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Tribocorrosion Behavior and Degradation Mechanism of 316L Stainless Steel in Alkaline Solution:Effect of Tribo-Film

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Acta Metallurgica Sinica(English Letters) 2022年第8期35卷 1365-1375页

作者： Jingyi Zou Zhongwei Wang Yanlong Ma liwen tan College of Material Science and Engineering Chongqing University of TechnologyChongqing 400054China

Tribocorrosion behavior and degradation mechanism of 316L stainless steel(SS)in alkaline solution were *** SS was worn in 0.1 mol/L NaOH solution with different potentials to investigate the synergism between wear and *** SS showed larger material loss at a cathodic potential of-0.8 V and lower material loss at anodic potential when compared with that under pure wear *** was inverse when compared with that in other corrosive media,such as H_(2)SO_(4)and NaCl *** formation of Tribo-films with different properties at different potentials played decisive role in the degradation ***-films were formed at cathodic potential(-0.8 V)and anodic potentials(0 and 0.4 V).The tribo-film formed at-0.8 V had the highest O content and was very *** resulted in the easily peeling off of the film and then the acceleration of material *** contrast,the Tribo-films formed at anodic potentials were more complete and the O content was much *** kind of ductile Tribo-films could protect the SS from *** locally high concentration of OH-produced in the reduction reaction of oxygen at-0.8 V could react with the tribo-film which consist of nano-particles(NPs)with high chemical activity and finally led to deep oxidation and embrittlement of the *** passivation of the NPs at the anodic potentials could inhibit the oxidation of tribo-film to maintain its ductility.

关键词： Tribocorrosion 316L stainless steel NaOH Tribo-film Nano-particles

Self-assembled, highly-lithiophilic and well-aligned biomass engineered MXene paper enables dendrite-free lithium metal anode in carbonate-based electrolyte

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Journal of Energy Chemistry 2022年第6期31卷 221-230,I0007页

作者： liwen tan Chuanliang Wei Yuchan Zhang Shenglin Xiong Hui Li Jinkui Feng Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinan 250061ShandongChina School of Chemistry and Chemical Engineering Shandong UniversityJinan 250061ShandongChina Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Shandong UniversityJinan 250061ShandongChina

Lithium metal anode is the ideal candidate for high-energy–density rechargeable ***,uncontrolled dendrite growth hampers its ***,a dendrite-free composite Li metal anode is realized by a flexible,freestanding,well-aligned and highly-lithiophilic MXene paper designed by a facile electrostatic self-assembly of the exfoliated MXene nanosheets and natural polysaccharidechitosan (MX@CS).The MX@CS paper gets a well-aligned layered-3D structure with a micro-crumpled surface that can effectively decrease the local current density,guide even Li plating and suppress dendritic Li *** importantly,surface-adsorbed chitosan endows enhanced lithiophilicity for MXene substrate and thus reduces the Li nucleation overpotential,which is confirmed by the density functional theory *** lithiophilic groups on MX@CS surface provide highconcentration Li^(+)anchoring site promoting Li nucleation and laterally inducing uniform Li deposition,which effectively avoids the formation of dendritic *** a result,the MX@CS-Li anode with a dendrite-free Li morphology shows a significantly improved cycling life in commercial carbonatebased *** coupled with LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)cathode,the full cell exhibits a low capacity decay and steady ultrahigh Coulombic efficiency of 99.6%at a current density of *** findings develop a new approach for designing high-performance metal-based rechargeable batteries.

关键词： MXene Polysaccharide Free dendrite High lithiophilicity Lithium metal anode

Room-temperature liquid metal engineered iron current collector enables stable and dendrite-free sodium metal batteries in carbonate electrolytes

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Journal of Materials Science & Technology 2022年第20期115卷 156-165页

作者： Chuanliang Wei liwen tan Yuchan Zhang Huiyu Jiang Baojuan Xi Shenglin Xiong Jinkui Feng Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinan 250061China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

Metallic sodium(Na)is believed to be a promising anode material for sodium-ion batteries(SIBs)due to its low electrochemical potential,high theoretical specific capacity,superior electrical conductivity,and so ***,issues such as high chemical activity,the growth of Na dendrites,large volume change,and unstable interface impede its practical *** design a cheap iron(Fe)-based substrate decorated by a thin liquid metal Ga layer for stable and dendrite-free Na metal anodes in low-cost carbonate *** inherent mechanism of Ga-based liquid metal in inhibiting the growth of Na dendrites was revealed for the first *** metal Ga with sodiophilic property can act as nucleation seeds to decrease the nucleation barrier and induce homogeneous Na+flux,resulting in uniform and dendrite-free Na *** cells with Na_(3)V_(2)(PO_(4))_(3) cathode were also assembled to verify the practical application ability of the modified Na metal *** the regulation of the liquid metal layer,the Coulombic efficiency,cycling life,and capacity of batteries are obviously *** strategy proposed here cannot only reduce the cost of batteries but also improve their electrochemical and safety performance.

关键词： Stainless steel Current collector Sodium metal anode Liquid metal Carbonate electrolyte

Development and application of digital assistive teaching system for anatomy

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Virtual Reality & Intelligent Hardware 2021年第4期3卷 315-335页

作者： Na ZHANG liwen tan Fengying LI Bing HAN Yifa XU Shandong Digihuman Technology Co. Inc.Jinan 250100China

Background Anatomy is a required course for all medicine-related *** recent decades,the teaching quality and effect of anatomy have been compromised by factors including a decrease in human body specimens,dampened enthusiasm for the discipline,reduced teaching hours of anatomy,scale expansion of medical education,and obstacles in performing field autopsies and *** Based on China's digitalized visible human research achievements,this article extracts the boundary information of anatomic structures from tomographic images,constructs three dimensional(3D)digital anatomical models with authentic texture information,and develops an anatomy assistive teaching system for teachers and students based on the knowledge points of anatomy,to meet the anatomy teaching requirements of different majors at various *** This scientific,complete,and holistic system has produced over 60003D digital anatomical models,5000 anatomy knowledge points,50 anatomical operation videos,and 150 micro demonstration classes,with teaching contents for different majors and levels,such as systematic anatomy,topographic anatomy,sectional anatomy,anatomy of motion,and virtual anatomical operation *** from network terminals,desktops,touchscreen 3D displays,desktops,and projection 3D volumetric displays to augmented reality,its diversified interactive forms meet the requirements for a learning environment in different *** With multiple teaching and learning links covered,such as teaching environment,teaching resources,instructional slides,autonomous learning,and learning effect evaluation,this novel teaching system serves as a vital component and a necessary resource in anatomy teaching and functions as an important supplement to traditional anatomy *** and promoted in most medical colleges and schools in China,this system has been recognized and approved by anatomy teachers and students,and plays a positive role in guaranteeing

关键词： Teaching anatomy Anatomy education Virtual reality Simulation Digital anatomy Digital human

Free-standing Na_(2)C_(6)O_(6)/MXene composite paper for highperformance organic sodium-ion batteries

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Nano Research 2023年第1期16卷 458-465页

作者： Zhengran Wang Yuchan Zhang Huiyu Jiang Chuanliang Wei Yongling An liwen tan Shenglin Xiong Jinkui Feng Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education) Research Center for Carbon NanomaterialsSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Shenzhen Institute of Shandong University Shenzhen 518057China

Sodium-ion batteries(SIBs)are regarded as the ideal low-cost choice for next-generation large-scale energy storage ***-based organic salt-disodium rhodizonate(Na_(2)C_(6)O_(6))with high theoretical specific capacity(501 mAh·g−1)is considered as a promising cathode material for ***,the dissolution of active material in electrolyte and low electronic conductivity lead to rapidly capacity decay and poor rate ***,a simple method is designed to construct free-standing and flexible Ti3C2Tx Na2C6O6/MXene paper via vacuum-assisted filtration and antisolvent *** MXene can form an electronic conductive network,adsorb the active materials,and offer additional active sites for Na *** binder-free Na_(2)C_(6)O_(6)/MXene paper delivers excellent electrochemical property with a high rate performance of 231 mAh·g−1 at 1,000 mA·g−1 and a high capacity of 215 mAh·g−1 after 100 *** work provides an attractive strategy for designing high-performance organic electrode materials of SIBs.

关键词： sodium-ion batteries Na_(2)C_(6)O_(6) cathode MXene organic battery flexible free-standing

Flexible and stable 3D lithium metal anodes based on self-standing MXene/COF frameworks for high-performance lithium-sulfur batteries

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Nano Research 2021年第10期14卷 3576-3584页

作者： Chuanliang Wei Yusheng Wang Yuchan Zhang liwen tan Yi Qian Yuan Tao Shenglin Xiong Jinkui Feng Research Center for Carbon Nanomaterials Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry ofEducation)School of Materials Science and EngineeringShandong UniversityJinan 250061China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

Lithium metal(Li)is believed to be the ultimate anode for lithium-ion batteries(LIBs)owing to the advantages of high theoretical capacity,the lowest electrochemical potential,and light ***,issues such as uncontrollable growth of Li dendrites,large volume changes,high chemical reactivity,and unstable solid electrolyte interphase(SEI)hinder its rapid development and practical *** a stable and dendrite-free Li-metal anode is obtained by designing a flexible and freestanding MXene/COF framework for metallic ***-LZU1 microspheres are distributed among the MXene film *** COF-LZU1 microspheres as nucleation seeds can promote uniform Li nucleation by homogenizing the Li^(+)flux and lowering the nucleation barrier,finally resulting in dense and dendrite-free Li *** the regulation of the COF-LZU1 seeds,the Coulombic efficiency of the MXene/COF-LZU1 framework and electrochemical stability of corresponding symmetric cells are obviously ***-S full cells with the modified Li-metal anode and sulfurized polyacrylonitrile(S@PAN)cathode also exhibited a superior electrochemical performance.

关键词： MXene covalent organic framework(COF) dendrite-free lithium metal anode lithium sulfur battery sulfurized polyacrylonitrile

Modeling and simulation of an anatomy teaching system

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Visual Computing for Industry,Biomedicine,and Art 2019年第1期2卷 67-74页

作者： Xiaoqin Zhang Jingyi Yang Na Chen Shaoxiang Zhang Yifa Xu liwen tan Institute of Digital Medicine School of Biomedical Engineering and Medical ImagingArmy Medical University(Third Military Medical University)Chongqing 400038China Shandong Digihuman Technology Co. IncJinan 250101China

Specimen observation and dissection have been regarded as the best approach to teach anatomy,but due to the severe lack of anatomical specimens in recent years,the quality of anatomy teaching has been seriously *** order to disseminate anatomical knowledge effectively under such circumstances,this study discusses three key factors(modeling,perception,and interaction)involved in constructing virtual anatomy teaching systems in *** ensure the authenticity,integrity,and accuracy of modeling,detailed three-dimensional(3D)digital anatomical models are constructed using multi-scale data,such as the Chinese Visible Human dataset,clinical imaging data,tissue sections,and other *** anatomical knowledge ontology is built according to the needs of the particular teaching *** kinds of anatomical knowledge and 3D digital anatomical models are organically combined to construct virtual anatomy teaching system by means of virtual reality equipment and *** perception of knowledge is realized by the Yi Chuang Digital Human Anatomy Teaching System that we have *** virtual interaction mode,which is similar to actual anatomical specimen observation and dissection,can enhance the transmissibility of anatomical *** virtual anatomy teaching system captures the three key *** can provide realistic and reusable teaching resources,expand the new medical education model,and effectively improve the quality of anatomy teaching.

关键词： Chinese visible human Anatomy knowledge ontology Virtual reality Anatomy teaching

Metal-organic frameworks and their derivatives in stable Zn metal anodes for aqueous Zn-ion batteries

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ChemPhysMater 2022年第4期1卷 252-263页

作者： Chuanliang Wei liwen tan Yuchan Zhang Shenglin Xiong Jinkui Feng Research Center for Carbon Nanomaterials Key Laboratory for Liquid-Solid Structural Evolution&Processing of Materials(Ministry of Education)School of Materials Science and EngineeringShandong UniversityJinan 250061China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

Zn metal anode is believed to be a promising anode material for aqueous Zn-ion batteries(ZIBs)due to the mer-its such as low electrochemical potential,low cost,high theoretical specific capacity,high hydrogen evolution overpotential,less-reactive property,environmental friendliness and easy ***,issues including uncontrollable growth of Zn dendrites,corrosion by aqueous electrolyte,large volume change and unstable in-terface hinder its further ***,multifunctional metal-organic frameworks(MOFs)and their derivatives have shown huge advantages in solving the issues facing Zn metal anode,and large advances have been *** and their derivatives can stabilize Zn metal anode by interface engineering,designing host,decorating separator,constructing solid-state electrolyte and so *** we carefully summarize and analyse these ***,some perspectives and outlooks are put *** review can promote the de-velopment of MOFs,Zn metal anode as well as aqueous ZIBs.

关键词： MOFs Derivatives Aqueous Zn-ion batteries Zn metal anode Dendrite-free

Brain structure in post-traumatic stress disorder A voxel-based morphometry analysis

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Neural Regeneration Research 2013年第26期8卷 2405-2414页

作者： liwen tan Li Zhang Rongfeng Qi Guangming Lu Lingjiang Li Jun Liu Weihui Li Mental Health Institute of the Second Xiangya Hospital Central South UniversityKey Laboratory of Psychiatry and Mental Health of Hunan Province Hunan Province Technology Institute of Psychiatry Department of Medical Imaging Jinling Hospital Clinical School of Medical College Nanjing University Department of Radiology the Second Xiangya Hosipital Central South University School of Public Administration Central South University

This study compared the difference in brain structure in 12 mine disaster survivors with chronic post-traumatic stress disorder, 7 cases of improved post-traumatic stress disorder symptoms, and 14 controls who experienced the same mine disaster but did not suffer post-traumatic stress disorder, using the voxel-based morphometry method. The correlation between differences in brain structure and post-traumatic stress disorder symptoms was also investigated. Results showed that the gray matter volume was the highest in the trauma control group, followed by the symptoms-improved group, and the lowest in the chronic post-traumatic stress disorder group. Compared with the symptoms-improved group, the gray matter volume in the lingual gyrus of the right occipital lobe was reduced in the chronic post-traumatic stress disorder group. Compared with the trauma control group, the gray matter volume in the right middle occipital gyrus and left middle frontal gyrus was reduced in the symptoms-improved group. Compared with the trauma control group, the gray matter volume in the left superior parietal lo- bule and right superior frontal gyrus was reduced in the chronic post-traumatic stress disorder group. The gray matter volume in the left superior parietal Iobule was significantly positively correlated with the State-Trait Anxiety Inventory subscale score in the symptoms-improved group and chronic post-traumatic stress disorder group （r = 0.477, P = 0.039）. Our findings indicate that （1） chronic post-traumatic stress disorder patients have gray matter structural damage in the prefrontal lobe, oc- cipital lobe, and parietal lobe, （2） after post-traumatic stress, the disorder symptoms are improved and gray matter structural damage is reduced, but cannot recover to the trauma-control level, and （3） the superior parietal Iobule is possibly associated with chronic post-traumatic stress disorder. Post-traumatic stress disorder patients exhibit gray matter abnormalities.

关键词： neural regeneration neuroimaging MRI post-traumatic stress disorder voxel-based morphometry pre-frontal lobe parietal lobe occipital lobe follow-ups grants-supported paper neuroregeneration