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Full-Scaling Friction and Wear Laws of Nanotwinned Metals

Physical Review Letters 2025年第16期134卷 166201-166201页

作者： Yan Lin Ziyue Zhang Fenghui Duan Fangming Wang Fei Liang Qicheng Zhang Yong Li Jie Pan Keke Chang Yonghao Zhao Yuntian Zhu Xiang Chen Nano and Heterogeneous Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing China Department of Materials Science and Engineering City University of Hong Kong Hong Kong China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo China State Key Laboratory of Material Processing and Die and Mould Technology and School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan China School of Materials Science and Engineering Hohai University Changzhou China

Ultrastrong nanotwinned (NT) metals hold promise for mitigating friction and wear—essential for enhancing the energy efficiency and longevity of all moving systems. However, optimizing their tribological performance has long suffered from the absence of friction and wear laws across varying tribological loading scales. Here, we have discovered full-scaling twin lamella spacing (λ)-dependent friction and wear laws in NT pure nickel and identified critical deformation mechanisms for reducing friction and wear. Nanoscale friction initially increases with decreasing λ, peaking at 20 nm, and then decreases due to a transition from dislocation-twin boundary interactions to detwinning. Under microscale loading, friction and wear reduce linearly with decreasing λ, attributed to an unforeseen phase transition from face-centered cubic to hexagonal close-packed structures. Furthermore, under macroscale loading, the formation of a durable oxide layer and a stable gradient nanostructure in nanotwinned nickel with λ exceeding 20 nm aids in mitigating wear loss.

关键词： Nickel

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Interwoven scaffolded porous titanium oxide nanocubes/carbon nanotubes framework for high-performance sodium-ion battery

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Journal of Energy Chemistry 2021年第8期30卷 38-46,I0002页

作者： Wen-Bei Yu Wen-Da Dong Chao-Fan Li Nasiruddin Macadam Jiu-Xiang Yang Guo-Bin Zhang Zhi-Yi Hu Tien-Chun Wu Yu Li Tawfique Hasan Li-Hua Chen Li-Qiang Mai Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Cambridge Graphene Centre University of Cambridge9 JJ Thomson AvenueCB30FA CambridgeUnited Kingdom Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of Namur61 rue de Bruxelles5000 NamurBelgium

Supercapacitor-like Na-ion batteries have attracted much attention due to the high energy density of batteries and power density of *** dioxide(TiO_(2)),is a promising anode *** performance is however seriously hindered by its low electrical conductivity and the sluggish diffusion of sodium ions(Na^(+))in the TiO_(2)***,this work combines porous TiO_(2)nanocubes with carbon nanotubes(CNTs)to enhance the electrical conductivity and accelerate Na^(+)diffusivity for Na-ion batteries(NIBs).In this composite,an interwoven scaffolded TiO_(2)/CNTs framework is formed to provide abundant channels and shorter diffusion pathways for electrons and *** in-situ X-ray diffraction and cyclic voltammetry confirm the low strain and superior transport kinetics in Na^(+)intercalation/extraction *** addition,the chemically bonded TiO_(2)/CNTs hybrid provides a more feasible channel for Na^(+)insertion/extraction with a much lower energy ***,the TiO_(2)/CNTs composite exhibits excellent electrochemical performance with a capacity of 223.4 m Ah g^(-1)at 1 C and a capacity of 142.8 m Ah g^(-1)at 10 C(3.35 A g^(-1)).The work here reveals that the combination of active materials with CNTs can largely improve the utilization efficiency and enhance their sodium storage.

关键词： Supercapacitor-like Interwoven scaffold Na-ion battery TiO_(2) Carbon nanotubes

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A Novel Dual‑Channel Carbon Nitride Homojunction with Nanofibrous Carbon for Significantly Boosting Photocatalytic Hydrogen Peroxide Production

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advanced Fiber materials 2024年第2期6卷 387-400页

作者： Jianwen Zhou Tianshang Shan Fengshan Zhang Bruno Boury Liulian Huang Yingkui Yang Guangfu Liao He Xiao Lihui Chen College of Material Engineering Fujian Agriculture and Forestry UniversityFuzhou 350108FujianChina State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640GuangdongChina Laboratory for Comprehensive Utilization of Paper Waste of Shandong Province Shandong Huatai Paper Co.Ltd.Dongying 257335China ICGM University of MontpellierCNRSENSCM34000 MontpellierFrance State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China

Photocatalytic H_(2)O_(2)synthesis(PHS)via graphite carbon nitride(g-C_(3)N_(4))is a low-carbon and environmentally friendly approach,which has garnered tremendous ***,as for the pristine g-C_(3)N_(4),the PHS is severely constrained by the slow transfer and rapid recombination of photogenerated ***,we introduced cellulose-derived carbon nanofib-ers(CF)into the homojunction of g-C_(3)N_(4)nanotubes(MCN)and g-C_(3)N_(4)nanosheets(SCN).A series of photocatalytic results demonstrate that the embedding of cellulose-derived carbon for MCN/SCN/CF composite catalyst significantly improved the photocatalytic H_(2)O_(2)generation(136.9μmol·L^(-1)·h^(-1))with 5-holds higher than that of individual MCN(27.5μmol·L^(-1)·h^(-1))without any sacrificial *** enhancement can be attributed to the combined effects of the two-step one-electron oxy-gen reduction reaction(ORR)on conduction band(CB)side and the water oxidation reaction(WOR)on valence band(VB)side.A comprehensive characterization of the mechanism indicates that CF enhances the absorption of light,promotes the separation and migration of photogenerated carriers,and regulates the position of the valence and conduction bands with an effective dual-channel ORR pathway for photo-synthesis of H_(2)O_(2).This work provides valuable insights into utilizing biomass-based materials for significantly boosting photocatalytic H_(2)O_(2)production.

关键词： Carbon nitride Homojunction Nanofibrous carbon Photocatalytic H_(2)O_(2)production

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Thermoelectric Properties of n-type Full-Heusler Fe_(2-2x)Co_(2x) TiSn Prepared by an Ultra-fast synthesis Process

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Journal of Wuhan University of technology(materials Science) 2021年第4期36卷 497-504页

作者： ZHAO Dongyan CHEN Yanning WANG Yubo ZHANG Haifeng FU Zhen WANG Shuaipeng YU Wen DU Jian WANG Wenhe QIU Junhao YAN Yonggao Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co.Ltd.Beijing 100192China Beijing Chip Identification Technology Co. Ltd.Beijing102200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Full-Heusler alloy Fe_(2)TiSn was predicted to be a potential thermoelectric material with high mechanical properties and ***_(2)TiSn was usually prepared by arc-melting followed by annealing for 2 weeks,which takes a long time and consumes a large amount of *** this paper,Fe_(2)TiSn was prepared by an ultra-fast method,self-propagating high-temperature synthesis (SHS) combined with spark plasma *** bulk materials with uniform element distribution,well controlled composition and relative densities of over 97.5% were *** undoped Fe_(2)TiSn samples show p-type transport *** was heavily doped at the Fe site to prepare n-type Fe_(2-2x)Co_(2x) TiSn *** thermoelectric properties measurements carried out on the Co-doped samples show a highest ZT=0.02 at 300 K,which is about tripe the performance of the pristine Fe_(2)*** study provides a new approach for the rapid and low-cost preparation of full-Heusler thermoelectric materials.

关键词： thermoelectric full-Heusler Fe2TiSn SHS thermoelectric properties

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Application of novel nanobubble-contained electrolyzed catalytic water to cleanup petroleum-hydrocarbon contaminated soils and groundwater: A pilot-scale and performance evaluation study

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Journal of Environmental Management 2023年 347卷 119058页

作者： Ho, Wing-Sze Lin, Wei-Han Verpoort, Francis Hong, Kun-Liang Ou, Jiun-Hau Kao, Chih-Ming Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Suzhou Dingdedian Environmental Protection Technology Co. Ltd. Suzhou China

Soil and groundwater contamination caused by petroleum hydrocarbons is a severe environmental problem. In this study, a novel electrolyzed catalytic system (ECS) was developed to produce nanobubble-contained electrolyzed catalytic (NEC) water for the remediation of petroleum-hydrocarbon-contaminated soils and groundwater. The developed ECS applied high voltage (220 V) with direct current, and titanium electrodes coated with iridium dioxide were used in the system. The developed ECS prototype contained 21 electrode pairs (with a current density of 20 mA/cm2), which were connected in series to significantly enhance the hydroxyl radical production rate. Iron-copper hybrid oxide catalysts were laid between each electrode pair to improve the radical generation efficiency. The electron paramagnetic resonance (EPR) and Rhodamine B (RhB) methods were applied for the generated radical species and concentration determination. During the operation of the ECS, high concentrations of nanobubbles (nanobubble density = 3.7 × 109 particles/mL) were produced due to the occurrence of the cavitation mechanism. Because of the negative zeta potential and nano-scale characteristics of nanobubbles (mean diameter = 28 nm), the repelling force would prevent the occurrence of bubble aggregations and extend their lifetime in NEC water. The radicals produced after the bursting of the nanobubbles would be beneficial for the increase of the radical concentration and subsequent petroleum hydrocarbon oxidation. The highly oxidized NEC water (oxidation-reduction potential = 887 mV) could be produced with a radical concentration of 9.5 × 10−9 M. In the pilot-scale study, the prototype system was applied to clean up petroleum-hydrocarbon polluted soils at a diesel-oil spill site via an on-site slurry-phase soil washing process. The total petroleum hydrocarbon (TPH)-contaminated soils were excavated and treated with the NEC water in a slurry-phase reactor. Results show that up to 74.4% of TPH (initial

关键词： Soils

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Magneto-enhanced electro-thermal conversion performance

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Science China materials 2021年第11期64卷 2835-2845页

作者： Shifang Ma Cuncheng Li Wenjun Cui Xiahan Sang Ping Wei Wanting Zhu Xiaolei Nie Fu-Hua Sun Wenyu Zhao Qingjie Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528000China Nanostructure Research Center Wuhan University of TechnologyWuhan 430070China

Synergistically regulating carrier and phonon transport on the nanoscale is extremely difficult for all thermoelectric(TE)materials without cage *** BaFe_(12)O_(19)/Bi_(2)Te_(2.5)Se_(0.5)thermoelectromagnetic nanocomposites are designed and synthesized as a benchmarking example to simultaneously tailor the transport properties on the nanoscale.A magneto-trapped carrier effect induced by BaFe_(12)O_(19)hard-magnetic nanoparticles(NPs)is discovered,which can lower the carrier concentration of n-type Bi_(2)Te_(2.5)Se_(0.5)matrix by 16%,and increase the Seebeck coefficient by 16%.Meanwhile,BaFe_(12)O_(19)NPs provide phonon scattering centers and reduce the thermal conductivity by 12%.As a result,the ZT value of the nanocomposites is enhanced by more than 25%in the range of 300-450 K,and the cooling temperature difference increases by 65%near room *** work greatly broadens the commercial application potential of ntype Bi_(2)Te_(2.5)Se_(0.5),and demonstrates magneto-trapped carrier effect as a universal strategy to enhance the electro-thermal conversion performance of TE materials with high carrier concentration.

关键词： thermoelectromagnetic nanocomposite thermoelectric material magnetic nanoparticles magneto-trapped carrier effect electro-thermal conversion performance

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A new catalyst for urea oxidation: NiCo2S4 nanowires modified 3D carbon sponge

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Journal of Energy Chemistry 2020年第11期29卷 195-205页

作者： Biaopeng Li Congying Song Jianjun Rong Jing Zhao Hong-En Wang Ping Yang Ke Ye Kui Cheng Kai Zhu Jun Yan Dianxue Cao Guiling Wang Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Urea oxidation is a significant reaction for utilizing urea-rich wastewater or human urine as sustainable power sources which can ease the water eutrophication while generate electricity. A direct urea-hydrogen peroxide fuel cell is a new kind of fuel cell employing urea as fuel and hydrogen peroxide as oxidant which possesses a larger cell voltage. Herein, this work tries to promote the kinetics process of urea oxidation by preparing low-cost and high-efficient NiCo2S4 nanowires modified carbon sponge electrode. The carbon sponge used in this work with a similar three-dimensional multi-channel structure to Ni foam, is prepared by carbonizing recycled polyurethane sponge which is also a process of recycling waste. The performance of the prepared catalyst in an alkaline solution is investigated in a three-electrode *** the introduction of Co element to the catalyst, a reduced initial urea oxidation potential and a high performance are obtained. Furthermore, a direct urea-hydrogen peroxide fuel cell is assembled using the NiCo2S4 nanowires modified carbon sponge anode. Results indicate that the prepared catalyst provides a chance to solve the current problems that hinder the development of urea electrooxidation(high initial urea oxidation potential, low performance, and high electrode costs).

关键词： Carbon sponge Direct urea fuel cell Electrocatalyst NiCo2S4 nanowires Urea oxidation

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Low-Pt Anodes with Gradient Molybdenum Isomorphism for High Performance and Anti-Co Poisoning Pemfcs

SSRN

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SSRN 2023年

作者： Jin, Changqing Liao, Yucong Zhang, Aojie Zhao, Shengqiu Wang, Rui Li, Junsheng Tang, Haolin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan528200 China School of Chemistry Chemical Engineering and life Sciences Wuhan University of Technology Wuhan430070 China

The development of low Pt-loading hydrogen oxidation reaction electrocatalysts with high catalytic activity, high durability, and resistance to CO poisoning is essential for the commercialization of proton exchange membrane fuel cells. Herein, two kinds of low Pt-loading HOR catalysts, PtMo1/KB with the synergistic effect of PtMo alloy particles (APs), Pt single atoms (SAs) and Mo SAs and PtMo10/KB with the synergistic effect of PtMo atomic clusters (ACs), Pt SAs and Mo SAs, were fabricated. Electrochemical tests show that PtMo1/KB (1.85 wt.% Pt) exhibits extraordinary HOR activity and durability, with mass activity in electrochemical cells and even in PEMFCs that are 8.36 times and 2.71 times higher than that of commercial Pt/C, respectively. In addition, PtMo10/KB (1.56 wt.% Pt) was tested in electrochemical cells and PEMFCs in H2/1000 ppm CO and its resistance to CO poisoning was superior to that of commercial Pt/C. DFT calculations showed that the adsorption energy of the intermediates H* and CO was optimized by tuning the d-band center of Pt, thus enhancing the HOR activity and CO tolerance of the catalyst. Meanwhile, in situ CO-adsorption surface-enhanced infrared adsorption spectroscopy also confirmed that the weakening of the Pt-CO bond strength and the adsorption energy of CO contributed to the improvement of CO tolerance in PtMo10/KB. © 2023, The Authors. All rights reserved.

关键词： Electrocatalysis

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advanced Li-SexSy battery system:Electrodes and electrolytes

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Journal of materials Science & technology 2020年第20期52卷 1-15页

作者： Huan Du Shihao Feng Wen Luo Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Department of Physics School of ScienceWuhan University of TechnologyWuhan430070China

The worldwide energy shortage has led to numerous researches for the exploration of new-type battery materials to deal with the energy *** achieve a great leap in energy density,the study of high capacity electrode materials plays a major *** a replacement to the energy accumulation system of lithium-sulfur(Li-S) and lithium-selenium(Li-Se) batteries,great concern is generated over lithium/selenium-sulfur(Li-SexSy) batteries as they combine the advantages of S(high capacity) and Se(improved electrical conductivity),consequently stands for extensive new cathode *** recent years,widespread researches have been conducted and great achievements have been *** review sums up the research status on Li-SexSy batteries and concentrates on the outstanding work of SexSy cathode *** reaction mechanism and capacity fading mechanism are *** performance-structure relationship is stated in regard of different cathode structures,including a variety of carbon hosts,conducting polymer hosts,transition metal-doped carbon electrodes and various Se/S *** compatibilities of frequently-used carbonate-based and ether-based electrolyte and other new-type electrolytes for Li-SexSy battery are *** for the future developments of Li-SexSy batteries are finally proposed.

关键词： Selenium-sulfur Cathode materials Electrolytes Lithium-sulfur

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3D-bioprinted vascular scaffold with tunable mechanical properties for simulating and promoting neo-vascularization

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Smart materials in Medicine 2022年 3卷 199-208页

作者： Zhou, Xin Gao, Qiang Yu, Dan Shao, Yichun Wang, Zhaohui Liu, Xiao Wang, Wenwu Chang, Likun Ma, Tianxiang Mok, Hsiaopei Cen, Jianzheng Chen, Jimei Tahchi, Mario El Zhuang, Jian Mou, Fangzhi Zhang, Jin Yin, Yixia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Cardiac Surgery Guangdong Cardiovascular Institute Guangdong Provincial People's Hospital Guangdong Academy of Medical Sciences Guangzhou510100 China Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education Beijing Advanced Innovation Centre for Biomedical Engineering School of Biological Science and Medical Engineering Beihang University Beijing100083 China LBMI Department of Physics Faculty of Sciences 2 Lebanese University P.O. Box 90656 Jdeidet Lebanon Qingyuan Innovation Laboratory College of Chemical Engineering Fuzhou University 2 Xueyuan Road Fuzhou350108 China

Alternative artificial vessels with tissue-matching mechanical and biological performance have been continuously taking great attention in bioengineering. However, it is challenging to take into account both mechanical and biological properties in formulating a hydrogel material. In the current study, a composite hydrogel ink based on geltain-methacryloyl (GelMA) and sodium alginate (SA) was prepared by a two-step polymerization process, and its fast shaping was realized by stabilizing the alginate fraction in calcium ion bath as well as the photo-crosslinking of GelMA. Mechanical properties of the transparent 3D printing GelMA/Gelatin/SA blood vessels were determined by testing their stretching and resilience performance. Based on Von Mise stress simulation using Ansys, strain of the artificial blood vessels reached 147% and the elastic Young's modulus reached approximately 224 kPa in the optimal hydrogel formulation, matching well with capability of enduring certain blood pressure encountered in real tissue. A selective and uniform permeability of hydrogel tubes was presented by using small molecules and human red blood cells, meanwhile excellent hemolysis, cell viability, and proliferation ability were also verified. Based on the results of in vitro assessment and the in vivo transplantation in SD rats, our proposed GelMA/Gelatin/SA vessels, with tissue-matching mechanical properties and their ideal biodegradation behavior, promoted neo-vascularization capacity and showed promising potential in producing an artificial blood vessel. © 2022 The Authors

关键词： Blood

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