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Self-assembled uniform double-shelled Co_(3)V_(2)O_8 hollow nanospheres as anodes for high-performance Li-ion batteries

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Rare Metals 2021年第12期40卷 3485-3493页

作者： Hao Zheng Xiao Chen Yun Yang Lin Li Chuan-Qi Feng Shi-Quan Wang Key Laboratory of Functional Materials and Chemistry for Performance and Resources of the Guizhou Education Department Anshun UniversityAnshun 561000China Key Laboratory for Synthesis and Applications of Organic Functional Molecules Hubei UniversityWuhan 430062China e-mail:cfeng@***

Hollow micro-/nanostructures have achieved great success in the field of renewable battery materials by reducing the volume change and promoting the ion ***-shelled Co_(3)V_(2)O__(8)hollow nanospheres(CVODSS)were synthesized using a facile solvothermal method followed by a thermal treatment in the absence of any ***,two other architectures of hollow nanospheres and nanoparticles were obtained by changing the annealing *** from the desired hollow structure,the CVO-DSS electrode exhibits excellent lithium storage properties as an *** exhibits a reversible discharge capacity of 1210 m Ah·g^(-1)at200 m A·g^(-1)after 100 cycles and a satisfactorily high rate capacity of 628 m Ah·g^(-1)after 800 cycles at 5000 m A·g^(-1).These hollow nanostructures can efficiently enhance the contact area of the electrolyte/electrode interface,promote the diffusion of lithium ions and electrons and slow down the capacity loss during long cycles.

关键词： Co_(3)V_(2)O_8 Hollow nanospheres double-shelled Anode materials Electrochemical properties

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Synthesis of Polyurethane/Poly(urea-formaldehyde) double-shelled Microcapsules for Self-healing Anticorrosion Coatings

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Chinese Journal of Polymer Science 2020年第1期38卷 45-52,I0006页

作者： Yan Song Kai-Feng Chen Jing-Jing Wang Yuan Liu Tao Qi Guo Liang Li National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing WO 190China Xiamen Advanced Materials Academy of Luoyang Ship Material Research Institute Xiamen 361101China Science and Technology on Marine Corrosion and Protection Laboratory Qingdao 266101China

One-component, catalyst-free self-healing coatings with double-shelled polymer microcapsules have drawn considerable attention due to wide applications. In this work, the synthesis parameters of double-shelled polymer microcapsules and the mechanism of the self-healing process were systematically investigated. Apart from the chemical structure of the microcapsule shell, the shell thickness, the microcapsule size,and the core fraction could affect the self-healing anticorrosion properties. The synthesis parameters were further optimized in terms of the agitation rate, p H, weight ratio of core to shell, and temperature. Under these conditions, the microcapsule shell consisting of a rough surface formed by poly(urea-formaldehyde) and a smooth inner wall by polyurethane was prepared. The size of the microcapsules and core fraction were calculated to be approximately 30 μm and 75%, respectively. The self-healing anticorrosion coating incorporating as-synthesized microcapsules exhibited corrosion resistance in artificially scratched areas, which was further characterized by electrochemical impedance spectroscopy.

关键词： double-shelled Microcapsules Anticorrosion Self-healing

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维普期刊数据库

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Deformable double-shelled hollow mesoporous organosilica nanocapsules:A multi-interfacial etching strategy

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Chinese Chemical Letters 2021年第3期32卷 1101-1105页

作者： Zhihao Feng Zhaogang Teng Yuyuan Shi Wenhui Shi Xiaodan Su Guangming Lu Lianhui Wang Lixing Weng Key Laboratory for Organic Electronics&Information Displays and Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Centre for Advanced MaterialsNanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023China College of Geography and Biological Information Nanjing University of Posts and TelecommunicationsNanjing 210046China Department of Medical Imaging Jinling HospitalSchool of MedicineNanjing UniversityNanjing 210002China

Multishelled hollow structures have drawn increasing interest because of their peculiar compartmentation environments and physicochemical *** this work,deformable double-shelled hollow mesoporous o rganosilica nanocapsules(DDHMONs)were succes s fully synthesized by a multi-interfacial etching *** obtained DDHMONs have a double-shelled structure with aninorganic-organic hybrid framework,a uniform outer layer(~320 nm)and inner layer(~180 nm),ordered mesochannels(~2.21 nm),and a large specific surface area(~1233 m^(2)/g).In vitro toxicity tests show that the DDHMONs have excellent biocompatibility when coincubated with human breast cancer *** addition,the anti cancer substance doxorubicin(DOX)can be highly loaded in DDHMONs(~335μg/mg).The results from flow cytometry together with confocal laser scanning microscopy show that DOX can be efficiently delivered into MCF-7 cells by DDHMONs,thus improving chemotherapeutic efficiency and demonstrating that DDHMONs have potential nanomedicine applications as anticancer agents.

关键词： Hollow structure Mesoporous double-shelled Organosilica Anticancer

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