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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">kaz44</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Университета Шакарима. Серия технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Shakarim University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2788-7995</issn><issn pub-type="epub">3006-0524</issn><publisher><publisher-name>«Шәкәрім университеті» КеАҚ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.53360/2788-7995-2023-4(12)-24</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-567</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)</subject></subj-group></article-categories><title-group><article-title>Исследование процесса формирования химического источника тока в «red-ox» системе Fe(II) – Fe(III) в сернокислой среде</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of the process of formation of a chemical current source in the «red-ox» Fe(II) – Fe(III) system in a sulfuric acid environment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-0801-5261</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ораз</surname><given-names>У. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Oraz</surname><given-names>U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Улжан Альхановна Ораз – докторант</p><p>050040,  г. Алматы, пр. аль-Фараби, 71 </p></bio><bio xml:lang="en"><p>Ulzhan Oraz – Master, PhD-student</p><p>050040 , Almaty, 71 Al-Farabi Avenue</p></bio><email xlink:type="simple">alhanovna.u@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9076-8130</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баешова</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Bayeshova</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ажар Коспановна Баешова – доктор технических наук, профессор</p><p>050040,  г. Алматы, пр. аль-Фараби, 71 </p></bio><bio xml:lang="en"><p>Azhar Bayeshova – Doctor of Technical Sciences, Professor</p><p>050040 , Almaty, 71 Al-Farabi Avenue</p></bio><email xlink:type="simple">azhar_b@bk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0745-039X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баешов</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bayeshov</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абдуали Баешов – доктор химических наук, профессор, академик НАН Республики Казахстан</p><p>050000, г. Алматы, ул. Кунаева, 132</p></bio><bio xml:lang="en"><p>Abduali Bayeshov – Doctor of Chemical Science, Professor, Academician of the National Academy of Sciences of the Republic Kazakhstan</p><p>050000 , Almaty, 132 Konaev st.</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казахский национальный университет им. aль-Фараби</aff><aff xml:lang="en">Al-Farabi Kazakh National University</aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">АО «Институт топлива, катализа и электрохимии имени Д.В. Сокольского»</aff><aff xml:lang="en">«D.V.Sokolsky Institute of fuel, catalysis and electrochemistry» JSC</aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>28</day><month>12</month><year>2023</year></pub-date><volume>1</volume><issue>4(12)</issue><fpage>195</fpage><lpage>203</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ораз У.А., Баешова А.К., Баешов А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ораз У.А., Баешова А.К., Баешов А.</copyright-holder><copyright-holder xml:lang="en">Oraz U., Bayeshova A., Bayeshov A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://tech.vestnik.shakarim.kz/jour/article/view/567">https://tech.vestnik.shakarim.kz/jour/article/view/567</self-uri><abstract><p>Среди технологии, предназначенных для сохранения энергии, особого внимания заслуживают проточные аккумуляторы. Принцип действия их основан на применении систем из переменновалентных ионов. Целью работы является создание химического источника тока на основе применения «red – ox» системы Fe(II)/Fe(III) и определение закономерностей формирования величин электродвижущей силы (ЭДС) и тока короткого замыкания (ТКЗ) в кислых растворах в зависимости от концентрации ионов. Эксперименты проводятся методом измерения ЭДС, формирующейся между графитовыми электродами и ТКЗ. Собрана специальная установка, состоящая из электролизера с разделенными электродными пространствами, амперметра, вольтметра и графитовых электродов. Электролитом служили подкисленные растворы сульфатов железа (II) и железа (III). В электролизере, электродные пространства которого разделены анионитовой мембраной, при заполнении одного пространства сульфатом железа (II), а другого – сульфатом железа (III) между графитовыми электродами возникает ЭДС. При создании контакта между графитовыми электродами в первом электродном пространстве протекает окисление железа (II), а во втором – восстановление железа (III). Формируется химический источник тока. При концентрации железа (III), равной 20 г/л, изменение концентрации железа (II) в пределах 1-40 г/л способствует смещению потенциала графитового электрода в область отрицательных значений. При концентрации Fe(III), равной 1 г/л, значение потенциала составляет 509 мВ, а при 40 г/л – 475 мВ. Установлено, что в результате указанных изменений наблюдается возрастание ЭДС и КТЗ. </p></abstract><trans-abstract xml:lang="en"><p>Among the technologies designed to save energy, flow-through batteries deserve special attention. Their principle of operation is based on the use of systems of variably valent ions. The aim of the work is to create a chemical current source based on the use of the "red – ox" Fe(II)/Fe(III) system and to determine the patterns of formation of electromotive force (EMF) and short-circuit current (SCC) in acidic solutions depending on the concentration of ions. The experiments are carried out by measuring the EMF formed between graphite electrodes and SCC. A special installation has been assembled, consisting of an electrolyzer with separated electrode spaces, an ammeter, a voltmeter and graphite electrodes. Acidified solutions of iron (II) and iron (III) sulfates served as the electrolyte. In an electrolyzer, the electrode spaces of which are separated by an anionite membrane, when one space is filled with iron (II) sulfate and the other with iron (III) sulfate, an EMF occurs between graphite electrodes. When making contact between graphite electrodes, iron (II) oxidation occurs in the first electrode space, and iron (III) reduction occurs in the second. A chemical current source is being formed. At a concentration of iron (III) equal to 20 g/l, a change in the concentration of iron (II) in the range of 1-40 g / l contributes to a shift in the potential of the graphite electrode to negative values. At a concentration of Fe(III) equal to 1 g/l, the potential value is 509 mV, and at 40 g / l – 475 mV. At a constant concentration of iron (II), the addition of Fe(III) leads to a shift in the EMF value to the right. It was found that as a result of these changes, an increase in EMF and SCC is observed. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>ионы железа (II) – железа (III)</kwd><kwd>электродвижущая сила</kwd><kwd>ток короткого замыкания</kwd><kwd>электролит</kwd><kwd>графит</kwd><kwd>электрод</kwd></kwd-group><kwd-group xml:lang="en"><kwd>iron (II) – iron (III) ions</kwd><kwd>electromotive force</kwd><kwd>short-circuit current</kwd><kwd>electrolyte</kwd><kwd>graphite</kwd><kwd>electrode</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Абрамова Д.А., Дубцов Н.Д., Петрова С.Е. Автономные источники энергии // Химические источники тока. Лучшая исследовательская статья 2023 / Сборник статей, 2023, 7. https://naukaip.ru/wp-content/uploads/2023/01/K-448.pdf#page=7.</mixed-citation><mixed-citation xml:lang="en">Abramova D.A., Dubcov N.D., Petrova S.E. 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