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<p>This work described a facile synthesis of combining two-component nanoparticle of CuO and CuFe<sub>2</sub>O<sub>4</sub> (CFO) at three different pH values of 9, 10, and 11, followed by heat treatment at 750&#xa0;°C for 3&#xa0;h (denoted as CFO_9, CFO_10, CFO_11, respectively). X-ray diffraction and scanning electron microscope were used to analyze the morphological characteristics of the as-prepared samples. The results exhibited that CFO particle size decreased contrary to pH from 9 to 11. These three anode materials reached high initial capacities of over 1100 mAh g<sup>−1</sup>, and the capacities excellently remained over 500 mAh g<sup>−1</sup> through 100 cycles at the current rate of 100&#xa0;mA&#xa0;g<sup>−1</sup>. Moreover, the CFO_10 electrode showed a notably capacity retention with a capacity of 621 mAh g<sup>−1</sup> after 100 times of lithiation/delithiation, demonstrating that the CFO_10 composite is a promising material for anode electrodes in lithium-ion batteries<b>.</b></p>

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Synthesis of pH-controlled nanoparticles of CuO@CuFe2O4 as anode material for advanced lithium ion batteries

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • Hieu Trung Bui,
  • Ngoc Trung Tran,
  • Thi My Dung Ngo,
  • Anh Huy Phan,
  • Hai Dang Ngo,
  • Dang Manh Le,
  • Thuy-An Nguyen,
  • Ngoc Quang Tran,
  • Dang L. T. Nguyen,
  • Tuan Loi Nguyen

摘要

This work described a facile synthesis of combining two-component nanoparticle of CuO and CuFe2O4 (CFO) at three different pH values of 9, 10, and 11, followed by heat treatment at 750 °C for 3 h (denoted as CFO_9, CFO_10, CFO_11, respectively). X-ray diffraction and scanning electron microscope were used to analyze the morphological characteristics of the as-prepared samples. The results exhibited that CFO particle size decreased contrary to pH from 9 to 11. These three anode materials reached high initial capacities of over 1100 mAh g−1, and the capacities excellently remained over 500 mAh g−1 through 100 cycles at the current rate of 100 mA g−1. Moreover, the CFO_10 electrode showed a notably capacity retention with a capacity of 621 mAh g−1 after 100 times of lithiation/delithiation, demonstrating that the CFO_10 composite is a promising material for anode electrodes in lithium-ion batteries.