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<p>Developing economical and effective materials for electrochemical water splitting with non-noble metal oxides offers a promising strategy to mitigate environmental challenges and promote clean energy. Nevertheless, a combination of carbon-based and transition-metal-based materials offers a captivating and novel route for producing eco-friendly fuel. The development of effective catalysts employing readily available components for kinetically demanding oxygen evolution reaction (OER) has gained the most attention in research. To improve OER kinetics, we fabricated the BaNiO<sub>3</sub>/rGO nanohybrid by a hydrothermal approach for oxygen evaluation in 1.0&#xa0;M KOH medium. The BaNiO<sub>3</sub>/rGO nanohybrid&#xa0;demonstrated a remarkable catalytic performance, with <i>C</i><sub>dl</sub> (double-layer capacitance) and ECSA (electrochemical surface area) values of 22&#xa0;mF and 550&#xa0;cm<sup>2</sup>, respectively. Because&#xa0;of its higher ECSA, the nanocomposite exhibited a minimal overpotential (<i>η</i>) value of 217&#xa0;mV and 37&#xa0;mV/dec Tafel plot for OER at 10&#xa0;mA/cm<sup>2</sup>. The cyclic stability and chronoamperometry analysis of the BaNiO<sub>3</sub>/rGO composite displayed high cycling durability of 50&#xa0;h even after the 2000th cycle. This research provided new insights into the advancement of cost-effective and superior catalysts for OER and several future energy conversion applications.</p>

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Boosting the Electrocatalytic Performance of BaNiO3 via Composite Formation with Reduced Graphene Oxide in Oxygen Evolution Reaction

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Taghrid S. Alomar,
  • Najla AlMasoud,
  • Muhammad Abdullah,
  • Tehreem Zahra,
  • Amal A. Al-wallan,
  • Hafiz Muhammad Tahir Farid,
  • Zeinhom M. El-Bahy

摘要

Developing economical and effective materials for electrochemical water splitting with non-noble metal oxides offers a promising strategy to mitigate environmental challenges and promote clean energy. Nevertheless, a combination of carbon-based and transition-metal-based materials offers a captivating and novel route for producing eco-friendly fuel. The development of effective catalysts employing readily available components for kinetically demanding oxygen evolution reaction (OER) has gained the most attention in research. To improve OER kinetics, we fabricated the BaNiO3/rGO nanohybrid by a hydrothermal approach for oxygen evaluation in 1.0 M KOH medium. The BaNiO3/rGO nanohybrid demonstrated a remarkable catalytic performance, with Cdl (double-layer capacitance) and ECSA (electrochemical surface area) values of 22 mF and 550 cm2, respectively. Because of its higher ECSA, the nanocomposite exhibited a minimal overpotential (η) value of 217 mV and 37 mV/dec Tafel plot for OER at 10 mA/cm2. The cyclic stability and chronoamperometry analysis of the BaNiO3/rGO composite displayed high cycling durability of 50 h even after the 2000th cycle. This research provided new insights into the advancement of cost-effective and superior catalysts for OER and several future energy conversion applications.