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2020 Sustainability Innovation and Fashion technology International Conference, SIFTIC 2020

作者： Fan, Hongdou Huang, Ao Zhou, Shuiqing Hu, Zhanao Yan, Shuqin Zhang, Qiang State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China

Regenerated silk fibroin (SF) has excellent biocompatibility and degradability, but its mechanical properties need to be improved. As the most widely distributed and most abundant polysaccharide in nature, the advantage of cellulose material is its good strength and modulus. In this study, SF was dissolved in formic acid and calcium chloride solution. Then glycerol and ultrasonic microcrystalline cellulose were added, and the SF/cellulose blend film was prepared by the delayed flow method. The properties of the blend films were characterized by a series of tests such as electron microscope, FTIR, tensile strength, and so on. The results showed that when the ratio of cellulose to SF reached 30 to 70 and the addition of glycerol was 30% of the total solute, the properties of SF/cellulose blend films were the best. The addition of micro-nano-cellulose fiber improved the mechanical properties of the blend film, and the addition of glycerol greatly improved the flexibility of the blend film, which expanded the application of SF/cellulose blend films in the field of biomaterials. © Published under licence by IOP Publishing Ltd.

关键词： Glycerol

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Unraveling high efficiency multi-step sodium storage and bidirectional redox kinetics synergy mechanism of cobalt-doping vanadium disulfide anode

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Journal of Energy Chemistry 2024年第7期94卷 148-157页

作者： Enzhi Li Mingshan Wang Yuanlong Feng Lin Yang Qian Li Zhenliang Yang Junchen Chen Bo Yu Bingshu Guo Zhiyuan Ma Yun Huang Jiangtao Liu Xing Li School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500SichuanChina Institute of Materials China Academy of Engineering PhysicsMianyang 621908SichuanChina State Key Laboratory of Advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd.Zunyi 563003GuizhouChina school of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Sodium-based storage devices based on conversion-type metal sulfide anodes have attracted great atten-tion due to their multivalent ion redox reaction ***,they also suffer from sodium polysul-fides(NaPSs)shuttling problems during the sluggish Na^(+) redox process,leading to"voltage failure"and rapid capacity ***,a metal cobalt-doping vanadium disulfide(Co-VS_(2))is proposed to simulta-neously accelerate the electrochemical reaction of VS_(2) and enhance the bidirectional redox of soluble *** is found that the strong adsorption of NaPSs by V-Co alloy nanoparticles formed in situ during the conversion reaction of Co-VS_(2) can effectively inhibit the dissolution and shuttle of NaPSs,and ther-modynamically reduce the formation energy barrier of the reaction path to effectively drive the complete conversion reaction,while the metal transition of Co elements enhances reconversion kinetics to achieve high ***,Co-VS_(2) also produce abundant sulfur vacancies and unsaturated sulfur edge defects,significantly improve ionic/electron diffusion ***,the Co-VS_(2) anode exhibits ultrahigh rate capability(562 mA h g^(-1) at 5 A g^(-1)),high initial coulombic efficiency(~90%)and 12,000 ultralong cycle life with capacity retention of 90%in sodium-ion batteries(SIBs),as well as impressive energy/power density(118 Wh kg^(-1)/31,250 W kg^(-1))and over 10.000 stable cycles in sodium-ion hybrid capacitors(SIHCs).Moreover,the pouch cell-type SIHC displays a high-energy density of 102 Wh kg^(-1) and exceed 600 stable *** work deepens the understanding of the electrochemical reaction mechanism of conversion-type metal sulfide anodes and provides a valuable solution to the shuttlingofNaPSs inSIBsandSIHCs.

关键词： Sodium-ionbatteries Sodium-ion hybrid capacitors Pouch cells Vanadium disulfide Shuttle effect

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Cation-doped LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) cathode with high rate performance

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Chinese Journal of Chemical Engineering 2024年第6期70卷 139-148页

作者： Long Zhang Dongsheng Yang Lilei Miao Chunmeng Zhang Jiexiang Li Jiawei Wen Chunxia Wang Tiantian Cao Guoyong Huang Shengming Xu College of New Energy and Materials China University of PetroleumBeijing 102249China State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of PetroleumBeijing 102249China Beijing Spacecrafts Beijing 100094China SINOPEC Sales Co. Ltd.Beijing 100728China SINOPEC Research Institute of Petroleum Processing Co. LtdBeijing 100083China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Beijing Key Laboratary of Fine Ceramics Tsinghua UniversityBeijing 100084China

The nickel-rich layered cathode material LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)has high energy density,lower cost and is a promising cathode material currently under ***,its electrochemical and structural stability is poor during *** the many modification methods,cation doping has been consistently proven to be an effective strategy for enhancing electrochemical ***,the NCM811 cathode material was modified by solid-phase reactions with Mg and Al *** addition,the corresponding mechanism of NCM811 cathode material-doped modification is explored by density functional theory(DFT)calculations,and we have extended this approach to other ternary cathode materials with different ratios and obtained universal *** with DFT calculations,the results show that Mg2+occupies the Li+site and reduces the degree of Li^(+)/Ni^(2+) mixture;Al^(3+) acts as a structural support during charging and discharging to prevent structural *** electrochemical properties were tested by an electrochemical workstation and the LAND system,and the results showed that the capacity retention rate increased to varying degrees from 63.66%to 69.87%and 89.05%for NCM811-Mg and NCM811-Al at room temperature after 300 cycles,*** study provides a theoretical basis and design strategy for commercializing cationic-doped modification of nickel-rich cathode materials.

关键词： Li-ion batteries Cathode materials Doped Electrochemical properties DFT calculation

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银掺杂镍的硫醇盐类团簇用于非均相电催化二氧化碳还原

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Science China materials 2023年第1期66卷 407-412页

作者：田凡李旺轩郭文锦李广芳陈嵘 School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430205China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

精细调控具有原子尺度精确的团簇结构并将其应用于非均相催化研究,对于从分子水平阐明催化反应机制,明确催化反应活性位具有重要意义.本文基于环已硫醇保护的Ni_(4)团簇体系,成功制备了一种全新的Ni_(3)Ag_(2)双金属团簇,该团簇为Ni_(4... 详细信息

精细调控具有原子尺度精确的团簇结构并将其应用于非均相催化研究,对于从分子水平阐明催化反应机制,明确催化反应活性位具有重要意义.本文基于环已硫醇保护的Ni_(4)团簇体系,成功制备了一种全新的Ni_(3)Ag_(2)双金属团簇,该团簇为Ni_(4)团簇中一个Ni原子被两个Ag原子取代的结果.研究发现将该团簇用于非均相电催化二氧化碳还原,Ni_(3)Ag_(2)双金属团簇催化二氧化碳还原产生一氧化碳的法拉第效率可达90%以上,而母体结构Ni_(4)团簇的催化产物主要为氢气.对照实验与DFT理论计算结果表明,电解中去配体过程对于Ni_(3)Ag_(2)团簇的高选择性催化具有重要作用.其催化二氧化碳选择性还原的主要活性位为去配体后暴露出的Ni原子而非Ag原子.

关键词：非均相催化二氧化碳还原团簇结构活性位一氧化碳选择性催化选择性还原原子尺度

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Surface pseudocapacitance of mesoporous Mo_(3)N_(2) nanowire anode toward reversible high-rate sodium-ion storage

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Journal of Energy Chemistry 2021年第4期30卷 295-303页

作者： Yalong Jiang Jun Dong Shuangshuang Tan Qiulong Wei Fangyu Xiong Wei Yang Yuanhao Shen Qingxun Zhang Zi'ang Liu Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005FujianChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200GuangdongChina

Sodium-ion storage devices are highly desirable for large-scale energy storage applications owing to the wide availability of sodium resources and low *** metal nitrides(TMNs)are promising anode materials for sodium-ion storage,while their detailed reaction mechanism remains ***,we synthesize the mesoporous Mo3N2 nanowires(Meso-Mo_(3)N_(2)-NWs).The sodium-ion storage mechanism of Mo3N2 is systematically investigated through in-situ XRD,ex-situ experimental characterizations and detailed kinetics ***,the Mo_(3)N_(2) undergoes a surface pseudocapacitive redox charge storage *** from the rapid surface redox reaction,the Meso-Mo_(3)N_(2)-NWs anode delivers high specific capacity(282 m Ah g^(-1) at 0.1 A g^(-1)),excellent rate capability(87 m Ah g^(-1) at 16 A g^(-1))and long cycling stability(a capacity retention of 78.6%after 800 cycles at 1 A g^(-1)).The present work highlights that the surface pseudocapacitive sodium-ion storage mechanism enables to overcome the sluggish sodium-ion diffusion process,which opens a new direction to design and synthesize high-rate sodiumion storage materials.

关键词： Surface pseudocapacitance Sodium-ion storage Nitrogen vacancy Molybdenum nitride High-rate

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Synthesis of mordenite by solvent-free method and its application in the dimethyl ether carbonylation reaction

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Chinese Journal of Chemical Engineering 2024年第2期66卷 216-223页

作者： Yinghui Liu Shaoduo Liu Xiaosheng Wang Hongjing Wang Ranjia Li Changchun Yu Chunming Xu Yuxiang Liu Zhengqiu Xie Yongqiang Wang Pan Tang State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of Petroleum-BeijingBeijing 102249China Synfuels China Technology Co. LtdBeijing 101400China College of Chemical Engineering Qingdao University of Science&TechnologyQingdao 266042China Yueyang Jucheng Chemical Co. LtdYueyang 414009China

Mordenite with different Si/Al ratios were synthesized by solvent-free method and used for dimethyl ether(DME)carbonylation *** influence of Si/Al ratio in the feedstock on the structure,porosity and acid sites were systematically *** characterization results showed that with the increase of Si/Al ratio in the feedstock,part of silicon species fail to enter the skeleton and the specific surface area and pore volume of the samples *** amount of weak acid and medium strong acid decreased alongside with the increasing Si/Al ratio,and the amount of strong acid slightly *** Al atoms preferentially enter the strong acid sites in the 8 member ring(MR)channel during the crystallization *** high Si/Al ratio sample had more acid sites located in the 8 MR channel,leading to more active sites for carbonylation reaction and higher catalytic *** increasing the Si/Al ratio was beneficial for the improvement of carbonylation reaction activity over the mordenite(MOR)catalyst.

关键词： Carbonylation Dimethyl ether Solvent-free Zeolite Synthesis Catalysis

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Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis

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Interdisciplinary materials 2022年第1期1卷 51-87页

作者： Lei Zhang Jiawei Zhu Xin Li Shichun Mu Francis Verpoort Junmin Xue Zongkui Kou John Wang Department of Materials Science and Engineering National University of SingaporeSingaporeSingapore State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina School of Physical&Mathematical Sciences Nanyang Technological UniversitySingaporeSingapore

Single-atom catalysts,featuring some of the most unique activities,selectivity,and high metal utilization,have been extensively studied over the past *** their high activity,selectivity,especially towards small molecules or key intermediate conversions,they can be synergized together with other active species(typically other single atoms,atomic clusters,or nanoparticles)in either tandem or parallel or both,leading to much better performance in complex catalytic *** there have been reports on effectively combining the multiple components into one single catalytic entity,the combination and synergy between single atoms and other active species have not been reviewed and examined in a systematic ***,in this overview,the key synergistic interactions,binary complementary effects,and the bifunctional functions of single atoms with other active species are defined and discussed in *** integration functions of their marriages are in-vestigated with particular emphasis on the homogeneous and heterogeneous combinations,spatial distribution,synthetic strategies,and the thus-derived outstanding catalytic performance,together with new light shined on the catalytic mechanisms by zooming in several case *** dynamic nature of each of the active species and in particular their interactions in such new catalytic entities in the heterogeneous electrocatalytic processes are visited,on the basis of the in situ/operando ***,we feature the current chal-lenges and future perspectives of these integrated catalytic entities that can offer guidance for advanced catalyst design by the rational combination and synergy of binary or multiple active species.

关键词： atomic clusters binary/multiple synergy heterogeneous catalysis nanoparticles single atoms

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Transverse Resonance Suppression of AlN-based Surface Acoustic Wave Resonators using Trench Structure

Transverse Resonance Suppression of AlN-based Surface Acoust...

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IEEE International Symposium on Applications of Ferroelectrics (ISAF)

作者： Yuanhang Qu Xiyu Gu Xiang Chen Min Wei Zesheng Liu Jiaqi Ding Yan Liu Chengliang Sun The Institute of Technological Science Wuhan University Wuhan China School of Physics and Technology Wuhan University Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China

ISBN: (数字)9798350371901

ISBN: (纸本)9798350371918

In recent years, aluminum nitride (AlN) has attracted considerable attention for its high acoustic velocity and stable piezoelectric properties at high temperatures, making it a promising material for high-performance SAW sensors. However, simulation studies have identified higher-order transverse Lamb wave modes in AlN-based SAW resonators. These spurious modes reduce the sensor’s quality (Q) factor and cause frequency interference, affecting the signal-to-noise ratio and transmission range. This study effectively excites the piston mode by etching part of the piezoelectric material in the gap region to form a trench structure. Simulation results show that the trench design effectively creates a waveguide structure, suppressing transverse spurious modes and improving the overall device performance. The proposed trench structure presents a viable approach for advancing AlN-based SAW wireless sensor technology.

关键词： Performance evaluation Wireless communication Temperature sensors Pistons Wireless sensor networks Simulation Surface acoustic waves Resonance Sensors Resonators

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Flexible and highly-sensitive pressure sensor based on controllably oxidized MXene

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InfoMat 2022年第9期4卷 60-71页

作者： Yanan Ma Yongfa Cheng Jian Wang Si Fu Mengjun Zhou Yue Yang Baowen Li Xin Zhang Ce-Wen Nan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices&International School of Materials Science and EngineeringWuhan University of TechnologyWuhanChina School of Mathematics Physics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyanChina Center for Nanoscale Characterization&Devices(CNCD) Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and Technology(HUST)WuhanChina Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefeiChina State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijingChina

Conductive Ti_(3)C_(2)T_(x)MXenes have been widely investigated for the construction of flexible and highly-sensitive pressure *** the inevitable oxidation of solution-processed MXene has been recognized,the effect of the irreversible oxidation of MXene on its electrical conductivity and sensing properties is yet to be ***,we construct a highly-sensitive and degradable piezoresistive pressure sensor by coating Ti_(3)C_(2)T_(x)MXene flakes with different degrees of in situ oxidation onto paper substrates using the dipping-drying *** situ oxidation can tune the intrinsic resistance and expand the interlayer distance of MXene *** partially oxidized MXene-based piezoresistive pressure sensor exhibits a high sensitivity of 28.43 kPa^(-1),which is greater than those of pristine MXene,over-oxidized MXene,and state-of-the-art paper-based pressure ***,these sensors exhibit a short response time of 98.3 ms,good durability over 5000 measurement cycles,and a low force detection limit of 0.8 ***,MXene-based sensing elements are easily degraded and environmentally *** MXene-based pressure sensor shows promise for practical applications in tracking body movements,sports coaching,remote health monitoring,and human–computer interactions.

关键词： adjustable sensitivity in situ oxidation interlayer distance MXene pressure sensor

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CO_(2) adsorption and activation on p-block catalyst Ga_(2)O_(3)

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Science China materials 2025年第2期68卷 590-596页

作者： Zhizhuang Liu Xiaoxu Kuang Baowen Li Chenghua Sun Rong Tu Song Zhang Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory Chaozhou 521000China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Department of Chemistry and Biotechnology Swinburne University of TechnologyHawthornVictoria 3122Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The fixation and conversion of CO_(2)frommedium-and high-temperature industrial exhaust gases arescientifically important and challenging tasks owing to theharsh conditions ***_(2)O_(3),a stable p-block compound,is surprisingly active in the thermal conversion of hot CO_(2)waste gas,but its underlying mechanism remains *** study,we investigated CO_(2)adsorption and activationacross 11 different Ga_(2)O_(3)-terminated faces using densityfunctional *** transfer and chemical bond analysesrevealed the occurrence of two distinct activation mechanismsinvolving synchronous electron gain and loss,driven by astrong synergetic effect between Ga cations and O anions onthe substrate *** Ga-O synergy enhances the CO_(2)activation efficiency compared with single active sites,with CO_(2)^(δ+) cation more readily capturing H atom than CO_(2)^(δ–).Tothe best of our knowledge,such a dual activation mechanismhas not been reported before,particularly for p-block *** findings provide new insights into the direct catalyticconversion of CO_(2)emissions and offer strategies for the rational design of industrial-grade catalysts for medium-andhigh-temperature CO_(2)tail gas conversion.

关键词： p-block catalyst gallium oxide carbon dioxide density functional theory synergetic mechanism

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