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Modeling and Estimation of the Kinetics of Seeded solvent-mediated Phase Transformation in a Batch Crystallizer

Journal of Wuhan University of Technology(Materials Science) 2011年第5期26卷 872-878页

作者：唐明亮沈晓冬 State Key Laboratory of Materials-Oriented Chemical Engineering College of Materials Science and EngineeringNanjing University of Technology

Modeling the kinetics of the preparing process is necessary to produce a product with the appropriate particle properties and minimum production *** to the lackness of crystal size distributor （CSD） information,however,solvent-mediated phase transformation encounters difficulty in modeling the kinetics as compared to solution ***,a model was established by making the product CSD to move along by horizontal translation to obtain the CSDs of the stable phase in the process of *** the moment method was used to solve the popular balance equation,and the least square nonlinear regression method was applied to estimate the kinetics *** model has been successfully used to simulate the transformation of CaSO4？2H2O to α-CaSO4？1/2H2O in an isothermal seeded batch crystallizer with different stirring speeds,and it is beneficial to producing high performance α-CaSO4？1/2H2O crystals which have the right particle characteristics.

关键词： solvent-mediated crystallization kinetic modeling CSD calcium sulfate

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Fast, green microwave-assisted synthesis of single crystalline Sb_2Se_3 nanowires towards promising lithium storage

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Journal of Energy Chemistry 2019年第3期28卷 27-33页

作者： Wen Luo Jean-Jacques Gaumet Pierre Magri Sébastien Diliberto Feng Li Pascal Franchetti Jaafar Ghanbaja Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Laboratoire de Chimie et Physique: Approche Multi-échelles des Milieux Complexes Institut Jean Barriol Université de Lorraine Institut Jean Lamour UMR CNRS 7198 Université de Lorraine Campus Artem

In this work, a fast(0.5 h), green microwave-assisted synthesis of single crystalline Sb_2Se_3 nanowires was developed. For the first time we demonstrated a facile solvent-mediated process, whereby intriguing nanostructures including antimony selenide(Sb_2Se_3) nanowires and selenium(Se) microrods can be achieved by merely varying the volume ratio of ethylene glycol(EG) and H_2O free from expensive chemical and additional surfactant. The achieved uniform Sb_2Se_3 nanowire is single crystalline along [001]growth direction with a diameter of 100 nm and a length up to tens of micrometers. When evaluated as an anode of lithium-ion battery, Sb_2Se_3 nanowire can deliver a high reversible capacity of 650.2 m Ah g^(-1) at 100 mA g^(-1) and a capacity retention of 63.8% after long-term 1000 cycles at 1000 mA g^(-1), as well as superior rate capability(389.5 m Ah g^(-1) at 2000 mA g^(-1)). This easy solvent-mediated microwave synthesis approach exhibits its great universe and importance towards the fabrication of high-performance metal chalcogenide electrode materials for future low-cost, large-scale energy storage systems.

关键词： Microwave synthesis Sb2Se3 nanowires solvent-mediated process Lithium-ion battery High-performance anode

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