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Three-in-one fire-retardant poly(phosphate)-based fast ion-conductor for all-solid-state lithium batteries

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Journal of Energy Chemistry 2023年第5期80卷 324-334,I0008页

作者： Jiaying Xie Sibo qiao Yuyang Wang Jiefei Sui Lixia bao He Zhou Tianshi Li Jiliang Wang School of Chemical Science and Technology National Demonstration Center for Experimental Chemistry and Chemical Engineering EducationYunnan UniversityKunming 650091YunnanChina

The development of flame retardant or nonflammable electrolytes is the key to improve the safety of lithium batteries,owing to inflammable organic solvents and polymer matrix in common liquid and polymer electrolytes regarded as the main cause of battery ***,a series of solid-state polyphosphate oligomers(SPPO)as a three-in-one electrolyte that integrated the roles of lithium salt,dissociation matrix,and flame retardant were *** well-designed SPPO electrolytes showed an optimal ionic conductivity of 5.5×10^(-4)S cm-1at 30℃,an acceptable electrochemical window up to 4.0 V ***/Li+,and lithium ion transference number of *** Li-ion stripping/plating behavior for 500 h of charge-discharge cycles without internal short-circuit in a Li|SPPO|Li cell was confirmed,together with outstanding interface compatibility between the SPPO electrolyte and lithium *** optimal Li|SPPO|LiFePO4cell presented good reversible discharge capacity of 149.4 mA h g-1at 0.1 C and Coulombic efficiency of 96.4%after 120 *** importantly,the prepared SPPO cannot be ignited by the lighter fire and show a limited-oxygen-index value as high as 35.5%,indicating splendid nonflammable *** SPPO could be a promising candidate as a three-in-one solid-state electrolyte for the improved safety of rechargeable lithium batteries.

关键词： Three-in-one Poly(phosphate) Organic fast ion-conductor Solid-state polymer electrolyte Flame-retardant Secondary lithium batteries

Nonlocal advantage of quantum coherence and entanglement of two spins under intrinsic decoherence

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Chinese Physics B 2021年第7期30卷 33-38页

作者： bao-Min Li Ming-liang Hu Heng Fan Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

We investigate the nonlocal advantage of quantum coherence(NAQC)and entanglement for two spins coupled via the Heisenberg interaction and under the intrinsic *** of this decoherence model for the initial spin-1/2 and spin-1 maximally entangled states are obtained,based on which we calculate the NAQC and *** the weak region of magnetic field,the NAQC behaves as a damped oscillation with the time evolves,while the entanglement decays exponentially(behaves as a damped oscillation)for the spin-1/2(spin-1)***,the decay of both the NAQC and entanglement can be suppressed significantly by tuning the magnetic field and anisotropy of the spin interaction to some decoherence-rate-determined optimal values.

关键词： quantum coherence quantum entanglement intrinsic decoherence

Angiofibrolipoma of the spermatic cord

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Asian Journal of Andrology 2009年第6期11卷 746-747页

作者： Qing-Li Liu bao Tian Hui Zhang De-Shan qiao Department of Urology The First Hospital of Qinhuangdao Qinhuangdao 066000 China Department of Pathology The First Hospital of Qinhuangdao Qinhuangdao 066000 China

Dear Sir, I am Dr Qing-Li Liu, from the Department of Urology of the First Hospital of Qinhuangdao in Qinhuangdao, Hebei Province, China. I write to present a case report of spermatic cord angiofibrolipoma.

关键词： Angiofibrolipoma spermatic cord

Surface Passivation and Energetic Modification Suppress Nonradiative Recombination in Perovskite Solar Cells

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Nano-Micro Letters 2022年第7期14卷 32-42页

作者： Wei Dong Wencheng qiao Shaobing Xiong Jianming Yang Xuelu Wang Liming Ding Yefeng Yao Qinye bao Shanghai Key Laboratory of Magnetic Resonance East China Normal UniversityShanghai 200241People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006ShanxiPeople’s Republic of China

Surface passivation via post-treatment is an important strategy for improving power conversion efficiency and operational stability of perovskite solar ***,so far the interaction mechanisms between passivating additive and perovskite are not well ***,we report the atomic-scale interaction of surface passivating additive 2,2-difluoroethylammonium bromine(2FEABr)on the MAPbI_(3).It is found that the bulky 2FEA+cations tend to distribute at film surface,while the Br−anions diffuse from surface into bulk.A combination of 19F,207Pb,and 2H solid-state NMR further reveal the Br−anions’partial substitution for the I−sites,the restricted motion of partial MA+cations,and the firmed perovskite lattices,which would improve charge transport and stability of the perovskite *** spectroscopy and ultraviolet photoelectron spectroscopy demonstrate that the 2FEABr induced surface passivation and energetic modification suppress the nonradiative recombination *** findings enable the efficiency of the p-i-n structured PSC significantly increasing from 19.44 to 21.06%,accompanied by excellent *** work further establishes more knowledge link between passivating additive and PSC performance.

关键词： Passivation Solid-state NMR Charge transport Perovskite solar cell

Epithelial-mesenchymal transition contributes to malignant phenotypes of circulating tumor cells derived from gastric cancer

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BIOCELL 2019年第4期43卷 293-298页

作者： TIANGEN WU TIANHAO bao DAOMING liang LIN WANG Department of Gastrointestinal Surgery the Second Affiliated Hospital of Kunming Medical UniversityKunming650101China Biomedical Engineering University of AlbertaEdmontonAlbertaCanada Mental Health Center of Kunming Medical University Kunming650224China Department of Hepatobiliary Surgery the Second Affiliated Hospital of Kunming Medical UniversityKunming650101China

Circulating tumor cells(CTCs)are crucial to tumor metastasis,and they usually undergo epithelial-mesenchymal transition(EMT)in order to disseminate from the primary ***,very little is currently known about the relationship between EMT and malignant phenotypes of CTCs in the context of gastric ***,this study aimed to investigate the contribution of EMT to malignant phenotypes of CTCs derived from gastric cancer *** xenografted MKN28 gastric cancer cells pretreated with transforming growth factor-beta 1(TGFβ-1)into nude mice by intravenous ***,we isolated CTCs from the blood of nude mice by gradient centrifugation and found that CTCs derived from MKN28 cells pretreated with TGFβ-1 had a significantly increased viability and invasion ability compared to MKN28 cells without TGFβ-1 *** staining showed lower expression of E-cadherin and higher expression of N-cadherin,vimentin,and β-catenin in CTCs derived from MKN28 cells pretreated with TGFβ-***,the expression of Wnt3a,β-catenin,cyclin D1,and c-Myc was significantly higher in CTCs derived from MKN28 cells pretreated with TGFβ-*** together,these findings suggest that TGFβ promotes EMT and malignant phenotypes of gastric cancer ***,the malignant phenotypes of gastric cancer cells induced by TGFβ are maintained in CTCs derived from these *** EMT in CTCs is a new approach to the treatment of gastric cancer relapse and metastasis.

关键词： Circulating tumor cells Epithelial-mesenchymal transition Gastric cancer

Failure analysis of a field brittle fracture composite insulator:characterisation by Xray photoelectron spectroscopy analysis

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High Voltage 2019年第2期4卷 89-96页

作者： Yanfeng Gao Xidong liang Weining bao Chao Wu Shaohua Li State Grid Jibei Electric Power Co.Ltd.Research Institute North China Electric Power Research Institute Co.LtdBeijing100045People's Republic of China Department of Electrical Engineering State Key Lab of Power SystemTsinghua UniversityBeijing100084People's Republic of China Department of Electrical and Computer Engineering University of ConnecticutStorrsConnecticut06269USA

In the present work,a field brittle fracture composite insulator was collected and examined with the purpose of obtaining a better understanding of the failure ***,the macroscopic and microscopic fractography of this fractured composite insulator was observed confirming that the classical brittle fracture morphology features appeared in this field failed composite ***,the X-ray photoelectron spectroscopy(XPS)analysis was performed on the fracture surface of the glass-fibre-reinforced polymer *** examining the XPS survey spectra and high-resolution XPS spectra for nitrogen,sulphur,silicon,calcium,aluminium,boron and carbon elements,the type of the glass fibre and the acid source responsible for this brittle fracture composite insulator were ***,the oxidation of the silicate network of glass fibre at the fracture surface was first observed,meanwhile,the oxidation of the epoxy resin matrix was also *** leaching of non-silicate constituents leading to a high-silica glass fibre was also observed;moreover,in comparison with the calcium and aluminium elements,the boron element resides in the silicate network was more preferential to be *** present work provides an insight into the brittle fracture in high voltage composite insulator from chemical properties point of view.

关键词： fracture composite insulator

应对供应中断风险下消费者恐慌囤货行为:涨价策略与限购策略

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管理工程学报 2025年第2期39卷 118-129页

作者：郑锐王宇鲍丽娜武汉理工大学安全科学与应急管理学院湖北武汉430070 武汉理工大学中国应急管理研究中心湖北武汉430070 浙江大学管理学院浙江杭州310058

本文研究了零售商应对供应中断风险下消费者恐慌囤货行为的涨价策略与限购策略。研究模型考虑一个垄断零售商在两个订货周期内向市场销售一种生活必需品,第二期的供应中断风险可能导致消费者在第一期发生恐慌囤货。研究基于对消费者恐... 详细信息

本文研究了零售商应对供应中断风险下消费者恐慌囤货行为的涨价策略与限购策略。研究模型考虑一个垄断零售商在两个订货周期内向市场销售一种生活必需品,第二期的供应中断风险可能导致消费者在第一期发生恐慌囤货。研究基于对消费者恐慌囤货决策模型的刻画,分析了消费者恐慌囤货行为如何影响零售商利润以及社会总福利,然后进一步分析了零售商分别在什么条件下应采取涨价策略或限购策略以及这些策略将如何影响社会总福利。研究结果表明:(1)当零售商拥有足够的库存时,一定程度的恐慌囤货可以增加零售商利润和社会总福利;而当恐慌囤货导致零售商严重缺货时,恐慌囤货将损害零售商利润和社会总福利。(2)当零售商需要采取策略应对消费者恐慌囤货行为时,存在一个消费者恐慌强度的阈值,当恐慌强度低于阈值时,零售商应采取涨价策略调节消费者的囤货需求;当恐慌强度高于阈值时,零售商应采取限购策略限制消费者的囤货。(3)零售商不同的应对策略对社会总福利有不同的影响,当恐慌强度非常高时,采取限购策略可以显著改善社会总福利;采取涨价策略可以提高零售商的备货动机,在一定条件下可以改善社会总福利。

关键词：供应链管理供应中断风险恐慌囤货需求管理限购策略

Obstacle Effects on One-Dimensional Translocation of ATPase

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Communications in Theoretical Physics 2002年第7期38卷 121-124页

作者： WANG Xian-Ju AI bao-Quan LIU liang-Gang Department of Physics Zhongshan University Guangzhou 510275 China Department of Physics Zhongshan University Guangzhou 510275 China Department of Physics Zhongshan University Guangzhou 510275 China

We apply a general random walk model to the study of the ATPase's one-dimensional translocation along obstacle biological environment, and show the effects of random obstacles on the ATPase translocation along single stranded DNA. We find that the obstacle environment can reduce the lifetime of ATPase lattice-bound state which results in the inhibition of ATPase activity. We also carry out the ranges of rate constant of ATPase unidirectonal translocation and bidirectional translocation. Our results are consistent with the experiments and relevant theoretical consideration, and can be used to explain some physiological phenomena.

关键词： random walk, average statistical time, obstacle

Microstructure and Mechanical Properties of Tortoise Carapace Structure Bio-Inspired Hybrid Composite

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Acta Metallurgica Sinica(English Letters) 2018年第9期31卷 945-952页

作者： bao-Shuai Han Yan-Jin Xu En-Yu Guo Tao Jing Hong-liang Hou liang-Shun Luo AVIC Manufacturing Technology Institute BeijingBeijing 100024China School of Materials Science and Engineering HarbinInstitute of TechnologyHarbin 150001China School of Materials Science and Engineering DalianUniversity of TechnologyDalian 116024China School of Materials Science and Engineering TsinghuaUniversityBeijing 100084China

A turtle carapace bio-inspired Ti matrix hybrid composite was successfully fabricated in this work. This composite incorporates two parts： the Ti-Al intermetallic multilayered composite and continuous SiC fibers-reinforced Ti matrix composite. In the Ti-Al intermetallic multilayered composite part, a series of Ti-Al intermetallics compounds, including Ti3Al, TiAl, TiAl2 and TiAl3, were formed between the Ti layers. In the continuous SiC fibers-reinforced Ti matrix composite part, SiC fibers and Ti matrix were found to be bonded well through weak interface reaction. Flexural strength of this material reached 1.21 ±0.16 GPa, measured by three-point bending test. The deformation features suggest that the hierarchical structure combining ductile Ti layers/matrix with brittle high-strength Ti-Al intermetallics layers/SiC fibers can effectively enhance the mechanical properties of the bio-inspired hybrid composite.

关键词： Bio-inspired composite Hierarchical structure Cracks propagation Flexural property