检索结果-南通市图书馆

Synergy effect of regulated Li-plating and functional solid electrolyte interphase on graphite anodes

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8077-8085页

作者： panpan wang Baojia Xia Jianling Li State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 201800China

The growth of Li dendrites poses potential safety hazard to lithium-ion batteries(LIBs),and eliminating Li dendrites thoroughly stills face tough difficulties ***,regulating Li-plating is a critical optimization-direction to address the ***,a“graphite-Li hybrid”anode with high reversibility is realized under the constant-capacity lithiation(CCL).Within CCL,the uniform distribution of Li-plating on the graphite surface is successfully *** evolution in different states of solid electrolyte interphase(SEI)is investigated in detail to study the interaction between the potentials and impedance during the process of Liintercalation and *** the potential below 0 V and the state of charge(SOC)of 110%relative to the theoretical capacity,the F-rich SEI with high stability is constructed to hinder the emergency of Li dendrites and maintain the intact structure of graphite anode under long *** cell presents more than 100%Coulombic efficiency(CE)with the 900 cycles,demonstrating the reversible Li-plating and the utilization of *** the CCL half-cell provides a good cycling performance and specific capacity of 900 cycles at 0.5 C,it is attributed to the synergy effect of stable inorganic-rich SEI and regulated active Li-plating.

关键词： "graphite-Li hybrid"anode Li-plating reversibility solid electrolyte interphase(SEI)

On BiHom-L-R Smash Products

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Algebra Colloquium 2023年第2期30卷 245-262页

作者： Jiafeng Lu panpan wang Ling Liu Department of Mathematics Zhejiang Normal University JinhuaZhejiang 321004China

Let(H,αH,βH,ψH,ωH,SH)be a BiHom-Hopf algebra and(A,αA,βA)be an(H,αH,βH,ψH,ωH)-BiHom-bimodule algebra,where the mapsαH,βH,ψH,ωH,αA,βA are *** first prove the Maschke-type theorem for the BiHom-L-R smash product over a finite-dimensional semisimple BiHom-Hopf *** we give a Morita context between the BiHom-subalgebra A^(biH)and the BiHom-L-R smash product A#H.

关键词： BiHom-bimodule algebra BiHom-L-R smash product Maschke-type theorem Morita context

Role of Microalloyed Y and Gd in Improving the Corrosion Resistance of Rolled Mg-3Al-1Zn Alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2022年第6期35卷 941-947页

作者： panpan wang Haitao Jiang Yujiao wang Yun Zhang Jingchao Tao Shanghai Key Laboratory of Materials Laser Processing and Modification and National Engineering Research Center of Light Alloy Net FormingSchool of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Institute of Engineering Technology University of Science and TechnologyBeijingBeijing 100083China

The corrosion performances of rolled AZ31 alloy with addition of Y and Gd were comparatively investigated. The corrosion rates of AZ31 alloy modified with Y and Gd were 3.3 and 3.7 mm/y immersing for 24 h in 3.5 wt% NaCl solution, respectively, which were much lower than that of AZ31 alloy(23.6 mm/y). The remarkable improvement in corrosion performance by adding Y or Gd was ascribed to preferentially form less noble Al_(2)Y or Al_(6)GdMn_(6) and more protective corrosion product layer, resulting in the reduction in H_(2) evolution rate and the enhancement of passivity.

关键词： AZ31 alloy Second phases Volta potential diff erence Y Gd

Broken Rotor Bar Fault Detection of Induction Motors Using a Joint Algorithm of Trust Region and Modified Bare-bones Particle Swarm Optimization

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2019年第1期32卷 65-78页

作者： panpan wang Liping Shi Yong Zhang Yifan wang Li Han School of Electrical and Power Engineering China University of Mining & Technology

A precise detection of the fault feature parameter of motor current is a new research hotspot in the broken rotor bar(BRB) fault diagnosis of induction motors. Discrete Fourier transform(DFT) is the most popular technique in this field, owing to low computation and easy realization. However, its accuracy is often limited by the data window length, spectral leakage, fence e ect, etc. Therefore, a new detection method based on a global optimization algorithm is proposed. First, a BRB fault current model and a residual error function are designed to transform the fault parameter detection problem into a nonlinear least-square problem. Because this optimization problem has a great number of local optima and needs to be resolved rapidly and accurately, a joint algorithm(called TR-MBPSO) based on a modified bare-bones particle swarm optimization(BPSO) and trust region(TR) is subsequently proposed. In the TR-MBPSO, a reinitialization strategy of inactive particle is introduced to the BPSO to enhance the swarm diversity and global search ability. Meanwhile, the TR is combined with the modified BPSO to improve convergence speed and accuracy. It also includes a global convergence analysis, whose result proves that the TR-MBPSO can converge to the global optimum with the probability of 1. Both simulations and experiments are conducted, and the results indicate that the proposed detection method not only has high accuracy of parameter estimation with short-time data window, e.g., the magnitude and frequency precision of the fault-related components reaches 10^(-4), but also overcomes the impacts of spectral leakage and non-integer-period sampling. The proposed research provides a new BRB detection method, which has enough precision to extract the parameters of the fault feature components.

关键词： Fault detection Broken rotor bars Induction motors Bare-bones particle swarm optimization Trust region

Flexible aqueous Ca-ion full battery with super-flat discharge voltage plateau

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第1期15卷 701-708页

作者： panpan wang Hua wang Zhe Chen Junwei Wu Jingting Luo Yan Huang School of Materials Science and Engineering Shenzhen UniversityShenzhen 518055China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyShenzhen 518055China Flexible Printed Electronic Technology Center Harbin Institute of TechnologyShenzhen 518055China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518055China

Recently,multivalent metal-ion batteries have attracted considerable interests on the merits of their natural abundance and multielectron redox ***,the development of Ca-ion battery is still in their preliminary stage because of the lack of suitable electrode *** Ca-storage performance of the existing materials is still unsatisfactory with low capacity,poor cyclic stability,as well as sloping discharge profiles,which cannot provide stable energy *** this work,transition metal oxide Sn-doped In2O3(ITO)has been explored as the aqueous Ca-ion battery anode,which could deliver a high discharge capacity of 71.2 mAh·g^(-1) with an ultra-flat discharge voltage *** Ca storage mechanism was revealed to be reversible conversion reaction based on ex-situ X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and transmission electron microscopy(TEM)characterizations.A flexible aqueous Ca-ion battery was subsequently assembled with zinc hexacyanoferrate(ZnHCF)cathode and ITO anode sandwiched by hydrogel electrolyte,which could deliver a high specific capacity of 75.3 mAh·g^(-1) at 0.4 A·g^(-1) with a flat output voltage plateau at around 0.8 *** bendable and flexible Ca-ion battery with decent voltage output will pave the way for the energy storage devices towards practical applications in flexible and wearable electronics.

关键词： multivalent metal ion battery aqueous Ca-ion battery voltage plateau ln2O3(ITO) flexible and wearable

Role of trace additions of Ca and Sn in improving the corrosion resistance of Mg-3Al-1Zn alloy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2022年第8期29卷 1559-1569页

作者： panpan wang Haitao Jiang Yujiao wang Yun Zhang Shiwei Tian Yefei Zhang Zhiming Cao Institute of Engineering Technology University of Science and Technology BeijingBeijing 100086China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The limited wide applicability of commercial Mg alloys is mainly attributed to the poor corrosion *** of alloying elements is the simplest and effective method to improve the corrosion *** on the low-cost alloy composition design,the corro-sion behavior of commercial Mg-3Al-1Zn(AZ31)alloy bearing minor Ca or Sn element was characterized by scanning Kelvin probe force microscopy,hydrogen evolution,electrochemical measurements,and corrosion morphology *** revealed that the potential differ-ence of Al_(2)Ca/α-Mg and Mg_(2)Sn/α-Mg was(230±19)mV and(80±6)mV,respectively,much lower than that of Al_(8)Mn_(5)/α-Mg(430±31)mV in AZ31 alloy,which illustrated that AZ31-0.2Sn alloy performed the best corrosion resistance,followed by AZ31-0.2Ca,while AZ31 al-loy exhibited the worst corrosion ***,Sn dissolved into matrix obviously increased the potential ofα-Mg and participated in the formation of dense SnO_(2) film at the interface of matrix,while Ca element was enriched in the corrosion product layer,resulting in the cor-rosion product layer of AZ31-0.2Ca/Sn alloys more compact,stable,and protective than AZ31 ***,AZ31 alloy bearing 0.2wt%Ca or Sn element exhibited excellent balanced properties,which is potential to be applied in commercial more comprehensively.

关键词： AZ31 Mg alloy micro-galvanic corrosion alloying addition Volta potential precipitates

High?Voltage Flexible Aqueous Zn?Ion Battery with Extremely Low Dropout Voltage and Super?Flat Platform

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2020年第6期12卷 126-137页

作者： Zhe Chen panpan wang Zhenyuan Ji Hua wang Jie Liu Jiaqi wang Mengmeng Hu Yan Huang State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyShenzhen 518055People’s Republic of China Flexible Printed Electronic Technology Center Harbin Institute of TechnologyShenzhen 518055People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055People’s Republic of China

Flexible rechargeable aqueous zinc-ion batteries(ZIBs)have attracted extensive attentions in the energy storage field due to their high safety,environmental friendliness,and outstanding electrochemical performance while the exploration of high-voltage aqueous ZIBs with excellent rate capability is still a great challenge for the further application them in flexible and wearable ***,we fabricated a 2.4 V high-voltage flexible aqueous ZIB,being among the highest voltage reported in aqueous ***,it exhibits extremely flat charging/discharging voltage platforms and the dropout voltage is only 0.1 V,which is the smallest gap in all aqueous batteries to our best ***,the prepared ZIB performs high rate capability of 25 C and energy density of 120 Wh kg?1 and exhibits excellent safety under various destructive conditions including hammering,sewing,punching,and *** extraordinary results indicate the great application potential of our high-voltage flexible aqueous ZIB in wearable electronics.

关键词： Flexible Aqueous zinc-ion battery High voltage Flat platform Rate capability

Bibliometric analysis of global scientific research on COVID-19

在线全文

学校读者我要写书评

暂无评论

Journal of Biosafety and Biosecurity 2021年第1期3卷 4-9页

作者： panpan wang Deqiao Tian Beijing Institute of Biotechnology Beijing 100071China

Since the outbreak of coronavirus disease 2019(COVID-19),a large number of COVID-19-related reports have been published in journals or submitted to preprint *** this study,we search the COVID-19-related literature officially published and included in the Web of Science(WOS)database or submitted to four preprint platforms:bioRxiv,medRxiv,Preprints,and *** data on the number of reports,author institution,country,and research category,we analyze global trends in COVID-19 research,including institution distribution and research *** results show that a large number of COVID-19-related reports have been produced;the United States has contributed the most published literature,followed by *** United States has published the most reports included in the WOS in the categories of non-pharmaceutical interventions,treatment,and vaccine-related reports,while China has published the most literature in the categories of clinical features and complications,virology and immunology,epidemiology,and detection and *** countries are concentrated in Asia,North America,and Europe,while South America and Africa have less *** conclusion,many scientific research issues related to COVID-19 need to be further clarified and COVID-19 research urgently needs global cooperation.

关键词： COVID-19 Bibliometric Web of Science Preprint

Drugging IGF-1R in cancer: New insights and emerging opportunities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2023年第1期10卷 199-211页

作者： panpan wang Victor CY.Mak Lydia WT.Cheung School of Biomedical Sciences Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong SARChina

The insulin-like growth factor(IGF)axis plays important roles in cancer development and *** type 1 IGF receptor(IGF-1R)is a key member in the IGF axis and has long been recognized for its oncogenic role in multiple cancer *** we review the occurrence of IGF-1R aberrations and activation mechanisms in cancers,which justify the development of anti-IGF-1R *** describe the therapeutic agents available for IGF-1R inhibition,with focuses on the recent or ongoing pre-clinical and clinical *** include antisense oligonucleotide,tyrosine kinase inhibitors and monoclonal antibodies which may be conjugated with cytotoxic ***,simultaneous targeting of IGF-1R and several other oncogenic vulnerabilities has shown early promise,highlighting the potential benefits of combination ***,we discuss the challenges in targeting IGF-1R so far and new concepts to improve therapeutic efficacy such as blockage of the nuclear translocationofIGF-1R.

关键词： Cancer IGF-1R Targeted therapy Metastasis Combination therapy