Electrocatalytic Properties of Electroless Ni–P Coatings Towards Hydrogen Evolution Reaction in Alkaline Solution: Ni–P Coatings Deposited on Steel Substrate at Different Concentrations of Sodium Hypophosphite

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2022-11-18 DOI:10.1007/s12678-022-00791-x

Veselina Chakarova, Milko Monev

{"title":"Electrocatalytic Properties of Electroless Ni–P Coatings Towards Hydrogen Evolution Reaction in Alkaline Solution: Ni–P Coatings Deposited on Steel Substrate at Different Concentrations of Sodium Hypophosphite","authors":"Veselina Chakarova, Milko Monev","doi":"10.1007/s12678-022-00791-x","DOIUrl":null,"url":null,"abstract":"<div><p>The hydrogen evolution reaction on electroless Ni–P alloy coatings on steel substrate with decreasing content of P from 8.2 to 3.4 wt% is investigated in 1 M KOH. The lowering of the P content in the alloy coating is achieved by decreasing the concentration of sodium hypophosphite in the solution for electroless deposition. Electrochemical investigations in combination with electron microscopy and radiographic analyses (SEM, EDS, XRD, TEM) reveal that the electrocatalytic activity of Ni–P coatings in regard to the hydrogen evolution reaction depends on the complex action of structure (morphology, phase composition), P content, and thickness. A change in any of these characteristics may lead to a change in other properties such as ability of the electrodes to adsorb and absorb hydrogen. Correct assessment of the contribution of individual factors is not possible due to the fact that the conditions for obtaining the coatings cannot be set in such a way as to lead to a change in only one of the factors.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-022-00791-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

The hydrogen evolution reaction on electroless Ni–P alloy coatings on steel substrate with decreasing content of P from 8.2 to 3.4 wt% is investigated in 1 M KOH. The lowering of the P content in the alloy coating is achieved by decreasing the concentration of sodium hypophosphite in the solution for electroless deposition. Electrochemical investigations in combination with electron microscopy and radiographic analyses (SEM, EDS, XRD, TEM) reveal that the electrocatalytic activity of Ni–P coatings in regard to the hydrogen evolution reaction depends on the complex action of structure (morphology, phase composition), P content, and thickness. A change in any of these characteristics may lead to a change in other properties such as ability of the electrodes to adsorb and absorb hydrogen. Correct assessment of the contribution of individual factors is not possible due to the fact that the conditions for obtaining the coatings cannot be set in such a way as to lead to a change in only one of the factors.

Abstract Image

查看原文本刊更多论文

碱性溶液中化学镍-P 涂层对氢气进化反应的电催化特性：不同次磷酸钠浓度下沉积在钢基底上的 Ni-P 涂层

在 1 M KOH 溶液中，研究了钢基体上的无电解 Ni-P 合金涂层在 P 含量从 8.2% 降至 3.4% 时的氢演化反应。合金镀层中 P 含量的降低是通过降低化学沉积溶液中次磷酸钠的浓度实现的。结合电子显微镜和射线分析（SEM、EDS、XRD、TEM）进行的电化学研究表明，Ni-P 涂层在氢进化反应中的电催化活性取决于结构（形态、相组成）、P 含量和厚度的复杂作用。其中任何一个特性的改变都可能导致其他特性的改变，如电极吸附和吸收氢气的能力。由于获得涂层的条件不可能只导致其中一个因素发生变化，因此无法正确评估各个因素的作用。

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.