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Encapsulating segment-like antimony nanorod in hollow carbon tube as long-lifespan,high-rate anodes for rechargeable K-ion batteries

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Nano Research 2019年第5期12卷 1025-1031页

作者： Wen Luo Feng Li Weiran Zhang Kang Han Jean-Jacques Gaumet Hans-Eckhardt Schaefer Liqiang Mai Department of Physics School of ScienceWuhan University of TechnologyWuhan 430070China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230000China Division of Materials Science and Engineering Boston UniversityMA 02215USA State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Technology Wuhan University of TechnologyWuhan 430070China Laboratoire de Chimie et Physique: Approche Multi-echelles des Milieux Complexes Institut Jean BarriolUniversite de LorraineMetz 57070France Institute for Functional Matter and Quantum Technologies Stuttgart UniversityPfaffenwaldring 57Stuttgart 70569Germany

K-ion battery (KIB) is a new-type energy storage device that possesses potential advantages of low-cost and abundant resource of *** develop advanced electrode materials for accommodating the large size and high activity of potassium ion is of great ***,a segment-like antimony (Sb) nanorod encapsulated in hollow carbon tube electrode material (Sb@HCT) was *** from the virtue of abundant nitrogen doping in carbon tube,one-dimensional and hollow structure advantages,Sb@HCT exhibits excellent potassium storage properties:in the case of potassium bis(fluorosulfonyl)imide (KFSI) electrolyte,Sb@HCT displays a reversible capacity of up to 453.4 mAh·g^-1 at a current density of 0.5 A·g^-1 and good rate performance (a capacity of 211.5 mAh·g^-1 could be achieved at an ultrahigh rate of 5 A·g^-1).Additionally,Sb@HCT demonstrates excellent long-cycle stability at a current density of 2 A·g^-1 over 120 ***,electrolyte optimization is an effective strategy for greatly improving electrochemical *** ex-situ characterizations,we disclosed the potassiation of Sb anode is quite reversible and undergoes multistep processes,combining solid solution reaction and two-phase reaction.

关键词： K-ion battery antimony anode hollow carbon tube encapsulation electrolyte optimizati on potassium storage mechanism

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Nanofibril Organization in Silk Fiber as Inspiration for Ductile and Damage-Tolerant Fiber Design

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advanced Fiber materials 2019年第3期1卷 231-240页

作者： Shihui Lin Chao Ye Wenwen Zhang Anchang Xu Shixian Chen Jing Ren Shengjie Ling School of Physical Science and Technology ShanghaiTech University393 Middle Huaxia RoadShanghai 201210China Jiangsu Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass‑Based Green Fuel and ChemicalsCollege of Chemical EngineeringNanjing Forestry UniversityNanjing 210037China State Key Laboratory of New Textile Materials and Advanced Processing Technology School of Textile Science and EngineeringWuhan Textile UniversityWuhan 430200China

Ductile and damage-tolerant fibers(DDTFs)are desired in aerospace engineering,mechanical engineering,and biomedical engineering because of their ability to prevent the catastrophic sudden structural/mechanical ***,in practice,design and fabrication of DDTFs remain a major challenge due to finite fiber size and limited processing *** this regard,animal silks can provide *** are hierarchically structured protein fibers with an elegant trade-off of mechanical strength,extensibility and damage tolerance,making them one of the toughest materials *** this article,we confirmed that nanofibril organization could improve the ductility and damage-tolerance of silk fibers through restricted fibril shearing,controlled slippage and *** by these strategies,we further established a rational strategy to produce polyamide DDTFs by combining electrospinning and yarn-spinning *** resultant polymeric DDTFs show a silk-like fracture resistance behavior,indicating potential applications in smart textile,biomedicine,and mechanical engineering.

关键词： Fiber Silk Mechanical property Damage tolerance Bioinspired materials

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Ultrafast synthesis of Nanoscale Metal Borides for Efficient Hydrogen Evolution

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Angewandte Chemie 2025年

作者： Dr. Tingting Liu Chen Chen Prof. Zonghua Pu Prof. Qiufeng Huang Jiadong Jiang Prof. Min Han Prof. Wei Chen Prof. Guangtao Yu Yuzhi Sun Dr. Shengyun Huang Prof. Qingjun Chen Prof. Abdullah M. Al-Enizi Prof. Ayman Nafady Xueqin Mu Prof. Shichun Mu Fujian Key Laboratory of Polymer Materials College of Chemistry and Materials Science Fujian Normal University Fuzhou Fujian 350117 P. R. China Fujian Cross Strait Institute of Flexible Electronics (Future Technology) Fujian Normal University Fuzhou Fujian 350117 P. R. China Ganjiang Innovation Academy Key Laboratory of Rare Earths Chinese Academy of Sciences Ganzhou 341000 P. R. China Department of Chemistry College of Science King Saud University Riyadh 11451 Saudi Arabia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China

Nanoscale metal borides, with exceptional physicochemical properties, have been attracted widespread attention. However, traditional synthesis methods of metal borides often lead to surface coking and large particle sizes. Herein, we have employed a flash Joule heating (FJH) technique to enable the ultrafast synthesis of metal boride nanomaterials. The synthesized materials encompass a wide range of diverse categories, including alkaline-earth metal borides (CaB 6 ), transition metal borides (TiB 2 , VB 2 , CrB 2 , MoB, MoB 2 , MnB 2 , MnB 4 , FeB, CoB, NiB), noble-metal borides (RuB 2 , RuB 1.1 ), and rare-earth metal borides (lab.6 , CeB 6 ). As an example, the RuB 2 demonstrates highly desirable electrocatalytic performance for all-pH hydrogen evolution reaction (HER). Especially, under the acidic condition, it exhibits an overpotential as low as 15 mV at a current density of 10 mA cm −2 , with a nearly 100 % faradic efficiency. Additionally, in situ Raman spectra confirm that both Ru and B sites serve as active sites for the HER. Moreover, the stability of RuB 2 can be further enhanced by optimizing the microenvironments of the anolyte composition (H + , K + ). More importantly, the experimental and density functional theory (DFT) calculations reveal that the co-existence of H + and K + localized around the RuB 2 plays a crucial role in further enhancing the stability.

关键词： Metal borides• Joule heating ultrafast synthesis electrocatalysis hydrogen evolution reaction

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Switching CO2Electroreduction toward C2+Products and CH4by Regulating the Dimerization and Protonation in Platinum/Copper Catalysts

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Angewandte Chemie 2025年

作者： Tailei Hou Jiexin Zhu Hongfei Gu Xinyuan Li Yiqing Sun Ze Hua Ruiwen Shao Cheng Chen Botao Hu Liqiang Mai Shenghua Chen Dingsheng Wang Jiatao Zhang Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications MOE Key Laboratory of Cluster Science MIIT Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering School of Chemistry and Chemical Engineering School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Chemistry National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology Xi'an Jiaotong University Xi'an 710049 P. R. China Key Laboratory of Environmental Nanotechnology and Health Effects Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Beijing 100094 P. R. China Department of Chemistry Tsinghua University Beijing 100084 China

Copper (Cu)-based catalysts exhibit distinctive performance in the electrochemical CO 2 reduction reaction (CO 2 RR) with complex mechanism and sophisticated types of products. The management of key intermediates *CO and *H is a necessary factor for achieving high product selectivity, but lack of efficient and versatile strategies. Herein, we designed Pt modified Cu catalysts to effectively modulate the competitive coverage of those intermediates. The Pt single-atoms and Pt nanoparticles modified Cu catalysts (denoted as Cu-Pt 1 and Cu-Pt NPs ) precisely regulated the protonation and dimerization, with the faradaic efficiency (FE) of C 2+ products up to 70.4 % and the FE of CH 4 reaching 57.7 %, respectively. CO stripping experiments reveal that Pt 1 sites could enhance the adsorption of *CO, while Pt NPs exhibit *CO tolerance for H 2 O dissociation. In situ spectroscopic results further confirms that high coverage of *CO is achieved on Cu-Pt 1 , while *CHO on Cu-Pt NPs might generate by additional water dissociation. As elucidated by theoretical studies, the interfacial sites of Cu-Pt 1 would favor the *CO coverage promoting the evolution of *OCCO for C 2+ products while Pt NPs supplementarily accelerate H 2 O dissociation achieving *CHO for CH 4 . This work provides insights for efficient and targeted CO 2 conversion by atomically design of active sites with engineered key intermediates coverage.

关键词： CO2 Electroreduction Platinum/Copper Catalysts key Intermediates Coverage Protonation and Dimerization

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Large-area perovskite solar cells

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Science Bulletin 2020年第11期65卷 872-875,M0003页

作者： Junliang Yang Chuantian Zuo Yong Peng Yang(Michael)Yang Xudong Yang Liming Ding State Key Laboratory of Powder Metallurgy School of Physics and ElectronicsCentral South UniversityChangsha 410083China CSIRO Manufacturing Bag 10Clayton SouthVictoria 3169Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310058China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China

Perovskite solar cells(PSCs)have been attracting much attention during the past years due to the advantages of perovskite materials such as high light absorption coefficient,excellent charge mobility,long charge diffusion length,tunable direct band gap,low cost,etc.,exhibiting great potential as the next-generation photovoltaic technology[1–3].

关键词：钙钛矿太阳电池 attracting charge

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Al_2O_3 coated LiCoO_2 as cathode for high-capacity and long-cycling Li-ion batteries

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Chinese Chemical Letters 2018年第12期29卷 1768-1772页

作者： Zelang Jian Wentao Wang Maoyu Wang Yan Wang Nick AuYeung Miao Liu Zhenxing Feng School of Chemical Biologicaland Environmental EngineeringOregon State University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of Technology Institute of Physics Chinese Academy of Sciences

Lithium-ion batteries(LIBs) as energy storage devices play an important role in all aspects of our life. The increasing energy demand of the society requires LIBs with higher energy density and better performance. We here develop a new and easy-to-scaleup sol-gel method to coat a surface protection layer on commercial LiCoO2cathode. We demonstrate that a proper thickness can improve the cycling life with a higher cut-off potential(4.5 V), larger energy capacity(180 mAh/g at 0.5 C) and better energy density(35% more compared to non-coated LiCoO2). The mechanism of the protection layer is also revealed by a combination of electron microscopy and synchrotron X-ray spectroscopy.

关键词： Lithium-ion batteries Al_2O_3 coating High-capacity Long-cycling X-ray absorption spectroscopy

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Dislocation-induced Y segregation at basal-prismatic interfaces in Mg

arXiv

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arXiv 2020年

作者： Huang, Zhifeng Turlo, Vladyslav Wang, Xin Chen, Fei Shen, Qiang Zhang, Lianmeng Beyerlein, Irene J. Rupert, Timothy J. State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Mechanical and Aerospace Engineering University of California IrvineCA92697 United States Department of Materials Science and Engineering University of California IrvineCA92697 United States Materials Department University of California Santa BarbaraCA93106 United States

Solute segregation at twin boundaries in Mg has been widely investigated, yet this phenomenon has not been studied at the equally important basal-prismatic interfaces. To fill this critical gap, this work investigates the segregation behavior of Y at basal-prismatic interfaces with various structures using atomistic simulations. The calculated interfacial energies show that short coherent interfaces and long semi-coherent interfaces containing disconnections and dislocations are more energetically stable than disordered interfaces, which is supported by our experimental observations. The segregation energy of Y at these lowest energy basal-prismatic interfaces shows a clear correlation with the atomic hydrostatic stress, highlighting the importance of local extension stresses for segregation. In addition, sites around dislocations at the semi-coherent basal-prismatic interfaces demonstrate lower segregation energy, indicating that local defects such as interfacial dislocations can further enhance the segregation. In its entirety, this study indicates that the segregation of solutes can be affected by a number of different aspects of the local structure at complex interfaces in Mg alloys. Mg;Misfit;Segregation;Dislocation;Basal-Prismatic Interface. Copyright © 2020, The Authors. All rights reserved.

关键词： Magnesium alloys

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Enhanced Ferroelectric Polarization in Laser-ablated Bi4Ti3O12 Thin Films by Controlling Preferred Orientation

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Journal of Wuhan University of technology(materials Science) 2018年第2期33卷 268-272页

作者：王传彬 LUO Sijun SHEN Qiang HU Mingzhe ZHANG Lianmeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Department of Physics and Electronics Liupanshui Normal University Liupanshui 553004 China

Polycrystalline Bi_4Ti_3O_（12） thin films with various fractions of a-axis, c-axis and random orientations have been grown on Pt（111）/Ti/Si O_2/Si substrates by laser-ablation under different kinetic growth conditions. The relationship between the structure and ferroelectric property of the films was investigated, so as to explore the possibility of enhancing ferroelectric polarization by controlling the preferred orientation. The structural characterization indicated that the large growth rate and high oxygen background pressure were both favorable for the growth of non-c-axis oriented grains in the Bi_4Ti_3O_（12） thin films. The films with high fractions of a-axis and random orientations, i e, f（a-sxis） = 28.3% and f（random） = 69.6%, could be obtained at the deposition temperature of 973 K, oxygen partial pressure of 15 Pa and laser fluence of 4.6 J/cm^2, respectively. It was also noted that the variation of ferroelectric polarization was in accordance with the evolution non-c-axis orientation. A large value of remanent polarization（2 Pr = 35.5 μC/cm^2） was obtained for the Bi_4Ti_3O_（12） thin films with significant non-c-axis orientation, even higher than that of rare-earth-doped Bi_4Ti_3O_（12） films.

关键词： Bi4Ti3O12 thin film preferred orientation ferroelectric polarization laser-ablation

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Logic-gate nanocompiler for oxidative/reductive molecular parallel detection during hepatic ischemia-reperfusion injury

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Chemical Engineering Journal 2025年 519卷

作者： Tao Tang Fushou Liu Longshua Qin Hao Li Wen-Ping Lin Yi-Ping Gu Fangtao Tan Linfeng Wang Huan Liu Mingxi Zhang Ran Cui Department of Pathology Zhongnan Hospital of Wuhan University Wuhan 430071 China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of Education Hubei Key Laboratory of Stomatology School & Hospital of Stomatology Frontier Science Center for Immunology and Metabolism Taikang Center for Life and Medical Sciences Wuhan University Wuhan 430079 China School of Public Health Guilin Medical University Guilin 541199 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

The dynamic alterations in oxidative and reductive levels jointly determine the total oxidative-stress level in hepatic ischemia-reperfusion injury (HIRI), which is responsible for hepatic dysfunction and multi-organ failure. The early medical intervention requires parallel detection of oxidative and reductive molecules, helping to alleviate or even cure liver injury. Here, a logic-gate nanocompiler (termed as Cy5-QD-FITC) with functions of dual-channel urinalysis based on NIR-IIb imaging reference realizes the parallel detection of glutathione (GSH) and reactive oxygen species (ROS) molecules, achieving the quantitative differentiation of oxidative and reductive damage during various injury degrees. Meanwhile, the nanocompiler based ratio urinalysis defines total oxidative stress with signal amplification, achieving the 4-h earlier detection than the clinical indicators. In addition, three signal outputs have been acquired for synchronous detection of reductive, oxidative and total oxidative-stress levels in the course of pre-clinical medicine, and providing a powerful tool for medicinal development in vivo .

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Dense and pure high-entropy metal diboride ceramics sintered from self-synthesized powders via boro/carbothermal reduction approach

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Science China materials 2019年第12期62卷 1898-1909页

作者： Junfeng Gu Ji Zou Shi-Kuan Sun Hao Wang Su-Yang Yu Jinyong Zhang Weimin Wangand Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Metallurgy and Materials University of BirminghamBirmingham B152TTUnited Kingdom Department of Materials Science and Engineering University of SheffieldSheffield SI 3JDUnited Kingdom

Equimolar quinary diboride powders,with nominal composition of(Ti0.2 Hf0.2 Zr0.2 Nb0.2 Ta0.2)B2,were synthesized by boro/carbothermal reduction(BCTR)of oxide mixtures(MOx,M=Ti,Hf,Zr,Nb and Ta)using B4 C as source of B and C in *** adjusting the B4 C/MOxratios,diboride mixtures without detectable MOxwere obtained at 1600℃,while high-entropy diboride(HEB)powders with particle size of<1μm was obtained at 1800℃.The phase,morphology and solid solution evolution process of the HEB powders during the BCTR process were comprehensively *** X-ray diffraction pattern indicated the powders synthesized at 1800℃ were in a single-phase Al B2 structure,elemental mappings showed that(Ta,Ti)-rich and(Zr,Nb)-rich solid solution coexisted in the HEB *** distribution of niobium and zirconium atoms in HEB was unable to reach uniform until the HEB powders were spark plasma sintered at 2000°C.(Ti0.2 Hf0.2 Zr0.2 Nb0.2 Ta0.2)B2 ceramics with a relative density of 97.9%were obtained after spark plasma sintering the HEB powders at 2050℃ under 50 *** grain growth was found in this composition when the sintering temperature was increased from 2000 to 2050℃,and the averaged grain size increased from 6.67 to 41.2μ*** ceramics sintered at 2000℃ had a Vickers hardness of 22.44±0.56 GPa(under a load of 1 kg),a Young’s modulus of^500 GPa and a fracture toughness of 2.83±0.15 MPa m1/*** is the first report for obtaining high density HEB ceramics without residual oxide phase,benefiting from the high quality HEB powders obtained.

关键词： ultra-high temperature ceramics high-entropy borides solid solution rapid grain growth powder synthesis

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