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Flat Zn deposition at battery anode via an ultrathin robust interlayer

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nano Research 2024年第9期17卷 8104-8111页

作者： Yizhou Wang Jianyu Chen Zibo Chen Qian He Zhengnan Tian Jin Zhao Yanwen Ma husam n.alshareef Materials Science and Engineering King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia State Key Laboratory of Organic Electronics and Information Displays(KLOEID)and Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China Suzhou Vocational Institute of Industrial Technology Suzhou 215104China

Rechargeable aqueous zinc(Zn)ion batteries(AZIBs)using low-cost and safe Zn metal anodes are considered promising candidates for future grid-scale energy storage systems,but the Zn dendrite problem severely hinders the further prospects of *** Zn depositing behaviors toward horizontal alignment is highly effective and thus has received huge ***,such a strategy is usually based on previous substrate engineering,which requires complex preparation or expensive ***,it is essential to develop a novel solution that can realize horizontally aligned Zn flake deposition via easy operation and low ***,we report an ultrathin and robust Kevlar membrane as the interlayer to mechanically suppress Zn dendrite *** to the randomly distributed flaky dendrites in the control group,the deposited Zn sheets would grow into parallel alignment with the existence of such *** the dendrites are effectively suppressed,Zn||Cu asymmetric,Zn||Zn symmetric,and Zn||MnO_(2)full batteries using Kevlar interlayer deliver significantly improved cycling ***,the Zn||MnO_(2)pouch cell using a Kevlar interlayer delivers stable cycling performance and shows stable operation during multi-angle *** believe this work provides a new possibility for regulating Zn deposition from a crystallographic perspective.

关键词： Zn metal anodes Zn dendrites aqueous Zn ion batteries dendrite suppression (002)crystal plane

An aqueous 2.1 V pseudocapacitor with MXene and V-MnO_(2) electrodes

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nano Research 2022年第1期15卷 535-541页

作者： Jiabin Wu Qun Li Christopher E.Shuck Kathleen Maleski husam n.alshareef Jun Zhou Yury Gogotsi Liang Huang Wuhan national Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Department of Materials Science and Engineering and A./.Drexel nanomaterials Institute Drexel UniversityPhiladelphiaPennsylvania 19104USA Materials Science and Engineering Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

MXenes have shown record-breaking redox capacitance in aqueous electrolytes,but in a limited voltage window due to oxidation under anodic potential and hydrogen evolution under high cathodic *** Ti3C2Tx Xene negative electrode with RuO_(2) or carbon-based positive electrodes expanded the voltage window in sulfuric acid electrolyte to about 1.5 ***,we present an asymmetric pseudocapacitor using abundant and eco-friendly vanadium doped MnO_(2) as the positive and Ti_(3)C_(2)Tx MXene as the negative electrode in a neutral 1M Li2SO4 *** all-pseudocapacitive asymmetric device not only uses a safer electrolyte and is a much less expensive counter-electrode than RuO_(2),but also can operate within a 2.1 V voltage window,leading to a maximum energy density of 46 Wh/*** study also demonstrates the possibility of using MXene electrodes to expand the working voltage window of traditional redox-capable materials.

关键词： MXene pseudocapacitors metal oxides supercapacitors manganese oxide

Defect Engineering of Disordered Carbon Anodes with Ultra-High Heteroatom Doping Through a Supermolecule-Mediated Strategy for Potassium-Ion Hybrid Capacitors

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nano-Micro Letters 2023年第3期15卷 248-265页

作者： Lei Zhao Shirong Sun Jinxin Lin Lei Zhong Liheng Chen Jing Guo Jian Yin husam n.alshareef Xueqing Qiu Wenli Zhang Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of Technology(GDUT)100 Waihuan Xi RoadPanyu DistrictGuangzhou 510006People’s Republic of China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200People’s Republic of China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004People’s Republic of China Materials Science and Engineering Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955‑6900Saudi Arabia School of Advanced Manufacturing Research Institute of Green Chemical Engineering and Advanced MaterialsGuangdong University of Technology(GDUT)JieyangJieyang 515200People’s Republic of China

Amorphous carbons are promising anodes for high-rate potassium-ion *** low-temperature annealed amorphous carbons display unsatisfactory ***-induced defect engineering of amorphous carbons could enhance their reversible ***,most lignocellulose biomasses lack heteroatoms,making it a challenge to design highly heteroatom-doped carbons(>10 at%).Herein,we report a new preparation strategy for amorphous carbon ***/sulfur co-doped lignin-derived porous carbons(nSLPC)with ultra-high nitrogen doping levels(21.6 at%of n and 0.8 at%of S)from renewable lignin biomacromolecule precursors were prepared through a supramolecule-mediated pyrolysis *** supermolecule/lignin composite decomposes forming a covalently bonded graphitic carbon/amorphous carbon intermediate product,which induces the formation of high heteroatom doping in the obtained *** unique pyrolysis chemistry and high heteroatom doping of nSLPC enable abundant defective active sites for the adsorption of K+and improved *** nSLPC anode delivered a high reversible capacity of 419 mAh g^(-1)and superior cycling stability(capacity retention of 96.6%at 1 A g^(-1)for 1000 cycles).Potassiumion hybrid capacitors assembled by nSLPC anode exhibited excellent cycling stability(91%capacity retention for 2000 cycles)and a high energy density of 71 Wh kg^(-1)at a power density of 92 W kg^(-1).

关键词： Defect Heteroatom Active sites Supramolecule Potassium-ion hybrid capacitors

Photo-assisted electrochemical hydrogen evolution by plasmonic Ag nanoparticle/nanorod heterogeneity

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InfoMat 2019年第3期1卷 417-425页

作者： Hao Wu husam n.alshareef Ting Zhu Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Materials Science and Engineering Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)ThuwalSaudi Arabia School of Materials Science and Engineering Central South UniversityChangshaChina

Transition metal sulfide-based hydrogen evolution electrocatalysts still lag in catalytic activity due to the zero-deviated free energy of*H *** metals bridge the gap between light utilization and plasmon-mediated redox reactions for substantially enhanced electrocatalytic *** this work,a strategic broadband light utilization heterostructure,composed of two distinct Ag nanostructures(discontinuous Ag nanorods and monodispersed nanoparticles),is achieved through in situ sulfurization and metal *** heterostructure benefits the electrocatalytic hydrogen evolution reactivity thanks to the localized surface plasmon resonance induced hot electrons injection and inter-gap electric fields revealed by the finite-difference time-domain ***,the prudent heterostructured catalyst exhibits a significantly improved overpotential(at 10 mA cm−2)from 151 to 95 mV along with a Tafel slope from 74 to 45 mV dec−1 toward hydrogen ***,this instructional study sheds light on the design of hybrid photo-assisted electrocatalysts with cooperative effect of solar energy toward sustainable electrocatalysis.

关键词： hydrogen evolution interface photo-assisted plasmonic

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MXetronics-MXene电子学

无机材料学报 2024年第2期39卷 171-178页

作者：徐向明 husam n.alshareef 阿卜杜拉国王科技大学沙特阿拉伯图瓦23955-6900

超薄的过渡金属碳氮化合物MXenes,作为一大类新兴二维(2D)材料,是当前材料研究热点方向之一。自2D材料发现至今已有近20年,以石墨烯、过渡金属硫族化合物、黑磷等为代表的2D材料在微纳电子领域经历了相对广泛且深入的研究,MXenes自2011... 详细信息

超薄的过渡金属碳氮化合物MXenes,作为一大类新兴二维(2D)材料,是当前材料研究热点方向之一。自2D材料发现至今已有近20年,以石墨烯、过渡金属硫族化合物、黑磷等为代表的2D材料在微纳电子领域经历了相对广泛且深入的研究,MXenes自2011年诞生以来在微纳电子领域的研究也方兴未艾。MXenes拥有丰富的元素结构组成和独特的物理化学特性(表面亲水性、功函可调、官能团可调、电和离子快速传输特性、表面离子激元、光热电、电磁吸收等),使其在微纳电子领域具有潜在的应用前景。alshareef课题组近几年致力于将MXene引入到微纳电子领域,并在2019年用MXetronics来定义MXene电子学这一新兴的学术领域。本文简要总结和评价了该领域的代表性进展,梳理了包括微电子级的合成、加工、物性探索和器件应用等方面面临的挑战,最后指出一些关键的研究方向和尚未探索的细分领域。

关键词： MXenes 微纳电子薄膜微纳加工合成晶体管专题评述

Tungsten Blue Oxide as a Reusable Electrocatalyst for Acidic Water Oxidation by Plasma-Induced Vacancy Engineering

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CCS Chemistry 2021年第3期3卷 1553-1561页

作者： Hanfeng Liang Zhen Cao Chuan Xia Fangwang Ming Wenli Zhang Abdul-Hamid Emwas Luigi Cavallo husam n.alshareef Materials Science and Engineering Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955 KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)Thuwal 23955 Department of Chemical and Biomolecular Engineering Rice UniversityHoustonTX 770054 Core LabsKing Abdullah University of Science and Technology(KAUST)Thuwal 23955 Core Labs King Abdullah University of Science and Technology(KAUST)Thuwal 23955

In contrast to alkaline water electrolysis,acidic water electrolysis remains an elusive goal due to the lack of earth-abundant,efficient,and acid-stable water oxidation ***,we show that materials with intrinsically poor electrocatalytic activity can be turned into active electrocatalysts that drive the acidic oxygen evolution reaction(OER)*** development is achieved through ultrafast plasma sputtering,which introduces abundant oxygen vacancies that reconstruct the surface electronic structures,and thus,regulated the surface interactions of electrocatalysts and the OER *** tungsten oxide(WO_(3))as an example,we present a broad spectrum of theoretical and experimental characterizations that show an improved energetics of OER originating from surface oxygen vacancies and resulting in a significantly boosted OER performance,compared with pristine WO_(3).Our result suggests the efficacy of using defect chemistry to modify electronic properties and hence to improve the OER performance of known materials with poor activity,providing a new direction for the discovery of acid-stable OER catalysts.

关键词： WO_(3) vacancy engineering plasma acidic OER reusable electrocatalyst

基于MXenes生长光致发光铁电LinbO3晶体

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基于MXenes生长光致发光铁电LiNbO3晶体

Metal Ion Solvation Structure Prevail over Solid Electrolyte Interphase

第二届全国光电材料与器件学术研讨会

作者：涂少波张西祥 husam n.alshareef 阿卜杜拉国王科技大学材料科学与工程学院

这项工作首次使用MXene作为前驱体合成KnbO铁电晶体。我们利用二维nb2C MXene和氢氧化钾(KOH)分别作为铌和钾的来源制备高纵横比的铌酸钾(M-KnbO)晶体。通过结构分析证实获得的M-KnbO空间结构为正交Amm2。此外,对M-KnbO进行标准铁电,介...

这项工作首次使用MXene作为前驱体合成KnbO铁电晶体。我们利用二维nb2C MXene和氢氧化钾(KOH)分别作为铌和钾的来源制备高纵横比的铌酸钾(M-KnbO)晶体。通过结构分析证实获得的M-KnbO空间结构为正交Amm2。此外,对M-KnbO进行标准铁电,介电和压电显微测量,得到KnbO晶体饱和极化强度约为21μCcm,残余极化强度约为17μCcm,矫顽场约为50 kV cm。

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Metal Ion Solvation Structure Prevail over Solid Electrolyte...

Improving the Segmentation of Arabic Handwriting Using Ligature Detection Technique

第33届全国化学与物理电源学术年会

作者： Qian Li Zhen Cao Yang-Kook Sun husam n.alshareef Jun Ming State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences Materials Science and Engineering Physical Science and Engineering Division (PSE)King Abdullah University of Science and Technology (KAUST) Department of Energy Engineering Hanyang University

It is commonly believed that the formation of a solid-electrolyte interphase (SEI) is the main reason for improved electrode performance in rechargeable batteries.1-3 However,herein we present a new interfacial model that may change the thinking about the role of SEI,which has prevailed over the past 2 decades.4 We show that

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Computers, Materials & Continua 2024年第5期79卷 2015-2034页

作者： husam Ahmad Al Hamad Mohammad Shehab College of Computer Sciences and Informatics Amman Arab UniversityAmman11953Jordan

Recognizing handwritten characters remains a critical and formidable challenge within the realm of computervision. Although considerable strides have been made in enhancing English handwritten character recognitionthrough various techniques, deciphering Arabic handwritten characters is particularly intricate. This complexityarises from the diverse array of writing styles among individuals, coupled with the various shapes that a singlecharacter can take when positioned differently within document images, rendering the task more perplexing. Inthis study, a novel segmentation method for Arabic handwritten scripts is suggested. This work aims to locatethe local minima of the vertical and diagonal word image densities to precisely identify the segmentation pointsbetween the cursive letters. The proposed method starts with pre-processing the word image without affectingits main features, then calculates the directions pixel density of the word image by scanning it vertically and fromangles 30° to 90° to count the pixel density fromall directions and address the problem of overlapping letters, whichis a commonly attitude in writing Arabic texts by many people. Local minima and thresholds are also determinedto identify the ideal segmentation area. The proposed technique is tested on samples obtained fromtwo datasets: Aself-curated image dataset and the IFn/EnIT dataset. The results demonstrate that the proposed method achievesa significant improvement in the proportions of cursive segmentation of 92.96% on our dataset, as well as 89.37%on the IFn/EnIT dataset.

关键词： Arabic handwritten segmentation image processing ligature detection technique intelligent recognition