Süperkapasitör Uygulamaları için Nikel/Nikel Köpük Elektrodun İyonik Sıvı İçerisinden Elektrokimyasal Olarak Sentezi

Year 2019, Volume: 19 Issue: 3, 586 - 594, 31.12.2019

Naime Özdemir , Perihan Yılmaz Erdoğan , Huseyin Zengin , Abdulcabbar Yavuz

https://doi.org/10.35414/akufemubid.587112

Cited By: 1

Abstract

Nikel temelli elektrot,
enerji depolama malzemeleri için kolin klorür ve üre bazlı iyonik sıvı
içerisinden nikel köpük akım toplayıcı üzerine elektrokimyasal olarak
depolandı. Kaplamaların KOH elektrolitinde nikel köpük üzerindeki
elektrokimyasal davranışı, dönüşümlü voltametri tekniği ile incelendi. İyonik
bir sıvıdan elektrodepolanan elektrotlar, pozitif potansiyelde (0 ile 0.6 V
arasında) redoks reaksiyonuna sahip oldukları için katot elektrotu olarak
kullanılabilir. SEM ile kaplanmamış ve kaplanmış nikel köpüğün yüzey
morfolojisi incelendi. Nikel köpüğün kendisi 2B dökme nikelden daha büyük bir
yüzey alanına sahiptir. Nikelin iyonik sıvıdan elektrodepolanmasında yüksek
yüzey alanına sahip mikropartiküller elde edilmiştir. Bu yüzden nikel kaplı
nikel köpük elektrot ile bazik elektrolit arasındaki iyon ve elektron transfer
hızı artırıldı. Nikel temelli nikel köpük elektrotunun KOH elektroliti
içerisindeki reaksiyon mekanizması, difüzyon kontrollü olarak gerçekleşti.
Bağlayıcı içermeyen nikel köpük üzerindeki nikel bazlı elektrot, 5 mV s^-1
tarama hızında 1055 F g^-1'lik spesifik kapasitansa sahiptir. İyonik
sıvı içerisinden nikel köpük yüzey üzerine elde edilen nikel temelli
kaplamalar, enerji depolama cihazlarında katot elektrot olarak kullanılabilir.

Keywords

Elektrodepolama; Dönüşümlü voltametri; İyonik sıvı; Nikel köpük

Thanks

YÖK 100/2000 DOKTORA PROGRAMI

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