Manganese-nickel oxide films were electrodeposited on a stainless steel plate substrate in a bath containing manganese sulfate, nickel chloride and a non-ionic surfactant. The structural, morphological and electrochemical properties of these films were investigated. The X-ray diffraction pattern revealed the grain size of the material and confirmed the presence of manganese oxide and nickel oxide in the films. The preparative parameters, such as potential window, scan rate, bath concentration and numbers of potential cycles, were optimized during potentiodynamic deposition. The cyclic voltammetry was used to study the reduction and oxidation mechanism during the electrodeposition process. The charge-discharge method was applied to study the capacitor property of the synthesized material.
ÅËÅÊÒÐÎÎÑÀÄAEÅÍÍß ØÀв ÌÀÍÃÀÍ-ͲÊÅËÅÂÎÃÎ ÎÊÑÈÄÓ ÄËß ÂÈÊÎÐÈÑÒÀÍÍß Ó ÑÓÏÅÐÊÎÍÄÅÍÑÀÒÎÐÀÕ
Ï. Äàí³ºëü ͳêñîí, Ê. Äaeîçåô Êåííåä³Øàðè ìàíãàí-í³êåëåâîãî îêñèäó áóëè åëåêòðîîñàäaeåí³ íà ï³äêëàäêó ç íåðaeàâ³þ÷î¿ ñòàë³ ç åëåêòðîë³òó, ùî ì³ñòèâ ìàíãàí ñóëüôàò, í³êåëü õëîðèä ³ íå³îíîãåííó ïîâåðõíåâî-àêòèâíó ðå÷îâèíó. Äîñë³äaeåí³ ñòðóêòóðí³, ìîðôîëîã³÷í³ òà åëåê-òðîõ³ì³÷í³ âëàñòèâîñò³ öèõ øàð³â. Îòðèìàí³ ðåíòãåí³âñüê³ ä³ôðàêòîãðàìè äîçâîëèëè âèçíà÷èòè ðîçì³ð êðèñòàë³ò³â â ìà-òåð³àë³ ³ ï³äòâåðäèòè íàÿâí³ñòü îêñèä³â ìàíãàíó òà í³êåëþ. Òàê³ ïàðàìåòðè ñèíòåçó, ÿê â³êíî ïîòåíö³àë³â, øâèäê³ñòü ñêàíóâàííÿ ïîòåíö³àëó, êîíöåíòðàö³ÿ åëåêòðîë³òó òà ê³ëüê³ñòü öèêë³â, áóëè îïòèì³çîâàí³ ìåòîäîì ïîòåíö³îäèíàì³÷íîãî îñàäaeåííÿ. Öèêë³÷íà âîëüòàìïåðîìåòð³ÿ áóëà âèêîðèñòàíà äëÿ âèâ÷åííÿ ìåõàí³çìó â³äíîâëåííÿ ³ îêèñëåííÿ ïðè åëåêòðîîñà-äaeåíí³ îêñèäíèõ øàð³â. Ìåòîä îòðèìàííÿ ðîçðÿäíî-çàðÿäíèõ êðèâèõ áóâ âèêîðèñòàíèé äëÿ äîñë³äaeåííÿ ºìí³ñíèõ âëàñòèâîñòåé ñèíòåçîâàíîãî ìàòåð³àëó.Êëþ÷îâ³ ñëîâà: ñóïåðêîíäåíñàòîð, îêñèäíèé åëåêòðîä, åëåêòðîîñàäaeåííÿ, õàðàêòåðèñòèêè ïîâåðõí³, öèêë³÷íà âîëüòàìïåðîìåòð³ÿ, ðîçðÿäíî-çàðÿäí³ êðèâ³. Manganese-nickel oxide films were electrodeposited on a stainless steel plate substrate in a bath containing manganese sulfate, nickel chloride and a non-ionic surfactant. The structural, morphological and electrochemical properties of these films were investigated. The X-ray diffraction pattern revealed the grain size of the material and confirmed the presence of manganese oxide and nickel oxide in the films. The preparative parameters, such as potential window, scan rate, bath concentration and numbers of potential cycles, were optimized during potentiodynamic deposition. The cyclic voltammetry was used to study the reduction and oxidation mechanism during the electrodeposition process. The charge-discharge method was applied to study the capacitor property of the synthesized material.