vestichИзвестия Национальной академии наук Беларуси. Серия химических наукProceedings of the National Academy of Sciences of Belarus, Chemical Series1561-83312524-2342The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8331-2022-58-1-36-44vestich-702Research ArticleФИЗИЧЕСКАЯ ХИМИЯPHYSICAL CHEMISTRYКаталитическая активность порошковых сплавов никель–медь в процессах электрохимического выделения водорода в растворе щелочи и щелочном растворе этанолаCatalytic activity of nickel–copper powder alloys in the processes of electrochemical hydrogen evolution in alkaline solution and ethanol alkaline solutionhttps://orcid.org/0000-0002-4877-0974ВрублевскаяО. И.VrublevskayaO. N.

Врублевская Ольга Николаевна – кандидат химических наук, доцент, заместитель директора

ул. Ленинградская, 14, 220006, Минск

Vrublevskaya Olga N. – Ph. D. (Chemistry), Associate Professor, Vice Director for Scientific and Innovative Work

14, Leningradskaya Str., 220006, Minsk

vrublevskaya.olga@gmail.comЩербаковаА. Б.ShcherbakovaA. B.

Щербакова Александра Борисовна – студент

ул. Ленинградская, 14, 220050, Минск

Shcherbakova Alexandra B. – student

14, Leningradskaya Str., 220050, Minsk

shcherbakovaalexandra2001@gmail.comhttps://orcid.org/0000-0001-8937-4161КудакоА. А.KudakaA. A.

Кудако Антон Александрович – младший научный сотрудник

ул. Ленинградская, 14, 220006, Минск

Kudaka Anton A. – Junior Researcher

14, Leningradskaya Str., 220006, Minsk

kudako.anton@gmail.comhttps://orcid.org/0000-0001-6852-5186ГалузаМ. Г.GaluzaM. G.

Галуза Мария Геннадиевна – младший научный сотрудник

ул. Ленинградская, 14, 220006, Минск

Galuza Maria G. – Junior Researcher

14, Leningradskaya Str., 220006, Minsk

haluzamg@gmail.comСевжидсуренГ.SevjidsurenG.

Галсан Севжидсурен – кандидат химических наук, заведующий отделением

пр-т Мира, 54Б, 13330, Улан-Батор

Galsan Sevjidsuren – Ph. D. (Physics). Chair of Materials Science Department

54B, Peace Ave., 13330, Ulaanbaatar

sevjidsureng@mas.ac.mnБолормааБ.BolormaaB.

Бурэнтогтох Болормаа – научный cотрудник

пр-т Мира, 54Б, 13330, Улан-Батор

Burentogtokh Bolormaa – Researcher of Materials Science Department

54B, Peace Ave., 13330, Ulaanbaatar

Bolormss_b@mas.ac.mnНаучно-исследовательский институт физико-химических проблем Белорусского государственного университетаResearch Institute for Physical Chemical Problems of the Belarusian State UniversityБелорусский государственный университетBelarusian State UniversityИнститут физики и технологии Монгольской академии наукInstitute of Physics and Technology of the Mongolian Academy of Sciences2022100320225813644Copyright © Врублевская О.И., Щербакова А.Б., Кудако А.А., Галуза М.Г., Севжидсурен Г., Болормаа Б., 20222022Врублевская О.И., Щербакова А.Б., Кудако А.А., Галуза М.Г., Севжидсурен Г., Болормаа Б.Vrublevskaya O.N., Shcherbakova A.B., Kudaka A.A., Galuza M.G., Sevjidsuren G., Bolormaa B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestichem.belnauka.by/jour/article/view/702

Методом совместного химического восстановления Ni(II) и Cu(II) гидратом гидразина синтезированы сплавы Ni93Cu и Ni82Cu (ат.%), состоящие из кристаллических фаз никеля, твердого раствора меди в никеле. Определение емкостным методом электрохимически активной площади поверхности рабочих графитовых электродов с «каталитическими чернилами», содержащими порошки Ni93Cu и Ni82Cu, показало, что она на 4 и 20 % больше, чем для порошка никеля. Установлено, что порошковые сплавы Ni93Cu и Ni82Cu применимы в качестве катализаторов электрохимического процесса выделения водорода в растворах щелочей и щелочном растворе этанола. Определено, что каталитическая активность порошкового сплава Ni82Cu в процессе выделения водорода в щелочном растворе этанола выше, чем для порошков никеля и Ni93Cu. Каталитическая способность порошкового сплава Ni82Cu при циклировании в течение 25 циклов практически не меняется в отличие от Ni и Ni93Cu.

 

Ni93Cu and Ni82Cu (at%) alloys were synthesized by the method of combined chemical reduction of Ni(II) and Cu(II) with hydrazine hydrate. These alloys consist of crystalline phases of nickel, solid solution of copper in nickel. Determination by the “capacitive method” of the electrochemically active surface area of working graphite electrodes with “catalytic inks” containing Ni93Cu and Ni82Cu powders showed that it is 4 and 20 % larger than for nickel powder, respectively. It was found that powder alloys Ni93Cu and Ni82Cu are applicable as catalysts for the electrochemical process of hydrogen evolution in alkaline solutions and alkaline ethanol solution. It was determined that the catalytic activity of Ni82Cu powder alloy in the process of hydrogen evolution in the alkaline ethanol solution is higher than for nickel and Ni93Cu powders. The catalytic ability of the Ni82Cu powder alloy during cycling for 25 cycles practically does not change, in contrast to Ni and Ni93Cu.

 

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The authors declare that there are no conflicts of interest present.