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Multifunctional SnO_(2) QDs/MXene Heterostructures as Laminar Interlayers for Improved Polysulfide Conversion and Lithium Plating Behavior

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Nano-Micro Letters 2024年第11期16卷 156-169页

作者： Shungui Deng Weiwei Sun Jiawei Tang Mohammad Jafarpour Frank Nüesch Jakob Heier chuanfang zhang College of Materials Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China Laboratory for Functional Polymers Swiss Federal Laboratories for Materials Science and Technology(EMPA)Überlandstrasse 1298600 DübendorfSwitzerland Institute of Materials Science and Engineering Ecole Polytechnique Fédérale de Lausanne(EPFL)Station 121015 LausanneSwitzerland Key Laboratory of Quantum Materials and Devices of Ministry of Education School of PhysicsSoutheast UniversityNanjing 211189People’s Republic of China SEU‑FEI Nano‑Pico Center Key Laboratory of MEMS of Ministry of EducationSoutheast UniversityNanjing 210096People’s Republic of China

Poor cycling stability in lithium–sulfur(Li–S)batteries necessitates advanced electrode/electrolyte design and innovative interlayer *** catalysis has emerged as a promising approach,leveraging the adsorption and catalytic performance on lithium polysulfides(LiPSs)to inhibit LiPSs shuttling and improve redox *** this study,we report an ultrathin and laminar SnO_(2)@MXene heterostructure interlayer(SnO_(2)@MX),where SnO_(2) quantum dots(QDs)are uniformly distributed across the MXene *** combined structure of SnO_(2) QDs and MXene,along with the creation of numerous active boundary sites with coordination electron environments,plays a critical role in manipulating the catalytic kinetics of sulfur *** Li–S cell with the SnO_(2)@MX-modified separator not only demonstrates superior electrochemical performance compared to cells with a bare separator but also induces homogeneous Li deposition during *** a result,an areal capacity of 7.6 mAh cm^(-2) under a sulfur loading of 7.5 mg cm^(-2) and a high stability over 500 cycles are *** work demonstrates a feasible strategy of utilizing a laminar separator interlayer for advanced Li–S batteries awaiting commercialization and may shed light on the understanding of heterostructure catalysis with enhanced reaction kinetics.

关键词： Lithium-sulfur battery Heterogeneous catalysis Heterostructure Redox kinetics Lithium dendrites

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多功能MXene油墨:面向印刷能源及电子器件的新视角

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无机材料学报 2024年第2期39卷 195-203页

作者：邓顺桂张传芳四川大学材料科学与工程学院成都610065 瑞士联邦理工学院联邦材料科学与技术研究所瑞士杜本多夫CH-8600

基于功能油墨的先进印刷技术(打印、涂布),能够突破传统制造手段的瓶颈,实现具有复杂结构和特定功能的个性化薄膜及电子器件的快速成型,在可穿戴智能识别、能源存储、电磁屏蔽及吸波、触摸显示等领域展现出巨大的应用前景。印刷先进能... 详细信息

基于功能油墨的先进印刷技术(打印、涂布),能够突破传统制造手段的瓶颈,实现具有复杂结构和特定功能的个性化薄膜及电子器件的快速成型,在可穿戴智能识别、能源存储、电磁屏蔽及吸波、触摸显示等领域展现出巨大的应用前景。印刷先进能源及电子器件的关键在于,开发先进功能油墨材料和与之相匹配的先进印刷技术。2011年发现的MXene材料,是一类由过渡金属碳化物、氮化物或碳氮化物所组成的二维大家族的总称,因其卓越的物理和化学性质(如高电导率、出色的亲水性和丰富的表面化学)而受到广泛关注,特别适合作为印刷电子器件的油墨材料。探索MXene油墨的印刷行为特征并厘清MXene油墨在印刷关键环节中的机理,不仅有助于获得高精度的MXene油墨印刷图案,而且可以为印刷多尺度、多材料的多功能薄膜和电子器件打下了坚实基础。本文首先介绍了MXene的制备及其片层胶体的化学稳定性,并对其流变学特性、可打印油墨的形成、油墨印刷行为以及与之适配的打印方法进行了讨论,着眼于MXene油墨在能源、健康监测和传感应用方面的最新进展,分析了该领域面临的挑战和未来的发展方向,为该领域的研究者提供新的视角和启示。

关键词：印刷电子功能油墨 MXene 增材制造健康监测专题评述

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Gas-phase synthesis of Ti_(2)CCl_(2) enables an efficient catalyst for lithiumsulfur batteries

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The Innovation 2024年第1期5卷 33-40页

作者： Maoqiao Xiang Zihan Shen Jie Zheng Miao Song Qiya He Yafeng Yang Jiuyi Zhu Yuqi Geng Fen Yue Qinghua Dong Yu Ge Rui Wang Jiake Wei Weiliang Wang Haiming Huang Huigang zhang Qingshan Zhu chuanfang John zhang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of the Chinese Academy of SciencesBeijing 100049China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China China Nuclear Power Engineering Co. Ltd.117 West Third Ring RoadNorth SectionBeijing 100840China College of Materials Science&Engineering Sichuan UniversityChengdu 610065China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Physics Guangdong Province Key Laboratory of Display Material and TechnologyCenter for Neutron Science and TechnologySun Yat-sen UniversityGuangzhou 510275China Solid State Physics&Material Research Laboratory School of Physics and Materials ScienceGuangzhou UniversityGuangzhou 510006China

MXenes have aroused intensive enthusiasm because of their exotic properties and promising ***,to date,they are usually synthesized by etching *** synthetic technologies provides more opportunities for innovation and may extend unexplored ***,we report a bottom-up gas-phase synthesis of Cl-terminated MXene(Ti_(2)CCl_(2)).The gas-phase synthesis endows Ti_(2)CCl_(2) with unique surface chemistry,high phase purity,and excellent metallic conductivity,which can be used to accelerate polysulfide conversion kinetics and dramatically prolong the cyclability of Li-S ***-depth mechanistic analysis deciphers the origin of the formation of Ti_(2)CCl_(2) and offers a paradigm for tuning MXene chemical vapor *** brief,the gas-phase synthesis transforms the synthesis of MXenes and unlocks the hardly achieved potentials of MXenes.

关键词： synthesis phase lithium

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Interfacial assembly of two-dimensional MXenes

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Journal of Energy Chemistry 2021年第9期30卷 417-434页

作者： chuanfang(John)zhang Laboratory for Functional Polymers Swiss Federal Laboratories for Materials Science and Technology(Empa)ETH DomainUberlandstrasse 129CH-8600 DubendorfSwitzerland

Two-dimensional(2D) transition metal carbides, carbonitrides and nitrides, known as MXenes, are emerging quickly at the frontiers of 2D materials world. Their exotic properties such as the highest electrical conductivity among all solution-processed 2 D materials, the best electromagnetic interference shielding performance outperforming that of copper or aluminum at a nanoscale thickness, as well as the highest volumetric capacitance for pseudocapacitors, have been attracting extensive fundamental research and applications. Their unique surface chemistries, that is, hydrophilic groups terminated on the surface of MXenes after etching and delamination, enable plenty of opportunities for assembling into MXene building blocks. Particularly, assembling at liquid–liquid, liquid–solid, liquid–air, and solid–solid interfaces allows the efficient fabrication of various structures, including MXene surfactants, MXene heterostructures, MXene transparent films. Interfacial assembly of MXenes is of significance in unveiling more versatilities of MXenes as well as impacts on novel MXene-based architectures, based on which enhanced performance of devices is achieved. As such, this review focuses on the interfacial assembly of MXenes, explaining mechanisms behind various assembling and providing classical examples for corresponding interfacial assembling techniques. Applications of these as-assembled architectures are also discussed in brief. We believe this review may shed light on the interfacial chemistry of MXenes, thus guiding more efficient fabrication of MXene-based functional films/coatings/electrodes/devices.

关键词： Interfacial assembly MXene Interfacial tension Crosslinking Heterostructures

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病毒性肝炎诊断中血常规检验与生化检验的价值

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中国医药指南 2024年第20期22卷 77-79页

作者：许婷张传芳宜春市中医院检验科宜春336000

目的探讨病毒性肝炎诊断中血常规检验与生化检验的价值。方法于2022年1月至2023年6月筛选共计96例于我院就诊的患者,本研究另选取了96名正常体检者作为对照组,对两组均进行血常规和生化检验,对血常规四项检验结果和生化检验四项检验结... 详细信息

目的探讨病毒性肝炎诊断中血常规检验与生化检验的价值。方法于2022年1月至2023年6月筛选共计96例于我院就诊的患者,本研究另选取了96名正常体检者作为对照组,对两组均进行血常规和生化检验,对血常规四项检验结果和生化检验四项检验结果以及诊断效果进行对比。结果在血常规四项检验结果对比中,观察组血小板计数、白细胞计数、中性粒细胞计数均低于对照组,在淋巴细胞计数上高于对照组(均P<0.05);在生化检验四项检验结果(白蛋白、肝功能白球比、谷丙转氨酶和总胆红素)的数据上,观察组的白蛋白和肝功能白球比水平均低于对照组,谷丙转氨酶和总胆红素均高于对照组(均P<0.05);以观察组的病理诊断为金标准,生化检验的病毒性肝炎检出率高于血常规检验的检出率(P<0.05)。结论在病毒性肝炎诊断中,采取血常规检验和生化检验均有参考价值,但是生化检验的检出率更高,更具有检验价值。

关键词：病毒性肝炎诊断血常规检验生化检验

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关于一类1^(∞)型未定式的极限问题——由两个数例极限想到的

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牡丹江师范学院学报（自然科学版） 2024年第2期 75-76,80页

作者：张传芳杨春玲广东石油化工学院理学院广东茂名525000

给出计算一类幂指函数中1^(∞)型未定式极限的四个结论,举例说明这些结论在解题中可以使得求解过程简洁易懂.

关键词：未定式极限幂指函数

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Perspectives on electrochemical nitrogen fixation catalyzed by two-dimensional MXenes

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Materials Reports(Energy) 2022年第1期2卷 3-16页

作者： Tiezhu Guo Di Zhou chuanfang(John)zhang Laboratory for Functional Polymers EmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129CH-8600DübendorfSwitzerland Key Laboratory of Multifunctional Materials and Structures Ministry of EducationSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'an710049ShaanxiPR China

Ammonia is the most basic raw material in industrial and agricultural *** current industrial production of ammonia relies on the Haber-Bosch process with high energy *** overcome this shortcoming,the development of electrocatalytic ammonia synthesis under moderate conditions is considered as a potential alternative *** two-dimensional(2D)MXenes family has been proved promising as electrocatalysts,but from the currently available literature,it is hard to find a systematic review on MXenes-catalyzed ammonia *** in the present review,we summarize the key perspectives on that topic in recent years as well as outline,from a prospective view,strategies of catalyst *** analyze in detail the methods for preparing high performance MXenes-based catalysts and the corresponding underlying mechanisms,and also discuss the criteria and potential challenges,expecting to provide inspiration for the development of efficient MXenes-based route to electrochemical ammonia fixation.

关键词： 2D materials MXenes Ammonia synthesis Electrocatalytic nitrogen reduction reaction (NRR) Electrocatalysts

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Two-dimensional MXenes for lithium-sulfur batteries

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InfoMat 2020年第4期2卷 613-638页

作者： chuanfang(John)zhang Linfan Cui Sina Abdolhosseinzadeh Jakob Heier Laboratory for Functional Polymers EmpaSwiss Federal Laboratories for Materials Science and TechnologyDubendorfSwitzerland Department of Electronics and Nanoengineering Aalto UniversityAaltoFinland Institute of Materials Science and Engineering Ecole Polytechnique Federale de Lausanne(EPFL)LausanneSwitzerland

Rechargeable lithium-sulfur(Li-S)batteries have attracted significant research attention due to their high capacity and energy ***,their commercial applications are still hindered by challenges such as the shuttle effect of soluble lithium sulfide species,the insulating nature of sulfur,and the fast capacity decay of the *** efforts are devoted to address these problems through questing more conductive hosts with abundant polysulfide chemisorption sites,as well as modifying the separators to physically/chemically retard the polysulfides *** dimensional transition metal carbides,carbonitrides and nitrides,so-called MXenes,are ideal for confining the polysulfides shuttling effects due to their high conductivity,layered structure as well as rich surface *** such,MXenes have thus been widely studied in Li-S batteries,focusing on the conductive sulfur hosts,polysulfides interfaces,and ***,in this review,we summarize the significant progresses regarding the design of multifunctional MXene-based Li-S batteries and discuss the solutions for improving electrochemical performances in *** addition,challenges and perspectives of MXenes for Li-S batteries are also outlined.

关键词： flexible electronics Li-S battery MXene polysulfides shuttling two dimensional materials

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Two-Dimensional Transition Metal Carbides and Nitrides(MXenes): Synthesis, Properties, and Electrochemical Energy Storage Applications

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Energy & Environmental Materials 2020年第1期3卷 29-55页

作者： chuanfang (John) zhang Yonglu Ma Xuetao zhang Sina Abdolhosseinzadeh Hongwei Sheng Wei Lan Amir Pakdel Jakob Heier Frank Nüesch Laboratory for Functional Polymers EmpaSwiss Federal Laboratories for Materials Science and TechnologyUberlandstrasse 129CH-8600Dubendorf Switzerland Key Laboratory of Special Function Materials and Structure Design Ministry of EducationSchool of Physical Science and TechnologyLanzhou UniversityLanzhou 730000China Institute of Materials Science and Engineering Ecole Polytechnique Federale de Lausanne(EPFL)Station 12CH-1015Lausanne Switzerland Assoc.Prof.A.Pakdel School of Chemistry University College Dublin (UCD) Belfield Dublin 4 Ireland

A family of 2D transition metal carbides and nitrides known as MXenes has received increasing attention since the discovery of Ti3C2 in 2011. To date, about 30 different MXenes with well-defined structures and properties have been synthesized, and many more are theoretically predicted to exist. Due to the numerous assets including excellent mechanical properties, metallic conductivity,unique in-plane anisotropic structure, tunable band gap, and so on, MXenes rapidly positioned themselves at the forefront of the 2D materials world and have found numerous promising applications. Particular interest is devoted to applications in electrochemical energy storage, whereby 2D MXenes work either as electrodes,additives, separators, or hosts. This review summarizes recent advances in the synthesis, fundamental properties and composites of MXene and highlights the state-of-the-art electrochemical performance of MXene-based electrodes/*** progresses in the field of supercapacitors and Li-ion batteries, Li-S batteries, Naand other alkali metal ion batteries are reviewed, and current challenges and new opportunities for MXenes in this surging energy storage field are presented. In the focus of interest is the possibility to boost device-level performance, particularly that of rechargeable batteries, which are of utmost importance in future energy technologies. Very recently, the 2019 Nobel Prize in Chemistry was awarded to the inventors of the Li-ion battery. For sure, this will provide an additional stimulation to study fundamental aspects of electrochemical energy storage.

关键词： battery energy storage MXene supercapacitor transition metal carbide

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共形时域有限差分法在不同形状微带贴片天线特性分析中的应用

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西北工业大学学报 2007年第2期25卷 235-238页

作者：路占波张安侯新宇章传芳西北工业大学陕西西安710072 中航雷达与电子设备研究院江苏无锡214063

应用共形时域有限差分法(CFDTD)对不同形状微带贴片天线的特性进行了有效的分析。为了提高计算精度,对天线激励源、导体贴片等组成部分进行了预处理。通过对时域结果的傅立叶变换,得到与频率有关的天线特性参数。实际制作并测试了五角... 详细信息

应用共形时域有限差分法(CFDTD)对不同形状微带贴片天线的特性进行了有效的分析。为了提高计算精度,对天线激励源、导体贴片等组成部分进行了预处理。通过对时域结果的傅立叶变换,得到与频率有关的天线特性参数。实际制作并测试了五角形和椭圆形贴片微带天线的反射损耗和辐射场方向图,并与CFDTD仿真结果进行了比较。结果吻合良好,表明该方法对复杂微带天线的分析非常有效。

关键词：共形时域有限差分微带贴片天线反射损耗辐射场方向图

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