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In situ characterizations of advanced electrode materials for sodium-ion batteries toward high electrochemical performances

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Journal of Energy Chemistry 2023年第1期76卷 146-164,I0004页

作者： Xiu-Mei Lin Xin-Tao Yang Hao-Ning Chen Yong-Liang Deng Wen-Han Chen jin-Chao dong Yi-Min Wei Jian-Feng Li Department of Chemistry and Environment Science Fujian Province University Key Laboratory of Analytical ScienceMinnan Normal UniversityZhangzhou 363000FujianChina State Key Laboratory of Physical Chemistry of Solid Surfaces iChEMCollege of Chemistry and Chemical EngineeringCollege of EnergyCollege of MaterialsXiamen University Xiamen 361005FujianChina Contemporary Amperex Technology Co. Ningde 35210oFujianChina College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018ZhejiangChina Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005FujianChina

Energy storage is an ever-growing global concern due to increased energy needs and resource ***-ion batteries(SIBs)have called increasing attention and achieved substantial progress in recent years owing to the abundance and even distribution of Na resources in the crust,and the predicted low cost of the ***,SIBs still face challenges like lower energy density and inferior cycling stability compared to mature lithium-ion batteries(LIBs).Enhancing the electrochemical performance of SIBs requires an in-deep and comprehensive understanding of the improvement strategies and the underlying reaction mechanism elucidated by in situ *** this review,commonly applied in situ techniques,for instance,transmission electron microscopy(TEM),Raman spectroscopy,X-ray diffraction(XRD),and X-ray absorption near-edge structure(XANES),and their applications on the representative cathode and anode materials with selected samples are *** discuss the merits and demerits of each type of material,strategies to enhance their electrochemical performance,and the applications of in situ characterizations of them during the de/sodiation process to reveal the underlying reaction mechanism for performance *** aim to elucidate the composition/structure-per formance relationship to provide guidelines for rational design and preparation of electrode materials toward high electrochemical performance.

关键词： Sodium-ion batteries(SIBs) In situ characterizations Electrode materials Composition/structure-performance

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An epidermal electrode based triboelectric walking energy harvester for wearable wireless sensing applications

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Science China(Technological Sciences) 2024年第3期67卷 949-957页

作者： CHANG ShiYuan LIU FuHai CHEN jinKai XIA LianBin ZHOU Hao JIANG jingYang dong Kang ZHANG ChenHao WU Yun CHEN jin XUAN Weipeng SUN LingLing jin Hao dong ShuRong LUO JiKui Ministry of Education Key Laboratory of RF Circuits and Systems Hangzhou Dianzi UniversityHangzhou 310018China Special Equipment College Hangzhou Vocational&Technical CollegeHangzhou 310018China College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 330027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311200China

Harvesting bio-kinetic energy using a triboelectric nanogenerator(TENG) is one of the promising routes to solve the sustainable energy supply problem for wearable electronics. However, additional materials, complex fabricating processes or specific mechanical structures are needed for existing TENGs to harvest bio-kinetic energy. Besides, they need to be tightly attached to the human body, which may result in detachment and malfunction under tense human motion. Herein, an intrinsic epidermal electrode-based TENG(E-TENG) is proposed to harvest human walking energy. The wearing shoes and ground are used as tribo-materials, and the human epidermis is used as the back electrode of the E-TENG. Compared with the traditional TENGs,the E-TENG does not need any additional tribo-materials and complex mechanical structures. Under optimal conditions, the voltage output of E-TENG can reach 914 V. E-TENG has been used as a self-powered warning sensor and pedometer sensor for demonstration. Furthermore, E-TENG based self-powered wireless sensor system has been developed using a newly designed micro energy electronic switch(MEES). Ambient ultraviolet intensity, temperature and humidity information can be monitored and then transmitted to mobile phone every 3.5 min, demonstrating great potential for widespread wearable applications.

关键词： triboelectric nanogenerator wearable wireless sensing self-powered

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Effect of multiple coulomb scattering on the beam tests of silicon pixel detectors

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Nuclear Science and Techniques 2024年第4期35卷 200-207页

作者： Lan-Kun Li Ming-Yi dong Ze Gao Liang-Cheng-Long jin Shu-Jun Zhao School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Particle Detection and Electronics(Institute of High Energy Physics CAS)Beijing 100049China University of Chinese Academy of Science Beijing 100049China University of South China Hengyang 421001China

In the research and development of new silicon pixel detectors,a collimated monoenergetic charged-particle test beam equipped with a high-resolution pixel-beam telescope is crucial for prototype verification and performance *** the beam energy is low,the effect of multiple Coulomb scattering on the measured resolution of the Device Under Test(DUT)must be considered to accurately evaluate the performance of the pixel chips and *** study aimed to investigate the effect of multiple Coulomb scattering on the measured resolution,particularly at low beam *** were conducted using Allpix^(2) to study the effects of multiple Coulomb scattering under different beam energies,material budgets,and telescope *** simulations also provided the minimum energy at which the effect of multiple Coulomb scattering could be *** with the results of a five-layer detector system tested with an electron beam at DESY,the simulation results were consistent with the beam test results,confirming the reliability of the simulations.

关键词： Silicon Pixel Detectors Beam Telescope Multiple Coulomb Scattering Spatial Resolution

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C_(Ar)-Br bond cleavage via cooperative EnT/NHC catalysis: mild access to indolines

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Science China Chemistry 2024年第3期67卷 922-927页

作者： Yi-Xiong dong Cao-Bo Li Ming-Lei jin Zhong-Hua Gao Song Ye Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The cooperative visible-light mediated and NHC-catalyzed dearomative arylation-acylation of N-(2-bromobenzoyl)indoles with aldehydes was developed, affording the corresponding highly functionalized polycyclic indolines in moderate to good yields with exclusive diastereoselectivities. Mechanism investigations support the activation of CAr-Br bond via visible-light mediated energy transfer(EnT) and the following single-electron-transfer(SET) with Breslow intermediate under NHC catalysis to give key aryl radical and ketyl radical. This protocol demonstrates the cleavage of CAr-Br bond under mild cooperative EnT/NHC catalysis.

关键词： energy transfer N-heterocyclic carbenes photocatalysis aryl radicals indolines

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Programmable repulsive potential for tight-binding from Chen-Möbius inversion theorem

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 71-83页

作者： Jian-Gao Li jin-Kun Tang Hong-Quan Song Gotthard Seifert dong-Bo Zhang College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China Department of Physics Beijing Normal UniversityBeijing 100875China College of Physics and Telecommunication Engineering Zhoukou Normal UniversityZhoukou 466001China Theoretische Chemie Technische Universität DresdenDresden D-01062Germany

An accurate total energy calculation is essential in materials *** date,many tight-binding(TB)approaches based on parameterized hopping can produce electronic structures comparable to those obtained using first-principles ***,TB approaches still have limited applicability for determining material properties derived from the total *** is,the predictive power of the TB total energy is impaired by an inaccurate evaluation of the repulsive *** complexity associated with the parametrization of TB repulsive potentials is the weak link in this *** this study,we propose a new method for obtaining the pairwise TB repulsive potential for crystalline materials by employing the Chen-Möbius inversion *** show that the TB-based phonon dispersions,calculated using the resulting repulsive potential,compare well with those obtained by first-principles calculations for various systems,including covalent and ionic bulk materials and twodimensional *** present approach only requires the first-principles total energy and TB electronic band energy as input and does not involve any *** striking feature enables us to generate repulsive potentials programmatically.

关键词： tight binding first-principles calculation total energy repulsive potential phonon dispersion

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Analysis of lymph node metastasis and survival prognosis in early gastric cancer patients: A retrospective study

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1637-1646页

作者： dong-Yuan Liu jin-jin Hu Yong-Quan Zhou Ai-Rong Tan Department of General Surgery The 971st Hospital of Chinese People's Liberation ArmyQingdao 266071Shandong ProvinceChina Department of Chest Surgery Feicheng People's HospitalFeicheng 271600Shandong ProvinceChina Department of Gastrointestinal Surgery Zhongshan Hospital of Fudan UniversityShanghai 200032China Department of Oncology Qingdao Municipal HospitalQingdao 266000Shandong ProvinceChina

BACKGROUND Early gastric cancer(EGC)is a common malignant tumor of the digestive system,and its lymph node metastasis and survival prognosis have been *** retrospectively analyzing the clinical data of EGC patients,we can better under-stand the status of lymph node metastasis and its impact on survival and *** To evaluate the prognosis of EGC patients and the factors that affect lymph node METHODS The clinicopathological data of 1011 patients with EGC admitted to our hospital between January 2015 and December 2023 were collected in a retrospective cohort *** were 561 males and 450 *** mean age was 58±11 *** patient underwent radical *** status of lymph node metastasis in each group was determined according to the pathological examination results of surgical *** outcomes were as follows:(1)Lymph node metastasis in EGC patients;(2)Analysis of influencing factors of lymph node metastasis in EGC;and(3)Analysis of prognostic factors in patients with *** distributed measurement data are expressed as mean±SD,and a t test was used for comparisons between *** data are expressed as absolute numbers or percentages,and the chi-square test was used for comparisons between *** data were compared using a nonparametric rank sum test.A log-rank test and a logistic regression model were used for univariate analysis.A logistic stepwise regression model and a Cox stepwise regression model were used for multivariate *** Kaplan-Meier method was used to calculate the survival rate and construct survival curves.A log-rank test was used for survival *** Analysis of influencing factors of lymph node metastasis in *** results of the multifactor analysis showed that tumor length and diameter,tumor site,tumor invasion depth,vascular thrombus,and tumor differentiation degree were independent influencing factors for lymph node metastasis in patients with EGC(odds ratios=1.80,1.49,2.6

关键词： Gastric neoplasms Lymph node metastasis Prognosis Influencing factor Retrospective study

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Risk assessment of water security in Haihe River Basin during drought periods based on D-S evidence theory

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Water Science and Engineering 2014年第2期7卷 119-132页

作者： Qian-jin dong Xia LIU State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Hubei Provincial Collaborative Innovation Center for Water Resources Security Wuhan University School of Geography and Planning Sun Yat-sen University

The weights of the drought risk index （DRI）, which linearly combines the reliability, resiliency, and vulnerability, are difficult to obtain due to complexities in water security during drought periods. Therefore, drought entropy was used to determine the weights of the three critical indices. Conventional simulation results regarding the risk load of water security during drought periods were often regarded as precise. However, neither the simulation process nor the DRI gives any consideration to uncertainties in drought events. Therefore, the Dempster-Shafer （D-S） evidence theory and the evidential reasoning algorithm were introduced, and the DRI values were calculated with consideration of uncertainties of the three indices. The drought entropy and evidential reasoning algorithm were used in a case study of the Haihe River Basin to assess water security risks during drought periods. The results of the new DRI values in two scenarios were compared and analyzed. It is shown that the values of the DRI in the D-S evidence algorithm increase slightly from the original results of Zhang et al. （2005）, and the results of risk assessment of water security during drought periods are reasonable according to the situation in the study area. This study can serve as a reference for further practical application and planning in the Haihe River Basin, and other relevant or similar studies.

关键词： risk assessment " water security " drought periods " entropy " D-S evidence theory "evidential reasoning algorithm " Haihe River Basin

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建设基于下一代测序技术(NGS)的传染病监测预警平台构想

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中国口岸科学技术 2024年第3期6卷 4-10页

作者：潘衍宇竺文杰金东新刘曦宇张俊波镇海海关宁波315000 宁波海关宁波315000

我国海关坚持“口岸疫情防控海关必坚守”要求,身处“外防输入”的第一线,严格落实“多病同防”工作,亟需既能进行深度病原识别及精准溯源,又能承担未来口岸常规传染病监测的统一化实验室监测预警平台。下一代测序技术为口岸在传染病监... 详细信息

我国海关坚持“口岸疫情防控海关必坚守”要求,身处“外防输入”的第一线,严格落实“多病同防”工作,亟需既能进行深度病原识别及精准溯源,又能承担未来口岸常规传染病监测的统一化实验室监测预警平台。下一代测序技术为口岸在传染病监测提供了新的借鉴思路。本文介绍了若干全球范围内传统及新型的传染病监测预警平台架构及优缺点,并提出了组建基于下一代测序技术的海关系统新型传染病监测预警实验室平台的一些设计构想,为科学精准做好口岸疫情防控工作,实现精准检疫提供技术性参考。

关键词：全基因组测序宏基因组测序传染病监测预警海关

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不同钝化剂对铅镉重金属污染土壤的修复影响研究

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化学工程师 2024年第3期38卷 37-41页

作者：冯夏丽裴雪慧门雪燕董进勇杨晓伟安阳市固体废物和化学品技术管理中心河南安阳455000 安阳市生态环境科学研究所河南安阳455000 安阳市生态环境监控中心河南安阳455000

为研究不同种类钝化剂对铅、镉重金属污染土壤的修复效果影响,选择某化工厂铅、镉污染比较严重的黄壤作为修复对象,采用单一的无机钝化剂、生物炭类钝化剂、矿物钝化剂和有机-无机混合钝化剂对土壤进行修复。在不同类型钝化剂下,设计三... 详细信息

为研究不同种类钝化剂对铅、镉重金属污染土壤的修复效果影响,选择某化工厂铅、镉污染比较严重的黄壤作为修复对象,采用单一的无机钝化剂、生物炭类钝化剂、矿物钝化剂和有机-无机混合钝化剂对土壤进行修复。在不同类型钝化剂下,设计三因素三水平正交实验,除了钝化剂类型之外,所有条件都相似,研究上述各个类型钝化剂对土壤中铅、镉含量的钝化效率影响。研究结果表明,实验中所选择的生物炭、石灰、含硫型土壤调理剂、硅藻土按照一定比例混合而成的矿物钝化剂,对受试土壤中重金属铅、镉的钝化效果最好;通过正交实验结果可知,在矿物钝化剂使用量为460kg·hm^(-2)、土壤水分为50%、土壤粒径>2mm的情况下,能够获得最佳的铅、镉钝化效果,钝化效率分别为79.85%和87.18%。

关键词：土壤修复钝化剂铅镉重金属重金属污染正交实验

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纤维金属层合板抗冲击性能研究进展

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辽宁工业大学学报（自然科学版） 2024年第2期44卷 105-108,114页

作者：龙尚琳章文姣孔祥清董锦坤周渊名辽宁工业大学土木建筑工程学院辽宁锦州121001 锦州市产品质量监督检验所(国家光伏材料质量检验检测中心) 辽宁锦州121001

综述了2种常见的纤维金属层合板在抗冲击性能及损伤失效模式等方面的研究,旨在全面了解FMLs成分和材料铺排方式等因素对FMLs抗冲击性能的影响,为改善FMLs材料抗冲击性能提供依据。归纳总结了提高FMLs材料抗冲击性能的方法,并指出未来新... 详细信息

综述了2种常见的纤维金属层合板在抗冲击性能及损伤失效模式等方面的研究,旨在全面了解FMLs成分和材料铺排方式等因素对FMLs抗冲击性能的影响,为改善FMLs材料抗冲击性能提供依据。归纳总结了提高FMLs材料抗冲击性能的方法,并指出未来新型FMLs材料和结构抗冲击性能的研究方向。

关键词：纤维金属层合板抗冲击损伤失效

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