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Coarsening behavior of（Ni,Co）2Si particles in Cu-Ni-Co-Si alloy during aging treatment

Rare Metals 2019年第11期38卷 1062-1069页

作者： Xiang-Peng Xiao Hai Xu Jin-Shui Chen Jun-Feng Wang Jiao Lu Jiao-Bo Zhang Li-Jun Peng Institute of Engineering Research Jiangxi University of Science and TechnologyGanzhou 341000China School of Materials Science and Engineering Jiangxi University of Science and TechnologyGanzhou 341000China State Key Laboratory for Fabrication and Processing of Nonferrous Metals General Research Institute for Nonferrous MetalsBeijing 100088China

The coarsening behavior of(Ni,Co)2Si particles in Cu-Ni-Co-Si alloy was investigated by experimental observations and coarsening kinetics calculations when aged at 450,500,550 and 600℃ for different *** results show that the critical particle radius for coherence mismatch is found to be 10.3 nm,and particles larger than 25 nm are generally *** relationship of(Ni,Co)2Si particles size and aging time follows Lifshitz,Slyosov and Wagner(LSW) *** particle size distributions fit well to the LSW theoretical *** activation energy for(Ni,Co)2Si coarsening is accurately determined to be(216.21 ± 5.18)kJ mol-1 when considering the effect of temperature on the solution concentrations in *** coarsening of(Ni,Co)2Si particles in Cu-Ni-Co-Si alloy is controlled by diffusion of Ni,Co and Si in Cu *** growth of particles for long durations suggests that vacancies can be trapped within the structure for long time despite their mobility.

关键词： Coarsening behavior (Ni,Co)2Si particles Coherence mismatch LSW theory Particle size distributions

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Modeling and simulation of two port proportional slip-in cartridge valve based on AMESim 2

Modeling and simulation of two port proportional slip-in car...

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2nd International Conference on Mechanical, Electric and Industrial Engineering, MEIE 2019

作者： Wang, Wenzhu Wu, Rendong Yuan, Chaolong Chang, Baohua Du, Dong Department of Mechanical Engineering Tsinghua University Beijing100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China

Two port proportional slip-in cartridge valves are critical components of the heavy duty press hydraulic system. Their performance, especially the static flow rate under different valve opening size and the valve response time, is important to the press velocity control precision. So, it is necessary to build an accurate model of the valve to analyse different parameters' influences on the valve performance. Based on the analysis of the valve structure and working principle, the valve model is established by the AMESim. The valve flow rate under different valve opening size ratio is calculated using the simulation model. The rated flow rate calculated by the simulation model is 0.33% less than the sample value, and the variation trend of the calculated flow rate curve is consistent with the manual curve. This demonstrates the considerable effectiveness of the valve simulation model. Then, the influences of the spring stiffness, the pilot oil pressure and the pilot valve gain on the valve poppet response time are analysed using the simulation model, respectively. This research may offer the basis for the whole hydraulic system building and control strategy designing. © 2019 IOP Publishing Ltd.

关键词： Flow rate

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Editor's note to“A review of efficient electrocatalysts for the oxygen evolution reaction at large current density”[DeCarbon 5(2024)100062]

DeCarbon

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DeCarbon 2024年第4期6卷 66-66页

作者： Youtao Yao Jiahui Lyu Xingchuan Li Cheng Chen Francis Verpoort John Wang Zhenghui Pan Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070PR China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya572000PR China Hubei Key Laboratory of Fuel Cell Wuhan University of TechnologyWuhan430070PR China Department of Materials Science and Engineering National University of Singapore117574SingaporeSingapore Institute of Materials Research and Engineering(IMRE) A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis WaySingapore138634Singapore National University of Singapore(Chongqing)Research Institute Chongqing401123PR China School of Materials Science and Engineering Tongji UniversityShanghai201804PR China

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Review on the 3-D simulation for weft knitted fabric

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Journal of Engineered Fibers and Fabrics 2021年第16期16卷

作者： Sha, Sha Geng, Anqi Gao, Yuqin Li, Bin Jiang, Xuewei Tao, Hui Luo, Lei Yuan, Xiaohong Ke, Huizhen Hu, Xinrong Deng, Zhongmin Chen, Zhi State Key Laboratory of New Textile Materials and Advanced Processing Technologies Key Laboratory of Textile Fiber Product Ministry of Education Wuhan Textile University WuhanHubei China Wuhan Textile and Apparel Digital Engineering Technology Research Center School of Fashion Wuhan Textile University WuhanHubei China Engineering Research Center of Hubei Province for Clothing Information Wuhan Textile University WuhanHubei China Fujian Key Laboratory of Novel Functional Textile Fibers and Materials Engineering Research Center of Textile and Clothing Fujian Province University Minjiang University Fuzhou China

There are different kinds of geometrical models and physical models used to simulate weft knitted fabrics nowadays, such as loop models based on Pierce, piecewise function, spline curve, mass-spring model, and finite element analyses (FEA). Weft knitting simulation technology, including modeling and yarn reality, has been widely adopted in fabric structure designing for the manufacturer. The technology has great potentials in both industries and dynamic virtual display. The present article is aimed to review the current development of 3-D simulation technique for weft knitted fabrics. © The Author(s) 2021.

关键词： Knit fabrics

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Frontispiz: A Recyclable and Scalable High-Capacity Organic Battery

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Angewandte Chemie 2023年第27期135卷 e202382761-e202382761页

作者： Dr. Yuan Chen HuiChao Dai Dr. Kun Fan Guoqun Zhang Dr. Mi Tang Yanbo Gao Chengyang Zhang Linnan Guan Prof. Minglei Mao Prof. Huan Liu Prof. Tianyou Zhai Prof. Chengliang Wang School of Integrated Circuits School of Optical and Electronic Information Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan 430074 China Wenzhou Advanced Manufacturing Institute Huazhong University of Science and Technology Wenzhou 325035 China Hubei Key Laboratory of Polymer Materials School of Materials Science and Engineering Hubei University Wuhan 430062 China State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

Aqueous Batteries. An organic electrode material for scalable aqueous batteries is proposed by Chengliang Wang et al. in their Research Article (e202302539). The organic electrode can be recycled in any state of charge.

关键词： Organic batteries Organic zinc-ion batteries Azobenzene Recyclability Scalable application

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Single-Atom Iron Catalysts on Overhang-Eave Carbon Cages for High-Performance Oxygen Reduction Reaction

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advanced materials 2020年第19期132卷 7454-7459页

作者： Hou, Chun-Chao Zou, Lianli Sun, Liming Zhang, Kexin Liu, Zheng Li, Yinwei Li, Caixia Zou, Ruqiang Yu, Jihong Xu, Qiang Sakyo-ku Kyoto606-8501 Japan Graduate School of Engineering Kobe University Nada Ku Kobe Hyogo657-8501 Japan 2266-98 Anagahora Shimoshidami Moriyamaku Nagoya Aichi463-8560 Japan Laboratory of Quantum Materials Design and Application School of Physics and Electronic Engineering Jiangsu Normal University Xuzhou221116 China Beijing Key laboratory for Theory and Technology of Advanced Battery Materials Department of Materials Science and Engineering College of Engineering Peking University Beijing100871 China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry International Center of Future Science Jilin University Changchun130012 China

Single-atom catalysts have drawn great attention, especially in electrocatalysis. However, most of previous works focus on the enhanced catalytic properties via improving metal loading. Engineering morphologies of catalysts to facilitate mass transport through catalyst layers, thus increasing the utilization of each active site, is regarded as an appealing way for enhanced performance. Herein, we design an overhang-eave structure decorated with isolated single-atom iron sites via a silica-mediated MOF-templated approach for oxygen reduction reaction (ORR) catalysis. This catalyst demonstrates superior ORR performance in both alkaline and acidic electrolytes, comparable to the state-of-the-art Pt/C catalyst and superior to most precious-metal-free catalysts reported to date. This activity originates from its edge-rich structure, having more three-phase boundaries with enhanced mass transport of reactants to accessible single-atom iron sites (increasing the utilization of active sites), which verifies the practicability of such a synthetic approach. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

关键词： Carbon

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Sandwich-like CoAl-LDH/Ti 3 C 2 MXene composites enabling synergistic peroxymonosulfate activation for enhanced atrazine degradation

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Journal of Environmental Chemical Engineering 2025年第5期13卷

作者： Yu Zhou Yongxin Lei Zhiyao Wu Qilin Han Fangdi Huang Leilei Yang Yanqiu Zhu Nannan Wang State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials School of Resources Environment and Materials Guangxi University Nanning 530004 China Department of Physics Guangxi University for Nationalities Nanning 530006 China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information Technology Sun Yat-sen University Guangzhou 510275 China College of Engineering Mathematics and Physical Sciences University of Exeter Exeter EX4 4QF UK

The ongoing influx of organic contaminants into water systems, propelled by swift industrial expansion and socio-economic advancement, has resulted in considerable environmental repercussions. In this study, a sandwich-like structure, CoAl-LDH/MXene (LM- x ), was synthesized via a one-step in-situ hydrothermal method to activate peroxymonosulfate (PMS) for the effective degradation of atrazine. The optimal LM-75/PMS system provides a remarkable degradation efficiency with complete ATZ degradation in 10 min. The unique structure of CoAl-LDH grown in-situ on MXene nanosheets not only exposes more active sites, but also realizes the strong interaction between Co and Ti. The system demonstrated excellent adaptability across a wide pH range (3−9) and under various saline-alkaline conditions, maintaining its superior ATZ degradation capability over multiple cycles. Radical quenching experiments and electron paramagnetic resonance results show that the radical pathway and non-radical pathway act together in ATZ degradation. X-ray photoelectron spectroscopy and X-ray absorption near-edge spectroscopy confirmed the special electron transfer properties of MXene, enhancing the redox cycling of Co in the catalyst. Additionally, three degradation pathways for ATZ were proposed. This study provided new ideas for the development of environmentally friendly Co-based catalysts.

关键词： CoAl-LDH Degradation mechanism MXene Peroxymonosulfate activation

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A Recyclable and Scalable High-Capacity Organic Battery

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Angewandte Chemie 2023年第27期135卷 e202302539-e202302539页

Redox organic electrode materials (OEMs) have attracted extensive attention for batteries due to the possibility to be designed with high performance. However, the practical application of OEMs requires rigor criteria such as low cost, recyclability, scalability and high performance etc. and hence seems still far away. Here, we demonstrate an OEM for high performance aqueous organic batteries. Quantification of the charge storage confirmed the storage of protons with fast reaction kinetics, thereby enabling the high performance at high mass loading. As a result, the laminated pouch cells delivered Ampere-hour-scale capacity with excellent cycling performance. Benefited from the small molecular nature and the stable both charged and discharged states, the electrodes can be recycled at any states of charge with high yields (more than 90 %). This work provides a substantial step in the practical applications of OEMs for the future sustainable batteries.

关键词： Organic batteries Organic zinc-ion batteries Azobenzene Recyclability Scalable application

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d-Electrons of Platinum Alloy Steering CO Pathway for Low-Charge Potential Li-CO2Batteries

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Angewandte Chemie 2024年第3期137卷

作者： Limin Liu Shenyu Shen Jiatian Li Ning Zhao Xiangkai Yin Hongyang Zhao Wei Yu Yaqiong Su Prof. Bao Yu Xia Prof. Shujiang Ding School of Chemistry Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education State Key Laboratory for Mechanical Behavior of Materials and National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology Xi'an Jiaotong University Xi'an 710049 China School of Chemistry and Chemical Engineering State Key Laboratory of Materials Processing and Die &Mould Technology Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology (HUST) Wuhan 430074 China

Aprotic Li-CO 2 batteries suffer from sluggish solid-solid co-oxidation kinetics of C and Li 2 CO 3 , requiring extremely high charging potentials and leading to serious side reactions and poor energy efficiency. Herein, we introduce a novel approach to address these challenges by modulating the reaction pathway with tailored Pt d -electrons and develop an aprotic Li-CO 2 battery with CO and Li 2 CO 3 as the main discharge products. Note that the gas-solid co-oxidation reaction between CO and Li 2 CO 3 is both kinetically and thermodynamically more favorable. Consequently, the Li-CO 2 batteries with CoPt alloy-supported on nitrogen-doped carbon nanofiber (CoPt@NCNF) cathode exhibit a charging potential of 2.89 V at 50 μA cm −2 , which is the lowest charging potential to date. Moreover, the CoPt@NCNF cathode also shows exceptional cycling stability (218 cycles at 50 μA cm −2 ) and high energy efficiency up to 74.6 %. Comprehensive experiments and theoretical calculations reveal that the lowered d -band center of CoPt alloy effectively promotes CO desorption and inhibits further CO reduction to C. This work provides promising insights into developing efficient and CO-selective Li-CO 2 batteries.

关键词： Li-CO2 batteries Electrochemical CO2 reduction Pt-based catalysts d-band center Reaction pathway

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Frontispiece: A Recyclable and Scalable High-Capacity Organic Battery

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Angewandte Chemie International Edition 2023年第27期62卷 e202382761-e202382761页

关键词： Organic batteries Organic zinc-ion batteries Azobenzene Recyclability Scalable application

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