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Tris-based protic ionic liquids with multiple adsorption effects enabling excellent anti-wear and anti-corrosion performances

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Journal of Molecular Liquids 2025年 425卷

作者： Ge, Shanqin Chen, Long Li, Wei Cai, Qingzhao Gong, Genxiang Wu, Junhao Yu, Jinhong Nishimura, Kazuhito Jiang, Nan Cai, Tao School of Materials Science and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China State Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China Advanced Nano-processing Engineering Lab Mechanical Engineering Kogakuin University Tokyo192-0015 Japan

Molecular additives have garnered widespread attention in the fields of lubrication and corrosion protection due to their designable interfacial film-forming efficiency. Herein, three protic ionic liquids (PILs) with the same cation but different anions have been designed and synthesized. Their physicochemical properties, tribological properties and anti-corrosion properties were systematically investigated. Results demonstrated that under dynamic steel-on-steel friction conditions, the PILs can maximally reduce the running-in period, friction coefficient, and wear rate by 90 %, 40 %, and 97 %, respectively, compared to the commercial ionic liquid, BMIMPF6. Under static copper corrosion conditions, the PILs efficiently adsorb onto the copper surface and formed a dense oxide layer on its surface, thus achieving excellent corrosion protection for the copper substrates. Molecular dynamics (MD) simulation results indicate that the exceptional lubricity of PILs is due to its ability to rapidly adsorb onto the metal surface through multiple interaction sites on both its anionic and cationic components, thereby reducing the running-in period and swiftly establishing a lubricating film. This study provides insights into the development of molecular additives featuring multiple adsorption sites, with potential applications in the fields of tribology and corrosion engineering. © 2025

关键词： Tribology

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In-depth understanding of ionic liquid assisted perovskite film formation mechanism for two-step perovskite photovoltaics

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Journal of Energy Chemistry 2022年第10期31卷 599-606,I0015页

作者： Fei Wang Patrick Wai-Keung Fong Zhiwei Ren Hai-Lun Xia Kang Zhou Kai Wang Jiajie Zhu Xiaoxi Huang Xiao-Yuan Liu Hao Wang Yumeng Shi Haoran Lin Quanyao Zhu Gang Li Hanlin Hu Hoffman Institute of Advanced Materials Shenzhen PolytechnicShenzhen 518055GuangdongChina Department of Electronic and Information Engineering Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHong Kong 999077China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 43007HubeiChina International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060GuangdongChina The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057GuangdongChina Institute of Flexible Electronics Northwestern Polytechnical UniversityXi’an 710072ShannxiChina School of Physics Science and Engineering Tongji UniversityShanghai 200092China

Ionic liquids(ILs)have been widely applied in the one-step fabrication of perovskite with noticeable enhancement in the device ***,in-depth mechanism of ionic-liquid-assisted perovskite film formation is not well understood for also important two-step perovskite fabrication method,with better control of crystallization *** this work,we introduced ionic liquid methylammonium formate(MAFa)into organic salt to produce perovskite film via a two-step *** investigations on the influence of MAFa on the perovskite thin film formation mechanism were *** liquid is shown to assist lowering the perovskite formation enthalpy upon the density functional theory(DFT)calculation,leading to an accelerated crystallization process evidenced by in-situ UV-Vis absorption measurement.A gradient up-down distribution of ionic liquid has been confirmed by timeof-flight ***,besides the surface passivation,we found the HCOO-can diffuse into the perovskite crystals to fill up the halide vacancies,resulting in significant reduction of trap *** perovskite films with significantly larger grains and less defect density were prepared with the help of MAFa IL,and the corresponding device efficiency over 23%was obtained by two-step process with remarkably improved *** research work provides an efficient strategy to tune the morphology and opto-electronic properties of perovskite materials via ionic-liquid-assisted two-step fabrication method,which is beneficial for upscaling and application of perovskite photovoltaics.

关键词： Halide vacancies Perovskite solar cells Two-step method Ionic liquid

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Electrolyte Concentration Regulation Boosting Zinc Storage Stability of High-Capacity K0.486V2O5 Cathode for Bendable Quasi-Solid-state Zinc Ion Batteries

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Nano-Micro Letters 2021年第2期13卷 232-245页

作者： Linpo Li Shuailei Liu Wencong Liu Deliang Ba Wenyi Liu Qiuyue Gui Yao Chen Zuoqi Hu Yuanyuan Li Jinping Liu School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China School of Chemistry Chemical Engineering and Life Scienceand State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070People’s Republic of China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025People’s Republic of China

Vanadium-based cathodes have attracted great interest in aqueous zinc ion batteries(AZIBs)due to their large capacities,good rate performance and facile synthesis in large ***,their practical application is greatly hampered by vanadium dissolution issue in conventional dilute ***,taking a new potassium vanadate K0.486V2O5(KVO)cathode with large interlayer spacing(~0.95 nm)and high capacity as an example,we propose that the cycle life of vanadates can be greatly upgraded in AZIBs by regulating the concentration of ZnCl2 electrolyte,but with no need to approach“water-in-salt”*** the optimized moderate concentration of 15 m ZnCl2 electrolyte,the KVO exhibits the best cycling stability with ~95.02% capacity retention after 1400 *** further design a novel sodium carboxymethyl cellulose(CMC)-moderate concentration ZnCl2 gel electrolyte with high ionic conductivity of 10.08 mS cm^-1 for the first time and assemble a quasi-solid-state *** device is bendable with remarkable energy density(268.2 Wh kg^−1),excellent stability(97.35% after 2800 cycles),low self-discharge rate,and good environmental(temperature,pressure)suitability,and is capable of powering small *** device also exhibits good electrochemical performance with high KVO mass loading(5 and 10 mg cm^-2).Our work sheds light on the feasibility of using moderately concentrated electrolyte to address the stability issue of aqueous soluble electrode materials.

关键词： Electrolyte concentration regulation Quasi-solid-state Zn ion battery K0.486V2O5 Large interlayer spacing Cycling stability

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Microstructure,Mechanical,and Thermal Properties of B4C-TiB2-SiC Composites Prepared by Reactive Hot-pressing

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Journal of Wuhan University of technology(materials Science) 2020年第6期35卷 1031-1037页

作者： CAO Yaoqin HE Qianglong WANG Weimin China Helicopter Research and Development Institute Tianjin 300450China The State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

B4C-TiB2-SiC composites with excellent properties were prepared by reactive hot-pressing using B4C,TiC,and Si powders as the raw *** phase transition process was investigated by heating the powder mixture to different temperatures and combined with XRD ***2 and SiC phases were synthesized through an in situ reaction,and the mechanical and thermal properties were improved *** and mechanical properties were also studied,and the 60wt% B4C-21.6wt% TiB2-18.4wt% SiC composite showed a relative density of 99.1%,Vickers hardness of 34.6 GPa,flexural strength of 582 MPa,and fracture toughness of 5.08 MPa·m1/*** addition,the values of thermal conductivity and thermal expansion coefficient were investigated,respectively.

关键词： B4C-TiB2-SiC reactive hot pressing microstructures mechanical properties thermal properties

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Single-atomic Mn sites coupled with Fe_(3)C nanoparticles encapsulated in carbon matrixes derived from bimetallic Mn/Fe polyphthalocyanine conjugated polymer networks for accelerating electrocatalytic oxygen reduction

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Nano Research 2022年第9期15卷 7976-7985页

作者： Yuan Pan Min Li Wanliang Mi Minmin Wang Junxi Li Yilin Zhao Xuelu Ma Bin Wang Wei Zhu Zhiming Cui Hailiang Yin Yunqi Liu State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China Research Institute of Petroleum Processing SinopecBeijing 100083China School of Chemical&Environmental Engineering China University of Mining&TechnologyBeijing 100083China School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an 710119China State Key Lab of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Fuel Cell Technology of Guangdong Province South China University of TechnologyGuangzhou 510641China Academy of Science&Technology China University of Petroleum(East China)Dongying 257061China

The construction of robust coupling catalysts for accelerating electrocatalytic oxygen reduction reaction(ORR)through the modulation of the electronic structure and local atomic configuration is critical but remains ***,we report a facile and effective isolation-polymerization-pyrolysis(IPP)strategy for high-precision synthesis of single-atomic Mn sites coupled with Fe_(3)C nanoparticles encapsulated in N-doped porous carbon matrixes(Mn SAs/Fe_(3)C NPs@NPC)catalyst derived from predesigned bimetallic Fe/Mn polyphthalocyanine(FeMn-BPPc)conjugated polymer networks by solid-phase reaction *** from the synergistic effects between the single-atomic Mn-N_(4)sites and Fe_(3)C NPs as well as the confinement effect of NPC,the Mn SAs/Fe_(3)C NPs@NPC catalyst exhibited excellent electrocatalytic activity and stability for *** assembled Znair battery displayed larger power density of 186 mW·cm^(−2)than that of Pt/C+Ir/C-based *** also exhibits excellent stability without obvious voltage change after 106 cycles with 36 *** in-situ Raman spectra with in-situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS)characterization results indicated that the Mn-N_(4)site as an active site for the O_(2)adsorption-activation process,which effectively facilitates the generation of key*OOH intermediates and*OH desorption to promote the multielectron reaction *** calculation reveals that the excellent electrocatalytic performance originates from the charge redistribution and the d orbital shift resulting from Mn-Fe bond,which buffers the activity of ORR through the electron reservoir capable of electron donation or *** work paves a novel IPP strategy for constructing high-performance coupling electrocatalyst towards the ORR for energy conversion devices.

关键词： single atom catalyst nanoparticles electrocatalyst oxygen reduction zinc-air battery

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Highly Enhanced Electro-Catalytic Behavior of an Amide Functionalized Cu(Ii) Coordination Polymer on Oer at Large Current Densities

SSRN

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SSRN 2024年

作者： Afaq, Sheereen Ashiq, Faheem Shoukat, Wseem Malik, Wasif Mahmood Ahmed Ismail, Muhammad Ghafoor, Abdul Ashraf, Zohaib Sajjad, Muhammad Verpoort, Francis Chughtai, Adeel Hussain Institute of Chemical Sciences Bahauddin Zakariya University Multan60800 Pakistan Pakistan Moscow117198 Russia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center for Chemical and Material Engineering Wuhan University of Technology Wuhan430070 China

Extensive utilization of fossil fuels has led to their swift exhaustion, causing an escalating energy dilemma and significant environmental apprehensions. This situation has spurred advancement of sustainable energy conversion systems. Electrochemical water splitting is viewed as a capable method for generating hydrogen and oxygen intended for diverse electrochemical energy apparatus. A proficient, multifunctional electro-catalyst capable of facilitating both OERs) and HERs is of paramount importance. In this work, we report Cu-MOF electro-catalyst synthesized via the solvothermal route engaging OER activity using nickel foam (NF) in a 1 M KOH solution. Several analytical techniques were used to investigate the electro-catalysts BET, PXRD, FTIR and oxidation states. The water-splitting evaluation of the LOCOM-1 demonstrated exceptional oxygen activity concerning OER (oxygen evolution reaction), showcasing to extent a current density of 10 mAcm-2 a reduced of 286 mV over potential. Additionally, it exhibited a diminished onset potential of 1.37V attributable towards a decreased Tafel slope of 44.50 mVdec-1, and a proton couple electron transfer (PCET) channel that is stable over an extended period of time (1000 cycles of cyclic voltammetry and 40 hours of chronoamperometry). Therefore, this current endeavour might offer a new prospect or pathway for exploring the OER (Oxygen Evolution Reaction). © 2024, The Authors. All rights reserved.

关键词： Potassium hydroxide

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Ceramizable Cf/BPR composites with enhanced oxidation resistance up to 1670 °C

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Ceramics International 2025年

作者： Li, Junguo Zhao, Chenhan Jiang, Feng Zhang, Shiquan Yang, Suohui Xiang, Qianqian Li, Meijuan zhang, Jian Shen, Qiang School of Material Science and Engineering Wuhan University of Technology Wuhan430070 China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Ceramizable carbon fiber/boron-modified phenolic resin (Cf/BPR) composites are cost-effective and suitable for fabricating large-scale components, making them vital for thermal protection systems in aerospace vehicles. However, their thermal resistance requires further improvement. This study investigates the modification of Cf/BPR composites using ZrSi2, Al, and mica to enhance their thermal resistance. High-temperature static oxidation and oxyacetylene ablation tests are conducted to evaluate their high-temperature performance. The role of each filler on oxidation resistance is discussed. The results reveal that when ZrSi2 is added at 33.75 phr, Al at 3.75 phr, and mica at 5 phr, the prepared composite exhibits a flexural strength of 56 MPa after 20 min of static oxidation at 1600 °C, with excellent protection of the carbon fibers. After oxidation at 1670 °C, the flexural strength remains at 45 MPa, despite some degree of carbon fiber ablation. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Carbon fibers

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Approaching strain limit of two-dimensional MoS_(2) via chalcogenide substitution

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Science Bulletin 2022年第1期67卷 45-53,M0004页

作者： Kailang Liu Xiang Chen Penglai Gong Ruohan Yu Jinsong Wu Liang Li Wei Han Sanjun Yang Chendong Zhang Jinghao Deng Aoju Li Qingfu Zhang Fuwei Zhuge Tianyou Zhai State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Nano and Heterogeneous Materials Center School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China Department of Physics Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research CenterWuhan University of TechnologyWuhan 430070China Institutes of Physical Science and Information Technology Anhui UniversityHefei 231699China School of Physics and Technology Wuhan UniversityWuhan 430072China

Strain engineering is a promising method for tuning the electronic properties of two-dimensional(2 D)materials,which are capable of sustaining enormous strain thanks to their atomic ***,applying a large and homogeneous strain on these 2D materials,including the typical semiconductor MoS_(2),remains *** we report a facile strategy for the fabrication of highly strained MoS_(2) via chalcogenide substitution reaction(CSR)of MoTe_(2) with lattice *** MoS_(2)resulting from the sulfurized MoTe_(2) sustains ultra large in-plane strain(approaching its strength limit~10%)with great ***,the strain can be deterministically and continuously tuned to~1.5%by simply varying the processing *** to the fine control of our CSR process,we demonstrate a heterostructure of strained MoS_(2)/MoTe_(2)with abrupt ***,we verify that such a large strain potentially allows the modulation of MoS_(2) bandgap over an ultra-broad range(~1 e V).Our controllable CSR strategy paves the way for the fabrication of highly strained 2D materials for applications in devices.

关键词： Strain engineering 2D materials Chalcogenide substitution Controllable strain Lattice inheritance

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CdS nanosheets decorated with Ni@graphene core-shell cocatalyst for superior photocatalytic H_(2) production

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Journal of materials Science & technology 2020年第21期56卷 170-178页

作者： Tingmin Di Liuyang Zhang Bei Cheng Jiaguo Yu Jiajie Fan School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

A novel cocatalyst,*** nickel nanoparticles encapsulated in few-layer graphene(Ni@C),is obtained by carbonization of metal–organic frameworks(MOF)and leaching treatment of hydrochloric *** is selected as the cocatalyst for CdS nanosheets,forming CdS-Ni@C *** remarkably improves the photocatalytic activities of CdS nanosheets due to the synergistic effect of Ni nanoparticles and graphene *** addition,the Ni nanoparticles encapsulated by graphene layers effectively isolate Ni from the ambient,which avoids contamination and curbs *** larger work function of Ni@C and outstanding conductivity of graphene promote the electron transfer from CdS to Ni@C,suppressing the recombination of photogenerated carriers and facilitating the separation of photogenerated electronhole *** strategy by adopting this novel cocatalyst provides a new solution to the improvement of the photocatalytic hydrogen production.

关键词： CdS nanosheets Photocatalytic hydrogen production Nickel Graphene Core-shell cocatalyst Metal-organic frameworks(MOF)

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Bromine-Defect Induced High Sensitivity of Cs4PbBr6 Nanocrystals Humidity Sensor

SSRN

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SSRN 2024年

作者： Liu, Yueli Guo, Hongbing Mei, Aohan Chen, Keqiang Chen, Wen State Key Laboratory of Silicate Materials for Architectures School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya572024 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 China

Recently, all-inorganic halide perovskite materials have attracted much attention in the fields of humidity sensor due to their sensitive surface, tunable bandgap, high conductivity and excellent carrier mobility. However, their inherent instability and limited sensitivity restrict further application in electronic devices. Herein, we demonstrate a high-performance impedimetric humidity sensor based on an all-inorganic halide perovskite Cs4PbBr6 nanocrystals (NCs), which are obtained by anti-solvent method without long chain ligands. It is found that Br vacancy defects act as the active site to enhance the ability of adsorbing water molecules. The humidity sensor of Cs4PbBr6 NCs achieves high response value over 4 orders of magnitude at 11-98% relative humidity, short response/recovery time (8 s/6 s), favorable repeatability, excellent selectivity and good long-term stability. Moreover, high humidity sensing performance enables the humidity sensor of Cs4PbBr6 NCs to possess great potentials in breath monitor and noncontact switch application. © 2024, The Authors. All rights reserved.

关键词： Bromine compounds

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