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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He li li Sai Wang Shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

计算机控制的列表方式多参数Ge(li)-Ge(li)符合系统

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核技术 1983年第4期 15-18页

作者：李生岗袁观俊翁培焜中国科学院原子能研究所

本文介绍研制的计算机控制的列表方式参数Ge(li)-Ge(li)符合系统的实验装置、定时特性、数据处理以及应用举例,关于列表方式数据获取与分析方法的工作特点,这里不再赘述。

关键词： li 分辨时间上升时间计算机控制电脑控制 Ge

Recent progress in li-S and li-Se batteries

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Rare Metals 2017年第5期36卷 339-364页

作者： lin-Chao Zeng Wei-Han li Yu Jiang Yan Yu Chinese Academy of Sciences Key Laboratory of Materials for Energy Conversion Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

li–S and li–Se batteries have attracted tremendous attention during the past several decades, as the energy density of li–S and li–Se batteries is high（several times higher than that of traditional li-ion batteries）.Besides, li–S and li–Se batteries are low cost and environmental benign. However, the commercial applications of li–S and li–Se batteries are hindered by the dissolution and shuttle phenomena of polysulfide（polyselenium）, the low conductivity of S（Se）, etc. To overcome these drawbacks, scientists have come up with various methods, such as optimizing the electrolyte, synthesizing composite electrode of S/polymer, S/carbon, S/metal organic framework（MOF） and constructing novelty structure of *** this review, we present a systematic introduction about the recent progress of li–S and li–Se batteries, especially in the area of electrode materials, both of cathode material and anode material for li–S and li–Se batteries. In addition, other methods to lead a high-performance li–S and li–Se batteries are also briefly summarized, such as constructing novelty battery structure, adopting proper charge–discharge conditions, heteroatom doping into sulfur molecules, using different kinds of electrolytes and binders. In the end of the review, the developed directions of li–S and li–Se batteries are also pointed out. We believe that combining proper porous carbon matrix and heteroatom doping may further improve the electrochemical performance of li–S and li–Se batteries. We also believe that li–S and li–Se batteries will get more exciting results and have promising future by the effort of battery community.

关键词： li–S and li–Se batteries Low cost Novelty battery structure Porous carbon matrix Heteroatom doping

Tailoring the Spatial Distribution and Content of Inorganic Nitrides in Solid-Electrolyte Interphases for the Stable li Anode in li-S Batteries

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Energy & Environmental Materials 2022年第4期5卷 1180-1188页

作者： Qi Jin Kaixin Zhao Lu li Xinzhi Ma lili Wu Xitian Zhang Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China

Among the alternatives to lithium-ion batteries,lithium-sulfur(li-S)batteries are considered as an attractive option because of their high theoretical energy density of 2570 Wh kg^(−1).However,the application of the li-S battery has been plagued by the rapid failure of the li anode due to the li dendrite growth and severe parasitic reactions between li and lithium *** physicochemical properties of the solid-electrolyte interphase have a profound impact on the performance of the li ***,a lithium polyacrylic acid/lithium nitrate(LPL)-protective layer is developed to inhibit the dendrite li growth and parasitic reactions by tailoring the spatial distribution and content of liN_(x)O_(y) and li_(3)N at the *** modified SEI is thoroughly investigated for compositions,ion transport properties,and li plating/stripping ***,the li-S cell with a high S loading cathode(5.0 mg cm^(−2)),LPL layer-protected thin li anode(50μm),and 40μL electrolyte shows a long life span of 120 *** work evokes the avenue for regulating the spatial distribution of inorganic nitride at the SEI to suppress the formation of li dendrites and parasitic reactions in li-S batteries and perhaps guiding the design of analogous battery systems.

关键词： li anode li dendrites liPAA/liNO_(3)layer SEI shuttle effect

li-ion storage performance and electrochemically induced phase evolution of layer-structured li[li0.2Mn0.54Ni0.13Co0.13]02 cathode material

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Frontiers of Materials Science 2016年第2期10卷 187-196页

作者： Ying WANG Hong ZHANG Zhiyuan MA Gaomin WANG Zhicheng li State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China School of Materials Science and Engineering Central South University Changsha 410083 China

li-rich li[li0.2Mn0.54Ni0.13Co0.13]02（LMNC） powders were synthesized by a gel-combustion method. The related microstructure, electrochemical performance and electrochemically induced phase evolution were characterized. The 900℃ calcined powders have a hexagonal layered structure with high ordered degree and low cationic mixing level. The calcined materials as cathode electrode for li-ion battery deliver the high electrochemical properties with an initial discharge capacity of 243.5 mA. h. g-1 at 25 mA.g-1 and 249.2 mA-h.g-1 even after 50 cycles. The electrochemically induced phase evolution investigated by a transmission electron microscopy indicates that li＋ ions deintercalated first from the liMO2 （M = Mn, Co, Ni） component and then from li2MnO3 component in the LMNC during the charge process, while li＋ ions intercalated into li1-xMO2 component followed by into MnO2 component during the discharge process.

关键词： li[li0.2Mn0.54Ni0.13Co0.13]02 gel-combustion synthesis phase evolution li-storage capacity electrochemical reaction

Distinctive electrochemical performance of novel Fe-based li-rich cathode material prepared by molten salt method for lithium-ion batteries

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Journal of Energy Chemistry 2019年第6期28卷 37-45页

作者： Taolin Zhao Rixin Ji Hedi Yang Yuxia Zhang Xiuguo Sun Yanting li li li Renjie Chen School of Materials Science and Engineering Shijiazhuang Tiedao UniversityShijiazhuang 050043HebeiChina Hebei Provincial Key Laboratory of Traffic Engineering Materials Shijiazhuang 050043HebeiChina School of Materials Science & Engineering Beijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

For constructing next-generation lithium-ion batteries with advanced performances,pursuit of highcapacity li-rich cathodes has caused considerable *** far,the low discharge specific capacity and serious capacity fading are strangling the development of Fe-based li-rich *** activate the extra-capacity of Fe-based li-rich cathode materials,a facile molten salt method is exploited using an alkaline mixture of liOH–liNO3–li2O2 in this *** prepared li1.09(Fe0.2Ni0.3Mn0.5)0.91O2 material yields high discharge specific capacity and good cycling *** discharge specific capacity shows an upward tendency at 0.1 *** 60 cycles,a high reversible specific capacity of ~250 m Ah g-1is *** redox of Fe3+/Fe4+and Mn3+/Mn4+are gradually activated during ***,the redox reaction of Fe2+/Fe3+can be observed reversibly below 2 V,which is quite different from the material prepared by a traditional co-precipitation *** stable morphology of fine nanoparticles(100–300 nm)is considered benefiting for the distinctive electrochemical performances of li1.09(Fe0.2Ni0.3Mn0.5)*** study demonstrates that molten salt method is an inexpensive and effective approach to activate the extra capacity of Fe-based li-rich cathode material for high-performance lithium-ion batteries.

关键词： lithium-ion batteries Fe-based material li-rich cathode Molten salt High capacity

A gradient solid electrolyte interphase with high li+conductivity induced by bisfluoroacetamide additive for stable lithium metal batteries

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Nano Research 2023年第6期16卷 8425-8432页

作者： Zhaoyang Sun Ziyue Wen Yi Chen Yue Ma Jinxiang Zhang Yuejiao li li li Renjie Chen Beijing Key Laboratory of Environmental Science and Engineering School of Material Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Institute of Advanced Technology Beijing Institute of TechnologyJinan 250300China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Stable li metal anodes have become the driving factor for high-energy-density battery ***,uncontrolled growth of li dendrite hinders the application of rechargeable li metal batteries(LMBs).Here,a multifunctional electrolyte additive bisfluoroacetamide(BFA)was proposed to facilitate high-performance *** uniform and dense deposition of li^(+) was achieved due to the reduced nucleation and plateau overpotential by the addition of ***,X-ray photoelectron spectroscopy(XPS)tests reveal a gradient solid electrolyte interface(SEI)structure on the li metal *** voltammetry(CV)curves at different sweep speeds prove the formation of pseudocapacitance at the electrode-electrolyte interface,which accelerates the li+transport rate and protects the electrode *** low activation energy also indicates the ability of rapid li^(+) transportation in electrolyte ***,the li||li symmetric cells with 1.0 wt.%BFA electrolyte exhibit good cycling performance at 0.5 mA·cm^(−2)for over 2000 h,and li||liNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)(NCM622)full cells maintain a high capacity for 200 cycles at 1 C rate.

关键词： electrolytes additives solid electrolyte interphase li dendrites li metal batteries

Ultrasound features of congenital cytomegalovirus infection in the first trimester:A case report

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World Journal of Clinical Cases 2025年第5期13卷 30-35页

作者： Xiao-li Chen li-Qiang Zhang li-li Bai Department of Ultrasound Wenzhou Central HospitalWenzhou 325000Zhejiang ProvinceChina

BACKGROUND Congenital cytomegalovirus(CMV)infection represents a significant public health concern as the most prevalent viral infection in newborns,potentially leading to severe neurological and developmental *** majority of cases are asymptomatic and remain undetected during pregnancy due to the absence of effective screening *** SUMMARY A 27-year-old primigravida presented for early pregnancy ultrasound,which revealed an atypical finding:A normal anechoic thalamus appearing hyperechoic on the mid-sagittal view of the fetal *** ultrasound examinations during mid and late gestation demonstrated classic intracranial features sug-gestive of congenital CMV *** karyotyping and microarray analysis of the fetus yielded no significant *** compre-hensive prenatal counseling regarding potential adverse fetal outcomes,the patient elected to continue her *** ultimately underwent cesarean delivery at 42 weeks gestation at another facility,resulting in the birth of a female *** five months of age,the infant presented with epilepsy and significant growth and developmental *** Congenital CMV infection occurs during the first trimester may manifest as hyperechoic thalamus which can be revealed by ultrasound in the mid-saggital view of the fetal *** research should investigate the correlation between echogenic thalamus and developmental outcomes,as well as explore early sc-reening techniques for suspected congenital CMV infection cases.

关键词： Prenatal diagnosis Congenital infection Cytomegalovirus Fetal ultrasound Case report

Formation Mechanism and Binding Energy for Body-Centred Regular Octahedral Structure of li7 Cluster

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Communications in Theoretical Physics 2007年第4X期48卷 717-720页

作者： MA Hai-Rong li Ping GOU Qing-Quan li Hui-li Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China

The formation mechanism for the body-centred regular octahedral structure of li7 cluster is proposed. The curve of the total energy versus the separation R between the nucleus at the centre and nuclei at the apexes for this structure of li7 has been calculated by using the method of Gou＇s modified arrangement channel quantum mechanics （MACQM）. The result shows that the curve has a minimal energy of-52.169 73 a.u. at R = 5.06ao. When R approaches infinity, the total energy of seven lithium atoms has the value of-51.996 21 a.u. So the binding energy of li7 with respect to seven lithium atoms is 0.173 52 a.u. Therefore the binding energy per atom for li7 is 0.024 79 a.u. or 0.674 eV, which is greater than the binding energy per atom of 0.453 eV for li2, the binding energy per atom of 0.494 eV for li3 and the binding energy per atom of 0.632 eV for li5 calculated previously by us. This means that the li7 cluster may be formed stably in a body-centred regular octahedral structure with a greater binding energy.

关键词： li7 cluster formation mechanism binding energy