Scholarlink

<p>Mesoporous <i>δ</i>-MnO<sub>2</sub>/MnC<sub>2</sub>O<sub>4</sub>·3H<sub>2</sub>O hybrid materials have been prepared by fast room temperature redox deposition method using ascorbic acid as reducing agent. The products were characterized by powder X-ray diffraction, Fourier transform infrared and Raman spectroscopy, scanning electron microscope, low-temperature nitrogen adsorption and thermogravimetric analysis. The BET surface area of hybrid materials depends on their composition and ranges between 133 and 275 m<sup>2</sup> g<sup>− 1</sup>. When used as an electrode for pseudocapacitors, <i>δ</i>-MnO<sub>2</sub>/MnC<sub>2</sub>O<sub>4</sub>·3H<sub>2</sub>O hybrid materials show very good electrochemical performance. The sample containing the minimum amount of <i>δ</i>-MnO<sub>2</sub> showed the maximum initial specific capacitance of 240&#xa0;F g<sup>− 1</sup> at current density of 1&#xa0;A g<sup>− 1</sup>. After 500 cycles the specific capacitance for sample exhibits 97% of the initial capacity indicating its high stability. The high specific capacitance and cycling performance of the hybrid materials are attributed to synergistic effect between <i>δ</i>-MnO<sub>2</sub> and MnC<sub>2</sub>O<sub>4</sub>·3H<sub>2</sub>O. The electrochemical tests demonstrate that <i>δ</i>-MnO<sub>2</sub>/MnC<sub>2</sub>O<sub>4</sub>·3H<sub>2</sub>O hybrids exhibit satisfactory properties as an anode materials for lithium-ion batteries.</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

Mesoporous δ-MnO2/MnC2O4·3H2O hybrids as electrode materials for lithium-ion battery and pseudocapacitor

  • 期刊论文

  • 发表日期：

    2025年11月26日

查看全文
  • Galina S. Zakharova,
  • A. A. Trofimov,
  • Z. A. Fattakhova,
  • E. G. Zyrianova

摘要

Mesoporous δ-MnO2/MnC2O4·3H2O hybrid materials have been prepared by fast room temperature redox deposition method using ascorbic acid as reducing agent. The products were characterized by powder X-ray diffraction, Fourier transform infrared and Raman spectroscopy, scanning electron microscope, low-temperature nitrogen adsorption and thermogravimetric analysis. The BET surface area of hybrid materials depends on their composition and ranges between 133 and 275 m2 g− 1. When used as an electrode for pseudocapacitors, δ-MnO2/MnC2O4·3H2O hybrid materials show very good electrochemical performance. The sample containing the minimum amount of δ-MnO2 showed the maximum initial specific capacitance of 240 F g− 1 at current density of 1 A g− 1. After 500 cycles the specific capacitance for sample exhibits 97% of the initial capacity indicating its high stability. The high specific capacitance and cycling performance of the hybrid materials are attributed to synergistic effect between δ-MnO2 and MnC2O4·3H2O. The electrochemical tests demonstrate that δ-MnO2/MnC2O4·3H2O hybrids exhibit satisfactory properties as an anode materials for lithium-ion batteries.