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首页> 外文期刊>Journal of power sources >Sandwich-like honeycomb Co_2SiO_4/rGO/honeycomb Co_2SiO_4 structures with enhanced electrochemical properties for high-performance hybrid supercapacitor
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Sandwich-like honeycomb Co_2SiO_4/rGO/honeycomb Co_2SiO_4 structures with enhanced electrochemical properties for high-performance hybrid supercapacitor

机译：夹心状蜂窝CO_2SIO_4 / RGO /蜂窝CO_2SIO_4结构具有增强的高性能混合超级电容器的电化学性能

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摘要

Recent studies demonstrate that cobalt silicate-based materials are considered as the potential electrode materials for supercapacitors (SCs). However, improving the conductivity of Co2SiO4 remains a pressing priority. Herein, the sandwich-like honeycomb Co2SiO4/rGO/honeycomb Co2SiO4 structures are developed to improve the electrochemical capabilities of Co2SiO4 by using the sandwich-like GO/SiO2 as template and with a moderate hydrothermal method. Co2SiO4 nanosheets on the surface of rGO are interconnected to form the 3D honeycomblike structures. This strategy, "Two for one" construction, means that we put the two-phase (Co2SiO4 and rGO) into one-phase (Co2SiO4/rGO integrated composite) to avoid the low electronic transmission problem of the traditional two-phase hybrid method. The s-rGO/Co2SiO4 electrode exhibits the specific capacitance of 429 F g(-1) at 0.5 A g(-1), which is superior to the capacitance of Co2SiO4 and rGO + Co2SiO4. The s-rGO/Co2SiO4//AC HSC delivers the areal capacitances of 651 mF cm(-2) at 1 mA cm(-2), and powers the bulb more than 300 s, which is strongly related to the energized capacitance s-rGO/Co2SiO4. This work not only proves that the s-rGO/Co2SiO4 can improve the electrochemical properties of Co2SiO4, but also provides a strategy for the synthesis of metal silicates/rGO/metal silicates sandwich-like structures with enhanced electrochemical performances for energy storage and conversion.
机译：最近的研究表明，基于硅酸盐的材料被认为是超级电容器（SCS）的潜在电极材料。然而，提高CO2SIO4的电导率仍然是压制优先级。在此，开发了夹心状蜂窝CO2SIO4 / RGO /蜂窝CO2SIO4结构以通过使用夹心状GO / SiO 2作为模板和中等水热法来改善CO2SIO4的电化学能力。 RGO表面上的CO2SIO4纳米片互连以形成3D蜂窝细胞结构。这种策略“两个用于一个”结构，意味着我们将两相（CO2SIO4和RGO）放入单相（CO2SIO4 / RGO集成复合材料）中，以避免传统的两相杂交方法的低电子传输问题。 S-RGO / CO2SIO4电极在0.5Ag（-1）时表现出429fg（-1）的特定电容，其优于CO2SIO4和RGO + CO2SIO4的电容。 S-RGO / CO2SIO4 // AC HSC在1 mA cm（-2）时提供651 MF cm（-2）的面积电容，并为300秒的灯泡供电，这与通电电容强烈相关rgo / co2sio4。这项工作不仅证明S-RGO / CO2SIO4可以改善CO2SIO4的电化学性能，而且还提供了一种用于合成金属硅酸盐/ RGO /金属硅酸盐夹层结构的策略，其具有增强的电化学性能，用于储能和转换。

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  • 来源
    《Journal of power sources》 |2021年第30期|229643.1-229643.10|共10页
  • 作者

    Dong Xueying; Yu Yuting; Jing Xuyang; Jiang Hanmei; Hu Tao; Meng Changgong; Huang Chi; Zhang Yifu;

  • 作者单位

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Wuhan Inst Biol Prod Wuhan 430070 Peoples R China;

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

    Wuhan Univ Coll Chem & Mol Sci Wuhan 430072 Peoples R China;

    Dalian Univ Technol Sch Chem Engn State Key Lab Fine Chem Dalian 116024 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    rGO/Co2SiO4; Sandwich-like structure; Electrochemical properties; Hybrid supercapacitor;

    机译：Rgo / Co2sio4;夹心状结构;电化学特性;杂交超级电容器;

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