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Чернявина В. В., Дышловая Я. А., Бережная А. Г. Влияние состава электролита катодного осаждения на морфологию и емкостные свойства пленки MnO2 // Электрохимическая энергетика. 2025. Т. 25, вып. 2. С. 74-86. DOI: 10.18500/1608-4039-2025-25-2-74-86, EDN: TGGVBC
Влияние состава электролита катодного осаждения на морфологию и емкостные свойства пленки MnO2
Оксид марганца получали методом катодного электрохимического осаждения из растворов электролитов с добавками нитрата или сульфата натрия. Структурные характеристики и элементный состав образцов МnO2 изучали методами энергодисперсионного микроанализа, ИК-спектроскопии и просвечивающей электронной микроскопии. Электрохимические характеристики электродов определяли методами циклической вольтамперометрии, гальваностатического заряда-разряда и импедансной спектроскопии в 0.5 М растворе Na2SO4. Установили зависимость структурных и емкостных свойств электродов MnO2 от природы аниона в составе электролита для электрохимического осаждения. Высокие емкостные характеристики получили для образца MnO2, осажденного из электролита с добавкой сульфата натрия. При скорости развертки 5 мВ/с его удельная емкость составила 215 Ф/г.
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