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Електровідновлення кисню на наноструктурованих срібно-мідних катодах

Vasyl Skrypnychuk1, Galyna Zozula1, Vasyl Kordan2, Orest Kuntyi1
Affiliation: 
1 Lviv Polytechnic National University, 12 S. Bandery St., Lviv 79013, Ukraine 2 Ivan Franko National University of Lviv, 6 Kyryla i Mefodiya St., Lviv 79005, Ukraine skrypnychuk@gmail.com
DOI: 
https://doi.org/
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Abstract: 
Запропоновано одержання каталітично активних катодів AgNPs/Cu відновлення О2 методом гальванічного заміщення срібла на мідь у розчинах K[Ag(CN)2]. Показано, що утворені AgNPs з розміром 50 нм рівномірно розподілені на мідній поверхні, а їхній вміст залежить від концентрації ціанокомплексу та тривалості процесу GR. Встановлено, що в широкому діапазоні концентрацій срібла (0.02…0.86 ат.%) на мідній поверхні катоди AgNPs/Cu проявляють вищу активність ORR, ніж срібні на 15 % та проявляють кращі показники Eonset (на 0.02 V) і E1/2 (на 0.05 V). Результати тестування в лужних цинково-повітряних паливних елементах показали, що напруга розряду на основі AgNPs/Cu катодів конкурує з елементами на основі срібних катодів.
References: 

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