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Achieving ultrahigh electrochemical performance by surface design and nanoconfined water manipulation

National Science Review 2022年第6期9卷 143-152页

作者： Haisheng Li Kui Xu Pohua Chen Youyou Yuan Yi Qiu Ligang Wang Liu Zhu Xiaoge Wang Guohong Cai Liming Zheng Chun Dai Deng Zhou Nian Zhang Jixin Zhu Jinglin Xie fuhui liao Hailin Peng Yong Peng Jing Ju Zifeng Lin Junliang Sun College of Chemistry and Molecular Engineering Beijing National Laboratory for Molecular Sciences Peking University Key Laboratory of Flexible Electronics and Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Core Labs King Abdullah University of Science and Technology Electron Microscopy Centre of Lanzhou University Lanzhou University School of Chemical and Environmental Engineering China University of Mining and Technology State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences Analytical Instrumentation Center Peking University School of Physical Science and Technology Electron Microscopy Centre of Lanzhou University and Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University College of Materials Science and Engineering Sichuan University

The effects of nanoconfined water and the charge storage mechanism are crucial to achieving the ultrahigh electrochemical performance of two-dimensional transition metal carbides(MXenes). We propose a facile method to manipulate nanoconfined water through surface chemistry modification. By introducing oxygen and nitrogen surface groups, more active sites were created for Ti3C2MXene, and the interlayer spacing was significantly increased by accommodating three-layer nanoconfined water. Exceptionally high capacitance of 550 F g-1(2000 F cm-3) was obtained with outstanding high-rate performance. The atomic scale elucidation of the layer-dependent properties of nanoconfined water and pseudocapacitive charge storage was deeply probed through a combination of ‘computational and experimental microscopy’. We believe that an understanding of, and a manipulation strategy for, nanoconfined water will shed light on ways to improve the electrochemical performance of MXene and other two-dimensional materials.

关键词： two-dimensional material MXene nanoconfined water energy storage mechanism supercapacitors

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Crystallization of Gd2O3 nanoparticles: evolution of the microstructure via electron-beam manipulation

Crystallization of Gd2O3 nanoparticles: evolution of the mic...

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中国化学会第十届全国无机化学学术会议

作者： He Li Jiangfeng Li Yunling jia fuhui liao Yuejiao Xu Lingdong Sun Chunhua Yan Yanting Li Lijian Bie Jing Ju School of Materials Science and Engineering Hebei Provincial Key Laboratory of Traffic Engineering MaterialsShijiazhuang Tiedao University College of Chemistry and Molecular Engineering Peking University Beijing National Laboratory for Molecular Sciences (BNLMS) School of Materials Science and Engineering Tianjin University of Technology

NaGdF is one of the most commonly employed phosphor host matrixes for lanthanide doping and is one of the most efficient infrared-to-visible up-conversion fluorescent host *** the structure,morphology and luminescent properties of NaREF have been sufficiently investigated,there are very few reported instances of introducing localized order/crystallinity by electron-beam (e-beam).

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Synthesis, Structure and Ion exchange Properties of Na3Ti2O2（OH）（PO4）2

Synthesis, Structure and Ion exchange Properties of Na3Ti2O2...

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第三届散裂中子源多学科应用研讨会

作者： Sihai Yang, Guobao Li, fuhui liao and Jianhua Lin State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China

＜正＞Titanium phosphates （TiPOs） are very promising with applications in non-linear optics, ion exchange , ion conductivity and redox catalysis .Our group has paid much attention on novel titanium phosphate compounds. Here, we report the synthesis, structure and ion exchange properties of Na3Ti2O2（OH）（PO4）2 （I）, a 3D TiPO with new linkage of TiO6

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Neutron Diffraction Study on the Magnetic Structure of 153EuMnO3-δ: One Way to Assess the Magnetic Structure of EuMnO3-δ

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Research and Application of Materials Science 2020年第2期2卷 58-64页

作者： Xing MA Muhammad Asim FARID Jian LI Aimei YANG Guobao LI fuhui liao Laijun LIU Jianhua LIN Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871P.R.China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004P.R.China Department of Chemistry Division of Science and TechnologyUniversity of Education Lahore 54770Pakistan

Owing to the strong neutron absorption of 151Eu,151Eu free 153EuMnO3-δhas been synthesized to collect the neutron diffraction data for analyzing the magnetic structure of EuMnO3-δ.The obtained neutron diffraction data of 153EuMnO3-δindicates that the magnetic diffraction peaks corresponding to cAAFM(canted A-type antiferromagnetic)phase can be observed,but the magnetic diffraction peaks corresponding to expected ICAFM(incommensurate antiferromagnetic)phase may be too weak to be observed.

关键词： Magnetic structure Neutron diffraction 153EuMnO3 Perovskite

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不同年龄段不孕症女性生育压力和生活质量的调查研究

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实用妇科内分泌电子杂志 2024年第2期11卷 6-8,12页

作者：周玲廖兰英朱俞欢黄福辉李荣南宁市第二人民医院生殖中心广西南宁530031

目的探究不同年龄段不孕症女性的生育压力和生活质量。方法选取360例不孕症女性,根据生育问题调查问卷(FPI)和生育生活质量问卷(FertiQol)量表进行调查,评价不同年龄段其生育压力和生活质量。结果农村的不孕症女性生育压力远大于城市不... 详细信息

目的探究不同年龄段不孕症女性的生育压力和生活质量。方法选取360例不孕症女性,根据生育问题调查问卷(FPI)和生育生活质量问卷(FertiQol)量表进行调查,评价不同年龄段其生育压力和生活质量。结果农村的不孕症女性生育压力远大于城市不孕症女性(P<0.05);本科以下不孕症女性的生育压力大于本科及以上的不孕症女性(P<0.05)。低龄不孕症女性社会关注、性关注、关系关注、父母角色的需求评分均低于高龄不孕症女性(P<0.05)。低龄不孕症女性身心关系、社会关系、环境、耐受性评分及总分均高于高龄不孕症女性(P<0.05)。结论相比低龄不孕症女性,高龄不孕症女性的生育压力较大,而生活质量较低。临床应加强高龄不孕症女性的心理干预和社会信息支持,同时增加情绪、生理和行为等方面的健康教育,进而降低其生育压力和提高生活质量。

关键词：不孕不育生育压力生活质量

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New design principles for the bath towards chromate-and crack-free conversion coatings on magnesium alloys

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Journal of Magnesium and Alloys 2021年第2期9卷 505-519页

作者： Shangju liao Baoxing Yu Xuliang Zhang Xiaopeng Lu Peng Zhou Chunyan Zhang XiaoBo Chen Tao Zhang fuhui Wang Corrosion and Protection Division Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences62 Wencui RdShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Shenyang National Laboratory for Materials Science Northeastern University3-11 Wenhua RdShenyang 110819China Shanghai Spaceflight Precision Machinery Research Institute No.76 Guide RoadSongjiangShanghai 201600China School of Engineering RMIT UniversityCarltonVIC 3053Australia

Cracking and low thickness are major obstacles to the high corrosion performance of conversion coating on magnesium *** this work,the ratio of total acidity to p H(TA/p H)was applied as an indicator,and new principles regarding the design of conversion bath were *** treatment bath should be composed of species that can be categorized into two groups:the first group of species that react with Mg substrate to increase the local p H at the interface;the second group that precipitate and contributes to the growth of *** species belong to second group exists in a supersaturated state and its precipitation process is almost independent on the reactions of the species in first *** this way,a thick and crack-free two-layered conversion coating is ***,the nature of the adjustment of TA/p H and the roles of the oxidizing agent and catalyst were discussed.

关键词： Phosphate conversion coating Design principles Magnesium alloy TA/pH Corrosion resistance

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Multifunctional superhydrophobic coatings fabricated from basalt scales on a fluorocarbon coating base

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Journal of Materials Science & Technology 2021年第25期84卷 86-96页

作者： Hongpeng Zheng Li Liu Fandi Meng Yu Cui Zhong Li Emeka E.Oguzie fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityNo.3-11 Wenhua RoadShenyang110819PR China Institute of Metal Research Chinese Academy of SciencesWencui Rd 62Shenyang110016PR China Africa Centre of Excellence in Future Energies and Electrochemical Systems Federal University of Technology OwerriPMB 1526OwerriImo StateNigeria

Superhydrophobic coatings are increasingly being evaluated as anticorrosion interventions in exceedingly hydrated ***,concerns about their long-term durability and amenability to large-area applications in marine environments are still hindering commercial-scale *** study is focused on development of easy-to-apply superhydrophobic coatings,with multifunctional capabilities,in order to extend the integrity and durability of the coatings in harsh marine ***,a set of facile methods involving selective chemical etching using concentrated Na OH,as well as fluorination with perfluoropolyether methyl ester were adopted to fabricate a superhydrophobic surface on basalt scales,having the required rough hierarchical micro-nanotextured and low surface *** superhydrophobic basalt scales were subsequently aligned atop a fluorocarbon resin,pre-deposited on a metal substrate,to yield a multifunctional superhydrophobic coating(3μL water droplet;contact angle=165.1°,rolling angle=0.7°),easily amenable to large surface area application and having excellent wear resistance,UV-aging resistance,salt spray resistance,corrosion resistance and antibacterial capabilities.

关键词： Basalt scales Multifunctional Superhydrophobic Chemical etching Fluoridation

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Optimizing the electromagnetic wave absorption performance of designed hollow CoFe_(2)O_(4)/CoFe@C microspheres

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Journal of Materials Science & Technology 2021年第22期81卷 190-202页

作者： Jianwen Ge Shimeng Liu Li Liu Yu Cui Fandi Meng Yixing Li Xuefeng Zhang fuhui Wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China Institute of Metal Research Chinese Academy of SciencesShenyang110016China

Whereas hollow composites present some superiorities like abundant micro interfaces,outstanding impedance matching as the responses of electromagnetic wave(EMW),but versatile designs including crystal transformation,heterogeneous structures and magnetic exchange coupling to further contribution are even not designed or stressed together in previous *** this article,rational design on the hollow CoFe_(2)O_(4)/CoFe@C architecture has been conducted by a sequential process of self-sacrifice by combustion,in-suit polymerization and *** of morphology observation exhibit that heterogeneous CoFe_(2)O_(4)/CoFe@C composites were generated via crystal transformation from CoFe_(2)O_(4) to CoFe alloys with encapsulated carbon,together with ultimate growth of crystal *** for three carbon-based architectures,relatively low-graphitization carbon layers are favorable for enhancing impedance matching and polarization relaxation,but suppressing the conductive loss *** carbon content endows sample S2 with the maximum magnetic saturation(Ms)of 152.4 emu g^(-1).The optimized RL of sample S3 is up to-51 dB with 30 wt%loading,and the effective absorption band(EAB)is of 5.9 GHz at the thickness of 2.17 mm,while 6.0 GHz can be reached at 2.5 ***,this hollow multi-interfaces design definitely shed light on novel structure for new excellent absorbers.

关键词： CoFe_(2)O_(4)/CoFe@C Alloying processing Absorption performance Carbon layers

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Fabricating antibacterial CoCrCuFeNi high-entropy alloy via selective laser melting and in-situ alloying

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Journal of Materials Science & Technology 2022年第7期102卷 159-165页

作者： Jingbo Gao Yuting Jin Yongqiang Fan Dake Xu Lei Meng Cong Wang Yuanping Yu Deliang Zhang fuhui Wang School of Materials Science and Engineering Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang 110819China

A quasi-equiatomic CoCrFeCuNi high-entropy alloy(HEA) with a broad-spectrum antibacterial ability and good mechanical properties has been fabricated by selective laser melting(SLM) and in-situ alloying of a blend of pre-alloyed CoCrFeNi powder and Cu elemental *** as-built HEA alloy has a homogeneous distribution of Cu and presents a single FCC *** with the same HEA fabricated using the traditional ingot metallurgy(IM) process,the HEA alloy fabricated by SLM releases more Cu ions to prevent growth and biofilm formation by gram-negative Escherichia coli and gram-positive Staphylococcus aureus,which enhances the applicability of the HEA alloy in potential applications that requires antibacterial *** results of this study confirm the feasibility of combining the antibacterial CoCrFeCuNi HEA alloy and SLM technology in fabricating complex shaped parts or structures with a strong antibacterial ability to be used in medical application or other environments desired for antibacterial ability.

关键词： High entropy alloys Selective laser melting In-situ alloying Mechanical properties Antibacterial ability

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在900℃添加CeO_(2)对SiO_(2)-Al_(2)O_(3)-ZnO-CaO搪瓷析晶和热震行为的影响

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材料研究学报 2022年第2期36卷 90-98页

作者：丰敏廖依敏陈明辉朱圣龙王福会东北大学沈阳材料科学国家研究中心东北大学联合研究分部沈阳110819 中国科学院金属研究所沈阳110016

在SiO_(2)-Al_(2)O_(3)-ZnO-CaO-ZrO_(2)-TiO_(2)搪瓷中加入10%~20%(质量分数)粒径为20~50 nm的CeO_(2)颗粒,制备出SiO_(2)-Al_(2)O_(3)-ZnO-CaO搪瓷,用扫描电子显微镜(SEM)/能谱仪(EDS)、X射线衍射仪(XRD)和透射电镜(TEM)研究其在900℃空气中的析晶行为和相演变。结果表明:添加20%的CeO_(2)颗粒可阻碍针状ZrSiO_(4)和羽毛状CaTiSiO_(5)晶体的析出,随着CeO_(2)颗粒添加量的提高阻碍作用增强;CeO_(2)与搪瓷中的ZrO_(2)结合生成固溶体促进初生晶体CaZrTi2O_(7)析出,而CaZrTi2O_(7)随着烧结时间的延长几乎不转变为ZrSiO4。同时,在生成Ca ZrTi 2 O_(7)晶体的过程中Ca和Ti的消耗也抑制了CaTiSiO_(5)晶体的析出。这表明,添加20%的CeO_(2)可使这种搪瓷体系在900℃保持较高的稳定性和优异的抗热震性能,从而延长搪瓷的使用寿命。

关键词：无机非金属材料搪瓷添加CeO_(2) 析晶相变热震

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