Synthesis, structural characterization, and electrochemical properties of MgNiP2O7 for energy storage applications

IF 1.7 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER The European Physical Journal B Pub Date : 2025-02-17 DOI:10.1140/epjb/s10051-025-00879-5

Youssef Ghandi, Siham El Mazouzi, Chaimaa Moukhfi, Hassan Mabrak, Ali Zourif, Rachid Fakhreddine, Malika Tridane, Said Belaaouad

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Abstract

This study investigates the structural, optical, and electrochemical properties of MgNiP₂O₇, a promising material for energy storage and catalysis applications. The compound was synthesized using a sol–gel method and characterized through X-ray diffraction, Fourier-transform infrared spectroscopy, and UV–visible spectroscopy. X-ray analysis confirmed a monoclinic crystal structure with space group P21/c. Optical studies revealed two distinct band gap energies at 1.6 eV and 2.66 eV, indicating potential for optoelectronic applications. Electrochemical characterization, including cyclic voltammetry, electrochemical impedance spectroscopy, and chronoamperometry, enhanced electrocatalytic activity, particularly for the oxygen reduction reaction. The material exhibited high current density and stable performance over time, suggesting its suitability for energy storage systems such as batteries and fuel cells. These findings highlight the multifunctional nature of MgNiP₂O₇ and its potential significance in developing sustainable energy technologies and environmental applications.

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储能用MgNiP2O7的合成、结构表征及电化学性能

本文研究了MgNiP2O7的结构、光学和电化学性质，这是一种很有前途的储能和催化材料。采用溶胶-凝胶法合成了该化合物，并通过x射线衍射、傅里叶变换红外光谱和紫外可见光谱对其进行了表征。x射线分析证实为单斜晶结构，空间群为P21/c。光学研究揭示了1.6 eV和2.66 eV两个不同的带隙能量，表明了光电应用的潜力。电化学表征，包括循环伏安法、电化学阻抗谱和计时安培法，增强了电催化活性，特别是对氧还原反应。随着时间的推移，该材料表现出高电流密度和稳定的性能，表明它适合于电池和燃料电池等能量存储系统。这些发现突出了MgNiP2O7的多功能性质及其在开发可持续能源技术和环境应用方面的潜在意义。图形抽象

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