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Boosting cationic and anionic redox activity of Li-rich layered oxide cathodes via Li/Ni disordered regulation

Journal of Energy Chemistry 2025年第1期100卷 533-543页

作者： Zewen Liu Zhen Wu Hao Wang Xudong zhang Yuanzhen Chen Yongning Liu Shengwu guo Shenghua Chen Yanli Nan Yan Liu State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University School of Materials Science and Engineering Xi'an University of Architecture and Technology Hefei Advanced Computing Center Operation Management Corp Ltd Network Information Center Xi'an Jiaotong University

Lithium-rich layered oxides （LLOs） are increasingly recognized as promising cathode materials for nextgeneration high-energy-density lithium-ion batteries （LIBs）.However,they suffer from voltage decay and low initial Coulombic efficiency （ICE） due to severe structural degradation caused by irreversible O ***,we introduce a three-in-one strategy of increasing Ni and Mn content,along with Li/Ni disordering and TM–O covalency regulation to boost cationic and anionic redox activity simultaneously and thus enhance the electrochemical activity of *** target material,Li1.2Ni0.168Mn0.558Co0.074O2（L1）,exhibits an improved ICE of 87.2%and specific capacity of 293.2 mA h g-1and minimal voltage decay of less than 0.53 m V cycle-1over 300 cycles at 1C,compared to Li1.2Ni0.13Mn0.54Co0.13O2（Ls）(274.4 mA h g-1for initial capacity,73.8%for ICE and voltage decay of 0.84 mV/cycle over 300 cycles at 1C).Theoretical calculations reveal that the density of states （DOS） area near the Fermi energy level for L1 is larger than that of Ls,indicating higher anionic and cationic redox reactivity than ***,L1 exhibits increased O-vacancy formation energy due to higher Li/Ni disordering of 4.76%（quantified by X-ray diffraction Rietveld refinement） and enhanced TM–O covalency,making lattice O release more difficult and thus improving electrochemical *** increased Li/Ni disordering also leads to more Ni2+presence in the Li layer,which acts as a pillar during Li+de-embedding,improving structural *** research not only presents a viable approach to designing low-Co LLOs with enhanced capacity and ICE but also contributes significantly to the fundamental understanding of structural regulation in high-performance LIB cathodes.

关键词： Ice

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Recovery of titanium from undissolved residue(tionite) in titanium oxide industry via NaOH hydrothermal conversion and H_2SO_4 leaching

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Transactions of Nonferrous Metals Society of China 2016年第6期26卷 1696-1705页

作者：孟凡成薛天艳刘亚辉张国之齐涛中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室北京100190 中国科学院过程工程研究所绿色过程与工程院重点实验室北京100190 中国科学院大学北京100049

To recover titanium from tionite, a new process consisting of NaOH hydrothermal conversion, water washing, and H2SO4 leaching for TiO2 preparation was developed. The experimental results show that under the optimum hydrothermal conversion conditions, i.e., 50% NaOH （mass fraction） solution, NaOH/tionite mass ratio of 4：1, reaction temperature of 240 ℃reaction time of 1 h and oxygen partial pressure of 0.25 MPa, the titanium was mainly converted into Na2TiO3, and the conversion was 97.2%. The unwanted product Na2TiSiO5 remained stable in water washing, and its formation was prevented by improving NaOH concentration. In water washing process, about 97.6% of Na＋ could be recycled by washing the hydrothermal product. The NaOH solutions could be reused after concentration. 96.7% of titanium in the washed product was easily leached in H2SO4 solution at low temperatures, forming titanyl sulfate solution to further prepare TiO2.

关键词： tionite titanium recovery NaOH hydrothermal conversion water washing H2SO4 leaching

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Reduced mesencephalic astrocyte-derived neurotrophic factor expression by mutant androgen receptor contributes to neurodegeneration in a model of spinal and bulbar muscular atrophy pathology

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Neural Regeneration Research 2025年第9期20卷 2655-2666页

作者： Yiyang Qin Wenzhen Zhu Tingting guo Yiran zhang Tingting Xing Peng Yin Shihua Li Xiao-Jiang Li Su Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)Guangdong–HongKong–Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina

Spinal and bulbar muscular atrophy is a neurodegenerative disease caused by extended CAG trinucleotide repeats in the androgen receptor gene,which encodes a ligand-dependent transcription facto *** mutant androgen receptor protein,characterized by polyglutamine expansion,is prone to misfolding and forms aggregates in both the nucleus and cytoplasm in the brain in spinal and bulbar muscular atrophy *** aggregates alter protein-protein interactions and compromise transcriptional *** this study,we reported that in both cultured N2a cells and mouse brain,mutant androgen receptor with polyglutamine expansion causes reduced expression of mesencephalic astrocyte-de rived neurotrophic *** n of mesencephalic astrocyte-derived neurotrophic factor amelio rated the neurotoxicity of mutant androgen receptor through the inhibition of mutant androgen receptor *** down endogenous mesencephalic astrocyte-derived neurotrophic factor in the mouse brain exacerbated neuronal damage and mutant androgen receptor *** findings suggest that inhibition of mesencephalic astrocyte-derived neurotrophic factor expression by mutant androgen receptor is a potential mechanism underlying neurodegeneration in spinal and bulbar muscular atrophy.

关键词： androgen receptor mesencephalic astrocyte-derived neurotrophic factor mouse model neurodegeneration neuronal loss neurotrophic factor polyglutamine disease protein misfolding spinal and bulbar muscular atrophy transcription factor

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MoS2 synaptic transistor with one-step manufacture

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Science China(Information Sciences) 2025年第1期68卷 357-365页

作者： Yihao guo Yang WANG Wenjie DENG Yi WU Jingtao LI Kexin LI Yuehui ZHAO Songlin YU Xiaoting WANG Yongzhe zhang Hui YAN Key Laboratory of Optoelectronics Technology of Education Ministry of China Faculty of Information TechnologyBeijing University of Technology Key Laboratory of Advanced Functional Materials Ministry of Education Faculty of Materials and ManufacturingBeijing University of Technology The 11th Research Institute of Electronics Technology Group Corporation

The synaptic transistor,which is a neuromorphic device with brain-like functions,has garnered significant attention due to characteristics such as low energy consumption,high integration,multiple functions,and high computational ***,the current synaptic transistor possesses a complicated structure and involves complex manufacturing steps,which is not conducive to low-cost,large-scale bionic ***,we introduce a simple MoS2synaptic transistor exhibiting robust synaptic *** transistor utilizes magnetron sputtering manufacture to combine the process of device metal electrode deposition and the introduction of defect states,which helps streamline the manufacturing process into a single *** long-term potentiation and long-term depression in photoelectric coordination are initially ***,biological functions,such as double pulse facilitation and the transformation behavior of short-term memory to long-term memory,are thoroughly evaluated,along with learning-forgetting-relearning ***,the device exhibits robust synaptic plasticity until incident light angles down to 30° to imitate the multi-to-one axon-cellular ***,a classical simulation of Pavlov's dog conditioned reflex is demonstrated along with the multiview extraction *** experimental results demonstrate a promising synaptic transistor with a simple structure,manufacturing technique,and excellent *** further indicates the potential for large-scale integration of bionic neuromorphic systems.

关键词： process optimization artificial synaptic device one-stepmanufacture synaptic plasticity bionic simulation

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基于应变片压阻效应的柔性传感器阵列的设计

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仪表技术与传感器 2017年第7期 4-6,19页

作者：肖立志郭兰申张磊河北工业大学机械工程学院天津300130

为了使应用于机器人"皮肤"的传感器满足柔性、可阵列化和灵敏度高的需求,在传统应变式压力传感器的基础上,提出了基于应变片的压阻式柔性压力传感器的设计方案。在实验室条件下,应用三元乙丙橡胶作为弹性元件,制作柔性压力传感器,根据... 详细信息

为了使应用于机器人"皮肤"的传感器满足柔性、可阵列化和灵敏度高的需求,在传统应变式压力传感器的基础上,提出了基于应变片的压阻式柔性压力传感器的设计方案。在实验室条件下,应用三元乙丙橡胶作为弹性元件,制作柔性压力传感器,根据应变片的压阻效应可知,在弹性元件表面的压力值与电阻的变化存在对应关系。为了能够快速识别每个传感器单元的受力信息,采用行扫描法对传感器阵列逐行扫描。为了能够大面积覆盖,采用FPC连接器对柔性传感器阵列块与块之间进行连接,以及进行传感器阵列与控制板之间信号的传递。

关键词：机器人柔性压力传感器压阻效应弹性元件行扫描法

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基于多尺度量纲统一原则的油藏孔隙分形输运特性研究

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工程热物理学报 2017年第10期38卷 2235-2241页

作者：王志国张聪慧贾永英尹柴玲刘晓燕东北石油大学土木建筑工程学院大庆163318 东北石油大学黑龙江省防灾减灾及防护工程重点实验室大庆163318

油藏孔隙分布具有分形特征,如何将分形描述方法应用到油藏多孔介质内流体的输运特性研究过程中,目前的研究方法存在一定局限,主要是没有考虑量纲统一原则和尺度效应等。本文基于量纲统一原则,利用分形描述方法,对油藏多孔介质内输运过... 详细信息

油藏孔隙分布具有分形特征,如何将分形描述方法应用到油藏多孔介质内流体的输运特性研究过程中,目前的研究方法存在一定局限,主要是没有考虑量纲统一原则和尺度效应等。本文基于量纲统一原则,利用分形描述方法,对油藏多孔介质内输运过程渗透率和渗流流量进行了推导,得到了输运特性参数的单位尺度转换系数,据此可以实现基于微观分形特征描述来分析宏观输运过程。本文建立的分形输运描述方程能够实现不同尺度层级间的转换,得到的宏观特性参数结果更接近实测值。基于本文所建模型,利用某油藏数据进行了分析验证,得到了输运流量及渗透率变化规律与实际油藏的分布规律吻合。

关键词：输运特性分形量纲统一尺度转换油藏孔隙

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Enhancing anion conductivity in a highly alkali-stable eta topologic Cu(Ⅰ) framework via strong electrostatic repulsion

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Science China Chemistry 2025年

作者： Xiaolu Wang Shaohui guo Chao Suo Fuqiang zhang Junhao Wang Wenjing Wang Daqiang Yuan Linfeng Liang Xianming zhang College of Chemistry Taiyuan University of Technology Institute of Crystalline Materials Shanxi University School of Chemistry and Materials Science Shanxi Normal University State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Metal-organic frameworks （MOFs） based on anion exchange membranes （AEMs） have garnered considerable interest,particularly for their potential to enhance ion conductivity by pre-introducing anions into *** approach is recognized as straightforward and effective for improving ion ***,developing high-performance AEMs is limited by the inherent instability and low resistance of *** study presents a novel 1,3,5-triazineμ3-bridged neutral Cu（I） framework,designated SXU-120 （where SXU represents Shanxi University）.This framework is synthesized using melamine,a widely available industrial product,as the starting material,achieving a high space-time yield exceeding 1.1 kg *** organic ligands and metal ions in SXU-120 are 3-connected,forming a rare eta topology with the point symbol 8～***-120 exhibits exceptional stability,even in a 10 M KOH solution,due to its high density of uncoordinated–NH2and carbonyl ***,the framework’s unique one-dimensional channels,characterized by their electronegativity,interact electrostatically with OH-ions,thereby accelerating OH-ion transfer along these ***,the OH-conductivity of this material reaches an impressive 0.49 S cm-1at 90°C under full humidity for 100 h,representing the highest OH-conductivity reported for MOF-based conductors to *** properties make SXU-120 a promising candidate for efficient AEM materials in next-generation industrial applications.

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采用精道镜技术治疗射精管梗阻性无精子症和重症少精症

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中国内镜杂志 2016年第1期22卷 42-44页

作者：张治国郝林臧光辉韩从辉东南大学附属徐州中心医院泌尿外科江苏徐州221009

目的探讨精道镜技术在治疗梗阻性无精子症和重症少精症中的价值。方法选取25例射精管梗阻患者（无精子症17例,重症少精子症8例）,采用精囊镜技术治疗,术后对精液质量及受孕率进行随访。结果78.6%（11/14例）的无精子症患者3个月检查时... 详细信息

目的探讨精道镜技术在治疗梗阻性无精子症和重症少精症中的价值。方法选取25例射精管梗阻患者（无精子症17例,重症少精子症8例）,采用精囊镜技术治疗,术后对精液质量及受孕率进行随访。结果78.6%（11/14例）的无精子症患者3个月检查时即有精子,精液量由手术前0.3~1.2 ml[平均（0.89±0.14）ml]增加到手术后1.9~4.5 ml[平均（2.80±0.75）ml],差异有统计学意义（P〈0.01）;8例重症少精症患者3个月检查时精液量增加明显（P〈0.01）,总精子数增加（P〈0.01）;术后9个月内总妊娠率达到27.3%（6/22）。所有病例术后均未见逆行射精、尿失禁或直肠损伤等并发症。结论经尿道精囊镜技术治疗射精管梗阻性无精症及重症少精症是安全有效的。

关键词：精道镜无精子症少精症治疗射精管

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Formation and evolution of supercritical geofluid

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Science China Earth Sciences 2025年第1期68卷 39-51页

作者： Huaiwei NI Yilin XIAO Xiaolin XIONG Xiandong LIU Chunxiao GAO Yi-Xiang CHEN Yunguo LI Wan-Cai LI Xuan guo Yang-Yang WANG Dong-Bo TAN Li zhang State Key Laboratory of Lithospheric and Environmental Coevolution University of Science and Technology of China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Sciences and Engineering Nanjing University State Key Lab of Superhard Materials Jilin University

In this work, we provide a comprehensive review on the formation, evolution, properties, and effects of supercritical geofluid. In Earth's interior, enhanced miscibility between H2O and silicate by the addition of special components or by the increase of pressure and temperature gives rise to supercritical geofluid with a significant amount of both H2O and silicate *** formation of supercritical geofluid in magmatic-hydrothermal systems, typified by pegmatite system, is governed by meltfluid critical curve. The formation of supercritical geofluid in metamorphic systems, typified by subducted slab, is governed by the second critical end point. Experimental results suggest that the presence of boron and fluorine in pegmatite system makes it possible to form supercritical geofluid at crustal depths, but the release of supercritical geofluid from subducted slab is withheld until almost 100 km depth. A major presence of both H2O and depolymerized structural units（monomers, dimers, etc.） endows supercritical geofluid with unique physical properties including low density, low elastic moduli, low viscosity, high diffusivity,and high electrical conductivity. Supercritical geofluid can effectively mobilize a variety of elements even including high field strength elements and heavy rare earth elements. The chemical signatures of supercritical geofluid can be inherited by metasomatized mantle and mantle-derived melts, and this could give an explanation of the oxidation of arc magmas. Phase separation of supercritical geofluid through the mechanism of spinodal decomposition leads to formation of a melt network. Multiphase fluid inclusions recovered from subduction zone rocks and pegmatites are possible relics of supercritical geofluid. Supercritical geofluid can cause electrical anomaly and low seismic velocity near the top of subducted slab, and can be linked with intermediate-focus earthquakes. Supercritical geofluid may have played a crucial role in the formation of pe

关键词： Supercritical geofluid Miscibility Subduction zone Pegmatite

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基于分类服务的下一代互联网体系结构的实现

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计算机工程与应用 2001年第16期37卷 91-93页

作者：韦智郭学理张凌海武汉大学软件工程国家重点实验室计算机科学与技术系武汉430072

随着互联网应用的增长，目前提供尽力服务的互联网体系结构越来越不能满足这些新的服务要求。通过设计出一种新的路由器缓冲区管理策略，探讨一种基于分类服务的新一代互联网体系结构的实现方式。

关键词：分类服务 IP路由器缓冲区管理互联网体系结构计算机网络

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