Tailored 3D Foams Decorated with Nanostructured Manganese Oxide for Asymmetric Electrochemical Capacitors
Journal of the Electrochemical Society, ISSN: 1945-7111, Vol: 169, Issue: 2
2022
- 3Citations
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Article Description
Tailored 3D (Ni and NiCo) metallic foam architectures were produced by electrodeposition and decorated via electrochemical routes with manganese oxide (MnOx) to serve as positive electrodes for supercapacitors. For comparative purposes, an electrode made of commercial Ni foam was also prepared. The foam-based electrodes were paired with a carbon cloth electrode and used to assemble asymmetric electrochemical cells. The electrochemical response of these cells was studied by applying different electrochemical techniques. In addition, two different protocols (cycling and floating) were applied to assess cells durability and fade. Despite the significant differences in the decorated foams morphology and structure their electrochemical responses revealed similar trends. The electrodes made of tailored foams showed higher specific capacitance, better capacitance retention at high current load and enhanced cycling stability compared to the electrodes made of commercial foam. The asymmetric cells made with the tailored foams revealed higher (maximum) specific energy (11 14 Wh kg?1) and specific power (1.3 1.4 104 W kg?1) compared to cells assembled with commercial foams (8.4 Wh kg?1 and 6.3 103 W kg?1). The durability tests evidenced that corrosion of the NiCo electrodeposited foams and electrochemical dissolution of MnOx are possible causes of cells degradation.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85125435912&origin=inward; http://dx.doi.org/10.1149/1945-7111/ac4d66; https://iopscience.iop.org/article/10.1149/1945-7111/ac4d66; https://dx.doi.org/10.1149/1945-7111/ac4d66; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=d792c41f-90b1-4892-87c2-8868cb0a25cf&ssb=70041225280&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1149%2F1945-7111%2Fac4d66&ssi=8533d1ed-cnvj-4d05-9dab-cb90595719ed&ssk=botmanager_support@radware.com&ssm=4987211734693552599462853221863890&ssn=4e28ecb9b5a752979646ad32779072f719016db1c10c-a37a-41b2-b85423&sso=40631205-c45fe023bb49c22e9b54d20691f0685fdc5b3a0bd8cc3463&ssp=58303624101723747706172409272647269&ssq=37812174114033278428231741523468205403252&ssr=MzQuMjM2LjI2LjMx&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDA1NjQyMDdlYy1iZmUwLTQzM2UtYjQ1OC1hYjM1MTQ0YzcxMDcxNzIzNzMxNzQxMjU1MzA5Mzk5NDY3LTAzMDIwYzFjODFiNTI3MmE5OTQ2IiwidXpteCI6IjdmOTAwMGEyNTM4ZDllLWU0MDQtNDQ1Mi04MTY0LWM0ZjcxYzRhODk0ZjUtMTcyMzczMTc0MTI1NTMwOTM5OTQ2Ny1lZTkyOWYwZWYzYmQwNjBiOTk0NiJ9
The Electrochemical Society
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