Scholarlink

<p>Experimentally, the electrochemical behaviour of rGO-doped CaCO<sub>3</sub> nanocomposite was determined. Reduced graphene oxide (rGO) was synthesized using graphite rod from the waste pencil battery. The graphite rod was used for the synthesis of rGO nanoparticles and also aided in the management and recycling of waste materials. However, the nanocomposite was synthesized by adding rGO into the calcium carbonate (CaCO<sub>3</sub>) matrix through a simple approach technique that is chemical-free, non-hazardous, simple, and rapid. The synthesized nanoparticles and nanocomposite were characterized using FESEM and FTIR. While the 5% rGO reinforced&#xa0;nanocomposite shows three distinct peaks around 1739&#xa0;cm<sup>−1</sup>, 1421&#xa0;cm<sup>−1</sup>, and 1216&#xa0;cm<sup>−1</sup> confirmed by FTIR analysis. The electrochemical analysis was done using three-electrode methods. Notably, the 5% rGO-doped nanocomposite exhibited excellent electrochemical performance, delivering specific capacitances of 55, 39, 22, and 14 F/g at current densities of 2, 3, 4, and 5 A/g, respectively.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Waste-derived rGO-doped calcium carbonate nanocomposites: a green approach for enhanced electrochemical energy storage

  • 期刊论文

  • 发表日期：

    2025年9月28日

查看全文
  • Swaroop Kumar Mandal,
  • Deepak Kumar

摘要

Experimentally, the electrochemical behaviour of rGO-doped CaCO3 nanocomposite was determined. Reduced graphene oxide (rGO) was synthesized using graphite rod from the waste pencil battery. The graphite rod was used for the synthesis of rGO nanoparticles and also aided in the management and recycling of waste materials. However, the nanocomposite was synthesized by adding rGO into the calcium carbonate (CaCO3) matrix through a simple approach technique that is chemical-free, non-hazardous, simple, and rapid. The synthesized nanoparticles and nanocomposite were characterized using FESEM and FTIR. While the 5% rGO reinforced nanocomposite shows three distinct peaks around 1739 cm−1, 1421 cm−1, and 1216 cm−1 confirmed by FTIR analysis. The electrochemical analysis was done using three-electrode methods. Notably, the 5% rGO-doped nanocomposite exhibited excellent electrochemical performance, delivering specific capacitances of 55, 39, 22, and 14 F/g at current densities of 2, 3, 4, and 5 A/g, respectively.