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Boosting reversible anionic redox reaction with Li/Cu dual honeycomb centers

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eScience 2023年第5期3卷 93-104页

作者： xiaohui rong Dongdong Xiao Qinghao Li Yaoshen Niu Feixiang Ding Xueyan Hou Qiyu Wang Juping Xu Chenglong Zhao Dong Zhou Ruijuan Xiao Xiqian Yu Wen Yin Lin Gu Hong Li Xuejie Huang Liquan Chen Yong-Sheng Hu Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesLaboratory for Advanced Materials&Electron MicroscopyBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100190China Yangtze River Delta Physics Research Center Co.Ltd Liyang 213300China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Spallation Neutron Source Science Center Dongguan 523803China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Advanced Science Facilities ShenzhenGuangdong 518107PR China

The anionic redox reaction(ARR)is a promising charge contributor to improve the reversible capacity of layeredoxide cathodes for Na-ion batteries;however,some practical bottlenecks still need to be eliminated,including a low capacity retention,large voltage hysteresis,and low rate ***,we proposed a high-Na content honeycomb-ordered cathode,P2–Na_(5/6)[Li_(1/6)Cu_(1/6)Mn_(2/3)]O_(2)(P2-NLCMO),with combined cationic/anionic *** powder diffraction and X-ray diffraction of P2-NLCMO suggested P2-type stacking with rarely found P6322 *** addition,advanced spectroscopy techniques and density functional theory calculations confirmed the synergistic stabilizing relationship between the Li/Cu dual honeycomb centers,achieving fully active Cu^(3+)/Cu^(2+) redox and stabilized ARR with interactively suppressed local *** a meticulously regulated charge/discharge protocol,both the cycling and rate capability of P2-NLCMO were significantly.

关键词： Anionic redox reaction Layered-oxide cathode Honeycomb Na-ion batteries

A new Tin-based O3-Na_(0.9)[Ni_(0.45-x/2)Mn_xSn_(0.55-x/2)]O_2 as sodium-ion battery cathode

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Journal of Energy Chemistry 2019年第4期28卷 132-137页

作者： xiaohui rong Xingguo Qi Yaxiang Lu Yuesheng Wang Yunming Li Liwei Jiang Kai Yang Fei Gao Xuejie Huang Liquan Chen Yong-Sheng Hu State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences

Recently,sodium-ion batteries(SIBs),regarded as promising supplements for lithium-ion batteries(LIBs),especially in the large-scale energy storage field,are attracting more and more ***,the limited suitable cathode materials hinder the wide commercialization of *** this aspect,in this work,a new layered oxide with 4d metal Tin was synthesized and investigated as cathode material for *** optimized sodium-deficient O3-Na_(0.9)Ni_(0.45)Sn_(0.55)O_2and O3-Na_(0.9)Ni_(0.4)Mn_(0.1)Sn_(0.5)O_2were selected for comprehensive investigation,both of which exhibited high operating voltage of around 3.45 V with smooth charge/discharge *** comparison,O3-Na_(0.9)Ni_(0.4)Mn_(0.1)Sn_(0.5)O_2shows a higher reversible capacity(65 m A h/g,0.1 C),better rate capability and cycling stability than that of O3-Na_(0.9)Ni_(0.45)Sn_(0.55)O_2(50 mA h/g,0.1 C),indicating that a small amount of Mn-substitution can improve the electrochemical *** work presents a new possibility of discovering potential cathode candidates by exploring the Tin-based layered oxides.

关键词： Sodium-ion batteries Layered oxide cathode Tin-based cathode

Hunting Sodium Dendrites in NASICON-BasedSolid-State Electrolytes

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Energy Material Advances 2021年第1期2021卷 155-164页

作者： Qiangqiang Zhang Yaxiang Lu Weichang Guo Yuanjun Shao Lilu Liu Jiaze Lu xiaohui rong Xiaogang Han Hong Li Liquan Chen Yong-Sheng Hu Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Yangtze River Delta Physics Research Center Co.Ltd. Liyang 213300China State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi’an Jiaotong UniversityXi’anShaanxi 710049China

NASICON-(Na superionic conductor-)based solid-state electrolytes(SSEs)are believed to be attracting candidates for solid-state sodium batteries due to their high ionic conductivity and prospectively reliable ***,the poor interface compatibility and the formation of Na dendrites inhibit their practical ***,we directly observed the propagation of Na dendrites through NASICON-based Na3.1Zr2Si2.1P0.9O12 SSE for the first ***,a fluorinated amorphous carbon(FAC)interfacial layer on the ceramic surface was simply developed by in situ carbonization of PVDF to improve the compatibility between Na metal and ***,Na dendrites were effectively suppressed due to the formation of NaF in the interface when molten Na metal contacts with the FAC *** from the optimized interface,both the Na||Na symmetric cells and Na3V2(PO4)3||Na solidstate sodium batteries deliver remarkably electrochemical *** results offer benign reference to the maturation of NASICON-based solid-state sodium batteries.

关键词： stability interface compatibility

Anionic redox reaction mechanism in Na-ion batteries

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Chinese Physics B 2022年第9期31卷 95-102页

作者：侯雪妍容晓晖陆雅翔胡勇胜 Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100190China

Na-ion batteries(NIBs),as one of the next-generation rechargeable battery systems,hold great potential in large-scale energy storage applications owing to the abundance and costeffectiveness of sodium *** the extensive exploration of electrode materials,the relatively low attainable capacity of NIBs hinders their practical *** recent years,the anionic redox reaction(ARR)in NIBs has been emerging as a new paradigm to deliver extra capacity and thus offers an opportunity to break through the intrinsic energy density *** this review,the fundamental investigation of the ARR mechanism and the latest exploration of cathode materials are summarized,in order to highlight the significance of reversible anionic redox and suggest prospective developing directions.

关键词： energy storage Na-ion battery anionic redox reaction

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大规模设备协同机制研究

计算机研究与发展 2011年第9期48卷 1589-1596页

作者：荣晓慧陈峰邓攀马世龙软件开发环境国家重点实验室(北京航空航天大学) 北京100191

在物联网、区域管理和应急救援等领域,对大规模设备协同的需求越来越高.针对大规模设备协同中协同规模大和时序约束严格这两个特点,定义了包含协同任务和协同子任务的大规模设备协同两级任务模型,在此模型基础上利用Pi-演算给出了大规... 详细信息

在物联网、区域管理和应急救援等领域,对大规模设备协同的需求越来越高.针对大规模设备协同中协同规模大和时序约束严格这两个特点,定义了包含协同任务和协同子任务的大规模设备协同两级任务模型,在此模型基础上利用Pi-演算给出了大规模设备协同中两级任务协同机制的描述,并从理论上证明了该机制的正确性.并实现了大规模设备协同原型系统,通过在原型系统上进行模拟实验,验证了该协同机制能够满足设备协同中的大规模性和严格的时序约束.

关键词：大规模设备协同协同任务模型协同机制时序约束 Pi-演算

八十年代家居装饰设计与民众生活方式变迁--以《家具与生活》杂志为对象的考察

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家具与室内装饰 2024年第1期31卷 23-27页

作者：关晓辉容泳珊宋逸菲华南农业大学艺术学院广东广州510642

通过考察八十年代《家具与生活》杂志,可发现在民众生活方式变迁下家居装饰设计呈现几点时代特征:首先,板式组合家具成为实用、经济的理想产品;其次,小面积居室促成空间优化设计的趋向;再次,“自己设计”和“自己做”投射出个性化的生... 详细信息

通过考察八十年代《家具与生活》杂志,可发现在民众生活方式变迁下家居装饰设计呈现几点时代特征:首先,板式组合家具成为实用、经济的理想产品;其次,小面积居室促成空间优化设计的趋向;再次,“自己设计”和“自己做”投射出个性化的生活态度。更重要的是,家居装饰设计被赋予前所未有的精神价值,成为精神文明建设的重要途径之一,引导人们实践朴素、务实、积极、健康的生活方式。八十年代家居装饰设计与民众生活方式变迁联系紧密,透过这些联系审视设计行为的社会属性,将更深刻地理解“设计作为文化现象”的研究意义。

关键词：八十年代家居装饰设计《家具与生活》杂志生活方式变迁

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钠离子电池关键材料研究及工程化探索进展

科学通报 2022年第30期67卷 3546-3564页

作者：党荣彬陆雅翔容晓晖丁飞翔郭秋卜许伟良陈立泉胡勇胜中国科学院物理研究所北京100190

“双碳”背景下,钠离子电池因成本低廉、安全环保和性能优异等优点受到社会各界的重点关注.低成本的钠离子电池是锂离子电池的有益补充,并将在储能领域展现自己的独特优势,现阶段钠离子电池正处于由实验室探索到产业化推进的关键节点.... 详细信息

“双碳”背景下,钠离子电池因成本低廉、安全环保和性能优异等优点受到社会各界的重点关注.低成本的钠离子电池是锂离子电池的有益补充,并将在储能领域展现自己的独特优势,现阶段钠离子电池正处于由实验室探索到产业化推进的关键节点.本文简要介绍了钠离子电池的研究背景,重点介绍了中国科学院物理研究所在钠离子电池关键材料(正极、负极和电解质)、基础理论和工程化探索方面取得的重要进展,对钠离子电池的未来发展方向进行了展望,以期推动钠离子电池的持续发展,加速钠离子电池的商业化应用.

关键词：钠离子电池正极负极电解质机理研究工程化

反应氧族促进神经保护的量效关系及其机制研究

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Journal of Chinese Pharmaceutical Sciences 2024年第1期33卷 46-56页

作者：黄荣胡小娇张润芳李晓晖岑娟河南大学第一附属医院神经内科河南开封475000 河南大学药学院天然药物与免疫工程重点实验室河南开封475004

反应氧族(ROS)的大量产生是缺血性中风损伤的关键因素。尽管大量研究表明抗氧化剂具有神经保护作用,然而其长期临床疗效始终差强人意。事实上,ROS在特定浓度下具有促进细胞增殖、促进保护性自噬、激活自身抗氧化能力等积极的生理作用,... 详细信息

反应氧族(ROS)的大量产生是缺血性中风损伤的关键因素。尽管大量研究表明抗氧化剂具有神经保护作用,然而其长期临床疗效始终差强人意。事实上,ROS在特定浓度下具有促进细胞增殖、促进保护性自噬、激活自身抗氧化能力等积极的生理作用,在抗氧化干预时尽量保留ROS的优势作用或是解决问题的关键。本研究探索了不同剂量下H2O2对PC12和SH-SY5Y神经细胞增殖、自噬、凋亡等生理病理功能的影响,检测了相应细胞内及线粒体内ROS的变化规律,绘制了ROS发挥优势活性的剂量区间。进一步使用自噬抑制剂及信号通路抑制剂等进行研究,结果表明100μM的H2O2可通过AKT/m-TOR介导的HIF-1α和TFEB信号激活保护性自噬,从而实现神经细胞的保护作用。本研究揭示了ROS发挥优势作用的浓度范围,并阐明了其神经保护机制,为全面优化脑缺血后抗氧化剂的使用提供了重要参考。

关键词：反应氧族脑缺血保护性自噬 HIF-1α TFEB

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沥青质颗粒在垂直井筒中的运移特征流速

中国石油大学学报（自然科学版） 2024年第3期48卷 127-133页

作者：罗荣乔星亚杨小辉熊瑞颖李宁博郭继香中国石化西北油田分公司新疆乌鲁木齐830011 中国石油大学(北京)非常规油气科学技术研究院北京102249

为防止沥青质沉积堵塞油井,需明确垂直井筒内流体携沥青质颗粒运移特性。通过静态沉降试验探究不规则形状沥青质颗粒沉降末速规律,采用垂直井筒液携固流动试验装置研究不同因素对沥青质运移临界流速的影响程度,建立沥青质颗粒沉降末速... 详细信息

为防止沥青质沉积堵塞油井,需明确垂直井筒内流体携沥青质颗粒运移特性。通过静态沉降试验探究不规则形状沥青质颗粒沉降末速规律,采用垂直井筒液携固流动试验装置研究不同因素对沥青质运移临界流速的影响程度,建立沥青质颗粒沉降末速和运移临界流速计算公式。结果表明:沥青质表面不均匀性增大了沉降阻力,使沉降等效直径小于颗粒实测粒径;运移临界流速与颗粒粒径成正比、与液相黏度成反比,颗粒体积分数对运移临界流速影响较小;相同条件下流体携沥青质运移临界流速为沉降末速的1.182倍。

关键词：垂直井筒沉降等效直径沉降末速临界流速沥青质颗粒

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