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A surface engineering strategy for the stabilization of zinc metal anodes with montmorillonite layers toward long-life rechargeable aqueous zinc ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang Ruifeng Xu Xu Zhang Peiyu Wang Bao Yang Bingjun Yang Juan Yang Kailimai Su Pengjun Ma Yanan Deng Xianfeng Fan Wanjun chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energy Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Rechargeable aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energy ***,there are serious challenges for AZIBs,for instance zinc dendrite growth,hydrogen evolution reaction （hER）,and corrosion side ***,we propose a surface engineering modification strategy for coating the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving high cycling stability for rechargeable *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions migration,facilitating the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact angle （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving excellent cycling ***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding 1800 h long cycling under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g-1with excellent rate ***,this surface engineering modification strategy for enhancing the electrochemical performance of AZIBs represents a promising application.

关键词： Surface engineering strategy Montmorillonite layer Protection mechanism of Zn anode Cycling stability Aqueous zinc ion batteries

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Locally Enhanced Flow and Electric Fields Through a Tip Effect for Efficient Flow‑Electrode Capacitive Deionization

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Nano-Micro Letters 2025年第2期17卷 1-17页

作者： Ziquan Wang Xiangfeng chen Yuan Zhang Jie Ma Zhiqun Lin Amor Abdelkader Maria‑Magdalena Titirici Libo Deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai 200092People’s Republic of China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Department of Engineering Faculty of Science and TechnologyBournemouth UniversityTalbot CampusFern BarrowPooleEngland BH125BBUK Institut de Chimie de Nice UniversitéCôte d’AzurUMR CNRS 727228 Av.Valrose06108 NiceFrance Department of Chemical Engineering Imperial College LondonSouth Kensington CampusExhibition RdLondon SW72AZUK

Low-electrode capacitive deionization(FCDI)is an emerging desalination technology with great potential for removal and/or recycling ions from a range of ***,it still suffers from inefficient charge transfer and ion transport kinetics due to weak turbulence and low electric intensity in flow electrodes,both restricted by the current ***,a new tip-array current collector(designated as T-CC)was developed to replace the conventional planar current collectors,which intensifies both the charge transfer and ion transport *** effects of tip arrays on flow and electric fields were studied by both computational simulations and electrochemical impedance spectroscopy,which revealed the reduction of ion transport barrier,charge transport barrier and internal *** the voltage increased from 1.0 to 1.5 and 2.0 V,the T-CC-based FCDI system(T-FCDI)exhibited average salt removal rates(ASRR)of 0.18,0.50,and 0.89μmol cm^(-2) min^(-1),respectively,which are 1.82,2.65,and 2.48 folds higher than that of the conventional serpentine current collectors,and 1.48,1.67,and 1.49 folds higher than that of the planar current ***,with the solid content in flow electrodes increased from 1 to 5 wt%,the ASRR for T-FCDI increased from 0.29 to 0.50μmol cm^(-2) min^(-1),which are 1.70 and 1.67 folds higher than that of the planar current ***,a salt removal efficiency of 99.89%was achieved with T-FCDI and the charge efficiency remained above 95%after 24 h of operation,thus showing its superior long-term stability.

关键词： Flow-electrode Capacitive deionization Current collector Tip effect Desalination

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From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen Xin Zhang Lingcong Chao Liang chen Ding Zhang Tao Wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900h),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added

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(R)-3-氨基-2,3,4,5-四氢-1h-[1]-2-氧代苯并氮杂的合成

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中国医药工业杂志 2010年第2期41卷 85-87页

作者：李宗圣 Michael h. chen 首都经济贸易大学安全与环境工程学院北京100070 北京奥特康森药物科技服务有限公司北京100176

3,4-二氢-2h-萘-1-酮与盐酸羟胺反应后,在PPA中经Beckmann重排、碘代得到3-碘代-2,3,4,5-四氢-1h-[1]-2-氧代苯并氮杂(5),5经氨解、D-焦谷氨酸拆分、浓氨水处理后催化氢化还原,得到(R)-3-氨基-2,3,4,5-四氢-1h-[1]-2-氧代苯并氮杂,... 详细信息

3,4-二氢-2h-萘-1-酮与盐酸羟胺反应后,在PPA中经Beckmann重排、碘代得到3-碘代-2,3,4,5-四氢-1h-[1]-2-氧代苯并氮杂(5),5经氨解、D-焦谷氨酸拆分、浓氨水处理后催化氢化还原,得到(R)-3-氨基-2,3,4,5-四氢-1h-[1]-2-氧代苯并氮杂,总收率约44%,纯度98%,ee值99.5%。

关键词： (R)-3-氨基-2,3,4,5-四氢-1h--2-氧代苯并氮杂 生长激素促分泌素中间体拆分合成

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在欧洲联合环等离子体中杂质的极向不对称分布

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国外核聚变 2002年第4期 10-15页

作者： h.chen 梦兰

在欧洲联合环最佳化的剪切托卡马克等离子体中，在镍激光注入实验之后，实验上已经观测到镍离子的极向不对称分布。两类不对称性出现，在高约束模等离子体中早已观测到的第一类不对称性中，镍离子积聚在极向截面的外侧，这可由中性束注... 详细信息

在欧洲联合环最佳化的剪切托卡马克等离子体中，在镍激光注入实验之后，实验上已经观测到镍离子的极向不对称分布。两类不对称性出现，在高约束模等离子体中早已观测到的第一类不对称性中，镍离子积聚在极向截面的外侧，这可由中性束注入驱动的快环向等离子体转动予以充分解释。第二类不对称性在位置上是相反的：在射频加热的最佳化剪切等离子体中，已观测到镍离子积聚在极向截面的内侧上。

关键词：欧洲联合环等离子体杂质极向不对称分布托卡马克

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Modeling and Simulation of Space Target Optical Detection System

Modeling and Simulation of Space Target Optical Detection Sy...

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International Conference on Industrial Technology and Management Science(ITMS 2015)

作者： X.P.Du h.chen J.G.Zhao Department of Space Equipment the Academy of Equipment Department of Scientific Research the Academy of Equipment

An optical detection system is built by using model building method based on the modulation transfer function. The effects of space environment and noise model have been considered and added in this system. In this model, we solve the establishment of the complex imaging model problem in dynamic running environment. Besides, this system can meet the demand of different space target detection task and the performance of the different stages of life span parallel analysis and evaluation system. The numerical simulations are performed to check the validity and capability of the proposed optical detection system.

关键词： Space target Dynamic environment Optical detection system

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Measuring nanoscale friction at graphene step edges

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Friction 2020年第4期8卷 802-811页

作者： Zhe chen Seong h.KIM Department of Chemical Engineering and Materials Research Institute Pennsylvania State UniversityUniversity ParkPA 16802USA

Although graphene is well known for super-lubricity on its basal plane, friction at its step edge is not well understood and contradictory friction behaviors have been reported. In this study, friction of mono-layer thick graphene step edges was studied using atomic force microscopy (AFM) with a Si tip in dry nitrogen atmosphere. It is found that, when the tip slides over a'buried' graphene step edge, there is a resistive force during the step-up motion and an assistive force during the step-down motion due to the topographic height change. The magnitude of these two forces is small and the same in both step-up and step-down motions. As for the'exposed' graphene step edge, friction increases in magnitude and exhibits more complicated behaviors. During the step-down motion of the tip over the exposed step edge, both resistive and assistive components can be detected in the lateral force signal of AFM if the scan resolution is sufficiently high. The resistive component is attributed to chemical interactions between the functional groups at the tip and step-edge surfaces, and the assistive component is due to the topographic effect, same as the case of buried step edge. If a blunt tip is used, the distinct effects of these two components become more prominent. In the step-up scan direction, the blunt tip appears to have two separate topographic effects–elastic deformation of the contact region at the bottom of the tip due to the substrate height change at the step edge and tilting of the tip while the vertical position of the cantilever (the end of the tip) ascends from the lower terrace to the upper terrace. The high-resolution measurement of friction behaviors at graphene step edges will further enrich understanding of interfacial friction behaviors on graphene-covered surfaces.

关键词： friction graphene step edge atomic force microscopy tip bluntness

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Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed honeycomb Structure for highly Efficient Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 533-547页

作者： Xiao You huiying Ouyang Ruixiang Deng Qiuqi Zhang Zhenzhong Xing Xiaowu chen Qingliang Shan Jinshan Yang Shaoming Dong State Key Laboratory of high Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Academy of Sciences Beijing 100039People’s Republic of China

With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave ***,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene *** unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric ***,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 Ghz(from 8.8 to 18.0 Ghz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 Ghz after annealing in air environment at 600℃ for 10 h.

关键词： hierarchical porous structure Interface high-temperature resistance Graphene aerogel composites Electromagnetic wave absorption

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JET优化剪切等离子体中强弱内热垒的杂质输运

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国外核聚变 2001年第5期 35-48页

作者： h.chen 晓岚

介绍了JET优化剪切等离子体中低电荷杂质和高电荷杂质粒种的粒子输运分析的结果，等离子体中心的杂质含量对内输运垒强度是敏感的，在强输运垒等离子体中，中心的扩散系数比弱输运垒等离子体中的扩散系数低一个数量级，在等离子体中心... 详细信息

介绍了JET优化剪切等离子体中低电荷杂质和高电荷杂质粒种的粒子输运分析的结果，等离子体中心的杂质含量对内输运垒强度是敏感的，在强输运垒等离子体中，中心的扩散系数比弱输运垒等离子体中的扩散系数低一个数量级，在等离子体中心杂质输运接近于新经典输运预言，而在等离子体边缘它比新经典理论值高得多，为了解释这些测量结果，在输运垒附近需要一个对流项，这些数据支持E×B剪切率抑制湍流的理论。

关键词：杂质输运 JET优化剪切等离子体强输运垒弱输运垒托卡马克装置反磁剪切

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A strategy to improve the accuracy of digital simulation for electroanalytical chemistry

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Chinese Journal of Chemistry 1997年第3期15卷 250-259页

作者： Fang, h.chen, hY Deportment of Chemistry Nanjing University Nanjing Jiangsu 210093 China [*]Deportment of Chemistry Nanjing University Nanjing Jiangsu 210093 China

A strategy for digital simulation methods was presented for solving partial differential equations, called as IPBFP which is to insert M points before the first time point of the usual way, to decrease simulation errors. The theoretical analysis and simulation results show that it can improve the fully implicit method with any dimensionless diffusion coefficient lambda, Crank-Nicolson method with large lambda and Saul'yev method with small lambda. The IPBFP is convenient to arrange the simulation time points flexibly and reduce calculation time and errors. This approach can combine the merits of non-uniform time grid and uniform time grid methods in simulation for electrochemical studies.

关键词： IPBFP digital simulation time grid electrode process

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