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Solid-state lithium-ion batteries for grid energy storage:opportunities and challenges

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Science China Chemistry 2024年第1期67卷 43-66页

作者： Xin Chang yu-ming zhao Boheng yuan Min Fan Qinghai Meng yu-Guo Guo Li-Jun Wan 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 University of Chinese Academy of Sciences Beijing 100049China

The energy crisis and environmental pollution drive more attention to the development and utilization of renewable *** the capricious nature of renewable energy resource,it has difficulty supplying electricity directly to consumers stably and efficiently,which calls for energy storage systems to collect energy and release electricity at peak *** to their flexible power and energy,quick response,and high energy conversion efficiency,lithium-ion batteries stand out among multiple energy storage technologies and are rapidly deployed in the *** superior performance and ensuring the safety of energy storage systems,intrinsically safe solid-state electrolytes are expected as an ideal alternative to liquid *** this review,we systematically evaluate the priorities and issues of traditional lithium-ion batteries in grid energy *** lithium-ion batteries containing liquid electrolytes,solid-state lithium-ion batteries have the potential to play a more significant role in grid energy *** challenges of developing solid-state lithium-ion batteries,such as low ionic conductivity of the electrolyte,unstable electrode/electrolyte interface,and complicated fabrication process,are discussed in ***,the safety of solid-state lithium-ion batteries is *** the obtained insights,inspiring prospects for solid-state lithium-ion batteries in grid energy storage are depicted.

关键词： lithium-ion batteries grid energy storage solid-state electrolytes interface stability

FULLY RESOLVED NUMERICAL SIMULATION OF TURBULENT PIPE FLOWS LADEN WITH LARGE NEUTRALLY-BUOYANT PARTICLES

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Journal of Hydrodynamics 2011年第1期23卷 21-25页

作者： WU Teng-hu SHAO Xue-ming yu zhao-sheng State Key Laboratory of Fluid Power Transmission and Control Department of Mechanics Zhejiang UniversityHangzhou 310027 China

In this article,we employ a fully-resolved numerical simulation method（the fictitious domain method）to investigate the effects of large neutrally-buoyant particles on the turbulent flow in a pipe at low Reynolds number and non-dilute *** tube Reynolds number is fixed to be 4 900,the particle-pipe diameter ratio is 0.1,and the particle volume fraction ranges from 0.33%to 10%.Our results indicate that the presence of large particles decreases the maximum root-of-mean-square（rms）of the streamwise velocity fluctuation near the wall by weakening the intensity of large-scale streamwise vortices,although in the region very close to the wall the particles increase the rms of streamwise velocity *** the other hand,the particles induce small-scale vortices in the near-wall region,resulting in the enhancement of the rms of radial and circumferential velocity fluctuations there.

关键词： fully-resolved direct numerical solution particulate turbulent pipe flow large particles particle-turbulence interactions

On the Relation Between Coronal Green Line Brightness and Magnetic Fields Intensity

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Research in Astronomy and Astrophysics 2022年第7期22卷 128-138页

作者： Xue-Fei Zhang yu Liu ming-yu zhao Teng-Fei Song Jing-Xing Wang Xiao-Bo Li Zi-Han Li yunnan Observatories Chinese Academy of SciencesKunming 650011China University of Chinese Academy of Sciences Beijing 100049China yunnan Normal University School of Physics and Electronic InformationKunming 650000China

Two-dimensional(2 D) solar coronal magnetogram is difficult to be measured directly until *** the previous knowledge,a general relation has been noticed that the brighter green-line brightness for corona,the higher coronal magnetic field intensity may correspond *** try to further reveal the relationship between coronal green line brightness and magnetic field intensity,we use the 2 D coronal images observed by yunnan Observatories Greenline Imaging System(YOGIS) of the 10 cm Lijiang coronagraph and the coronal magnetic field maps calculated from the current-free extrapolations with the photospheric magnetograms taken by Helioseismic and Magnetic Imager(HMI) on board the Solar Dynamics Observatory(SDO) *** our analysis,we identified the coronal loop structures and construct two-dimensional maps of the corresponding magnetic field intensity in the plane of the sky(POS) above the *** derive the correlation coefficients between the coronal brightness and the magnetic field intensity for different heights of coronal *** further use a linear combination of a Gaussian and a quadratic profile to fit the correlation coefficients distribution,finding a largest correlation coefficient of 0.82 near 1.1 R(solar radii) where is almost the top of the closed loop *** the small closed loop system identified,the correlation coefficient distributions crossing and covering the loop are *** also investigate the correlation with extended heliocentric latitude zones and long period of one whole Carrington Rotation,finding again that the maximum correlation coefficient occurs at the same *** is the first time for us to find that the correlation coefficients are high(all are larger than 0.8) at the loop-tops and showing poor correlation coefficients with some fluctuations near the feet of the coronal *** findings indicate that,for the heating of the low-latitude closed loops,both DC(dissipation of currents) and AC(dissipation of Alfvé

关键词： Sun:magnetic fields Sun:corona Stars:coronae Sun:activity Sun:atmosphere Sun:coronal mass ejections(CMEs) Sun:fundamental parameters Sun:heliosphere Sun:UV radiation

Study of large medical equipment allocation in Xuzhou

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第12期8卷 881-884页

作者： MIAO Chun-xia ZHUO Lang GU yu-ming QIN zhao-hui School of Public Health Xuzhou Medical College Xuzhou 221002 China

Objective: To investigate the allocation and management of large medical equipment (LME) in Xuzhou, Jiangsu Province, China, in order to make the best use of LME to meet the medical needs of local people. Methods: The research collected data from all hospitals that have LME in Xuzhou using questionnaire; 38 (97.4%) hospitals returned the questionnaire. Results: In Xuzhou, there are a total of 71 pieces of LME, each serving 126 600 people in an area of 163 km2. Sixty-two percent of them are allocated in urban areas, with Gini coefficient at 0.52, indicating imbalance and biased allocation of LME. Conclusion: The al- location of LME in Xuzhou is out of control and unfairly allocated.

关键词： Large medical equipment (LME) Computerized tomography (CT) Allocation Gini coefficient

Advances of polymer binders for silicon-based anodes in high energy density lithium-ion batteries

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InfoMat 2021年第5期3卷 460-501页

作者： yu-ming zhao Feng-Shu yue Shi-Cheng Li yu Zhang Zhong-Rong Tian Quan Xu Sen Xin 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)BeijingChina Shenzhen EUBO New Material Technology Co. LtdShenzhenChina University of Chinese Academy of Sciences BeijingChina

Conventional lithium-ion batteries(LIBs)with graphite anodes are approaching their theoretical limitations in energy *** the conventional graphite anodes with high-capacity Si-based anodes represents one of the most promising strategies to greatly boost the energy density of ***,the inherent huge volume expansion of Si-based materials after lithiation and the resulting series of intractable problems,such as unstable solid electrolyte interphase layer,cracking of electrode,and especially the rapid capacity degradation of cells,severely restrict the practical application of Sibased *** the past decade,numerous reports have demonstrated that polymer binders play a critical role in alleviating the volume expansion and maintaining the integrity and stable cycling of Si-based *** this review,the state-of-the-art designing of polymer binders for Si-based anodes have been systematically summarized based on their structures,including the linear,branched,crosslinked,and conjugated conductive polymer ***,the comprehensive designing of multifunctional polymer binders,by a combination of multiple structures,interactions,crosslinking chemistries,ionic or electronic conductivities,soft and hard segments,and so forth,would be promising to promote the practical application of Si-based ***,a perspective on the rational design of practical polymer binders for the large-scale application of Si-based anodes is presented.

关键词： high energy density lithium-ion battery multifunctional binder polymer binder silicon anode

Preparation of GaN Powder of Nanometer Scale by MOCVD Using DEGA as Precursor

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Chinese Chemical Letters 1997年第2期8卷 185-188页

作者： yu ming zhao Ke Yan ZHOU yun Cheng yuAN(Department of Chemistry, Delian University of Technology, Delian 116012) Department of Chemistry Dalian University of Technology Dalian 116012 China

GaN powder of nanometer scale was prepared by metal organic chemical vapor deposition using diethylgallium azide as precursor. The resulting powder was characterized by XRD and TEM. It has been found that the particle size of the powder obtained is affected by the deposition temperature, and the fine crystals formed in temperature range 500 similar to 650 degrees C were hexagonal.

关键词： MOCVD GaN Preparation of GaN Powder of Nanometer Scale by MOCVD Using DEGA as Precursor

An altemative synthetic approach towards erythrinan and homoerythrinan alkaloids by tandem semipinacol/intramolecular Schmidt reaction

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Chinese Chemical Letters 2007年第8期18卷 917-919页

作者： Pei ming Gu yu ming zhao Yong QiangTu Min Wang Shu yu Zhang State Key Laboratory of Applied Organic Chemistry Department of Chemistry Lanzhou University Lanzhou 730000 China

An alternative construction of A-B-D ring-system of erythrinan and homoerythrinan alkaloids by TiCl4-mediated tandem semipinacol/intramolecular Schmidt reaction of α-siloxyepoxyazide was addressed and the unusual epo... 详细信息

关键词： Tandem Intramolecular Schmidt reaction Semipinacol Alkaloid

Forest fire danger ratings in the 2040s for northeastern China

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Forestry Studies in China 2011年第2期13卷 85-96页

作者： TIAN Xiao-rui SHU Li-fu WANG ming-yu zhao Feng-jun Key Open Laboratory of Forest Protection of the State Forestry Administration Research Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091 E R. China

The average temperature of northeastern China is expected to increase 2.22 and 2.55℃ under two scenarios selected from the Intergovemmental Panel on Climate Change （IPCC）, i.e., A2 and B2, during the 2040s （2041-2050）, which will have an impact on fire activities in those areas. We calculated the output of regional climate models, using the Canadian Forest Fire Weather Index （FWI） on a scale of 50 km × 50 km. Meteorological data and fire weather index were interpolated to a scale of 1 km × 1 km by using ANUSPLIN software. The results show that the model of Providing Regional Climate for Impacts Studies （PRECIS） had the ability to provide good temperature and precipitation estimates of the study area in the baseline period, by simulation. In the 2040s the mean FWI values of the study area will increase during most of the fire seasons under both selected scenarios, compared with the baseline period. Under scenario B2 the peak fire season will appear in advance. The changes of FWI ratio （2×CO2/l ×CO2） show that the potential burned areas will increase 20% under scenario B2 and lightly increase under scenario A2 in 2040s. The days of high, very high and extreme fire danger classes will add 5 and 18 d under scenarios A2 and B2, respectively. It suggests adapting the climate change through improving fuel management and enhancing the fighting abilities.

关键词： climate change forest fire danger fire season FWI northeastern China

Site testing campaign for the Large Optical/infrared Telescope of China:general introduction of the Daocheng site

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Research in Astronomy and Astrophysics 2020年第6期20卷 151-161页

作者： Teng-Fei Song yu Liu Jing-Xing Wang Xue-Fei Zhang Shun-Qing Liu ming-yu zhao Xiao-Bo Li Zhan-Chuan Cai Qi-Wu Song Zi-Huang Cao yu Ruan State Key Laboratory of Lunar and Planetary Science Macao University of Science and TechnologyMacaoChina yunnan Observatories Chinese Academy of SciencesKunming 650216China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Army Engineering University of PLA Chongqing 400042China

The Daocheng site is one of the three candidate sites for the Large Optical/infrared Telescope(LOT)of *** was discovered by yunnan Observatories during the survey of potential sites for the next-generation large-aperture solar telescopes of *** paper describes the overview of the site,the observation platform and the monitor *** addition,simple statistical results are presented(from November,2016 up to December,2017).Detailed data results can refer to the overview of LOT site testing and data analysis articles,which were published during the same period.

关键词： site testing LOT Daocheng site observation platform