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Electrochemical anodic oxidation assisted fabrication of memristors

International Journal of Extreme Manufacturing 2024年第3期6卷 250-272页

作者： Shuai-Bin Hua Tian Jin Xin Guo School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China

Owing to the advantages of simple structure,low power consumption and high-density integration,memristors or memristive devices are attracting increasing attention in the fields such as next generation non-volatile memories,neuromorphic computation and data ***,the deposition of memristive films often requires expensive equipment,strict vacuum conditions,high energy consumption,and extended processing *** contrast,electrochemical anodizing can produce metal oxide films quickly(e.g.10 s) under ambient *** means of the anodizing technique,oxide films,oxide nanotubes,nanowires and nanodots can be fabricated to prepare *** film thickness,nanostructures,defect concentrations,etc,can be varied to regulate device performances by adjusting oxidation parameters such as voltage,current and *** memristors fabricated by the anodic oxidation technique can achieve high device consistency,low variation,and ultrahigh yield *** article provides a comprehensive review of the research progress in the field of anodic oxidation assisted fabrication of ***,the principle of anodic oxidation is introduced;then,different types of memristors produced by anodic oxidation and their applications are presented;finally,features and challenges of anodic oxidation for memristor production are elaborated.

关键词： anodic oxidation anodized aluminium oxide memristor resistive switching electrical properties

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Manipulating Zn^(2+)solvation environment in poly(propylene glycol)-based aqueous Li^(+)/Zn^(2+)electrolytes for high-voltage hybrid ion batteries

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Carbon Energy 2023年第12期5卷 125-136页

作者： Hang Lu Sheng Zheng Lu Wei Xiaodong Zhang Xin Guo State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina

Compared with aqueous single-ion batteries,rechargeable aqueous hybrid ion batteries,especially Li^(+)/Zn^(2+)hybrid ion batteries,are receiving extensive interest owing to their low cost,high operating voltage,and energy ***,their working voltage and lifespan are limited by the decomposition of water and the growth of Zn ***,detrimental side reactions induced by the water reduction and the Zn dendrite growth are successfully suppressed by a poly(propylene glycol)(PPG)-based hybrid ion electrolyte[(1 m Zn(TFSI)2+10 m LiTFSI)in PPG/H2O].The addition of PPG in the electrolyte can not only enhance the bonding strength of hydrogen-bond in water but also tailor the solvation sheath of Zn2+as revealed by synchrotron *** participated solvation of PPG with Zn^(2+)can weaken Zn-H_(2)O interactions and redistribute Zn^(2+)flux on the surface of the Zn anode,thus inducing favorably even deposition of *** addition,the decomposition of TFSI-contributes a ZnF_(2)-enriched solid electrolyte interface at the Zn anode to further prevent water decomposition and restrain Zn *** PPG-based electrolyte enables 2.1 V LiMnO_(2)//Zn batteries to deliver high specific capacities(121.7 mAh g^(-1)for a coin cell and 90 mAh g^(-1)for a pouch cell),and maintain 80%of the capacity over 700 cycles at 0.5 C,suggesting a promising pathway for highly reversible aqueous hybrid ion batteries.

关键词： high voltage aqueous electrolyte hybrid ion battery molecular interaction poly(propylene glycol) zinc metal anode

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Chemical-vapor-deposition-grown 2D transition metal dichalcogenides:A generalist model for engineering electrocatalytic hydrogen evolution

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Nano Research 2023年第1期16卷 101-116页

作者： Yang Zhao Jiazhao Huang Jianqiang Chen Youwen Liu Tianyou Zhai State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China

Two-dimensional(2D)transition metal dichalcogenides(TMDs)have proved to possess exceptional catalytic performance for hydrogen evolution and are considered to be an appropriate substitute for commercial Pt-based ***,chemical vapor deposition(CVD)is an extremely important technique for acquiring controllable and high-purity TMDs for electrocatalysis and modern electronic ***,researchers have made significant achievements in synthesizing TMDs used for electrocatalytic hydrogen evolution by CVD ranging from dynamic mechanism exploration to performance *** this review,we present the recent progress based on electrocatalytic hydrogen evolution implemented by CVDgrowth TMDs nanosheets and unveil the structural–activity ***,in synthesis,diverse factors covering precursor,substrate,temperature settings,and atmosphere will affect the quality and surface morphology of ***,we present the current research status of the CVD-grown 2D TMDs for engineering electrocatalytic hydrogen evolution,including intrinsic performance exploring,morphology engineering,composition adjusting,phase engineering,and vertically-oriented structure ***,the future prospects and challenges of CVD in 2D TMDs electrocatalysis are provided.

关键词： chemical vapor deposition two-dimensional(2D)transition metal dichalcogenides electrochemistry hydrogen evolution on-chip electrocatalysis

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Magnetic nanofluid-based liquid marble for a self-powered mechanosensation

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Droplet 2024年第3期3卷 57-64页

作者： Manhui Chen Ziwei Liu Yike Li Shanfei Zhang Peng Chen Pengyu Zhang Bin Su State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina

Magnetic nanofluid possesses the characteristic of interfering with the propagation of the magnetic field,endowing it with the sensing property in ***,the residual adhesion of magnetic nanofluid as it flows over solid surfaces remains an open *** marbles allow for quantities of liquids to be encapsulated by hydrophobic particles,ensuring a unique nonstick property for utilization in different *** this study,being capsuled by hydrophobic nano-/microscale powders,a magnetic nanofluid-based liquid marble(MNLM)with well mechanical stability has been fabricated.A magnetic nanofluid posture detector(MNPD),which consists of an MNLM,a magnetic tube,and coils,has been assembled that can convert mechanical energy to electricity as it freely rolls on the solid *** recognition can be achieved when combining five MNPDs with *** fabricated MNPD possesses a good signal recognition capability,which can separately distinguish the bending of each ***,a variety of language hand gestures with specific meanings(dig-its,letters,“OK,”and“I Love You”)can be further recognized through corresponding *** potential of MNPD in the realm of gesture recognition will offer a novel avenue for flexible wearables.

关键词： wear fluid property

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Research,application and development of inorganic binder for casting process

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China Foundry 2024年第5期21卷 461-475页

作者： Xiao-long Gong Sheng-li Hu Zi-tian Fan State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

Inorganic binder used in casting process has the advantages of low odor,labor-friendly conditions,and relatively low cost,which is one of the main development directions for casting molding materials in the ***,compared to organic binders(such as resin binders),inorganic binders exhibit lower bonding strength and are more sensitive to environmental *** sensitivity poses challenges,particularly in the reclamation of used sand,thus limiting their broader *** this paper,the research and application status of inorganic binders(mainly silicate inorganic binders)and their curing methods are *** addition,the research and application of phosphate inorganic binders and 3D printing inorganic binders that are being developed are ***,a detailed comparative analysis is conducted on the challenging issue of“reclamation for used sand”in the application of inorganic ***,the development direction of inorganic binders is clarified.

关键词： inorganic binder silicate system phosphate system 3D printing used sand reclamation development trend

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Transformation of postsynthesized F-MOF to Fe/N/F-tridoped carbon nanotubes as oxygen reduction catalysts for high power density Zn-air batteries

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Chinese Chemical Letters 2023年第5期34卷 509-515页

作者： Ao Yu Wangtao Long Longtao Zhu Yinan Zhao Ping Peng Fang-Fang Li State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The oxygen reduction reaction(ORR),an important process in Zn-air batteries(ZABs),shows sluggish reaction kinetics,which significantly impairs the further improvement of battery ***,rationally designing cathodic catalysts for ZABs has drawn sufficient *** herein synthesize and characterize Fe/N/F-tridoped CNTs(FeNFCs)by annealing the postsynthesized trifluoroacetic anhydridemodified Fe-MIL-88B-NH_(2)nanocrystals with melamine at high temperature in a N_(2)*** from the Fe/N/F element doping,high specific surface area,and CNT structure,the FeNFC800 catalyst prepared at 800℃exhibits a preferable half-wave potential of 0.829 V *** Zn-air battery equipped with Fe NFC800 shows a high open-circuit voltage of 1.47 V,a gratifying peak power density of196 mW/cm^(2),and extraordinary long-term stability,outperforming the benchmark 20%Pt/C.

关键词： Self-catalyzed process Fe/N/F-tridoped carbon nanotube Electrocatalyst Oxygen reduction reaction Zn-air battery

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Rational design of PrBaFe_(2)O_(6-δ)-based cathodes for protonic ceramic fuel cells

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Journal of Advanced Ceramics 2024年第10期13卷 1600-1610页

作者： Yanru Yin Shiqi Zhang Ao Wang Dong Yan Jian Li Lichao Jia School of Materials Science and Engineering State Key Laboratory of Materials Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan 430074China Wuhan Institute of Marine Electric Propulsion Wuhan 430064China

Obtaining high-performance cathodes is critical for protonic ceramic fuel cells(PCFCs),as cathode performance significantly impacts fuel cell performance.A full understanding of the interactions among the diverse properties of cathode materials would benefit cathode *** this study,PrBaFe_(2)O_(6-δ)(PBF)was doped with various dopants,including cobalt(Co),Ni,Cu,Zn,and *** and first-principles calculations are used to study the key properties of dopant-modified PrBaFe_(2)O_(6-δ),including oxygen vacancy(VO)creation,hydration ability,proton mobility,and oxygen reduction reaction(ORR)*** is no perfect dopant that can improve every property to its full ***,different dopants can impact different properties of the ***-dopant has the best cathode performance since it balances the material’s instinctive properties,even though it does not provide a significant advantage in the formation of *** utilizing Co-doped PrBaFe_(2)O_(6-δ)cathode has a high performance of 1680 mW·cm^(-2) at 700℃,which is greater than that of the other dopant-tailored PrBaFe_(2)O_(6-δ)cathodes reported in this study and is one of the largest ever recorded for PrBaFe_(2)O_(6-δ)-based cathodes for ***-doped PrBaFe_(2)O_(6-δ)cathode is further demonstrated to be robust,with excellent operational *** study not only provides a potential cathode candidate for PCFCs but also suggests an intriguing approach to cathode design by carefully examining and balancing different vital properties of the material.

关键词： cathode rational design high performance protonic ceramic fuel cells(PCFCs)

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Oxygen vacancies-rich TiO_(2-x) enhanced composite polyurethane electrolytes for high-voltage solid-state lithium metal batteries

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Nano Research 2025年第4期18卷 228-237页

作者： Xiaoning Xu Fei Pei Wenjie Lin Jia Lei Yuhan Yang Henghui Xu Zhen Li Yunhui Huang State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Dongfeng Motor Corporation Research&Development Institute Wuhan 430058China

Due to the favorable interfacial stability with electrodes,excellent processability,and reasonable material cost,organic-inorganic composite solid-state electrolytes have attracted broad interests in the field of solid-state *** this study,we have developed a solid-state composite electrolyte with polyurethane(PU)as polymer matrix and TiO_(2-x) as nanofiller(denoted as PUL-TiO_(2-x)).The block copolymer PU features alternating soft and hard segments,which offers distinct advantages due to its unique structural *** soft segment of the block copolymer facilitates the dissociation of lithium salt,enabling the conduction of Li^(+),while the rich hydrogen bond network formed by the hard segment ensures the mechanical strength of the *** profusion of Lewis acid sites on the TiO_(2-x) surface facilitates interactions with ether oxygen groups and bistrifluoromethanesulfonimide(TFSI-)anions,thereby enhancing ionic conductivity(σ)and expanding the electrochemical stability window of the ***,the PUL-TiO_(2-x) electrolyte exhibits an impressiveσof 2.19×10^(-4) S·cm^(-1) at 40℃,a Li^(+)transference number of 0.47,and an electrochemical stability window of 4.98 *** resulting LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)||Li battery demonstrates a specific capacity of 171 mAh·g^(-1) and exhibits excellent cycling stability,maintaining its performance over 270 cycles at 40℃.These findings underscore the immense potential of the PUL-TiO_(2-x) in advancing the development of high-performance all-solid-state lithium batteries.

关键词： polyurethane electrolyte composite polymer electrolytes high-voltage cathodes solid-state lithium metal batteries

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The roadmap of two-dimensional materials toward next-generation image sensor

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National Science Review 2024年第12期11卷 73-75页

作者： Na Zhang Decai Ouyang Yuan Li Tianyou Zhai State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology

With the rapid development of visual information technology, image sensors are increasingly required to meet complex demands, including higher sensitivity,wider detection band, high-density integration, flexibility, and intelligent functionality [1]. However, conventional image sensors still suffer from inherent limitations, such as poor photoelectric sensitivity, narrow detection bands, and lack of multifunctionality,which significantly limit their capabilities in cutting-edge applications.

关键词： roadmap sensor image materials next-generation toward two-dimensional

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High-Superelasticity NiTi Shape Memory Alloy by Directed Energy Deposition-Arc and Solution Heat Treatment

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 132-144页

作者： Junyi Ma Lin Yu Qing Yang Jie Liu Lei Yang State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430070China School of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan430074China

Directed energy deposition-arc(DED-Arc)technology has the advantages of simple equipment,low manufacturing cost and high deposition rate,while the use of DED-Arc has problems of microstructure inhomogeneity,position dependence of macroscopic mechanical properties and ***,it is necessary to carry out a subsequent heat treatment to improve its microstructure uniformity,mechanical properties and *** this investigation,the DED-Arc 15-layer NiTi alloy thin-walled parts with the solution treatment at different process parameters were studied to analyze the effects of solution heat treatment on microstructure,phase composition,phase transformation,microhardness,tensile and *** temperature range of solution treatment is 800-1050℃,and the treatment time range is 1-5.5 *** results show that after solution treatment at 800℃/1 h,the content of precipitated phase decreases,the grain is refined,the microhardness increases,and the mechanical properties in the 0°direction are *** strain recovery rate after 10 tensile cycles has increased from 37.13%(as-built)to 49.25%(solid solution treatment).This research provides an effective post treatment method for high-performance DED-Arc NiTi shape memory alloys.

关键词： Directed energy deposition-arc(DED-Arc) Cold metal transfer(CMT) NiTi shape memory alloys Microstructure Phase transformation Solution heat treatment

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