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Monophase-homointerface electrodes intrinsically stabilize high-voltage all-solid-state batteries

Science China Chemistry 2024年第5期67卷 1729-1739页

作者： Xiaolin Xiong Xianguo ma Tianshi Lv Liquan Chen Liumin suo Beijing National Laboratory for Condensed matter Physics Institute of PhysicsChinese Academy of ScienceBeijing 100190China Center of materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

The electrochemical stability and contact reliability of heterointerfaces between the solid electrolyte(SE) and electrode are critical for all-solid-state batteries(ASSBs), particularly much more challenging for high-voltage ASSBs, owing to the limited thermodynamically electrochemical window and mechanical inflexibility of SE, aggravating interfacial side reactions and contact failure. Considering all those issues originating from intrinsic heterogeneity in physicochemical features between the cathode material and SE, we are thinking about simplifying the heterointerfaces into a homointerface as a permanent cure to solve all electrochemical-mechanical interfacial failure. Herein, we propose monophase cathodes to construct thermodynamically stable all-in-one homointerfaces in ASS electrodes, removing unstable heterointerfaces by excluding SEs and intrinsically eliminating the Li chemical potential gap to avoid the formation of lithium-depleted space-charge layer and highly resistive mixed ion–electron conductor interphase. Our conception is successfully validated in the layered transition-metal oxide cathodes, which display outstanding stability no matter the MH-LiCoO_(2) cathode charging to 4.7 V or MH-Li_(1.2)Mn_(0.54)Ni_(0.13)-Co_(0.13)O_(2) cathode charging to 5.3 V. It is undeniable that our current version of above-illustrated MH-cathodes would bring out some new challenges for the practical application due to abandoning the SE. However, we believe our work also offers a brandnew direction to ultimately address the electrochemical–mechanical interfacial issues that would be promising for high-energy ASSBs with more discoveries of advanced monophase cathodes in the future.

关键词： monophase-homointerface electrode high-voltage all-solid-state batteries electrochemical-mechanical interfacial issue

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Multi-point Layout Planning for Multi-energy Power System Based on Complex Adaptive System Theory

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CSEE Journal of Power and Energy Systems 2024年第5期10卷 2138-2146页

作者： Shuqiang Zhao Xun suo Yanfeng ma Ling Dong North China Electric Power University Baoding 071003China State Grid Qinghai Electric Power Company Qinghai 810000China

Aiming at the problem of multi-point layout planning of a multi-energy power system,the output characteristics of a multi-energy power system composed of wind power generation,photovoltaic power generation,hydropower generation,traditional thermal power generation and solar thermal power generation are comprehensively *** power optimization planning with complex adaptive system theory,a multi-point layout planning model of multi-energy sources based on complex adaptive system theory is *** model takes the minimum construction step size of each new energy source as the *** the interaction between the agents and the accumulation of experience,the behavior rules are constantly changed,the installed positions of various types of power sources are adjusted,and the optimal layout scheme of various power capacities of each node is ***,an agent modeling method based on a simple rule emerging complex phenomena is proposed,which reveals the core idea of complex adaptive system theory—adaptability makes *** an actual power grid in a certain region of China as an example,it is verified that the proposed method has a significant effect on improving the consumption of new energy,and has certain guiding significance for the actual engineering construction.

关键词： Agent modeling complementarity complex adaptive system multi-energy power system power planning

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The Mechanism of Cube Texture Formation in Ni-7 at%W Substrate

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Journal of Wuhan University of Technology(materials Science) 2024年第5期39卷 1260-1269页

作者： ZHAO Congcong suo Hongli JI Yaotang GAO mangmang ma Lin LIU Min School of materials Science and Engineering Beijing University of TechnologyBeijing 100124China College of materials and New Energy Ningxia UniversityYinchuan 750021China

In order to obtain the sharp cube texture,a new process,the intermediate annealing rolling technique,has been introduced to prepare the Ni7W *** this paper,a cubic texture content up to 98.5%within 10°of the standard cubic orientation is obtained in the final substrate and the influence of this improved rolling technique on the cube texture formation has been *** results show that the increased cube texture in the Ni7W substrate is caused by the optimized deformation texture and the increased nucleated fraction of the cube grains.

关键词： cube texture coated conductor deformation texture recrystallization

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Modified dynamic event-triggered scaled formation control for multi-agent systems via a sparrow search algorithm based co-design algorithm

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Frontiers of Information Technology & Electronic Engineering 2024年第2期25卷 197-213页

作者： Yanping YANG Siyu ma Dawei LI Jinghui suo College of Information Science and Technology Donghua UniversityShanghai201620China Engineering Research Center of Digitized Textile&Apparel Technology Donghua UniversityShanghai201620China State Key Laboratory for Modification of Chemical Fibers and Polymer materials College of Information Science and TechnologyDonghua UniversityShanghai201620China

This paper is concerned with the scaled formation control problem for multi-agent systems(maSs)over fixed and switching ***,a modified resilient dynamic event-triggered(DET)mechanism involving an auxiliary dynamic variable(ADV)based on sampled data is *** the proposed DET mechanism,a random variable obeying the Bernoulli distribution is introduced to express the idle and busy situations of communication ***,the operation of absolute value is introduced into the triggering condition to effectively reduce the formation ***,a scaled formation control protocol with the proposed resilient DET mechanism is designed over fixed and switching *** scaled formation error system is modeled as a time-varying delay ***,several sufficient stability criteria are derived by constructing appropriate Lyapunov-Krasovskii functionals(LKFs).A co-design algorithm based on the sparrow search algorithm(SSA)is presented to design the control gains and triggering parameters ***,numerical simulations of multiple unmanned aerial vehicles(UAVs)are presented to validate the designed control method.

关键词： Scaled consensus Formation control Dynamic event-triggered scheme Switching topology

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Electrocatalytic Performance of Carbon Layer and Spherical Carbon/Carbon Cloth Composites Towards Hydrogen Evolution from the Direct Electrolysis of Bunsen Reaction Product

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Chemical Research in Chinese Universities 2024年第1期40卷 109-118页

作者： ZHANG Wanjia GUO Tingyu LIU Yanhua ZHANG Xuewei ZOU Bo ZHAO Chun suo Hui WANG Hui ZHAO Xu College of Chemistry Jilin UniversityChangchun130012P.R.China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-SC/CC)was fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-SC/CC electrode was evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared with 4 g of glucose and annealed at 800°C showed excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 ma/***,the electrode demonstrated good stability with a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the SC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2SO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

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Minocycline in the eradication of Helicobacter pylori infection: A systematic review and meta-analysis

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World Journal of Gastroenterology 2024年第17期30卷 2354-2368页

作者： Kai Zhou Cai-Ling Li Hua Zhang Bao-Jun suo Yu-Xin Zhang Xin-Lu Ren Yu-Xin Wang Chang-Min Mi Ling-Ling ma Li-Ya Zhou Xue-Li Tian Zhi-Qiang Song Department of Gastroenterology Peking University Third HospitalBeijing 100191China

BACKGROUND Difficulty in obtaining tetracycline,increased adverse reactions,and relatively complicated medication methods have limited the clinical application of the classic bismuth quadruple ***,the search for new alternative drugs has become one of the research *** recent years,minocycline,as a semisynthetic tetracycline,has demonstrated good potential for eradicating Helicobacter pylori(***)infection,but the systematic evaluation of its role remains *** To explore the efficacy,safety,and compliance of minocycline in eradicating *** *** We comprehensively retrieved the electronic databases of PubMed,Embase,Web of Science,China National Knowledge Infrastructure,SinoMed,and Wanfang database as of October 30,2023,and finally included 22 research reports on *** eradication with minocycline-containing regimens as per the inclusion and exclusion *** eradication rates of *** were calculated using a fixed or a random effect model,and the heterogeneity and publication bias of the studies were *** The single-arm meta-analysis revealed that the minocycline-containing regimens achieved good overall *** eradication rates,reaching 82.3%[95%confidence interval(CI):79.7%-85.1%]in the intention-to-treat analysis and 90.0%(95%CI:87.7%-92.4%)in the per-protocol *** overall safety and compliance of the minocycline-containing regimens were good,demonstrating an overall incidence of adverse reactions of 36.5%(95%CI:31.5%-42.2%).Further by traditional meta-analysis,the results showed that the minocycline-containing regimens were not statistically different from other commonly used eradication regimens in eradication rate and incidence of adverse *** of the adverse reactions were mild to moderate and well-tolerated,and dizziness was relatively prominent in the minocycline-containing regimens(16%).CONCLUSION The minocycline-containing regimens demonstrated good efficacy,safety,and

关键词： Helicobacter pylori Minocycline Eradication Safety Resistance

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我国专升本招生政策图景、演进逻辑与发展路向——基于政策文本分析的视角

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中国职业技术教育 2024年第16期 26-36页

作者：马继征索丽珍厦门大学教育研究院成都锦城学院漳州城市职业学院

专升本教育作为我国高等教育体系纵向衔接与横向沟通的枢纽环节,是畅通人才成长通道的关键。2020年在国家战略布局与学生现实诉求共同推动下,专升本招生规模大幅增长引发学界关注。专升本招生政策在国家层面历经粗放发展到紧缩降温,有... 详细信息

专升本教育作为我国高等教育体系纵向衔接与横向沟通的枢纽环节,是畅通人才成长通道的关键。2020年在国家战略布局与学生现实诉求共同推动下,专升本招生规模大幅增长引发学界关注。专升本招生政策在国家层面历经粗放发展到紧缩降温,有序调整到再次扩招的演变;地方层面聚焦计划管理、报名、考试和录取制度,呈现动态性与多样态的区域差异。终身教育理念的坚守、职业教育发展的回应、教育公平观的多样选择和高考改革模式的沿袭共同作用,形成了纵横交错的政策图景。未来专升本招生政策在政策目标上将寻求社会需要与个体发展的协调,功能演进上从应试性走向教育性,选才方式上从路径依赖走向政策创新,最终实现从程序正义到实质正义的迈进。

关键词：专升本招生政策图景演进逻辑实质正义

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基于形式概念分析的优质教学模式挖掘

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华南师范大学学报（自然科学版） 2024年第3期56卷 106-117页

作者：郝飞锁婷马胜清李鹏陕西师范大学计算机科学学院西安710119 青海师范大学经济管理学院西宁810000

形式概念分析通过建立对象集与属性集间的二元关系来挖掘数据中隐含的概念,以及概念之间的层次关系,是一种分析数据和提取规则的有力工具。文章将其引入到学生和教师数据的分析中,通过创建学生和教师数据集的形式背景和概念格,详细分析... 详细信息

形式概念分析通过建立对象集与属性集间的二元关系来挖掘数据中隐含的概念,以及概念之间的层次关系,是一种分析数据和提取规则的有力工具。文章将其引入到学生和教师数据的分析中,通过创建学生和教师数据集的形式背景和概念格,详细分析学生答题情况和知识技能掌握情况,以及优秀教师教学行为与教学效果之间的关系,并结合建构主义理论、支架式教学理论、最近发展区理论挖掘优质教学模式。其次,应用统计方法分析了学生在测试中的答题分布情况和教师教学行为分布情况。最后,结合已有基准数据集开展了教学模式挖掘相关案例分析研究,其案例实施结果表明文章所提方法可以深层次有效地挖掘优质教学模式,可为进一步提升学生自主学习能力和改进教师教学行为提供参考。

关键词：自主学习能力数据挖掘形式概念分析支架式教学

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航改燃机多点喷射贫预混燃烧室燃料分级实验研究

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推进技术 2024年第3期45卷 184-193页

作者：孙付军潘江华郭璐华李洁马宏宇索建秦西北工业大学动力与能源学院陕西西安710072 中国航发湖南动力机械研究所湖南株洲412002 中国航发沈阳发动机研究所辽宁沈阳110015

为保证多点喷射贫预混燃烧室在50%~100%载荷工况范围的NO_(x)和CO排放量满足排放标准,本文实验研究了燃料分级数及不同工况、进口压力、进口温度下燃料分级比例对七喷嘴燃烧室NO_(x)和CO排放的影响规律。结果表明:主模燃料不分级方案,50... 详细信息

为保证多点喷射贫预混燃烧室在50%~100%载荷工况范围的NO_(x)和CO排放量满足排放标准,本文实验研究了燃料分级数及不同工况、进口压力、进口温度下燃料分级比例对七喷嘴燃烧室NO_(x)和CO排放的影响规律。结果表明:主模燃料不分级方案,50%~60%载荷工况CO排放量较高而不满足排放标准;主模燃料分两级方案,50%~100%载荷工况范围内NO_(x)和CO排放量均满足f_(NOx)≤25×10^(-6),fCO≤50×10^(-6)(@15%O_(2))的排放标准,且70%工况是打开主模第二级燃料的过渡工况点。另外随着进口压力和温度升高,能同时满足NO_(x)和CO排放标准的R_(pilot)(副模燃料质量流量与总燃料质量流量之比)范围逐渐缩小,且NO_(x)排放量与进口压力关系为F_(NOx)∝p30.44。因此采用主模燃料两级分级方案且适当调节R_(pilot),本文多点喷射贫预混燃烧室NO_(x)和CO能满足目前航改地面燃机燃烧室排放要求。

关键词：航改燃机多点喷射贫预混燃烧低污染燃料分级

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求解二维膜壳问题的虚拟元方法

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数学的实践与认识 2024年第4期54卷 235-243页

作者：马俊驰刘洋索宇洋辽宁师范大学数学学院辽宁大连116029

采用虚拟元方法求解二维膜壳问题.首先构造虚拟元空间,给出空间中函数自由度的计算方法.其次引入相应的投影算子,确定双线性形式的虚拟元离散格式,讨论解的存在唯一性.然后对离散形式进行误差估计.最后给出数值算例,给出不同网格剖分下... 详细信息

采用虚拟元方法求解二维膜壳问题.首先构造虚拟元空间,给出空间中函数自由度的计算方法.其次引入相应的投影算子,确定双线性形式的虚拟元离散格式,讨论解的存在唯一性.然后对离散形式进行误差估计.最后给出数值算例,给出不同网格剖分下的数值解,通过不同范数意义下的绝对误差,可以看出随着膜壳剖分的细化,误差逐渐变小,验证了理论分析的有效性.

关键词：膜壳问题虚拟元投影算子误差分析

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