Электрохимические характеристики наночастиц оксида меди, синтезированных методом растворного горения с контролируемой морфологией

Наночастицы оксида меди (CuO) были получены в условиях растворного горения с использованием глицина в качестве органического топлива и хелатирующего агента при различных окислительно-восстановительных отношениях (f = 0.2, 1.0 и 1.6). Полученные порошки были термически обработаны при 300 ℃ в течение 30 мин и охарактеризованы с помощью термогравиметрического дифференциального термического анализа (ДТА/ТГ), сканирующей электронной микроскопии (СЭМ), энергодисперсионной спектроскопии (ЭДС), порошковой рентгеновской дифракции (РФА) и атомно-абсорбционной спектрометрии (ААС). Электрохимические характеристики были определены с помощью циклической вольтамперометрии (ЦВА). Средние размеры кристаллитов и удельная поверхность полученных образцов варьировались в диапазоне от 4.8 до 18.6 нм и от 14.4 до 78.4 м²/г. Наибольшая удельная поверхность соответствует образцу, синтезированному при f = 0.2, который также имеет наименьший размер частиц (4.8 нм). Электрохимическое поведение нанопорошков оксида меди существенно зависит от структурных и морфологических особенностей. Отличная удельная емкость микроструктуры образца CuO, синтезированного при значительном дефиците топлива (f = 0.2), объясняется его большой площадью поверхности и большим радиусом пор.

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