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Switching Reaction Pathway of Medium-Concentration Ether Electrolytes to Achieve 4.5 V Lithium Metal Batteries (vol 23, pg 8481, 2023)

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NANO LETTERS 2023年第21期23卷 10097-10097页

作者： Jiang, Zhipeng Deng, Yu Mo, Jisheng Zhang, Qingan Zeng, Ziqi Li, Yongtao Xie, Jia School of Materials Science and Engineering Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of Technology Maanshan 243002 China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China

Pursuing high-energy-density lithium metal batteries (LMBs) necessitates the advancement of electrolytes. Despite demonstrating high compatibility with lithium metal anodes (LMAs), ether-based electrolytes face challenges in achieving stable cycling at high voltages. Herein, we propose a strategy to enhance the high-voltage stability of medium-concentration (∼1 M) ether electrolytes by altering the reaction pathway of ether solvents. By employing a 1 M lithium difluoro(oxalato)borate in dimethoxyethane (LiDFOB/DME) electrolyte, we observed that LiDFOB displays a pronounced tendency for decomposition over DME, leading to a modification in the decomposition pathway of DME. This modification facilitates the formation of a stable organic–inorganic hybrid interface. Utilizing such an electrolyte, the Li-LCO cell demonstrates a discharge specific capacity of 146 mAh g–1 (5 C) and maintains retention of 86% over 1000 cycles at 2 C under a 4.5 V cutoff voltage. Additionally, the optimized ether electrolyte demonstrated outstanding cycling performance in Li-LCO full cells under practical conditions.

关键词： lithium metal battery electrolyte high-voltage ether interface

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Precipitating thermally reinforcement phase in aluminum alloys for enhanced strength at 400℃

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Journal of Materials science & technology 2024年第5期172卷 71-82页

作者： Xiang Su Yuan Lei Yang Chen Hongjie Qu Zhixiang Qi Gong Zheng Xu Liu Henggao Xiang Guang Chen National Key Laboratory of Advanced Casting Technologies MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials TechnologyEngineering Research Center of Materials Behavior and DesignMinistry of EducationNanjing University of Science and TechnologyNanjing 210094China School of Aviation and Mechanical Engineering Changzhou Institute of TechnologyChangzhou 213032China

Heat-resistant aluminum alloys are widely used in aerospace and automotive fields for manufacturing hot components due to their advantages in lightweight design and energy ***,the high-temperature strength of existing cast aluminum alloys is always limited to about 100 MPa at 350℃due to coarsening and transformation of strengthening ***,we reveal that the yield strength and ultimate tensile strength of the T6 state Al-8.4Cu-2.3Ce-1.0Mn-0.5Ni-0.2Zr alloy at 400◦C increase by 34%and 44%after re-aging at 300℃for 100 h,and its thermal strength exhibits distinguished ad-vantage over traditional heat-resistant aluminum *** enhanced elevated-temperature strength is attributed to the reprecipitation of the Ni-bearing T-Al_(20)Cu_(2)Mn_(3)phase,whose number density increases over one *** significant segregation of Ni,Ce,and Zr elements at the interfaces helps improve the thermal stability of the T *** thermostable T phase effectively strengthens the matrix by in-hibiting dislocation ***,a highly interconnected 3D intermetallic network along the grain boundaries can still remain after long-term re-aging at 300℃,which is conducive to imposing a drag on the grain boundaries at high *** finding offers a viable route for enhancing the elevated-temperature strength of heat-resistant aluminum alloys,which could provide expanded opportunities for higher-temperature applications.

关键词： Aluminum alloys Precipitation Thermally reinforcement phase Re-aging treatment High-temperature strength

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Cu doped VO 2 cathode materials for ultra-stable and high-performance aqueous zinc-ion batteries

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Journal of Electroanalytical Chemistry 2025年

作者： Zihan Wang Mengwei Chang Heshun Geng Cui Peng Pengcheng Song Fang Hu Junhua You Kai Zhu School of Materials Science and Engineering Shenyang University of Technology Shenyang Key Laboratory of Advanced Energy Materials and Renewable Resources Shenyang 110870 Liaoning China Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150010 Heilongjiang China

Vanadium-based materials are considered to be the most promising cathode materials for aqueous zinc-ion batteries. Unfortunately, the existence of electrostatic forces between vanadium-based materials materials and zinc ions, as well as their poor intrinsic electrical conductivity and unstable structure, have further hindered the development of vanadium-based materials. Hence, a lamellar nanoflower-structured Cu 0.05 VO 2 cathode material is prepared by Cu doped VO 2 in the tunnel to improve its electrical conductivity and weaken the electrostatic repulsion force between it and zinc ions. The Cu 0.05 VO 2 cathode can deliver a high capacity of up to 416 mAh g −1 at 0.5 A g −1 and maintain a capacity retention rate of 95.4 % after 6000 cycles at 10 A g −1 . Experimental and theoretical calculations show that both the electrical conductivity and the zinc ion transport rate are greatly enhanced in Cu 0.05 VO 2 . Therefore, the Cu 0.05 VO 2 cathode material shows potential for use in AZIBs.

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Finite element simulation and experimental test of the wear behavior for self-lubricating spherical plain bearings

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Friction 2018年第3期6卷 297-306页

作者： Yahong XUE Jigang CHEN Sumin GUO Qingliang MENG Junting LUO School of Mechanical Engineering Yanshan University Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain Bearing Yanshan University Education Ministry Key Laboratory of Advanced Forging and Stamping Technology and Science Yanshan University

In this study, based on the classical Archard adhesion wear theory, a three-dimensional finite element model was established, with the aim of simulating the failure process of self-lubricating spherical plain bearings in the swinging wear condition. The results show that the self-lubricating spherical plain bearings go through two different stages during the wear process, namely, initial wear stage and stable wear stage. Because the large contact points wear out during the initial wear stage, the maximum contact pressure decreases as the test period increases. The relatively larger wear depth region shows elliptical distribution, and the maximum distribution appears in the central contact area. The wear depth reaches 0.974 mm after swinging 25,000 times. PTFE fibers, which possess a good friction performance but poor abrasion resistance, abundantly exist on the friction surfaces of the fabric liner. Consequently, the friction torque during the initial wear stage is slightly smaller than the friction torque during the stable wear stage; however, the wear rate during the initial wear stage is high. The reliability and effectiveness of the finite element model are verified by experiment. The developed finite element model can be used for the analysis of the wear mechanisms of bearings and the prediction of the service life of bearings.

关键词： spherical plain bearing wear mechanisms wear depth contact pressure simulation

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Efficient Electrophotochemical Microreactor for Direct Green Production of Phenol from Benzene

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Industrial and engineering Chemistry Research 2025年

作者： Ding, Zhiming Wang, Danfeng Wang, Gang Du, Runjuan Fan, Chuanting Zhang, Yaheng Zhang, Jie Tang, Zhiyong Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201203 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 China School of Chemistry and Material Science University of Science and Technology of China Anhui Hefei 230026 China Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials Science Anhui Normal University Wuhu 241000 China Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province Institute of Surface Micro and Nano Materials College of Chemical and Materials Engineering Xuchang University Henan Xuchang 461000 China

Electrophotocatalysis, a burgeoning and sustainable technique in the field of organic synthesis, faces challenges in practical implementation due to technological and equipment limitations. This work introduces the design and engineering of an electrophotocatalytic flow microreactor for efficient synthesis of phenol from benzene in one step. The study explored the effects of microreactor configuration and various parameters, such as applied voltage, light intensity, and the concentrations of oxidant DDQ and electrolyte TBABF₄. The innovative microreactor, characterized by a compact electrode gap and an expansive optical window, achieved a high phenol yield of 21.2% within a short residence time of 10 min, a significant improvement over the 14.3% yield obtained by a batch reactor in 6 h. The microreactor delivered a remarkable phenol productivity of 116.8 mmol h^-1 L^-1, outperforming all previous electrophotocatalytic synthesis records. Furthermore, a techno-economic analysis demonstrated that small-scale electrophotocatalytic synthesis of phenol reduced the per-unit production cost, displaying economic advantages competitive with the traditional cumene method. This work provides valuable insights into the engineering of flow microreactors for electrophotocatalysis and offers guidance for the potential industrial-scale application of electrophotocatalytic flow reactions. © 2025 American Chemical Society.

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Preparation of micro-patterned surfaces of Si-N-O films and their influence on adhesion behavior of endothelial cells

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science China(Technological sciences) 2010年第1期53卷 257-263页

作者： ZHENG Nan,YANG Ping,WANG QiYi,YANG ZhongHai & HUANG Nan key laboratory of advanced technology for Materials of Education Ministry,key laboratory of Artificial Organ surface engineering of Sichuan,School of Materials science and engineering,Southwest Jiaotong University,Chengdu 610031,China 1. Key Laboratory of Advanced Technology for Materials of Education Ministry Key Laboratory of Artificial Organ Surface Engineering of Sichuan School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China

Microgrooves were prepared on Si(100) surface by photolithography and wet ***,Si-N-O films were deposited on the microgrooves by unbalanced magnetron sputtering(UBMS) and micro-patterned surfaces of Si-N-O films were *** size of the micropatterns was measured by surface *** chemical composition of Si-N-O films were characterized by X-ray photoelectron spectrometry(XPS) and the wettability of the micropatterned surfaces was evaluated by contact angle *** behavior of endothelial cells adhered on the micro-patterned surfaces,including cells adhesion,proliferation and orientation,was evaluated by cell culture test and Alamar blue *** results showed that the amount and activity of endothelial cells on micro-patterned samples were higher than those on flat *** one day's incubation,the cells were well guided along the *** days later,most of the cells grew across the grooves and contacted each *** activity was also much higher than that on flat *** was suggested that the adhesion and proliferation of endothelial cells could be effectively enhanced by micropattern method.

关键词： micropatterns Si-N-O film endothelial cell unbalanced magnetron sputtering

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Microstructure evolution of extruded Mg-RE-Ag alloy during short-time heat treatment

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Journal of Rare Earths 2024年第12期42卷 2350-2361,I0006页

作者： Zehua Li Jinghuai Zhang Shujuan Liu Jiaming Hao Liyuan Liu Yuying He Haodong Zhang Xingkai Jiao Xiaobo Zhang Ruizhi Wu Key Laboratory of Superlight Material and Surface Technology Ministry of EducationCollege of Material Science and Chemical EngineeringHarbin Engineering UniversityHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Nanjing Institute of TechnologyNanjing211167China

Microstructure regulation via short-time heat treatment is conducive to the optimization in the microstructure and properties of precipitable magnesium(Mg)alloys,but there is currently a lack of relevant *** this work,the microstructure evolution of a Mg-RE-Ag alloy during different short-time heat treatments was characterized and *** results show that extreme short-time heat treatment(ESHT,e.g.,2 min)at 450-480℃can greatly increase solute concentration in Mg matrix through the rapid re-dissolution of the second-phase and simultaneously maintain fine grains,while the ESHT at a too high temperature(e.g.,510℃)is not suitable due to excessive grain growth and coarse second phase regenerated at grain *** is found that 480℃is the approximate critical temperature for appropriate ESHT,and further prolongation of the time will lead to excessive grain *** is suggested that in addition to grain boundary migration,grain rotation is activated,resulting in the annihilation of high-angle grain boundaries with relatively low misorientation,as well as the reduction in the ability of the residual second phase to pin grain *** addition,the reasons for the abnormal grain boundary segregation and grain boundary continuous phase were analyzed from the perspective of interfacial *** study provides a basis for effective microstructure regulation of Mg-RE alloys.

关键词： Magnesium alloy Rare earths Microstructure Heat treatment Precipitates

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A new catalyst for urea oxidation: NiCo2S4 nanowires modified 3D carbon sponge

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Journal of Energy Chemistry 2020年第11期29卷 195-205页

作者： Biaopeng Li Congying Song Jianjun Rong Jing Zhao Hong-En Wang Ping Yang Ke Ye Kui Cheng Kai Zhu Jun Yan Dianxue Cao Guiling Wang Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Urea oxidation is a significant reaction for utilizing urea-rich wastewater or human urine as sustainable power sources which can ease the water eutrophication while generate electricity. A direct urea-hydrogen peroxide fuel cell is a new kind of fuel cell employing urea as fuel and hydrogen peroxide as oxidant which possesses a larger cell voltage. Herein, this work tries to promote the kinetics process of urea oxidation by preparing low-cost and high-efficient NiCo2S4 nanowires modified carbon sponge electrode. The carbon sponge used in this work with a similar three-dimensional multi-channel structure to Ni foam, is prepared by carbonizing recycled polyurethane sponge which is also a process of recycling waste. The performance of the prepared catalyst in an alkaline solution is investigated in a three-electrode *** the introduction of Co element to the catalyst, a reduced initial urea oxidation potential and a high performance are obtained. Furthermore, a direct urea-hydrogen peroxide fuel cell is assembled using the NiCo2S4 nanowires modified carbon sponge anode. Results indicate that the prepared catalyst provides a chance to solve the current problems that hinder the development of urea electrooxidation(high initial urea oxidation potential, low performance, and high electrode costs).

关键词： Carbon sponge Direct urea fuel cell Electrocatalyst NiCo2S4 nanowires Urea oxidation

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Lattice structures and electronic properties of CIGS/CdS interface:First-principles calculations

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Chinese Physics B 2014年第7期23卷 661-666页

作者：汤富领刘冉薛红涛路文江冯煜东芮执元黄敏 State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials Department of Materials Science and EngineeringLanzhou University of Technology Science and Technology on Surface Engineering Laboratory Lanzhou Institute of Physics State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences

Using first-principles calculations within density functional theory, we study the atomic structures and electronic properties of the perfect and defective （2VCu＋ Incu） CulnGaSe2/CdS interfaces theoretically, especially the interface states. We find that the local lattice structure of （2VCu＋ InCu） interface is somewhat disorganized. By analyzing the local density of states projected on several atomic layers of the two interfaces models, we find that for the （2VCu＋InCu） interface the interface states near the Fermi level in CulnGaSe2 and CdS band gap regions are mainly composed of interracial Se-4p, Cu-3d and S-3p orbitals, while for the perfect interface there are no clear interface states in the CulnGaSe2 region but only some interface states which are mainly composed of S-3p orbitals in the valance band of CdS region.

关键词： first-principles calculation CulnGaSe2/CdS density of states interface states

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Ultrasonication-assisted and gram-scale synthesis of Co-LDH nanosheet aggregates for oxygen evolution reaction

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Nano Research 2020年第1期13卷 79-85页

作者： Tian-Jiao Wang Xiaoyang Liu Ying Li Fumin Li Ziwei Deng Yu Chen Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education) Key Laboratory of Macromolecular Science of Shaanxi ProvinceShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an710062China School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an710062China

Electrochemical water splitting(EWS)is a highly clean and efficient method for high-purity hydrogen ***,EWS suffers from the sluggish and complex oxygen evolution reaction(OER)kinetics at *** present,the efficient,stable,and low-cost non-precious metal based OER electrocatalyst is still a great and long-term challenge for the future industrial application of EWS ***,we develop a simple and fast approach for gram-scale synthesis of flower-like cobalt-based layered double hydroxides nanosheet aggregates by ultrasonic synthesis,which show outstanding electrocatalytic performance for the oxygen evolution reaction in alkaline media,such as preeminent stability,small overpotential of 300 mV at 10 mA·cm^−2 and small Tafel slope of 110 mV·dec^−1.

关键词： electrochemical water splitting oxygen evolution reaction gram-scale synthesis layered double hydroxides nanosheet aggregates

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