Improvement in perovskite Performance by Using Doping Method Under Alkaline Medium

IF 3.2 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-11-06 DOI:10.1007/s12678-025-00983-1

Soumaya Gouadria, F. F. Alharbi, Muhammad Abdullah, Hafiz Muhammad Tahir Farid, Salma Aman

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Abstract

The quick decline of fossil fuels caused by high consumption levels has boosted the creation of sustainable energy conversion systems, resulting in a growing energy crisis. The ongoing energy requirement drives the exploration of innovative options for water splitting. It is critical to develop an exceptionally efficient electrocatalyst that can enhance the sluggish oxygen evolution reaction (OER). BiFeO₃ and Sm-doped BiFeO₃ were manufactured via sol–gel technique and investigated as a catalyst for OER in a 1.00 M KOH. The morphology and crystalline phases were resolved by utilizing a different analytical technique. The Sm-doped BiFeO₃ displayed efficient OER performance having overpotential (η = 186 mV) at 10 mA /cm² and Tafel value (32 mV/dec) and solution resistance (R_s) of 0.83 Ω. In addition, the electrocatalytic efficiency of Sm-doped BiFeO₃ catalyst for OER exhibits exceptional sustainability for 40 h and an increased electrochemically active surface area (ECSA) of 897.5 cm². The better performance of the Sm-doped BiFeO₃ catalyst may be linked to several factors, including its distinctive interrelated morphology, strong synergistic interactions between Sm, Bi and Fe and effective OH⁻ ions adsorption. The results indicate that Sm-doped BiFeO₃ has potential as an electrocatalyst in practical applications.

Graphical Abstract

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在碱性介质下用掺杂法改善钙钛矿性能

高消费水平导致化石燃料的迅速减少，推动了可持续能源转换系统的建立，导致能源危机日益严重。持续的能源需求推动了对水分解创新方案的探索。开发一种特别高效的电催化剂来提高缓慢的析氧反应（OER）是至关重要的。采用溶胶-凝胶法制备了BiFeO3和sm掺杂BiFeO3，并对其在1.00 M KOH条件下作为OER催化剂进行了研究。利用不同的分析技术对其形貌和晶相进行了分析。sm掺杂的BiFeO3在10 mA /cm2下具有过电位（η = 186 mV）、Tafel值（32 mV/dec）和溶液电阻（Rs）为0.83 Ω的良好OER性能。此外，sm掺杂BiFeO3催化剂对OER的电催化效率在40小时内表现出优异的可持续性，电化学活性表面积（ECSA）增加了897.5 cm2。Sm掺杂BiFeO3催化剂的优异性能可能与多种因素有关，包括其独特的相互关联形态，Sm、Bi和Fe之间的强协同作用以及有效的OH -离子吸附。结果表明，sm掺杂BiFeO3具有作为电催化剂的实际应用潜力。图形抽象

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.