Facile Synthesis of Nickel Oxide/Delaminated Boron Composite with an Enhanced Electrocatalytic Activity Towards the Oxygen Evolution Reaction in Alkaline Medium

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-08-28 DOI:10.1007/s12678-025-00979-x

Mustapha Balarabe Idris, Bhekie B. Mamba, Fuku Xolile

{"title":"Facile Synthesis of Nickel Oxide/Delaminated Boron Composite with an Enhanced Electrocatalytic Activity Towards the Oxygen Evolution Reaction in Alkaline Medium","authors":"Mustapha Balarabe Idris, Bhekie B. Mamba, Fuku Xolile","doi":"10.1007/s12678-025-00979-x","DOIUrl":null,"url":null,"abstract":"<div><p>Over the years, there has been a surge in the quest for the replacement of noble metal-based electrocatalysts for the efficient oxygen evolution reaction (OER) in an alkaline medium. Herein, a facile synthesis of NiO/delaminated boron composite and its electrocatalytic activity is reported. The influence of the loading level of delaminated boron on the electrocatalytic OER activity of NiO in 1 M KOH medium is investigated systematically. The linear voltammetry study reveals that all NiO/delaminated boron (NiO-B-<sub>X</sub>) composites demonstrate a higher current density response as well as lower overpotential compared to NiO. The presence of the borophene in the composite could have resulted in the introduction of positive charge carriers on NiO, thereby improving the kinetics of the OER. Besides, the dispersion of the NiO particles onto the surface of delaminated boron is expected to mitigate the aggregation of NiO particles and expose a larger number of electrochemically active sites, consequently enhancing the overall OER performance. Evidently, NiO-B-<sub>X</sub> electrocatalysts prepared with 10 mg of the borophene, (NiO-B-<sub>10</sub>), demonstrate both the lowest overpotential at 10 mA cm<sup>−2</sup> of 1.61 V and Tafel slope of 61.25 mV dec<sup>−1</sup>. It also exhibits extended stability over 8 h.\n</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"16 6","pages":"1049 - 1058"},"PeriodicalIF":2.8000,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-025-00979-x.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-025-00979-x","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Over the years, there has been a surge in the quest for the replacement of noble metal-based electrocatalysts for the efficient oxygen evolution reaction (OER) in an alkaline medium. Herein, a facile synthesis of NiO/delaminated boron composite and its electrocatalytic activity is reported. The influence of the loading level of delaminated boron on the electrocatalytic OER activity of NiO in 1 M KOH medium is investigated systematically. The linear voltammetry study reveals that all NiO/delaminated boron (NiO-B-_X) composites demonstrate a higher current density response as well as lower overpotential compared to NiO. The presence of the borophene in the composite could have resulted in the introduction of positive charge carriers on NiO, thereby improving the kinetics of the OER. Besides, the dispersion of the NiO particles onto the surface of delaminated boron is expected to mitigate the aggregation of NiO particles and expose a larger number of electrochemically active sites, consequently enhancing the overall OER performance. Evidently, NiO-B-_X electrocatalysts prepared with 10 mg of the borophene, (NiO-B-₁₀), demonstrate both the lowest overpotential at 10 mA cm⁻² of 1.61 V and Tafel slope of 61.25 mV dec⁻¹. It also exhibits extended stability over 8 h.

Graphical Abstract

查看原文本刊更多论文

碱性介质中电催化析氧活性增强的氧化镍/脱层硼复合材料的简易合成

多年来，人们一直在寻求替代贵金属基电催化剂，以在碱性介质中进行高效析氧反应（OER）。本文报道了一种简便的NiO/分层硼复合材料的合成及其电催化活性。系统地研究了分层硼在1 M KOH介质中负载水平对NiO电催化OER活性的影响。线性伏安法研究表明，与NiO相比，NiO/分层硼（NiO- b - x）复合材料具有更高的电流密度响应和更低的过电位。硼苯在复合材料中的存在可能导致NiO上引入正电荷载流子，从而改善OER动力学。此外，NiO颗粒在脱层硼表面的分散有望减轻NiO颗粒的聚集，暴露出更多的电化学活性位点，从而提高整体OER性能。结果表明，添加10 mg硼苯（NiO-B-10）制备的NiO-B-X电催化剂在10 mA cm−2时的过电位最低为1.61 V， Tafel斜率为61.25 mV dec−1。它还展示了超过8小时的扩展稳定性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.