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Carbon coating of air-sensitive insulating transition metal fluorides:An example study on α-Li3FeF6 high-performance cathode for lithium ion batteries

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Journal of Materials Science & Technology 2020年第20期52卷 107-115页

作者： Anna Basa Sławomir Wojtulewski Beata Kalska-Szostko maciej perkowski Elena Gonzalo Olga Chernyayeva Alois Kuhn Flaviano García-Alvarado Institute of Chemistry University of Bialystokul.K.Ciolkowskiego 1K15-245 BialystokPoland Departamento de Química y Bioquímica Facultad de FarmaciaUniversidad CEU San Pablo28668 Boadilla del MonteMadridSpain Polish Institute of Physical Chemistry Kasprzaka St.44/5201-224 WarsawPoland CIC Energigune Parque Tecnologico de Alava01510 MinanoAlavaSpain

Li_(3)FeF_(6)has been the focus of research of fluorine-based cathode materials for lithium-ion *** of the low electronic conductivity of Li3 FeF6,the decrease of particle size,by an energyconsuming long-time ball milling process with carbon,is necessary to achieve a high electrochemical *** most successful method to enhance electrochemical activity,carbon coating,seemed to be impracticable,so far,for sensitive fluorides like Li3 *** this work,carbon coating on Li3 FeF6 particles has been successfully achieved for the first time,while avoiding both extended hydrolysis and Fe(Ⅲ)-Fe(Ⅱ)*** heat treatment and atmosphere,yielding the maximal transformation of organic carbon to both graphitised and disordered carbon,has been *** coating,with a thickness of approximately 2.5 nm,has been achieved by controlled thermal decomposition of glucose,under air,at 300℃.Raman and X-ray photoelectron spectroscopy(XPS)experiments have proved the existence of carbon and Fe2O3 on the surface of Li3FeF6 *** spectroscopy indicates the presence of organic residues from glucose *** to further reduce the orga nic carbon content results in a decrease of the amorphous carbon coating *** carbon-coated Li3 FeF6 nanoparticles deliver 122 mA h g^(-1)(85%of theoretical capacity)significantly higher than that of a noncoated sample(58 mA h g^(-1)).Even more,a significant beneficial effect of carbon coating on both capacity retention and coulombic efficiency is observed.

关键词： Lithium iron fluoride Hydrolysable fluoride Lithium battery Cathode Carbon coating

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Electroluminescence from pure resonant states in hBN-based vertical tunneling junctions

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Light(Science & Applications) 2024年第8期13卷 1557-1564页

作者： Magdalena Grzeszczyk Kristina Vaklinova Kenji Watanabe Takashi Taniguchi Konstantin SNovoselov maciej Koperski Institute for Functional Intelligent Materials National University of SingaporeSingapore 117544Singapore Research Center for Functional Materials National Institute for Materials ScienceTsukuba 305-0044Japan International Center for Materials Nanoarchitectonics National Institute for Materials ScienceTsukuba 305-0044Japan Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore

Defect centers in wide-band-gap crystals have garnered interest for their potential in applications among optoelectronic and sensor ***,defects embedded in highly insulating crystals,like diamond,silicon carbide,or aluminum oxide,have been notoriously difficult to excite electrically due to their large internal *** address this challenge,we realized a new paradigm of exciting defects in vertical tunneling junctions based on carbon centers in hexagonal boron nitride(hBN).The rational design of the devices via van der Waals technology enabled us to raise and control optical processes related to defect-to-band and intradefect *** fundamental understanding of the tunneling events was based on the transfer of the electronic wave function amplitude between resonant defect states in hBN to the metallic state in graphene,which leads to dramatic changes in the characteristics of electrons due to different band structures of constituent *** our devices,the decay of electrons via tunneling pathways competed with radiative recombination,resulting in an unprecedented degree of tuneability of carrier dynamics due to the significant sensitivity of the characteristic tunneling times on the thickness and structure of the *** enabled us to achieve a high-efficiency electrical excitation of intradefect transitions,exceeding by several orders of magnitude the efficiency of optical excitation in the sub-band-gap *** work represents a significant advancement towards a universal and scalable platform for electrically driven devices utilizing defect centers in wide-band-gap crystals with properties modulated via activation of different tunneling mechanisms at a level of device engineering.

关键词： carbide tunneling defect

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Recent progress in Ni-rich layered oxides and related cathode materials for Li-ion cells

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2345-2367页

作者： Boyang Fu maciej Moździerz Andrzej Kulka Konrad Świerczek Faculty of Energy and Fuels AGH University of Krakowal.A.Mickiewicza 3030-059 KrakowPoland AGH Centre of Energy AGH University of Krakowul.Czarnowiejska 3630-054 KrakowPoland

Undoubtedly,the enormous progress observed in recent years in the Ni-rich layered cathode materials has been crucial in terms of pushing boundaries of the Li-ion battery(LIB)*** achieved improvements in the energy density,cyclability,charging speed,reduced costs,as well as safety and stability,already contribute to the wider adoption of LIBs,which extends nowadays beyond mobile electronics,power tools,and electric vehicles,to the new range of applications,including grid storage *** numerous published papers and broad reviews already available on the subject of Ni-rich oxides,this review focuses more on the most recent progress and new ideas presented in the literature *** covered topics include doping and composition optimization,advanced coating,concentration gradient and single crystal materials,as well as innovations concerning new electrolytes and their modification,with the application of Ni-rich cathodes in solid-state batteries also *** cathode materials are briefly mentioned,with the high-entropy approach and zero-strain concept presented as well.A critical overview of the still unresolved issues is given,with perspectives on the further directions of studies and the expected gains provided.

关键词： lithium-ion batteries cathode materials nickel-rich layered oxides recent progress critical issues improvement strategies

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Crossover to PDT after the unsuccessful micropulse laser treatment of central serous chorioretinopathy

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Advances in Ophthalmology Practice and Research 2024年第1期4卷 32-38页

作者： maciej Gawęcki Krzysztof Kicinski Andrzej Grzybowski Dobry Wzrok Ophthalmological Clinic 80-822GdanskPoland Department of Ophthalmology Pomeranian Hospitals in Wejherowo84-200WejherowoPoland Institute for Research in Ophthalmology Foundation for Ophthalmology DevelopmentPoznanPoland

Purpose:Subthreshold micropulse laser(SML)and photodynamic therapy(PDT)are among the most effective therapeutic modalities applied to central serous chorioretinopathy(CSCR).This study aimed to evaluate the ef-ficacy and durability of PDT in CSCR cases unresponsive to at least two SML ***:The study included 26 consecutive eyes of 24 patients(21 males and three females)with chronic *** all cases,a lack of reduction in subretinal fluid(SRF)levels was noted after at least two consecutive SML *** parameters of best corrected visual acuity(BCVA)and spectral domain optical coherence tomog-raphy(SD-OCT)were evaluated at baseline and 1,3 and 12 months ***:The mean duration of symptoms in the group was 53.81±39.48 months,the mean age of the patients was 49.26±12.91 years,and the mean subfoveal choroidal thickness(SFCT)was 572.11±116.21 *** resorption of SRF was observed in 21 out of 26 eyes(80.77%)at 1 month and sustained in 18 cases(69.23%)at 12 *** 12 months,in the sustained group,BCVA improved significantly from 0.39±0.18 to 0.19±0.2 logMAR(P=0.01),central subfoveal thickness(CST)reduced from 316.44±75.83 mm to 197.67±22.99 mm(P<0.0001),and SFCT reduced from 579.28 mm to 446.78 mm(P<0.0001).Conclusions:PDT provides the opportunity for the successful treatment of CSCR unresponsive to SML *** are possible even in cases with a long duration of symptoms and significant alterations in retinal ***,PDT should be considered for patients with prominently increased choroidal thickness.

关键词： Photodynamic therapy Subthreshold micropulse laser Central serous chorioretinopathy Sybretinal fluid

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Treatment refractory mast cell leukemia with dominant gastrointestinal manifestation and concomitant skin symptoms:A case report

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World Journal of Clinical Cases 2024年第20期12卷 4317-4324页

作者： maciej Tomasz Wysocki maciej Gonciarz Bartosz Puła Department of Gastroenterology and Internal Medicine Military Institute of Medicine-National Research InstituteWarsaw 04-141Poland Department of Hematology Institute of Hematology and Transfusion MedicineWarsaw 02-776Poland

BACKGROUND Mast cell leukemia(MCL),a subtype of systemic mastocytosis(SM),is an extremely rare clinical entity characterized by a very poor ***,tyrosine kinase inhibitors,and allogeneic hematopoietic cell transplantation are the only treatment options,but they cannot provide the desired outcomes in most cases of ***,other types of SM can be successfully *** disease has no specific manifestation,but gastroenterological symptoms are present in most *** SUMMARY The authors,hereby,report a case of a 46-year-old female patient diagnosed with MCL-the rarest subtype of *** patient presented to the gastroenterology clinic with multiple,various,and unspecific gastroenterological *** of skin lesions significantly contributed to a relatively prompt *** serum tryptase level was extremely high and bone the marrow aspirate showed an infiltration of atypical mast *** disease was rapidly progressive and primary refractory to chemotherapy and the patient succumbed to the illness about a month after the initiation of *** Despite its“hematological nature”,MCL,in most cases presents dominantly with unspecific gastroenterological ***,a high disease awareness among physicians other than hematologists is necessary to improve treatment *** tryptase level,due to its non-invasive nature and easy access,may serve as an initial step to estimate the probability of mastocytosis.

关键词： Mastocytosis Systemic mastocytosis Mast cell leukemia Tryptase Case report

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The g-factor measurement as an ultimate test for nuclear chirality

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Frontiers of physics 2024年第3期19卷 1-10页

作者： Ernest Grodner Michał Kowalczyk Julian Srebrny Leszek Próchniak Chrystian Droste Jan Kownacki maciej Kisieliński Krzysztof Starosta Takeshi Koike National Centre for Nuclear Research 05-540ŚwierkPoland Heavy Ion Laboratory University of WarsawPasteura 5a02-093 WarsawPoland Faculty of Physics University of WarsawPasteura 502-093 WarsawPoland Simon Fraser University 8888 University Drive BurnabyB.C.Canada V5A 1S6 Department of Physics Tohoku UniversitySendaiMiyagi 980-8577Japan

We present results of a series of experiments aimed at finding the most direct fingerprints of a phenomenon of nuclear chirality. These experiments brought a detailed knowledge of the so called partner bands in 132La, 128Cs and 126Cs including absolute values of E2 and M1 transition probabilities obtained through the DSA (Doppler Shift Attenuation) method. Considering the indirect character of observables such as energies and transition rates we proposed measurement of the g-factor of a chosen state as a direct, ultimate test of chirality. Our experiment on the bandhead of partner bands in 128Cs showed feasibility of this approach. Measured value of the g-factor which suggests non-chiral character of this state leads to another puzzle in the chirality studies — how the chirality emerges with increasing spin of levels along a partner band.

关键词： nuclear chirality electromagnetic transitions electromagnetic moments level lifetimes

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Rare extraintestinal manifestations of ulcerative colitis treated with dual biologic therapy:A case report

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World Journal of Clinical Cases 2024年第23期12卷 5441-5447页

作者： Aleksandra Filipiuk maciej Gonciarz Department of Gastroenterology and Internal Medicine Military Institute of Medicine-National Research Institute in WarsawWarsaw 04-141Poland

BACKGROUND Ulcerative colitis(UC)is an idiopathic,chronic inflammatory bowel disease(IBD)most often located in the rectum,but may involve the entire *** intestinal manifestations(EIMs)occur with varying frequency depending on the affected *** most common ones are musculoskeletal EIMs,affecting up to 33%-40%of IBD *** include,among others,inflammatory back pain,tendinitis,plantar fasciitis and *** a few case reports in literature discuss Achilles *** SUMMARY This report describes a patient with UC and Achilles tendinitis in whom after many unsuccessful attempts of treatment with sulfasalazine,mesalazine,glucocorticosteroids,infliximab and tofacitinib,a complete UC remission and resolution of Achilles tendinitis were achieved with the use of dual biologic therapy(DBT)-ustekinumab and adalimumab(ADA).CONCLUSION This case mentions rare EIMs of UC and suggests that DBT may be an alternative for patient with ulcerative colitis and EIMs.

关键词： Achilles tendinitis Dual biologic therapy Extraintestinal manifestations Spondyloarthropathy Ulcerative colitis Case report

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激励参数对Q235钢增量磁导率蝶形图的影响研究

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机械工程学报 2024年第2期60卷 27-35页

作者：涂洪铭伍剑波柯瑞夏慧陈笑天 maciej Roskosz 四川大学机械工程学院成都610065 AGH科技大学机械工程与机器人学院波兰克拉科夫30-059

增量磁导率检测法是一种新型电磁无损检测方法,能够实现对铁磁性材料多种特性的定量或定性检测与评估。由于增量磁导率信号特征值容易受电磁影响,不同的激励条件会影响其最终评价的结果,且尚未有研究分析激励参数对增量磁导率蝶形图的... 详细信息

增量磁导率检测法是一种新型电磁无损检测方法,能够实现对铁磁性材料多种特性的定量或定性检测与评估。由于增量磁导率信号特征值容易受电磁影响,不同的激励条件会影响其最终评价的结果,且尚未有研究分析激励参数对增量磁导率蝶形图的影响。通过多种激励参数变化下的增量磁导率检测方法试验,分析高频/低频磁化的频率、强度、叠加方向以及提离效应带来的影响,探究不同激励参数下增量磁导率的变化规律,结果表明高频/低频磁场强度、频率、方向以及提离对增量磁导率信号及其蝶形图的特征值影响程度各不相同,为增量磁导率检测法的信号分析和工业应用奠定理论基础。

关键词：无损检测增量磁导率激励参数矫顽力

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Optimizing magneto-ionic performance in structure/composition-engineered ternary nitrides

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Journal of Materiomics 2024年第4期10卷 870-879页

作者： Zheng Ma P.Monalisha Zhengwei Tan Eva Pellicer maciej O.Liedke Maik Butterling Ahmed G.Attallah Eric Hirschmann Andreas Wagner Fatima Ibrahim Mairbek Chshiev Enric Menndez Jordi Sort Departament de Física Universitat Autònoma de BarcelonaCerdanyola del Vallès08193Spain Institute of Radiation Physics Helmholtz-Zentrum Dresden–RossendorfDresden01328Germany University of Grenoble Alpes CEACNRSSPINTECGrenoble38000France Institut Universitaire de France Paris75231France InstitucióCatalana de Recerca i Estudis Avançats(ICREA) Pg.Lluís Companys 23Barcelona08010Spain

Magneto-ionics,an emerging approach to manipulate magnetism that relies on voltage-driven ion motion,holds the promise to boost energy efficiency in information technologies such as spintronic devices or future non-von Neumann computing *** this purpose,stability,reversibility,endurance,and ion motion rates need to be synergistically *** various ions,nitrogen has demonstrated superior magneto-ionic performance compared to classical species such as oxygen or ***,we show that ternary Co1−xFexN compound exhibits an unprecedented nitrogen magneto-ionic *** substitution of Co by Fe in binary CoN is shown to be favorable in terms of generated magnetization,cyclability and ion motion ***,the Co_(0.3)5Fe_(0.6)5N films exhibit an induced saturation magnetization of 1,500 emu/cm^(3),a magneto-ionic rate of 35.5 emu/(cm^(3)·s)and endurance exceeding 103 *** values significantly surpass those of other existing nitride and oxide *** improvement can be attributed to the larger saturation magnetization of Co_(0.35)Fe_(0.65) compared to individual Co and Fe,the nature and size of structural defects in as-grown films of different composition,and the dissimilar formation energies of Fe and Co with N in the various developed crystallographic structures.

关键词： Voltage control of magnetism Magneto-ionics Electrolyte gating Ternary nitrides Ion transport

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Gadolinium-modified titanium oxide materials for photoenergy applications:a review

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Journal of Rare Earths 2014年第6期32卷 487-495页

作者： maciej Zalas Faculty of Chemistry Adam Mickiewicz University in Poznań

Gadolinium doped titania materials were explored for application in photoenergy production. Incorporation of gadolinium into titania permitted improvement of photocatalytic or photovoltaic performance of the latter. This review provided a deep analysis of gadolinium applications in photoenergy processes and devices with the main focus on explanation of gadolinium doping effect on physicochemical properties of titania.

关键词： gadolinium doped titania Gd-TiO2 photocatalysis dye-sensitized solar cells photoenergy rare earths

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