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Stable Li storage in micron-sized SiO_(x) particles with rigid-flexible coating

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Journal of Energy Chemistry 2022年第1期31卷 309-314,I0009页

作者： Ming-Yan Yan Zhu Liu Zhuo-Ya Lu Lin-Bo Huang Ke-Cheng Jiang hong-liang Li Sen Xin Quan Xu Yu-Guo Guo CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China College of Materials Science and Engineering State Key Laboratory of Biopolysaccharide Fiber Forming and Eco-TextileQingdao UniversityQingdao 266071ShandongChina Beijing IAmetal New Energy Technology Co. LtdBeijing 100190China Dongguan TAFEL New Energy Technology Co. LtdDonggiian 523000.GuangdongChina

Micrometre-sized electrode materials have distinct advantages for battery applications in terms of energy density,processability,safety and *** the silicon monoxide anode that undergoes electrochemical alloying reaction with Li,the Li(de)intercalation by micron-sized active particles usually accompanies with a large volume variation,which pulverizes the particle structure and leads to rapidly faded storage *** this work,we proposed to stabilize the electrochemistry *** of the micron-SiO_(x) anode by forming a rigid-flexible bi-layer coati ng on the particle *** coati ng consists of pyrolysis carbon as the inner layer and polydopamine as the outer *** the inner layer guarantees high structural rigidity at particle surface and provides efficient pathway for electron conduction,the outer layer shows high flexibility for maintaining the integrity of micrometre-sized particles against drastic volume variation,and together they facilitate formation of stable solid electrolyte interface on the SiO_(x) particles.A composite an ode prepared by mixing the coated micron-SiOx with graphite delivered improved Li storage performance,and promised a high-capacity,long-life LiFePO_(4)/SiO_(x)-graphite pouch *** strategy provides a general and feasible solution for building high-energy rechargeable batteries from micrometre-sized electrode materials with significant volume variation.

关键词： Lithium-ion batteries Anodes Micron-SiOx Rigid and flexible coating

Weakly-solvating electrolytes enable ultralow-temperature (-80°C) and high-power CF_(x)/Li primary batteries

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Science China Chemistry 2023年第7期66卷 1982-1988页

作者： Hao-Jie liang Meng-Yuan Su Xin-Xin Zhao Zhen-Yi Gu Jia-Lin Yang wei Guo Zhi-Ming Liu Jing-Ping Zhang Xing-Long Wu MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchun 130024China Department of Chemistry Northeast Normal UniversityChangchun 130024China Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal UniversityGan Zhou 341000China Qingdao University of Science and Technology Qingdao 260061China

Fluorinated carbons(CF_(x))/Li primary batteries with high theoretical energy density have been applied as indispensable energy storage devices with no need for rechargeability,yet plagued by poor rate capability and narrow temperature adaptability in actual ***,benefiting from precise solvation engineering for synergistic coordination of anions and low-affinity solvents,the optimized cyclic ether-based electrolyte is elaborated to significantly facilitate overall reaction dynamics closely correlated to lower desolvation *** a result,the excellent rate(15 C,650 mAh g^(-1))at room-temperature and ultra-lowtemperature performance dropping to-80°C(495 mAh g^(-1)at average output voltage of 2.11 V)is delivered by the end of 1.5 V cut-off voltage,far superior to other organic liquid ***,the CF_(x)/Li cell employing the high-loading electrode(18-22 mg cm^(-2))still yields 1,683 and 1,395 Wh kg^(-1)in the case of-40°C and-60°C,*** short,the novel design strategy for cyclic ethers as basic solvents is proposed to enable the CF_(x)/Li battery with superb subzero performances,which shows great potential in practical application for extreme environments.

关键词： CF_(x)/Li primary batteries solvation engineering desolvation barrier ultra-low temperature

Study of Deuteron Separation Energy Based on Bayesian Neural Network Approach

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原子能科学技术 2023年第4期57卷 721-728页

作者： XING Kang liang Yan SUN Xiaojun College of Physics and Technology Guangxi Normal UniversityGuilin 541004China Guangxi Key Laboratory of Nuclear Physics and Technology Guangxi Normal UniversityGuilin 541004China

Deuteron separation energy is not only the basis for validating the nuclear mass models and nucleon-nucleon interaction potential,but also can determine the stability of a nuclide to certain *** neural network(BNN)approach,which has strong predictive power and can naturally give theoretical errors of predicted values,had been successfully applied to study the different kinds of separations except the deuteron *** this paper,several typical nuclear mass models,such as macroscopic model BW2,macroscopic-microscopic model WS4,and microscopic model HFB-31,are chosen to study the deuteron separation energy combining BNN *** root-mean-square deviations of these models are partly *** addition,the inclusion of physical parameters related to the pair and shell effects in the input layer can further improve the theoretical accuracy for the deuteron separation *** results show that the theoretical predictions are more reliable as more physical features of BNN approach are included.

关键词： Bayesian neural network deuteron separation energy pair and shell effects

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Development Status of China's Gas Market

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China Oil & Gas 2009年第2期16卷 49-53页

作者： Li wei Wang liang PetroChina Planning and Engineering Institute Natural Gas Pipeline Company PetroChina

Natural gas, a kind of clean energy and chemical raw materials with high quality and high efficiency, has been widely used in various fields of national life and production. According to statistics, the proportion of ... 详细信息

关键词：清洁能源原料种类天然气高效率消费量

Measurements of Creep Internal Stress Based on Constant Strain Rate and Its Application to Engineering

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International Journal of Plant Engineering and Management 2006年第1期11卷 59-64页

作者： TAO Wen-liang wei Tao College of Mechanical and Power Engineering Nanjing University of Technology Nanjing 210009 P. R. China College of Chemical Engineering Guizhou University Guiyang 550003 P. R. China

This research is carried out on the basis of Constant Strain Rate （CSR） to measure creep internal stress. Measurements of creep internal stress are conducted on the material test machine by using the CSR method. A m... 详细信息

关键词： CSR creep creep internal stress furnace tube creep rupture

Occurrence and risk assessment of triclosan in freshwater lakes in the middle Yangtze River basin (Wuhan, Central China)

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Water Biology and Security 2022年第4期1卷 87-95页

作者： Yuewei Wang Deshou Cun Zihan Zhang Dongwei Pu Xiaohui Li wei liang Tao Fang Institute of Hydrobiology Chinese Academy of SciencesWuhan430072China University of Chinese Academy of Sciences Beijing100049China

Triclosan(TCS)is an endocrine disrupting chemical which is commonly used as a disinfectant in pharmaceuticals and personal care products(PPCP's).Since early 2020,the worldwide outbreak of COVID-19 has increased the use of PPCP's,so the occurrence and impact of TCS on freshwater lakes should be ***,little attention has been given to the effect of TCS on freshwater lakes in *** study is the first attempt at a risk assessment focusing on the temporal and spatial occurrence of TCS in freshwater lakes in the middle Yangtze River *** surface water and sediments of Donghu Lake and liangzi Lake(Wuhan,Central China)were collected from October 2020 to August *** maximum concentrations of TCS were 466 ng/L and 239 ng/L in surface water,71 ng/g and 25 ng/g(dry weight)in sediments of Donghu Lake and liangzi Lake,*** temporal and spatial differences of TCS were observed within and between the lakes,with the highest concentrations measured in ***,higher concentrations of TCS were observed in areas that are more impacted by human *** was a significant positive correlation between TCS and nitrogen in the surface water.A risk assessment using the risk quotient(RQ)method showed that a potentially high risk(RQ>1)was found only in surface waters from Donghu Lake,and that the sediments posed a lower risk than the surface *** results provide timely data on the temporal and spatial occurrence of TCS in freshwater lakes in China following the outbreak of COVID-19 and demonstrate a possible high risk of exposure to TCS for aquatic biota.

关键词： Triclosan Freshwater lakes Occurrence Spatial and temporal distribution Risk assessment

Transcriptional regulation of oil biosynthesis inseed plants: Current understanding, applications,and perspectives

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Plant Communications 2022年第5期3卷 19-37页

作者： Yuzhou Yang Que Kong Audrey R.Q.Lim Shaoping Lu Hu Zhao liang Guo Ling Yuan wei Ma School of Biological Sciences Nanyang Technological UniversitySingapore 637551Singapore National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Hubei hongshan Laboratory Wuhan 430070China Department of Plant and Soil Sciences Kentucky Tobacco Research and Development CenterUniversity of KentuckyLexingtonKY 40546USA Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China

Plants produce and accumulate triacylglycerol(TAG)in their seeds as an energy reservoir to support the processes of seed germination and seedling *** seed oils are vital not only for the human diet but also as renewable feedstocks for industrial *** biosynthesis consists of two major steps:de novo fatty acid biosynthesis in the plastids and TAG assembly in the endoplasmic *** latest advances in unraveling transcriptional regulation have shed light on the molecular mechanisms of plant oil *** summarize recent progress in understanding the regulatory mechanisms of wellcharacterized and newly discovered transcription factors and other types of regulators that control plant fatty acid *** emerging picture shows that plant oil biosynthesis responds to developmental and environmental cues that stimulate a network of interacting transcriptional activators and repressors,which in turn fine-tune the spatiotemporal regulation of the pathway genes.

关键词： plant oil biosynthesis oil accumulation seed development environmental and developmental signals transcription factor transcriptional regulation

Design Method of Reversely Switched Dynistor Based Pulse Circuit Without Magnetic Switch

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 306-314页

作者： Yicheng Pi Lin liang Xiaoxue Yan State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In the reversely switched dynistor(RSD)-based pulse power circuits,a magnetic switch is usually necessary to be applied together with a main *** occupies space and needs a magnetic *** this paper,a method of designing a RSD-based pulse circuit without a magnetic switch is *** the pulse circuit,a RBDT(reverse blocking diode thyristor)is used to separate the two capacitors and provide an energy *** pre-charge time of the RSD can be guaranteed by the energy conversion between the capacitors and inductors,instead of the saturation of the magnetic *** addition,the energy which is reused to trigger the RSD is based on an *** pulse circuit is evaluated by simulations and practical *** to the experimental results,the factors affecting the load pulse current and triggering of the RSD and RBDT are ***,a method to reduce the current in the trigger switch,which is a potential problem in the pulse circuit,is proposed.

关键词： Magnetic switch pulse power circuit reversely switched dynistor(RSD) reverse blocking diode thyristor(RBDT)

Investigation progresses of rare earth complexes as emitters or sensitizers in organic light-emitting diodes

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Light(Science & Applications) 2022年第7期11卷 1397-1413页

作者： Shuaibing Li liang Zhou hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences130022 ChangchunChina University of Science and Technology of China 230027 HefeiChina Department of Chemistry Tsinghua University100084 BeijingChina

Due to unique photo-physical characteristics,rare earth(RE)complexes play important roles in many fields,for example,telecommunications,life science,and organic light-emitting diodes(OLEDs).Especially,thanks to narrow emission bandwidth and 100%theoretical internal quantum efficiency(IQE),the study of RE complexes in the electroluminescence field has been a hot research topic in recent 30 *** a leading technology in solid-state light source fields,OLEDs have attracted great interest from academic researchers and commercial *** the last decades,OLED-based products have trickled into the commercial market and developed quickly into portable display ***,we briefly introduce the luminescent characteristics and electroluminescent(EL)study of RE complexes in material synthesis and device ***,we emphatically reveal the innovative application of RE complexes as sensitizers in *** experimental validation,the application of RE complexes as sensitizers can realize the complementary advantages of RE complexes and transition metal complexes,leading to significantly improved performances of *** application of RE complexes as sensitizers provides a new strategy for designing and developing novel high performances OLEDs.

关键词： complexes rare earth