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Challenges of lithium Metal Anode Enlightened from 2019 Nobel Prize in Chemistry

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Chinese Journal of Structural Chemistry 2019年第12期38卷 1999-2004页

作者： li xiang WEI Ying WU Jing-Yi yuan li-xia HUANG Yun-Hui School of Materials Science and Engineering Huazhong University of Science and Technology

The 2019 Nobel Prize in Chemistry was awarded to three scientists who have made great contributions in discovery of lithium-ion batteries(liBs). The liBs with graphite as anode have dominated the rechargeable battery markets of portable electronics and electric vehicles(EVs). For the next-generation batteries, high energy density is the important trend of development. Thus lithium metal is considered as the most promising anode owing to its highest theoretical capacity and the lowest electrochemical potential. However, the severe safety concerns hinder its practical application. The uncontrollable growth of lithium dendrites leads to capacity decay, low Coulombic efficiency, possible short circuit and thermal runaway. In this perspective, various methods to protect li metal anode have been analyzed. The development of solid-state electrolytes(SSEs) and the role of lithium anode in SSEs are discussed. Several new strategies for improving the safety of li metal based batteries are proposed to realize the real market-oriented security applications.

关键词： lithium anode safety issues lithium dendrite solid-state electrolytes

Theoretical and Experimental Studies on the Reaction Mechanism of Cl_2 + I_2 = 2ICl

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Chinese Journal of Structural Chemistry 2006年第8期25卷 985-991页

作者： YANG Guo-Ying yuan li-xia SUN De-Sheng WANG Zun-Yao JIANG Tao College of Biological and Chemical Engineering Jiaxing University Jiaxing Zhejiang 314001 China School of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing Jiangsu 210009 China

The gas phase reaction mechanism of Cl2 ＋ I2 = 2ICl has been theoretically investigated by DFF method at the B3LYP/3-21 G＊ level. Transition states of three reaction channels were consequently given. The results indicate that in the title reaction the least activation energy of bi-molecular reaction was smaller than the dissociation energies of I2 and Cl2, and thus the reaction mechanism was the course of molecule-molecule interaction at low reaction rate. If other factors such as illumination were taken into account, I2 could dissociate into I atoms and then react with Cl2, or Cl2 dissociates into CI atoms and reacts with I2. These were photochemical reactions with high reaction speed. The theoretical results were further validated with absorbance measurement at 516 nm.

关键词： chlorine iodine iodine chloride transition state,density functional theory spectrophotometry

Studies on the Reaction Mechanism of Br_2+I_2=2IBr

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Chinese Journal of Structural Chemistry 2006年第10期25卷 1280-1286页

作者： ZHAO Hui-Ming yuan li-xia YANG Guo-Ying SUN De-Sheng WANG Zun-Yao CHI Qing-Qing School of Biological and Chemical Engineering Jiaxing University Jiaxing Zhejiang 314001 China School of Science Nanjing University of Technology Jiangsu 210009 China

The reaction mechanism of Br2 ＋ I2 = 2IBr was investigated at the （U）MP2/3-21G^＊ level, and one four-centred transition state as well as two three-atom molecules （IBr2,I2Br） were thus obtained. The same result was achieved by comparing the activation energy of three reaction paths, i.e., the minimum activation energy of the bimolecular elementary reaction Br2 ＋ I2 = 2IBr is less than the dissociation energy of Br2 or I2. It is thus theoretically proved that the title reaction occurs more easily in the bimolecular form without light initiation. However, once the reaction system was initiated by light through the reaction path of Br atom reacting with I2 or I atom reacting with Br2, the title reaction was completed quickly, which was verified with absorbance measurement at 516 nm in the present study.

关键词： bromine iodine iodine bromide transition state reaction mechanism spectrophotometry

New Industrialization Path： The Strategic Choice of Chinese Iron and Steel Industry

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Chinese Business Review 2006年第4期5卷 34-41页

作者： yuanguan She li yuan xia Zhao University of Science and Technology Beijing

The fact-developing iron and steel industry provides the base for China economy to grow continually, stably and healthily for many years. This paper analyzes the situation and the disparity, which the iron and steel industry faces, and attests that the new industrialization path is the strategic choice for the Chinese iron and steel industry to develop continuously, and carries on the thorough discussion to the connotation of this choice.

关键词： iron and steel industry new industrialization transformation

DVD伺服控制芯片中内容加扰系统的硬件结构

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电子学报 2005年第2期33卷 214-217页

作者：夏军袁丽霞邹雪城华中科技大学电子科学与技术系湖北武汉430074

本文介绍了一种用于DVD ROM伺服控制芯片的内容干扰系统 (CSS)的硬件结构 .该系统通过在DVD驱动器和主机之间进行认证和对密钥进行加扰 ,可有效防止对DVD盘片的非法拷贝 .用VerilogHDL完成整个系统的设计 ,功能仿真结果表明 ,设计成功 ... 详细信息

本文介绍了一种用于DVD ROM伺服控制芯片的内容干扰系统 (CSS)的硬件结构 .该系统通过在DVD驱动器和主机之间进行认证和对密钥进行加扰 ,可有效防止对DVD盘片的非法拷贝 .用VerilogHDL完成整个系统的设计 ,功能仿真结果表明 ,设计成功 .采用CMOS标准单元库的综合结果为 :CSS的最大时钟频率为 10 0MHZ ,面积为1.6 9mm2 (0 .2 5 μm) ,当CSS的频率为 10 0MHZ时功耗为 37.38mW ,其性能足以满足DVD应用 .

关键词：内容加扰系统 DVD-ROM Verilog HDL 仿真综合

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng li Meifeng Cai Shengjun Miao yuan li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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角膜损伤修复与基质重塑的研究进展

中华实验眼科杂志 2018年第4期36卷 317-320页

作者：袁检宝李霞广西医科大学第一附属医院眼科南宁530021

角膜基质是角膜的主要组成部分。角膜基质透明性的维持包括角膜基质内胶原薄板的整齐排列及角膜基质细胞外基质（ECM）具有合适的蛋白聚糖。角膜发育中，神经嵴细胞和Keratoblasts分化成角膜基质细胞，合成高水平的胶原蛋白和蛋白聚糖... 详细信息

角膜基质是角膜的主要组成部分。角膜基质透明性的维持包括角膜基质内胶原薄板的整齐排列及角膜基质细胞外基质（ECM）具有合适的蛋白聚糖。角膜发育中，神经嵴细胞和Keratoblasts分化成角膜基质细胞，合成高水平的胶原蛋白和蛋白聚糖。角膜基质胶原纤维的产生与组装需要一系列细胞内外成分的参与。组装而成的胶原纤维沉积于ECM，合成小的纤维束，之后再形成特殊组织中更大的结构。角膜损伤修复过程是由多种细胞及细胞因子在时间、空间上高度协调而完成的，角膜基质细胞表型的改变和角膜基质ECM的重塑是该过程中两大重要步骤。目前，角膜屈光手术在世界范围内广泛开展，虽然大多数角膜屈光手术是顺利的，但角膜基质重塑过程中形成的基质混浊是屈光手术后视力损伤及视觉质量下降的主要原因。理解角膜损伤后基质重塑的过程，对探寻减少角膜混浊形成的方法具有重要意义。本文就角膜基质结构及其合成与组装、角膜损伤修复中基质重塑的病理生理过程以及角膜屈光手术后基质的重塑进行综述。

关键词：角膜基质角膜损伤修复基质重塑屈光手术

Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao li Zhao Yajun Zhang Zhe yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

当归拈痛汤及其拆方对类风湿性关节炎大鼠滑膜组织MMP-3调节作用的实验研究

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时珍国医国药 2013年第6期24卷 1313-1314页

作者：袁立霞南方医科大学中医药学院广东广州510515

目的以免疫组织化学法检测当归拈痛汤对佐剂性关节炎(adjuvantarthritis,AA)大鼠滑膜组织基质金属蛋白酶的影响,探讨当归拈痛汤部分作用机制。方法采用弗氏完全佐剂造成AA大鼠模型,观察各组大鼠关节滑膜组织中MMP-3的蛋白表达。结果当... 详细信息

目的以免疫组织化学法检测当归拈痛汤对佐剂性关节炎(adjuvantarthritis,AA)大鼠滑膜组织基质金属蛋白酶的影响,探讨当归拈痛汤部分作用机制。方法采用弗氏完全佐剂造成AA大鼠模型,观察各组大鼠关节滑膜组织中MMP-3的蛋白表达。结果当归拈痛汤各组均能降低AA大鼠滑膜组织中MMP-3的表达。结论当归拈痛汤可以抑制MMP-3表达。

关键词：类风湿性关节炎当归拈痛汤拆方 MMP-3 免疫组织化学