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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Inorganic Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Inorganic Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал неорганической химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-457X</issn><issn publication-format="electronic">3034-560X</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">697753</article-id><article-id pub-id-type="doi">10.7868/S3034560X25100053</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>СИНТЕЗ И СВОЙСТВА НЕОРГАНИЧЕСКИХ СОЕДИНЕНИЙ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">SYNTHESIS AND ELECTROCHEMICAL PROPERTIES OF NANOSTRUCTURED ZnCr<sub>2</sub>O<sub>4</sub> MATERIALS BASED ON CARBON FIBER FOR SUPERCAPACITORS</article-title><trans-title-group xml:lang="ru"><trans-title>СИНТЕЗ И ЭЛЕКТРОХИМИЧЕСКИЕ СВОЙСТВА НАНОСТРУКТУРИРОВАННЫХ МАТЕРИАЛОВ ZnCr<sub>2</sub>O<sub>4</sub> НА ОСНОВЕ УГЛЕРОДНОГО ВОЛОКНА ДЛЯ СУПЕРКОНДЕНСАТОРОВ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shichalin</surname><given-names>O. O</given-names></name><name xml:lang="ru"><surname>Шичалин</surname><given-names>О. О</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivanov</surname><given-names>N. P</given-names></name><name xml:lang="ru"><surname>Иванов</surname><given-names>Н. П</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Marmaza</surname><given-names>P. A</given-names></name><name xml:lang="ru"><surname>Мармаза</surname><given-names>П. А</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Seroshtan</surname><given-names>A. I</given-names></name><name xml:lang="ru"><surname>Сероштан</surname><given-names>А. И</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Priimak</surname><given-names>Z. E</given-names></name><name xml:lang="ru"><surname>Приймак</surname><given-names>З. Э</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Syrtanov</surname><given-names>M. S</given-names></name><name xml:lang="ru"><surname>Сыртанов</surname><given-names>М. С</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pirozhkov</surname><given-names>A. V</given-names></name><name xml:lang="ru"><surname>Пирожков</surname><given-names>А. В</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Simonenko</surname><given-names>T. L</given-names></name><name xml:lang="ru"><surname>Симоненко</surname><given-names>Т. Л</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Provatorova</surname><given-names>V. V</given-names></name><name xml:lang="ru"><surname>Проваторова</surname><given-names>В. В</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rinchinova</surname><given-names>V. B</given-names></name><name xml:lang="ru"><surname>Ринчинова</surname><given-names>В. Б</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Efremov</surname><given-names>V. V</given-names></name><name xml:lang="ru"><surname>Ефремов</surname><given-names>В. В</given-names></name></name-alternatives><bio xml:lang="en"><p>a separate division of the Federal State Budgetary Institution of Science of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”</p></bio><bio xml:lang="ru"><p>обособленное подразделение ФГБУН ФИЦ “Кольский научный центр РАН”</p></bio><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tananaev</surname><given-names>I. G</given-names></name><name xml:lang="ru"><surname>Тананаев</surname><given-names>И. Г</given-names></name></name-alternatives><bio xml:lang="en"><p>a separate division of the Federal State Budgetary Institution of Science of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”</p></bio><bio xml:lang="ru"><p>обособленное подразделение ФГБУН ФИЦ “Кольский научный центр РАН”</p></bio><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff5"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Papynov</surname><given-names>E. K</given-names></name><name xml:lang="ru"><surname>Папынов</surname><given-names>Е. К</given-names></name></name-alternatives><email>oleg_shich@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Sakhalin State University</institution></aff><aff><institution xml:lang="ru">Сахалинский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Far Eastern Federal University</institution></aff><aff><institution xml:lang="ru">Дальневосточный федеральный университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">National Research Tomsk Polytechnic University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Томский политехнический университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт общей и неорганической химии им. Н.С. Курнакова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Institute of Industrial Ecology Problems of the North</institution></aff><aff><institution xml:lang="ru">Институт промышленных проблем экологии Севера</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2025</year></pub-date><volume>70</volume><issue>10</issue><issue-title xml:lang="en">VOL 70, NO10 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 70, №10 (2025)</issue-title><fpage>1269</fpage><lpage>1283</lpage><history><date date-type="received" iso-8601-date="2025-12-04"><day>04</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0044-457X/article/view/697753">https://journals.eco-vector.com/0044-457X/article/view/697753</self-uri><abstract xml:lang="en"><p>Promising energy storage materials based on ZnCr<sub>2</sub>O<sub>4</sub> spinel, synthesized on carbon fiber matrices, remain insufficiently studied in the context of their application in electrochemical supercapacitors. In the present study, the synthesis of these materials was carried out using direct precipitation methods, sol-gel synthesis, and hydrothermal treatment followed by thermal processing. The main focus was on a comprehensive investigation of the morphology, phase composition, and electrochemical characteristics of the samples. Analysis was conducted using X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. Samples obtained by the sol-gel method with high-temperature treatment in an argon atmosphere demonstrated high phase purity of the spinel, a well-developed porous structure, and maximum specific capacitance. Impedance studies revealed low resistance values, indicating efficient charge transfer. The research results confirm the high potential of ZnCr<sub>2</sub>O<sub>4</sub>/carbon materials for the development of efficient and durable next-generation supercapacitors.</p></abstract><trans-abstract xml:lang="ru"><p>Перспективные накопительные материалы на основе шпинели ZnCr<sub>2</sub>O<sub>4</sub>, синтезированные на матрицах углеродного волокна, остаются недостаточно изученными в контексте их применения в электрохимических суперконденсаторах. В настоящей работе указанные материалы получены методами прямого осаждения, золь-гель синтеза и гидротермальной обработки с последующей термической обработкой. Основной акцент сделан на комплексном изучении морфологии, фазового состава и электрохимических характеристик образцов. Исследования проводили с помощью рентгенофазового анализа, сканирующей электронной микроскопии, энергодисперсионного спектрального анализа, циклической вольтамперометрии и электрохимической импедансной спектроскопии. Образцы, полученные золь-гель методом при высокотемпературной обработке в атмосфере аргона, имеют высокую фазовую чистоту шпинели, развитую пористую структуру и максимальную удельную емкость. Импедансные исследования выявили низкие значения сопротивления, что свидетельствует об эффективном переносе заряда. Результаты исследований подтверждают высокую перспективность ZnCr<sub>2</sub>O<sub>4</sub>/углеродных материалов для создания эффективных и долговечных суперконденсаторов нового поколения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ZnCr<sub>2</sub>O<sub>4</sub></kwd><kwd>nanostructured materials</kwd><kwd>carbon fiber</kwd><kwd>supercapacitors</kwd><kwd>electrode materials</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>наноструктурированные материалы</kwd><kwd>углеродное волокно</kwd><kwd>суперконденсаторы</kwd><kwd>электродные материалы</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках реализации государственного задания Минобрнауки России в сфере научной деятельности по проектам № FEFF-2024-0001 "Синтез перспективных функциональных материалов и моделирование электрохимических устройств для водородной энергетики". 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