环境与土木工程学院四川成都610059 四川省复杂地质TBM智能掘进与灾害防控工程技术研究中心四川成都610059 西南交通大学土木工程学院四川成都610031 同济大学土木工程学院上海200092

在诸如第三系半成岩地层等富水软弱均质地层的隧道建设中,常采用水平高压旋喷桩进行洞内超前预加固,但水平旋喷桩往往因自身抗拉强度低在承受较大荷载时容易发生断裂破坏。依托云南临沧至清水河高速公路王家寨隧道工程,提出了一种在桩...

在诸如第三系半成岩地层等富水软弱均质地层的隧道建设中,常采用水平高压旋喷桩进行洞内超前预加固,但水平旋喷桩往往因自身抗拉强度低在承受较大荷载时容易发生断裂破坏。依托云南临沧至清水河高速公路王家寨隧道工程,提出了一种在桩体内插入小直径钢管的水平高压旋喷复合结构。通过力学理论分析、数值模拟与现场监测,对比分析了水平高压旋喷桩素桩与复合结构的力学机制与对围岩加固作用,并对钢管布置形式及直径进行优化设计。研究表明:在300 kPa水压下,复合结构相比素桩的挠度值降低了34.8%,最大拉应力降低了37.5%,受力模式明显改善,承受的极限水压力荷载大幅提升至700 kPa,对围岩拱顶沉降、应力也有一定削减作用;增加拱顶钢管布置密度可有效降低桩体拉应力,而减少钢管直径则会导致钢管拉应力增大;建议实际工程中拱顶间隔1.桩体布置1.8 mm钢管,拱肩间隔2~3根布置89 mm钢管,边墙可不设钢管。

关键词：第三系半成岩水平高压旋喷桩钢管复合结构受力机制极限水压荷载

Simulation of Temperature Field in Original Segment of Concrete Box-Girder Bridge

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Journal of southwest {1. university(English Edition) 2009年第2期17卷 102-108页

作者：徐丰徐雯王波 School of Civil engineering and Mechanics Huazhong University of Science and Technology School of Civil engineering and Architecture Wuhan University

Temperature field and its variation with time are necessary for analyzing the thermo-mechanical performance of mass concrete structures at their early ages. This paper carries out a temperature field simulation analysis for an original segment of a real box girder bridge with the finite element software ANSYS. Two representative exothermic rate models are used to describe the heat- releasing process caused by the cement hydration in concrete. The exothermic rate model that conforms to reality more closely is recognized by comparing the simulation results with the data gathered from the optical fiber temperature sensors pre-embedded in the original segment. The air temperature and wind velocity that constitute thermal boundary conditions are determined in the light of the local meteorological {1. and correlative research achievements of recent years. Moreover, the consideration for the steel formwork acting as a barrier to heat loss is also proved to be beneficial to improve the simulation effect.

关键词： Concrete box-girder bridge Original segment Thermal analysis Hydration heat Numerical simulation

基于辛Runge-Kutta方法的棋盘形褶皱二维薄膜-基底结构动力学特性研究

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计算力学学报 2024年第1期41卷 186-193页

作者：张博涵曹善成王博欧阳华江徐方暖西北工业大学工程力学系西安710072 西北工业大学航天学院西安710072 西南交通大学机械工程学院成都610031 大连理工大学工业装备结构分析优化与CAE软件全国重点实验室大连116024

基于力学屈曲原理的褶皱薄膜-基底结构已成功应用于制备可延展无机电子器件。然而,该类电子器件在应用时需要服役于复杂动态环境中,针对棋盘形褶皱薄膜结构的动力学问题鲜有研究,此问题又是该类电子器件走向实际应用需要解决的关键问题...

基于力学屈曲原理的褶皱薄膜-基底结构已成功应用于制备可延展无机电子器件。然而,该类电子器件在应用时需要服役于复杂动态环境中,针对棋盘形褶皱薄膜结构的动力学问题鲜有研究,此问题又是该类电子器件走向实际应用需要解决的关键问题之一。本文首先采用能量方法,分别计算了二维薄膜的弯曲能、膜弹性能和柔性基底中的弹性能以及薄膜动能;然后采用拉格朗日方程,推导出了该结构的振动控制方程;而该方程为非线性动力学方程,无法给出其解析解;因此,本文采用辛Runge-Kutta方法对其进行数值求解;数值结果表明,辛数值方法具有长期稳定的特性和系统结构特性,为高精度的可延展电子器件的动力学问题研究提供了优异的数值方法。

关键词：可延展电子器件薄膜-基底结构辛算法保结构

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A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

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Research in Astronomy and Astrophysics 2024年第10期24卷 25-35页

作者： Yi Zhao Wangchen xue Shaolin Xiong Qi Luo Yuanhao Wang Jiacong Liu Heng Yu Xiaoyun Zhao Yue Huang Jinyuan Liao Jianchao Sun Xiaobo Li Qibin Yi Ce Cai Shuo Xiao Shenglun Xie Chao Zheng Yanqiu Zhang Chenwei Wang Wenjun Tan Zhiwei Guo Chaoyang Li Zhenghua An Gang Chen Yanqi Du Min Gao Ke Gong Dongya Guo {1. He Jianjian He Bing Li Gang Li Xinqiao Li Jing Liang Xiaohua Liang Yaqing Liu Xiang Ma Rui Qiao Liming Song Xinying Song Xilei Sun Jin Wang Ping Wang Xiangyang Wen Hong Wu Yanbing xu Sheng Yang Dali Zhang Fan Zhang Hongmei Zhang Peng Zhang Shu Zhang Zhen Zhang Shijie Zheng Keke Zhang Xingbo Han Haiyan Wu Hu Tai Hao Geng Gaopeng Lu Wei xu Fanchao Lyu Hongbo Zhang Fangjun Lu Shuangnan Zhang department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China College of Physics Hebei Normal UniversityShijiazhuang 050024China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Institute of Astrophysics Central China Normal UniversityWuhan 430079China College of physics Sciences Technology Hebei UniversityBaoding 071002China Physics and Space Science College China West Normal UniversityNanchong 637002China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China College of Electronic and information engineering Tongji UniversityShanghai 201804China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201304China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Electronic Information School Wuhan UniversityWuhan 430072China Key Laboratory of Transportation Meteorology of china Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up *** based on the relative counts of different detectors has been widely used for all-sky gamma-ray *** are two major methods for this count distribution localization:χ^(2)minimization method and the Bayesian *** we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ^(2)*** comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ^(2)method,especially for weak *** further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location *** method is very suitable for scenarios with limited computation resources or timesensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

关键词： methods:data analysis methods:analytical (stars:)gamma-ray burst:general

Multi-componential metal intercalated graphite hybrids synthesized by co-intercalation polymerization towards highefficient microwave absorptions

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Nano Research 2023年第5期16卷 6369-6379页

作者： Junhua Su Qinbo Ma Longkun Que Hunan jiang Xiaoling {1. Yong Wang Yifan Guo Zuowan Zhou Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China School of Chemistry Southwest Jiaotong UniversityChengdu 610031China Yibin Research Institute Southwest Jiaotong UniversityYibin 644000China School of mechanical {1. Southwest Jiaotong UniversityChengdu 610031China Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

Magnetic expanded graphite(EG)hybrids were synthesized by co-intercalation polymerization of aniline together with transition metal *** results show that metal ions(Fe,Co,Ni,Cu)and even their mixtures can co-intercalate into graphite interlayers with flexibly controllable ratios and *** these co-intercalation compounds,Fe/Ni-intercalated graphite with a predesigned mole ratio of 1.3 transforms into NiFe_(2)O_(4)/FeNi_(3)@EG during the annealing *** synthesized magnetic EG hybrids present multiband microwave absorption in C and X bands due to improved impedance match as well as significantly enhanced interfacial polarization relaxation induced by multi-componential *** reflection values of−39.1.dB at 6.95 GHz and−25.7 dB at 9.4 GHz are achieved with an ultra-low loading of 5 wt.%.This work provides a flexible approach for tuning the components and structures of magnetic EG hybrids,which may contribute to the development of microwave absorption materials with superior performances.

关键词： co-intercalation intercalation polymerization expanded graphite transition metal microwave absorption