检索结果-内蒙古大学图书馆

Interface enhanced well-dispersed Co9S8 nanocrystals as an efficient polysulfide host in lithium–sulfur batteries

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第9期29卷 109-115,I0004页

作者： Xue Liu Qiu He Hong Yuan Chong Yan Yan Zhao Xu Xu Jia-Qi Huang Yu-Lun Chueh Qiang Zhang Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070HubeiChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Materials Science and Engineering Taiwan Tsinghua UniversityHsinchu 30013TaiwanChina

The high specific capacity and energy density of lithium-sulfur batteries have attracted strong considerations on their fundamental mechanism and energy ***,polysulfide shuttle is still the key issue that impedes the development of Li-S *** nanocrystal hosts for polysulfide immobilization and conversion is a promising *** this contribution,we have investigated well-dispersed Co9S8 nanocrystals grown on graphene oxide(GO)nanosheets with different degrees of dispersion as cathode host materials for Li-S *** Co9S8-GO composite with 1 wt%GO(GCS1)has an average crystal size of 76 nm and shows the strongest adsorption capability toward lithium *** used as the host material for the cathode of Li-S batteries,the GCS1-sulfur composite exhibits an initial specific capacity of^-1000 mAh g^-1 at 0.5 C and shows an average decay rate of 0.11%for 500 *** work on the dispersion control of Co9S8 nanocrystals may inspire more investigations on well-dispersed nanocrystal based hosts for Li-S batteries.

关键词： Metal sulfides Composite sulfur cathode Cobalt sulfides Lithium-sulfur batteries Electrocatalysis

In-Situ Transformation and Synergistic Electrocatalysis of Asymmetric Threefold Hollow Sites in Rosebud-Like Ternary Metal Diselenide

学校读者我要写书评

暂无评论

SSRN 2024年

作者： Wang, Shihao Liao, Lin Wu, Jinsong Tang, Haolin Zhang, Haining State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory Guangdong Foshan528200 China International School of Materials Science and Engineering School of Materials and Microelectronics Wuhan University of Technology Hubei Wuhan430070 China Nanostructure Research Centre Wuhan University of Technology Hubei Wuhan430070 China Hubei Key Laboratory of Fuel Cell Wuhan University of Technology Hubei Wuhan430070 China

Electrochemical dynamic reconstruction substantially optimizes the catalytic properties of transition-metal-based precatalysts for the multi-electron oxygen evolution reaction (OER) by altering the surface structure, exposing more active sites, improving electron/ion transport, and enhancing stability. This research provides a comprehensive understanding of the in-situ transformation manner of a rosebud-like ternary metal diselenide precatalyst (Ni0.8Fe0.2Co0.1Se2) and the synergistic electrocatalytic mechanism of catalytic active centers through in-situ and ex-situ characterization along with DFT calculations. Benefiting from the unique morphology and abundant nanoscale planar defects within the conductive Ni0.8Fe0.2Co0.1Se2 core and the in-situ formed catalytically active (Fe, Co)-doped γ-NiOOH shell, the reconstructed catalyst achieves rapid electron/ion transport and copious active site exposure. Accordingly, the Ni0.8Fe0.2Co0.1Se2 catalyst only requires overpotentials of 101 mV and 233 mV to achieve current densities of 10 mA cm−2 and 100 mA cm−2, respectively. The overall water-splitting cell using Ni0.8Fe0.2Co0.1Se2 anode delivers current densities of 10 and 100 mA cm−2 at low cell voltages of 1.41 and 1.56 V, respectively. Furthermore, the cell demonstrates exceptional durability of 400 h at an industrial-level current density. This work sheds light on the development of efficient transition-metal-based precatalysts for OER. © 2024, The Authors. All rights reserved.

关键词： Iron compounds

Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

学校读者我要写书评

暂无评论

Journal of Materiomics 2021年第4期7卷 683-692页

作者： Qinghu Guo Fei Li Fangquan Xia Pengbin Wang Xiaoyi Gao Hua Hao Hanxing Liu Huajun Sun Shujun Zhang State Key Laboratory Silicate Materials for Architectures Center for Smart Materials and Device IntegrationSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical Engineering University of JinanJinan250022China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNew South Wales2500Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other,i.e.,higher piezoelectricity,lower Curie temperature,thus,limits their applications over broad temperature *** this research,Sm-modified 0.15 Pb(Mg_(1/3)Nb_(2/3))O_(3)-(0.85-x)PbZrO_(3)-xPbTiO_(3) ceramics have been studied,where excellent piezoelectric coefficients d33¼720 pC/N,d_(33)*=950 pm/V and high Curie temperature T_(C)=293℃ were simultaneously achieved for x=0.42 composition by designing the morphotropic phase boundary(MPB)with local structural *** particular significance is that a high thermal stability was observed with piezoelectric variation below 20%with temperature up to 280℃,demonstrating that the x=0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is *** work provides a good paradigm for designing highperformance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.

关键词： Piezoelectric ceramics Local structural heterogeneity Electromechanical response Thermal stability

Ultraviolet and Thermal Dual-Curing Assisted Extrusion-Based Additive Manufacturing of Lunar Regolith Simulant for In-Site Construction on the Moon

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Cui, Qianshun Wang, Tongcai Gu, Guangshuai Zhang, Rihan Zhao, Tingting Huang, Zhifeng Wang, Gong Chen, Fei Technology and Engineering Center of Space Utilization Chinese Academy of Sciences Beijing100094 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

The establishment of a lunar base is crucial for lunar studies, resource extraction, and advancement in deep space exploration. Considering the limitations of rocket capacity and Earth-Moon transportation costs, lunar regolith is regarded as the most practical material for lunar base construction. Consequently, the in-situ additive manufacturing technology for simulated lunar regolith has been widely studied in recent years. This paper proposes a novel additive manufacturing approach for lunar regolith simulants. The simulants and several resins were mixed into a high-solid-loading paste, which was suitable for extrusion-based additive manufacturing process. To fully leverage the lunar environment, the feasibility of the ultraviolet (UV) and thermal curing of the resins was first verified, which was followed by the validation of the lunar regolith paste with the solid content of 86 wt.%. After the characterization of the ultraviolet and heat curing properties, the paste was further 3D printed via the extrusion-based device. The extruded paste underwent preliminary curing in a UV environment and was then heated to approximate the daytime lunar conditions, achieving complete curing of the printed component. The cured parts exhibited a compressive strength of 9.83 ± 1.07 MPa, meeting the requirements for infrastructure construction in the low-gravity lunar environment. This work offers significant implications for future in-situ construction on the Moon using extrusion-based lunar regolith additive manufacturing. © 2023, The Authors. All rights reserved.

关键词： 3D printing

Hybrid Deposition of Altin/Wn Multilayer Films with Low Compressive Stress at Low Temperature

学校读者我要写书评

暂无评论

SSRN 2024年

作者： Lin, Liangliang Zhang, Song Wu, Zhengtao Lin, Yisong Zheng, Aiqin Liu, Chao Tu, Rong Wang, Qiming State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan430070 China School of Electromechanical Engineering Guangdong University of Technology Guangzhou510006 China Xiamen Golden Egret Special Alloy Co. Ltd Xiamen361006 China Xiamen Tungsten Co. Ltd Xiamen361004 China

AlTiN/WN multilayer films with low compressive stress were deposited by arc evaporation and DC magnetron sputtering at a low temperature. The phase structure, morphologies, mechanical properties, wear behavior, and cutting performance of the AlTiN/WN multilayer films were evaluated. The results show that all the as-prepared AlTiN/WN multilayer films have fcc structure and exhibit (111) preferred orientation. The lowest value -1.7 GPa for compressive stress was obtained under low-temperature deposition. The film hardness increases as the temperature increases. Increasing the WN layer thickness reduces the adhesion strength of the film. Compared with room temperature, The friction coefficients of the films against Al2O3 and steel reduce at high temperatures. This was attributed to lubricative oxides formed on the wear surface at high temperatures. Dry cutting experiments were conducted and the longest service life of the coated tool reaches ~3700 m. The worn flank surface shows that both adhesion and abrasive wear dominate the failure of the coated tools. © 2024, The Authors. All rights reserved.

关键词： Multilayers

Nir-Response Amorphous Feooh Anchored Bio2-X for Chlorophenols Photodegradation Via Molecular Oxygen Activation

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Huang, Shengnan Chen, Fengxi Zhu, Deyu Li, Jun Liu, Yunling Chen, Rong State Key Laboratory of New Textile Materials & Advanced Processing Technologies Wuhan Textile University Hubei Wuhan430200 China School of Chemistry and Environmental Engineering Wuhan Institute of Technology Donghu New & High Technology Development Zone Hubei Wuhan430205 China Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450002 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Jilin130012 China

Chlorophenols (CPs) are universal and toxic pollutants in nature, as they have been widely detected in surface water, groundwater, sediment, ambient air, soil, and the human body. In this work, novel FeOOH@BiO2-x binary heterostructure composites with UV-Vis-NIR full-spectrum response were successfully constructed by anchoring highly dispersed amorphous FeOOH on BiO2-x nanosheets. A series characterization indicated the binary components were successfully obtained. The FeOOH@BiO2-x photocatalysts exhibited highly enhanced photocatalytic activity for the degradation of chlorophenols under UV-Vis-NIR full-spectrum irradiation. The amorphous FeOOH could effectively broaden the light response range, modulate the energy band structure and promote the separation and transfer of photogenerated electron-holes pairs, thus boosting the activation of molecular oxygen to generate •O2-. Furthermore, FeOOH@BiO2-x maintained excellent photocatalytic performance upon real solar light of varied irradiance for consecutive 7 days, indicative of great potential towards phenolic pollutants degradation in water. The redox couples of Fe3+/Fe2+ and Bi(3+x)+/Bi3+ also accelerate the efficient generation of reactive oxygen species over FeOOH@BiO2-x with improved durability. This work not only contributes to the design of full-spectrum responsive photocatalysts, but also provides a rational strategy for molecular oxygen activation towards the elimination of emerging contaminants. © 2023, The Authors. All rights reserved.

关键词： Bismuth compounds

Zn0.1cd0.9s/Nis Heterojunction Photocatalysts for Enhanced H2 Production and Glucose Conversion

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Li, Yu Shen, Yuan-Sheng Bai, Fang-Yuan Wei, Ke Wang, Xin-Ling Chen, Jun Jiang, Ze-Yu Liu, Jing Hu, Zhi-Yi Chen, Li-Hua Su, Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China Wuhan University of Technology 122 Luoshi Road Hubei Wuhan430070 China University of Namur 61 rue de Bruxelles Namur5000 Belgium

The well-designed photocatalyst is a reasonable strategy to improve the photocatalytic performance and realize the photocatalytic H2-production and biomass conversion. In this work, the Zn0.1Cd0.9S/ NiS (SNS) composite was successfully prepared by chemical bath deposition of NiS nanoparticles on Zn0.1Cd0.9S (ZCS) nanorods surface. Our results show that the synergistic effect of NiS and ZCS largely improves the absorption and utilization of light, and the separation of photogenerated carriers because the one-dimensional nanorods is conducive to the transmission of photogenerated carriers. The optimized catalyst (SNS20) has the highest H2-production rate (12.77 mmol·g-1·h-1), which is 6.7 times that of pure ZCS nanorods. The glucose conversion increases from 25.7% to 49.9% and lactic acid selectivity reaches 95%. This work provides a reasonable strategy for designing heterojuction photocatalyst to improve the performance for the synergy of photocatalytic H2-production and biomass conversion. © 2023, The Authors. All rights reserved.

关键词： Nanorods

Printed aerogels: Chemistry, processing, and applications

学校读者我要写书评

暂无评论

Chemical Society Reviews 2021年第6期50卷 3842-3888页

作者： Feng, Junzong Su, Bao-Lian Xia, Hesheng Zhao, Shanyu Gao, Chao Wang, Lukai Ogbeide, Osarenkhoe Feng, Jian Hasan, Tawfique Cambridge Graphene Centre University of Cambridge CambridgeCB3 0FA United Kingdom Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology Changsha Hunan410073 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Loushi Road 122 Wuhan430070 China Laboratory of Inorganic Materials Chemistry Department of Chemistry University of Namur 61 rue de Bruxelles NamurB-5000 Belgium State Key Laboratory of Polymer Materials Engineering Polymer Research Institute Sichuan University Chengdu610065 China Laboratory for Building Energy Materials and Components Swiss Federal Laboratories for Materials Science and Technology EmpaCH-8600 Cyprus MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University 38 Zheda Road Hangzhou310027 China

As an extraordinarily lightweight and porous functional nanomaterial family, aerogels have attracted considerable interest in academia and industry in recent decades. Despite the application scopes, the modest mechanical durability of aerogels makes their processing and operation challenging, in particular, for situations demanding intricate physical structures. "Bottom-up"additive manufacturing technology has the potential to address this drawback. Indeed, since the first report of 3D printed aerogels in 2015, a new interdisciplinary research area combining aerogel and printing technology has emerged to push the boundaries of structure and performance, further broadening their application scope. This review summarizes the state-of-the-art of printed aerogels and presents a comprehensive view of their developments in the past 5 years, and highlights the key near- and mid-term challenges. This journal is © The Royal Society of Chemistry.

关键词： Aerogels

An Injectable Hydroxyapatite Microsphere Filler Loaded with Ghk-Cu Tripeptide for Anti-Inflammatory and Antioxidant

学校读者我要写书评

暂无评论

SSRN 2025年

作者： Hu, Die Zhang, Xuexun Gong, Shiwen Ma, Wentao Cheng, Bo Yang, Jing Yan, Lesan Li, Binbin Qiu, Tong Wang, Xinyu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya572000 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China School of Foreign Languages Wuhan University of Technology Wuhan430070 China Department of Stomatology Zhongnan Hospital of Wuhan University Wuhan430060 China

With the wide application of soft tissue fillers, implant material-induced inflammatory reactions have become a key factor affecting the therapeutic efficacy. This study developed an injectable filler with enhanced anti-inflammatory and antioxidant effects by adsorbing glycyl-L-histidyl-L-lysine copper complex (GHK-Cu) onto hydroxyapatite microspheres (HAPs), marking the first combination of HAPs and GHK-Cu to address inflammation caused by soft tissue fillers. GHK-Cu was successfully loaded onto HAPs by electrostatic adsorption. HAPs were then mixed with carboxymethyl cellulose (CMC), glycerol (GLY), and water to form GHK-Cu@CMHA gel. The study focus on the effective combination of HAPs as a carrier for sustained GHK-Cu delivery and the anti-inflammatory properties of GHK-Cu. GHK-Cu@CMHA exhibits sustained release properties for 7 days, which ensures prolonged therapeutic effects, minimizes peptide waste and reduces injection frequency, with good flowability and injectability. In the model of LPS-induced inflammation model in vivo and in vitro, GHK-Cu@CMHA gel reduced levels of inflammatory factors and Reactive oxygen species (ROS) levels decreased, while superoxide dismutase (SOD) activity was enhanced. In this process, H&E staining and Masson staining revealed significant collagen deposition. These findings further confirm that GHK-Cu@CMHA is a novel injectable soft tissue filler with good anti-inflammatory and antioxidant properties, which holds well potential for inflammation inhibition. © 2025, The Authors. All rights reserved.

关键词：