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Lithiated Graphdiyne Quantum Dots for Stable Lithium Metal Anodes

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CCS Chemistry 2024年第5期6卷 1300-1311页

作者： Han Shen congying song Fan Wang Guoxing Li Yuliang Li Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

Here,a facile strategy is proposed for the preparation of lithiated graphdiyne quantum dots(GDY-Li QDs)with conjugated sp-and sp2-hybridized carbons by the self-assembly technique ofπ–πstacking of lithiated hexaethynylbezene under mild *** as-prepared GDY-Li QDs,containing stacked multialkynyl aromatic backbone and abundant lithium(Li),show an average diameter of about 2.6 nm and good dispersion in the *** distinctive structures endow GDY-Li QDs with superior properties that cannot be matched by traditional QDs,such as strong ion adsorption,Li-ion self-concentration,high Li-ion conductivity,the nanoconfinement effect,and ion solvation *** from these features,GDY-Li QDs can stabilize Limetal anodes to effectively suppress Li-dendrite growth and significantly improve its Li plating/stripping coulombic efficiency(99.3%in the carbonate electrolyte).The full cells with GDY-Li QDs protected Li-metal anodes,and LiNi_(0.8)Co_(0.1)Mn^(0.1)O_(2)cathodes delivered high capacity and excellent cycling stability at high rates,which demonstrates the great potential of GDY-Li QDs for application in fast-charging Li-metal batteries.

关键词： graphdiyne quantum dots lithiation lithium metal anodes ion distribution

Isolated superior mesenteric artery rupture caused by abdominal trauma

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第12期23卷 1065-1068页

作者： Ping WANG congying song Yuanqiang LU Department of Emergency Medicine the First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003China The Key Laboratory for Diagnosis and Treatment of Aging and Physicochemical Injury Diseases of Zhejiang Province Hangzhou 310003China

The superior mesenteric artery(SMA)is one of the visceral branches of the abdominal *** has multiple branches to supply blood and nutrition to the intestinal segment,and these form an anastomosis with each *** injuries are usually classified as major visceral artery injuries,and have an incidence of<1%.The clinical manifestations of patients with SMA injuries include intra-abdominal bleeding and peritoneal *** compromised blood supply can lead to intestinal ischemia and *** injuries are often not diagnosed in time and have significant mortality rates of 25%-68%due to the lack of specific features(Maithel et al.,2020).Not only that,but patients with less severe trauma or no visible damage on initial examination may still have clinically significant intra-abdominal injuries(Nishijima et al.,2012).Emergency departments often encounter multiple cases that require urgent diagnosis and treatment(Li et al.,2021;Zhang et al.,2021;Zhou et al.,2021),and therefore,it is imperative to diagnose and manage these rare injuries expeditiously.

关键词： trauma rupture diagnosis

Development and validation of a predictive nomogram for sarcopenia among older people in China

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Chinese Medical Journal 2023年第6期136卷 752-754页

作者： Yichen Yang congying song Qin Zhang Caihong He Yunmei Yang Yuanqiang Lu Department of Geriatric and Emergency Medicine The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310003China Key Laboratory of Diagnosis and Treatment of Aging and Physic-Chemical Injury Diseases of Zhejiang Province The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310003China

To the Editor:Sarcopenia is defined as age-related loss of skeletal musclemass and strength,with an incidence of5%to 13%in persons aged>60 years.[1]Sarcopenia is considered a major contributor of frailty in the elderly,and frailty is reported to be associated withpoor outcomes of older *** can also increase the risk of falls and fractures.

关键词： skeletal elderly incidence

Uncovering the potential pathological mechanism of acute pancreatitis in patients with COVID-19 by bioinformatics methods

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World Journal of Emergency Medicine 2023年第5期14卷 397-401页

作者： Zhaodi Wang Ping Wang Xuan Lu congying song Shuai Jiang Li Li Yuanqiang Lu Department of Nursing the First Affi liated Hospital of Zhejiang University School of MedicineHangzhou 310003China Department of Geriatric and Emergency medicine the First Affi liated Hospital of Zhejiang University School of MedicineHangzhou 310003China Key Laboratory for Diagnosis and Treatment of Aging and Physic-chemical Injury Diseases of Zhejiang Province Hangzhou 310003China

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has posed a serious challenge to emergency departments that usually encounter emergencies and severe diseases.[1-5]Angiotensin-converting enzyme 2(ACE2),a protein that interacts with the viral spike protein(s),allows SARS-CoV-2 to penetrate epithelial cells.[6]There is mounting evidence that suggests that the digestive system may also be affected.[7]An observational study described potential patterns of pancreatic injury(elevated amylase and lipase)in patients with coronavirus disease 2019(COVID-19).[8]Additionally,sporadic case reports have described secondary pancreatitis in patients with SARS-CoV-2 infection and presented imaging evidence.[9]Moreover,a previous study showed that COVID-19 patients not only have a higher risk of developing acute pancreatitis(AP),but also have a significantly higher mortality than those without COVID-19.[10]Using bioinformatics analysis,it may be possible to reveal how COVID-19 and AP are *** this study,two RNA-seq datasets of SARS-CoV-2 and AP were selected for analysis.

关键词： patients pancreatitis acute

Graphdiyne:A Versatile Material in Electrochemical Energy Conversion and Storage

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Chemical Research in Chinese Universities 2021年第6期37卷 1224-1241页

作者： song congying LI Guoxing Science Center for Material Creation and Energy Conversion Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao266237P.R.China

Graphdiyne(GDY),which is composed of sp^(2)-/sp-hybridized carbon atoms,has attracted increasing *** the structure of GDY,the existence of large triangular-like pores,well dispersed electron-rich cavities as well as a largeπ-conjugated structure endows GDY with a natural bandgap,fast electron/ion transport,and tunable electronic *** unique features make GDY competitive in areas of gas separation and capture,electronics,detectors,catalysts,biomedicine and therapy,and energy-related *** from the facile synthesis method,various GDY structures and GDY-based composites have been successfully prepared and show great potential in the practical application of energy storage and catalysis ***,this review aims at providing a timely and comprehensive update on the preparation and application of GDY *** current development of GDY materials in various electrochemical fields especially in energy conversion,energy storage,and catalysis is mainly ***,the potential development prospects are also discussed.

关键词： Graphdiyne Electrochemical energy Catalysis Rechargeable battery Carbon material

Uniformly grown PtCo-modified C03O4 nanosheets as a highly efficient catalyst for sodium borohydride electrooxidation

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Nano Research 2016年第11期9卷 3322-3333页

作者： congying song Dongming Zhang Bin Wang Zhuang Cai Peng Yan Yang Sun Ke Ye Dianxue Cao Kui Cheng Guiling Wang College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology North University of China Taiyuan 030051 China

A facile hydrothermal synthetic method, followed by in situ reduction and galvanic replacement processes, is used to prepare PtCo-modified Co304 nanosheets （PtCo/C0304 NSs） supported on Ni foam. The prepared nanomaterial is used as an electrocatalyst for NaBH4 oxidation in alkaline solution. The morphology and phase composition of PtCo/C0304 NSs are characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD）, and X-ray photoelectron spectroscopy （XPS）. The catalytic performance of PtCo/Co3O4 NSs is investigated by cyclic voltammetry （CV） and chronoamperometry （CA） in a standard three-electrode system. Current densities of 70 and 850 mA·cm^-2 were obtained at -0.4 V for Co/Co3O4 and PtCo/Co3O4 NSs, respectively, in a solution containing 2 mol·L^-1 NaOH and 0.2 mol·L^-1 NaBH4. The use of a noble metal （Pt） greatly enhances the catalytic activity of the transition metal （Co） and Co3O4. Besides, both Co and Co3O4 exhibit good B-H bond breaking ability （in NaBH4）, which leads to better electrocatalytic activity and stability of PtCo/Co3O4 NSs in NaBH4 electrooxidation compared to pure Pt. The results demonstrate that the as-prepared PtCo/Co3O4 NSs can be a promising electrocatalyst for borohydride oxidation.

关键词： PtCo/Co3O4 nanosheets in situ reduction galvanic replacement borohydride electrooxidation

A new catalyst for urea oxidation: NiCo2S4 nanowires modified 3D carbon sponge

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Journal of Energy Chemistry 2020年第11期29卷 195-205页

作者： Biaopeng Li congying song Jianjun Rong Jing Zhao Hong-En Wang Ping Yang Ke Ye Kui Cheng Kai Zhu Jun Yan Dianxue Cao Guiling Wang Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Urea oxidation is a significant reaction for utilizing urea-rich wastewater or human urine as sustainable power sources which can ease the water eutrophication while generate electricity. A direct urea-hydrogen peroxide fuel cell is a new kind of fuel cell employing urea as fuel and hydrogen peroxide as oxidant which possesses a larger cell voltage. Herein, this work tries to promote the kinetics process of urea oxidation by preparing low-cost and high-efficient NiCo2S4 nanowires modified carbon sponge electrode. The carbon sponge used in this work with a similar three-dimensional multi-channel structure to Ni foam, is prepared by carbonizing recycled polyurethane sponge which is also a process of recycling waste. The performance of the prepared catalyst in an alkaline solution is investigated in a three-electrode *** the introduction of Co element to the catalyst, a reduced initial urea oxidation potential and a high performance are obtained. Furthermore, a direct urea-hydrogen peroxide fuel cell is assembled using the NiCo2S4 nanowires modified carbon sponge anode. Results indicate that the prepared catalyst provides a chance to solve the current problems that hinder the development of urea electrooxidation(high initial urea oxidation potential, low performance, and high electrode costs).

关键词： Carbon sponge Direct urea fuel cell Electrocatalyst NiCo2S4 nanowires Urea oxidation

The Persistence and Zonal Scale of Atmospheric Dipolar Modes

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Advances in Atmospheric Sciences 2024年第3期41卷 478-492页

作者： Jie song State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric Physics(IAP)Chinese Academy of SciencesBeijing 100029China

This study investigates the relationship between the persistence and the zonal scale of atmospheric dipolar modes(DMs). Results from the daily data of ERA5 and the long-term output of an idealized atmospheric model show that the atmospheric DMs with a broader(narrower) zonal scale dipolar structure possess a longer(shorter) persistence. A detailed vorticity budget analysis indicates that the persistence of a hemispheric-scale DM(1/1 DM) and a regional or sectoral DM(1/8 DM) in the model both largely rely on the persistence of the nonlinear eddy forcing. Linear terms can indirectly reduce the persistence of the anomalous nonlinear eddy forcing in a 1/8 DM by modifying the baroclinicity via the arousal of anomalous vertical motions. Therefore, the atmospheric DMs with a broader(narrower) zonal scale possess a longer(shorter) persistence because the effects of the linear terms are less(more) pronounced when the atmospheric DMs have better(worse) zonal symmetry. Further analyses show that the positive eddy feedback effect is weak or even absent in a 1/8DM and the high-frequency eddy forcing acts more like a concomitant phenomenon rather than a leading driving factor for a 1/8 DM. Thus, the hemispheric-scale DM and the regional or sectoral DMs are different, not only in their persistence but also in their dynamics.

关键词： NAM NAO eddy feedback persistence linear term

Identification of Linear Systems Using Binary Sensors with Random Thresholds

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Journal of Systems Science & Complexity 2024年第3期37卷 907-923页

作者： HUANG Zhiyong song Qijiang School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematics Sino-French InstituteRenmin University of ChinaBeijing 100872China

In this paper,the problem of identifying autoregressive-moving-average systems under random threshold binary-valued output measurements is *** the help of stochastic approximation algorithms with expanding truncations,the authors give the recursive estimates for the parameters of both the linear system and the binary *** reasonable conditions,all constructed estimates are proved to be convergent to the true values with probability one,and the convergence rates are also established.A simulation example is provided to justify the theoretical results.

关键词： α-mixing binary sensor quantized system stochastic approximation stochastic thresh-old strongly consistent system identification