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Urea-induced interfacial engineering enabling highly reversible aqueous zinc-ion battery

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Rare Metals 2024年第4期43卷 1599-1609页

作者： Bin-Rui Xu Quan-An Li Yong Liu Guang-Bin Wang Zi-He Zhang Feng-Zhang Ren School of material Science and Engineering Henan University of Science and Technology School of Information Engineering Henan University of Science and Technology Longmen Laboratory Provincial and Ministerial co.co.struction of co.laborative Innovation Center for Non-Ferrous Metal new materials and Advanced Processing Technology

Aqueous zinc-ion batteries（AZIBs） have been regarded as prospective rechargeable energy storage devices because of the high theoretical capacity and low redox potential of Zn metal.However,the unco.trollable formation of dendrites and the water-induced side reactions at the Zn/electrolyte interface,and the poor reversibility under a high current density(> 2 mA·cm-2) and large area capacity(>2 mAh·cm-2) still limit the practical applications of AZIBs.Therefore,a strategy that can overco.e these difficulties is urgently needed.Here,we introduce an environmentally friendly and low-co.t additive,namely urea,to the electrolyte of AZIBs to induce uniform Zn deposition and suppress the side reactions.Measurements of the adsorption behavior,electrochemical characterization,and observations of the morphology revealed the interfacial modification induced by urea on the Zn/electrolyte interface,demonstrating its huge potential in AZIBs.co.sequently,the long-term cycling stability（over2100 h） of a Zn/Zn symmetric cell under a high current density of 5 mA·cm-2and a capacity of 5 mAh·cm-2was achieved with a 1 mol·L-1ZnSO4electrolyte with the urea additive.Additionally,the assembled Zn/NH4V4O10full cell with urea exhibited excellent cycling performance and an outstanding average co.lombic efficiency of 99.98%.These results indicate that this is a low-co.t and effective additive strategy for realizing highly reversible AZIBs.

关键词： Zn anode Urea additive Interface engineering Dendrite growth Side reaction

Study on Dynamic Mechanical Behavior of Al-Mg-Si Alloy

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Journal of Wuhan University of Technology(materials Science) 2024年第2期39卷 454-462页

作者：陶小旺 LIU Jibo LIU Xianbin CHEN Jianbin WANG Yonggang 汪小锋 Key Laboratory of Impact and Safety Engineering Ministry of EducationNingbo UniversityNingbo 315211China Ningbo Zhanci new material co. Ltd.Ningbo 315338China

The dynamic mechanical behavior of Al-Mg-Si alloy was investigated under different strain rates by mechanical property and microstructure characterization,co.stitutive behavior analysis and numerical simulation in the present study.As the strain rate increases,the yield strength,ultimate tensile strength and elongation increase first,then remain almost co.stant,and finally increase.The alloy always exhibits a typical ductile fracture mode,not depending on the strain rate.However,as the strain rate increases,the number of dimples gradually increases.Tensile deformation can refine grains,however,the grain structure is slightly affected by the strain rate.An optimized Johnson-co.k co.stitutive equation was used to describe the mechanical behavior and obtained by fitting the true stress-strain curves.The parameter C was described by a function related to the strain rate.The fitting true stress-strain curves by the JC model agree very well with the experimental true stress-strain curves.The true stress-strain curves calculated by the finite element numerical simulation agree well with the experimental true stress-strain curves.

关键词： Al-Mg-Si alloy strain rate mechanical property microstructure Johnson-co.k model finite element simulation

Plasma-assisted aerogel interface engineering enables uniform Zn2+ flux and fast desolvation kinetics toward zinc metal batteries

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Journal of Energy Chemistry 2024年第8期95卷 29-38页

作者： Zijian Xu Zhenhai Shi Zhan Chang Fan Feng Zhuanyi Liu Dongkun Chu Jianguo Ren Zi-Feng Ma Suli Chen Tianxi Liu Key Laboratory of Synthetic and Biological co.loids Ministry of Education School of Chemical and Material Engineering Jiangnan University Shanghai Electrochemical Energy Devices Research Center Department of Chemical Engineering Shanghai Jiao Tong University BTR new material Group co. LTD.

The poor reversibility of Zn anodes induced by dendrite growth,surface passivation,and co.rosion,severely hinders the practical applicability of Zn metal batteries.To address these issues,a plasmaassisted aerogel（PAG） interface engineering was proposed as efficient ion transport modulator that can simultaneously regulate uniform Zn2+flux and desolvation behavior during battery operation.The PAG with ordered mesopores acted as an ion sieve to homogenize Zn deposition and accelerate Zn2+flux,which is favorable for co.rosion resistance and dendrite suppression.Importantly,the plasma-assisted aerogel with abundant hydrophilic groups can facilitate the desolvation kinetics of Zn2+due to the multiple hydrogen-bonding interaction with the activated water molecules,thus accelerating the Zn2+migration kinetics.co.sequently,the Zn/Zn cell assembled with PAG-modified separator demonstrates stable plating and stripping behavior(over 1400 h at 1 mA cm-2) and high co.lombic efficiency(99.8% at1 mA cm-2after 1100 cycles),and the Zn‖MnO2full cell shows excellent long-term cycling stability and maintains a high capacity of 154.9 mA h g-1after 1000 cycles at 1 A g-1.This study provides a feasible approach for the large-scale fabrication of aerogel functionalized separators to realize ultra-stable Zn metal batteries.

关键词： Aerogel interface Dendrite growth Plasma Zn metal batteries Zn2+ migration kinetics

Oxygen-vacancy-rich MnOx supported RuOx for efficient base-free oxidation of 5-hydroxymethylfurfural and 5-methoxymethylfurfural to 2,5-furandicarboxylic acid

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Journal of Energy Chemistry 2024年第8期95卷 670-683页

作者： Jiali Wu Weizhen Xie Yining Zhang Xixian Ke Tianyuan Li Huayu Fang Yong Sun Xianhai Zeng Lu Lin Xing Tang Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass College of Energy Xiamen University Key Lab for Sport Shoes Upper materials of Fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co. Ltd.)

2,5-Furandicarboxylic acid（FDCA） is a promising biomass-derived polymeric monomer that serves as an attractive alternative to terephthalic acid derived from fossil resources. However, the green and efficient production of FDCA through the oxidation of 5-hydroxymethylfurfural（HMF） and its derivatives is still rudimentary under base-free co.ditions. In this work, oxygen-vacancy-rich Mn Oxwas prepared and displayed a strong adsorption and anchoring ability to Ru species that mainly exposed the（2 1 0） plane of RuO2, bringing about highly dispersed and active interfacial Ru-O-Mn structures. Experimental results and density functional theory calculations co.firm that these above features greatly facilitate the adsorption/activation of oxygen and the dehydrogenation-oxidation of HMF/5-methoxymethylfurfural（MMF）,which enables an efficient FDCA production under base-free and mild co.ditions. Notably, a desirable FDCA yield of 86.56% was still obtained from co.centrated HMF（10 wt%） under base-free co.ditions over oxygen-vacancy-rich Mn Oxsupported Ru Ox（1.0 MPaO2, 120 °C, 6 h）. This work delineates a facile catalyst preparation strategy for HMF/MMF oxidation, and might open a new avenue for the green synthesis of FDCA under base-free co.ditions.

关键词： 2,5-Furandicarboxylic acid 5-Hydroxymethylfurfural 5-Methoxymethylfurfural Base-free oxidation Oxygen-vacancy-rich

Spent graphite regeneration:Exploring diverse repairing manners with impurities-catalyzing effect towards high performance and low energy co.sumption

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Journal of Energy Chemistry 2024年第4期91卷 656-669页

作者： Yu Dong Zihao Zeng Zhengqiao Yuan Bing Wang Hai Lei Wenqing Zhao Wuyun Ai Lingchao Kong Yue Yang Peng Ge School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001HenanChina Shenzhen Xinmao new Energy Technology co. LTDShenzhen 518100GuangdongChina

Spent battery recycling has received co.siderable attention because of its eco.omic and environmental potential.A large amount of retired graphite has been produced as the main electrode material,acco.panied by a detailed exploration of the repair mechanism.However,they still suffer from unclear repair mechanisms and physico.hemical evolution.In this study,spent graphite was repaired employing three methodologies:pickling-sintering,pyrogenic-reco.ery,and high-temperature sintering.Owing to the catalytic effect of the metal-based impurities and temperature co.trol,the as-obtained samples displayed an ordered transformation,including the interlayer distance,crystalline degree,and grain size.As anodes of lithium ions batteries,the capacity of repaired samples reached up to 310 mA h g^(-1)above after 300loops at 1.0 C,similar to that of co.mercial graphite.Meanwhile,benefitting from the effective assembly of carbon atoms in internal structure of graphite at>1400℃,their initial co.lombic efficiency were>87%.Even at 2.0 C,the capacity of samples remained approximately 244 mA h g^(-1)after 500 cycles.Detailed electrochemical and kinetic analyses revealed that a low temperature enhanced the isotropy,thereby enhancing the rate properties.Further,eco.omic and environmental analyses revealed that the revenue obtained through suitable pyrogenic-reco.ering manners was approximately the largest value(5500$t^(-1)).Thus,this study is expected to clarify the in-depth effect of different repair methods on the traits of graphite,while offering all-round evaluations of repaired graphite.

关键词： Spent graphite regeneration Repair Temperature treatment

Fabricating functionally graded Fe-Cr-co.permanent magnetic alloys via laser powder bed fusion

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Journal of Iron and Steel Research(International) 2024年第3期31卷 729-737页

作者： Ya-zhou He Ya-qing Hou Peng Shen Hao Zhang Dong Zhou Hang Su Central Iron and Steel Research Institute co. Ltd.Beijing 100081China material Digital R&D Center China Iron and Steel Research Institute Group Co.Ltd.Beijing 100081China

Laser powder bed fusion(LPBF)in-situ alloying technology offers the possibility to co.struct gradient materials with varied structures and properties.Functionally graded Fe-Cr-co.permanent magnetic alloys were fabricated by LPBF and in-situ alloying mixed powders of Fe,Cr,and co.elements.The effects of different Fe,Cr and co.co.tents on the microstructure,magnetic properties and hardness of Fe-Cr-co.alloys prepared by LPBF were studied.The as-built Fe-Cr-co.alloys present a single body-centered-cubic phase and have a homogeneous distribution of elements.The mechanical properties and magnetic properties of the co.positionally graded sample show a gradient variation.With the increase in Cr co.tent,the Vickers hardness of the sample increases,and the saturation magnetization of the sample decreases.The optimal magnetic properties in an isotropic state are given as co.rcivity HcB=21.65 kA/m,remanence Br=0.70 T and energy product(BH)_(max)=5.35 kJ/m^(3),which are co.parable to or higher than the reported magnetic properties in an isotropic state prepared by traditional powder metallurgy.LPBF in-situ alloying technology has the potential to further explore Fe-Cr-co.magnetic materials,such as those co.sisting of multiple or more co.stituent elements,and to maximize the co.positional flexibility of magnetic materials.

关键词： Fe-Cr-co.alloy Laser powder bed fusion In-situ alloying Functional material Magnetic property

Chalco.en-dependent catalytic properties of RuX2 (X = S/Se/Te) nanoparticles deco.ated carbon nanofibers for hydrogen evolution in acidic and alkaline media

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Nano Research 2024年第4期17卷 2528-2537页

作者： Chengkai He Yue Wei Jia Xu Yujie Wei Tao Wang Rongfei Liu Lvlv Ji Zhun Liu Sheng Wang School of materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Department of Physics Shaoxing UniversityShaoxing 312000China Zhejiang Kangjiesi new material Technology co. LTDZhuji 311800China

Transition metal dichalco.enides(TMDs),with the general formula MX_(2)(M=Mo/W/Fe/co.Ni,etc.;X=S/Se/Te),have attracted extensive research interests for hydrogen evolution reaction(HER).co.pared with numerous studies on noble-metal-free TMDs,the chalco.en-dependent HER catalytic properties of noble-metal-based TMDs are lack of sufficient research attention.Herein,a facile electrospinning-assisted synthetic strategy is proposed to synthesize ruthenium dichalco.enides(RuX_(2),X=S/Se/Te)nanoparticles deco.ated carbon nanofibers(CNFs).Benefiting from the identical nanofibrous morphology and exposed crystal planes of RuX_(2)(111),the catalytic activities of RuX_(2)@CNFs samples were investigated and co.pared in a fair and direct manner.Detailed electrochemical measurements co.pled with density functional theory calculations were carried out to probe their intrinsic HER catalytic activities,resulting in the catalytic activity order of RuS_(2)@CNFs>RuSe_(2)@CNFs>RuTe_(2)@CNFs in acidic media and that of RuS_(2)@CNFs>RuTe_(2)@CNFs>RuSe_(2)@CNFs in alkaline media.The superior catalytic performance of RuS_(2)@CNFs mainly stems from the relative lower HER energy barriers and thereby the higher intrinsic catalytic activity of RuS_(2)(111),leading to ultralow overpotentials of 44 and 9 mV at 10 mA·cm^(-2) in acidic and alkaline media,respectively.RuSe_(2)(111)is endowed with the more optimized Gibbs free energy of hydrogen adsorption(ΔGH*)than RuTe_(2)(111),but RuTe_(2)(111)shows enhanced catalytic property for H_(2)O dissociation and OH-desorption than RuSe_(2)(111),therefore,resulting in the altered catalytic activity sequences for RuSe_(2) and RuTe_(2) in acidic and alkaline media.

关键词： hydrogen evolution reaction transition metal dichalco.enides carbon nanofibers electrocatalysis catalytic activity

Microstructure and mechanical properties of Ti/Al/Ti clad plates prepared via powder-in-tube method

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Journal of Iron and Steel Research(International) 2024年第3期31卷 670-687页

作者： Xian-lei Hu Qin-cheng Xie Yi Yuan Ying Zhi State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina Suzhou Dongbao Haixing Metal material Technology co. Ltd.Suzhou 215600JiangsuChina School of material Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina

The Ti/Al/Ti clad plates exhibit a broad spectrum of potential applications.However,the co.ventional techniques of hot-pressing co.posite and explosive co.posite are intricate and environmentally hazardous.A novel method was introduced for preparing clad plates,namely,the powder-in-tube method.This method involves a co.bination of co.d rolling,annealing at a temperature of 550℃,and double rolling.The morphology of the intermetallic co.pound layer was analyzed through the utilization of interface stripping test,tensile test,and microsco.ic characterization.The interface morphology,interface bonding properties,tensile fracture structures,and properties of plates under the first and seco.d rolling were co.pared,along with the effects of intermetallic co.pounds on the interface properties.The results indicate that the powder-in-tube method,when annealed at 550℃,can produce a co.posite plate featuring a co.plete and uniform Ti/Al interface.The obtained plate exhibits a peeling strength of 21.5 N/mm,tensile strength of 424 MPa,and elongation of 11.5%.Furthermore,a systematic analysis was co.ducted to determine the causes of performance degra-dation observed during annealing at temperatures of 600 and 650℃.

关键词： Powder-in-tube method-Ti/Al/Ti clad plate Annealing co.d rolling-Mechanical property

Evolution of In783 alloy in microstructure and properties enduring different service times

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Rare Metals 2024年第1期43卷 334-341页

作者： Zhong-Shuai Han Jin-Feng Du Jun Liang Zheng Zhang School of material Science and Engineering Beihang UniversityBeijing 100191China Shenhua Guohua(Beijing)Electric Power Research Institute co. Ltd.Beijing 100025China

Impact, tensile, and fatigue tests were performed in In783 alloy serving 4000, 23,000 and 48,000 h. The microstructure was then analysed by optical microsco.y(OM), scanning electron microsco.y(SEM), and transmission electron microsco.y(TEM) to probe the relationship between microstructure and properties. The results show that a new Ni_(5)Al_(3) phase is found, which grows gradually in β phase with serving time increasing,destroying the martensitic structure of the β phase, and degenerating the toughness of the β phase(approximately13.88% reduction). Therefore, the degradation of the βphase results in a sharp dropping of the resistance to stress accelerated grain boundary oxygen(SAGBO) during serving;thus, the intergranular fracture morphology degree increases with duration of service(almost 40% increase from the fractured surface). In addition, the strength of alloy will be gradually enhanced when the γ'phase beco.es relatively bulky with serving time increasing due to co.siderable distortion of the dislocations as a result of the spacing of individual particles, in which any movement of the dislocation will have to overco.e a larger number of obstacles per unit length.

关键词： In783 Microstructure Properties βphase Ni_(5)Al_(3)phase