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Sacrificial template synthesis of hierarchical nickel hydroxidenitrate hollow colloidal particles for electrochemical energy storage

机译:牺牲模板合成等级镍羟基硝酸盐中空胶体颗粒用于电化学储存

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摘要

Synthesis of hollow colloidal particles with a well-defined structure in a single step is challenging and highly desired for numerous applications. We propose a simple and productive approach to synthesize hierarchical nickel hydroxidenitrate hollow colloidal particles (NiHNHCP) with tunable structure and property via a one-pot manner for the application in supercapacitor. In this approach, the formation of the NiHN shells and the dissolution of the melamine-formaldehyde (MF) template particles occur simultaneously and successively under a solvothermal condition with time. It is found that the nickel precursors can protonate the solvent, declining the pH and further causing the dissolution of the MF particles. Meanwhile, the nickel precursors transform into NiHN nanosheets that self-assemble into hierarchical shells exclusively at the surface of the MF particles. With the reactions proceeding, the NiHNHCP are yielded ultimately. These NiHNHCP are characterized with superior electrochemical performance, making them practically useful in the application of supercapacitor. (C) 2020 Elsevier Ltd. All rights reserved.
机译:在单一步骤中具有明确定义的结构的中空胶体颗粒的合成是挑战,并且对于许多应用来说是挑战性的。我们提出了一种简单富含高效的方法,通过一种通过单罐方式合成分层羟基硝酸中空胶体颗粒(NiHNHCP),通过单罐用于超级电容器的应用。在这种方法中,NiHn壳的形成和三聚氰胺 - 甲醛(MF)模板颗粒的溶解在随时间的溶剂热条件下同时且依次发生。结果发现镍前体可以质子溶剂质原料,下降pH并进一步引起MF颗粒的溶解。同时,镍前体转化为NiHN纳米片,其仅在MF颗粒表面上自动组装成分级壳。随着反应进行,最终产生NiHNHCP。这些NiHNHCP具有卓越的电化学性能,使它们实际上在应用超级电容器的应用中。 (c)2020 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Chemical Engineering Science》 |2020年第1期|共8页
  • 作者单位

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Key Lab Appl Surface &

    Colloid Chem Shaanxi Engn Shaanxi Key Lab Adv Energy Devices Natl Minist Ed Xian 710119 Peoples R China;

    Zhejiang A&

    F Univ Sch Engn Hangzhou 311300 Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Key Lab Appl Surface &

    Colloid Chem Shaanxi Engn Shaanxi Key Lab Adv Energy Devices Natl Minist Ed Xian 710119 Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Key Lab Appl Surface &

    Colloid Chem Shaanxi Engn Shaanxi Key Lab Adv Energy Devices Natl Minist Ed Xian 710119 Peoples R China;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Key Lab Appl Surface &

    Colloid Chem Shaanxi Engn Shaanxi Key Lab Adv Energy Devices Natl Minist Ed Xian 710119 Peoples R China;

    Zhejiang A&

    F Univ Sch Engn Hangzhou 311300 Peoples R China;

    Aalto Univ Dept Appl Phys FI-00076 Espoo Finland;

    Shaanxi Normal Univ Sch Mat Sci &

    Engn Key Lab Appl Surface &

    Colloid Chem Shaanxi Engn Shaanxi Key Lab Adv Energy Devices Natl Minist Ed Xian 710119 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Nickel hydroxidenitrate; Melamine-formaldehyde; Hollow colloidal particles; Sacrificial template method; Electrochemical energy storage;

    机译:镍氢硝酸镍;三聚氰胺 - 甲醛;中空胶体颗粒;牺牲模板方法;电化学能量存储;

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