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Ni/Co bimetallic organic frameworks nanospheres for highperformance electrochemical energy storage

Nano Research 2024年第6期17卷 5122-5130页

作者： Jianru Guan Minlu liu Limin Zhu Jiamei Wang Qing Han Xiaoxia Yang Weibo Hua Lingling Xie Xiaoyu Cao School of Chemistry and Chemical Engineering Key Laboratory of High Specific Energy Materials for Electrochemical Power Sources of Zhengzhou CityHenan University of TechnologyZhengzhou 450001China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China

In addition to their many well-known advantages(e.g.,ultra-high porosity,good pore size distribution,easy functionalization,and structural tolerability),metal-organic frameworks(MOFs)are a new class of advanced functional ***,their backbones are highly susceptible to deformation after exposure to acidic or alkaline *** a result of lithium-ion batteries embedding or detaching directly from MOFs,they irreversibly *** a result,they fail to maintain their electrochemical *** factors have hindered the development of MOFs as direct electrode materials,making the design of MOF materials with controlled morphology and stable dimensions a new *** this study,we adopted a versatile and effective method to synthesize a novel MOF material(NiCo-BP(BP=BTC/phen and BTC=1,3,5-benzenetricarboxylic acid))using the rigid ligands 1,10-phenanthroline and homobenzotrizoic acid,and the emergence of the Ni-O/N and Co-O/N coordination layers was observed by extended X-ray absorption fine structure(EXAFS)tests,indicating that Ni and Co were coordinated with heterocyclic N-given atoms to form a stable p-πconjugated ***,the metal-ion is attached to the carboxylic acid ligand on the other side,making the metal-organic skeleton complete and *** nanosphere structure of NiCo-BP(~400 nm)allows for full exposure and utilisation of the active sites,especially the Ni,Co,and phenanthroline units,and exhibit impressively high specific capacity and cycling *** a high current density of 1.0 A·g^(−1),a high discharge specific capacity of 631.6 mAh·g^(−1)was obtained after 1000 *** co-participation of two organic ligands in the coordination is in accordance with the theory of soft and hard acids and bases,which contributes to the ability of the material to maintain a high capacity in cycling as well as its cyclic stability.

关键词： lithium-ion batteries metal organic frame electrochemical energy storage dual ligand hard-soft-acid-base

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Intermolecular Acid-Base-Pairs Containing Poly(p-Terphenyl-co-Isatin Piperidinium) for High Temperature Proton Exchange Membrane Fuel Cells

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Energy & Environmental Materials 2024年第3期7卷 410-418页

作者： Xiaofeng Hao Zhen Li Min Xiao Zhiheng Huang Dongmei Han Sheng Huang Wei liu Shuanjin Wang Yuezhong Meng The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSun Yat-sen University School of Chemical Engineering and Technology Sun Yat-sen University Institute of Chemistry Henan Provincial Academy of Sciences Research Center of Green Catalysts College of ChemistryZhengzhou University

How to optimize and regulate the distribution of phosphoric acid in matrix,and pursuing the improved electrochemical performance and service lifetime of high temperature proton exchange membrane （HT-PEMs） fuel cell are significant ***,bifunctional poly （p-terphenyl-co-isatin piperidinium） copolymer with tethered phosphonic acid （t-PA） and intrinsic tertiary amine base groups are firstly prepared and investigated as *** distinctive architecture of the copolymer provides a well-designed platform for rapid proton *** not only transports through the hydrogen bond network formed by the adsorbed free phosphoric acid （f-PA）anchored by the tertiary amine base groups,but also rely upon the proton channel constructed by the ionic cluster formed by the t-PA *** the design of the structure,the bifunctional copolymers with lower PA uptake level （<100%） display prominent proton conductivities and peak power densities (99 mS cm-1,812 mW cm-2at 160℃),along with lower PA leaching and higher voltage stability,which is a top leading result in disclosed *** results demonstrate that the design of intermolecular acid-base-pairs can improve the proton conductivity without sacrificing the intrinsic chemical stability or mechanical property of the thin membrane,realizing win-win demands between the mechanical robustness and electrochemical properties of HT-PEMs.

关键词： bifunctional copolymer high temperature proton exchange membrane intermolecular acid–base-pairs phosphonic acid retention phosphonic acid uptake level

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Granulomatous mastitis in a 50-year-old male:A case report and review of literature

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World Journal of Clinical Cases 2024年第2期12卷 451-459页

作者： Le-Yin Cui Chen-Ping Sun Yun-Yuan Li Sheng liu Department of Breast Surgery Longhua Hospital Shanghai University of Traditional Chinese MedicineShanghai 200032China Department of Pathology Longhua Hospital Shanghai University of Traditional Chinese MedicineShanghai 200032China Graduate School Shanghai University of Traditional Chinese MedicineShanghai 201203China

BACKGROUND Granulomatous mastitis(GM)an inflammatory disease of the breast that usually affects women of childbearing age,occurs very rarely in *** SUMMARY We present a case study of a 50-year-old male patient with *** patient developed a breast lump following the cleaning of a previously embedded dirtfilled *** an initial improvement was noted with antibiotic therapy,a recurrence occurred a year later,showing resistance to the previously effective ***,the lesion was *** histopathological examination confirmed the diagnosis of *** GM should be considered a possible diagnosis of male breast masses.

关键词： Granulomatous mastitis Male Pathology Differential diagnosis Case report

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The Resilience and Flexibility of Asia-Pacific Regional Economic Cooperation in the Period of Worldwide Turbulent Changes

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Contemporary World 2024年第2期 13-18页

作者： liu Hongzhong Shanghai Academy of Global Governance Shanghai International Studies University

The world today is undergoing a new period of turbulent changes,with the post-war trade and economic system dominated by neo-liberalism facing complex *** political and economic landscape of the Asia-Pacific region also fluctuates from time to time due to various ***while,the willingness of Asia-Pacific countries to promote regional economic cooperation remains strong,as the experience and lessons of"prosperity for all,loss for all"learned over the past few decades of development have convinced countries that continued strengthening of regional cooperation is the only right choice to ensure sustainable economic growth for their own countries.

关键词： landscape strengthening Period

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Insights into treatment for hepatocellular carcinoma with tumor thrombus in the inferior vena cava or right atrium

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Hepatobiliary Surgery and Nutrition 2024年第1期13卷 168-171页

作者： Jia Yang Yongjie Shui Lihong liu Genhua Yu Qichun Wei Department of Radiation Oncology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina The Key Laboratory of Cancer Prevention and Intervention China National Ministry of EducationZhejiang University School of MedicineHangzhouChina

Hepatocellular carcinoma(HCC),one of the most common liver cancers,often has a poor prognosis when it involves macrovascular *** emergencies including pulmonary embolism,heart failure,and even sudden death could happen when it develops a tumor thrombus(TT)in the inferior vena cava(IVC)or right atrium(RA),indicating an exceptionally grim prognosis(1).Although systemic therapy is the only standard treatment recommended by guidelines(2),other treatment modalities are explored including surgery,radiotherapy,*** some ***,as the only potential curative treatment,has been explored in several selected cases.A case of long-term survival of 15 years and cancer-free survival of 9 years was reported by surgical resection with a heart-first approach under cardiopulmonary bypass(CPB)(3),suggesting that aggressive surgery together with multidisciplinary treatments might achieve long ***,due to the aggressiveness and challenge of surgical resection-massive resection area,potential significant blood loss,and bypass needed,surgical resection is applied in very limited ***,safety,efficacy,and long-term survival benefits for these patients are poorly investigated.

关键词： Hepatocellular carcinoma(HCC) inferior vena cava(IVC) right atrium(RA) tumor thrombus(TT)

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Novel strategy of multidimensional information encryption via multi-color carbon dots aggregation-induced emission

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Nano Research 2024年第6期17卷 5680-5687页

作者： liu Ding Xilang Jin Yuchong Gao Shouwang Kang Haiyan Bai Xuehao Ma Taotao Ai Hongwei Zhou Weixing Chen Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province School of Materials and Chemical EngineeringXi’an Technological UniversityXi’an 710021China School of Material Science and Engineering Shaanxi University of TechnologyHanzhong 723000China Department of Materials Science and Engineering University of PennsylvaniaPhiladelphia 19104USA

Carbon dots(CDs)with aggregation-induced emission(AIE)have sparked significant interest in multidimensional anti-counterfeiting due to their exceptional fluorescence ***,the preparation of AIE CDs with multicolor solid-state fluorescence remains a formidable challenge due to its complicated *** the present work,a novel class of multicolor AIE CDs(M-CDs)were fabricated using selected precursor(salicylic acid,thiosalicylic acid,and 2,2'-dithiodibenzoic acid),with an eco-friendly,low-cost one-pot solvothermal *** the dilute organic solution,M-CDs manifested blue emission,but upon aggregation in the presence of water,the red,yellow,green,and blue emissions were displayed due to the AIE *** analysis,coupled with theoretical calculations,revealed that the increase in the size of sp2 domains would lower the Eg and cause a red-shift emission ***,the continuous emission of M-CDs from blue to red can be utilized as ink for multimode printing,enabling the creation of a variety of school badges and quick response *** findings hold promising implications for multi-information encryption applications.

关键词： aggregation-induced emission(AIE) luminescence mechanism multi-color emission information encryption.

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Influence of sea-land breeze on the formation and dissipation of severe dense fog and its burst reinforcement in the Yellow Sea coastal area,China

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Science China Earth Sciences 2024年第2期67卷 432-449页

作者： Ya GAO Duanyang liu Shuqi YAN Wenjun ZHOU Hongbin WANG Fan ZU Qin MEI Chuanxiang YI Ye SHENG Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing210041China Yancheng Meteorological Bureau Yancheng224000China Nanjing Joint Institute for Atmospheric Sciences Nanjing210041China Key Laboratory of Disaster Weather Chinese Academy of Meteorological SciencesBeijing100086China

Based on the global reanalysis data of the National Centers for Environmental Prediction(NCEP)/National Center for Atmospheric Research,the surface meteorological observation data,sounding data and satellite observation data,this paper comprehensively analyzes the evolution process and formation mechanism of a persistent severe dense fog process occurred on February 15–17,2015 in Yancheng,eastern *** the numerical simulation experiment of Weather Research and Forecast(WRF)model,we further analyze the impact of sea-land breeze on the formation and burst reinforcement of *** show that the precipitation caused by the southwesterly airflow in front of the upper-level trough and the low-pressure inverted trough are conducive to the formation of early rain fog,while the nighttime clear radiance under the control of surface cold high and the infiltration of weak cold advection are conducive to the formation and development of later radiation-advection *** WRF model simulates the fog evolution process,which is basically consistent with the actual fog area,and the simulation results are credible to a certain *** simulation results show that the establishment of sea breeze has an advection cooling effect on the near surface layer,which is conducive to the formation and development of the inversion layer on the near surface,providing stable stratification conditions for the formation and burst reinforcement of *** one hand,the strengthening of sea breeze circulation can continuously transport water vapor to the study *** the other,the occurrence of ultra-low level jet is favorable for the accumulation of low-level water *** the same time,the inversion intensity further strengthens,which is in favor of the burst reinforcement and long-term maintenance of fog.

关键词： Radiation-advection fog Sea-land breeze Atmospheric boundary layer Fog burst reinforcement WRF model

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Asymmetrically ligated single atomic nickel sites for efficient hydrogen peroxide electrosynthesis

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Nano Research 2024年第3期17卷 1094-1100页

作者： Xusheng Cheng Jinwen Hu Wenzhe Shang Jingya Guo Cuncun Xin Songlin Zhang Suchan Song Wei liu Yantao Shi State Key laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsSchool of ChemistryDalian University of TechnologyDalian 116024China

Atomic transition-metal-nitrogen-carbon electrocatalysts hold great promise as alternatives to benchmark Pt in the oxygen reduction *** pristine metal centers with quasi square-planar D_(4h) configuration,however,still suffer from unfavorable energetics and thereby strong activity/selectivity trade-off during the catalytic *** we present a ligand-field engineering of single-atom Ni-N-C catalysts to boost the sluggish kinetics via rationally constructing prototypical asymmetrically ligated Ni-N_(3)O_(1) *** as-obtained Ni-supported multi-walled carbon nanotubes with molten salt-treated(defined as Ni/CNS)catalyst delivered an excellent H_(2)O_(2) selectivity(>90%)within a wide potential window(0.2–0.7 V *** hydrogen electrode(RHE))and robust stability(for 10 h)in alkaline *** electron paramagnetic resonance and theoretical analysis rationalize this finding and demonstrate that the broken symmetry facilitates the electron transfer of a σ* to O–O orbital as compared to the Ni-N_(4) counterpart,playing an indispensable role in efficient O_(2) activation.

关键词： broken D4h single nickel sites oxygen reduction H_(2)O_(2)production

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Comprehensive insights into recent innovations:Magnesium-inclusive high-entropy alloys

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Journal of Magnesium and Alloys 2024年第4期12卷 1311-1345页

作者： Andrii Babenko Ehsan Ghasali Saleem Raza Kahila Baghchesaraee Ye Cheng Asif Hayat Peng liu Shuaifei Zhao Yasin Orooji Shandong Vocational and Technical University of International Studies Rizhao 276826China Zhejiang Normal University Jinhua 321004China Geelong Institute for Frontier MaterialsDeakin UniversityVIC 3216Australia

This review focuses on thermodynamic and physical parameters,synthesis methods,and reported phases of Magnesium(Mg)containing high-entropy alloys(HEAs).Statistical data of publications concerning Mg-containing HEAs were collected and *** on the chemical elements included in Mg-containing HEAs,their theoretical end experimental densities,thermodynamic parameters,physical parameters,fabricated techniques and reported phases were also collected and *** the basis of this information,a new classification for HEAs was *** is also shown that the existing thermodynamic parameters cannot accurately predict the formation of a single phase solid solution for Mg-containing *** physical parameters of Mg-containing HEAs are within a wide range,and most of the synthesized Mg-containing HEAs have a complex multiphase structure.

关键词： Magnesium High-entropy alloys Classification Thermodynamic parameters Physical parameters

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Experiment and constitutive modelling of creep deformation in the frozen silt-concrete interface

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Journal of Mountain Science 2024年第9期21卷 3172-3185页

作者： HE Fei liu Qingquan LEI Wanyu WANG Xu MAO Erqing LI Sheng CHEN Hangjie School of Civil Engineering Lanzhou Jiaotong UniversityLanzhou 730070China Key Laboratory of Road&Bridge and Underground Engineering of Gansu Province Lanzhou 730070China

To ensure the long-term safety and stability of bridge pile foundations in permafrost regions,it is necessary to investigate the rheological effects on the pile tip and pile side bearing *** creep characteristics of the pile-frozen soil interface are critical for determining the long-term stability of permafrost pile *** study utilized a self-developed large stress-controlled shear apparatus to investigate the shear creep characteristics of the frozen silt-concrete interface,and examined the influence of freezing temperatures(−1,−2,and−5°C),contact surface roughness(0,0.60,0.75,and 1.15 mm),normal stress(50,100,and 150 kPa),and shear stress on the creep characteristics of the contact *** incorporating the contact surface’s creep behavior and development trends,we established a creep constitutive model for the frozen silt-concrete interface based on the Nishihara model,introducing nonlinear elements and a damage *** results revealed significant creep effects on the frozen silt-concrete interface under constant load,with creep displacement at approximately 2-15 times the instantaneous displacement and a failure creep displacement ranging from 6 to 8 *** different experimental conditions,the creep characteristics of the frozen silt-concrete interface varied.A larger roughness,lower freezing temperatures,and higher normal stresses resulted in a longer sample attenuation creep time,a lower steady-state creep rate,higher long-term creep strength,and stronger creep *** upon the Nishihara model,we considered the influence of shear stress and time on the viscoelastic viscosity coefficient and introduced a damage factor to the *** improved model effectively described the entire creep process of the frozen silt-concrete *** results provide theoretical support for the interaction between pile and soil in permafrost regions.

关键词： Creep characteristics Contact surface Frozen silt Constitutive model Freezing temperature

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