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An Efficient and Functional Fe3O4/Co3O4 Composite for Oxygen Evolution Reaction

Bhatti, Adeel Liaquat (författare)
Univ Sindh, Pakistan
Aftab, Umair (författare)
Mehran Univ Engn & Technol, Pakistan
Tahira, Aneela (författare)
Linköpings universitet,Fysik, elektroteknik och matematik,Tekniska fakulteten
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Abro, Muhammad Ishaq (författare)
Mehran Univ Engn & Technol, Pakistan
Mari, Riaz Hussain (författare)
Univ Sindh, Pakistan
Samoon, Muhammad Kashif (författare)
Univ Sindh, Pakistan
Aghem, Muhammad Hassan (författare)
Univ Sindh, Pakistan
Shaikh, Nek Muhammad (författare)
Univ Sindh, Pakistan
Mugheri, Abdul Qayoom (författare)
Univ Sindh, Pakistan
Ibupoto, Zafar Hussain (författare)
Univ Sindh, Pakistan
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 (creator_code:org_t)
AMER SCIENTIFIC PUBLISHERS, 2021
2021
Engelska.
Ingår i: Journal of Nanoscience and Nanotechnology. - : AMER SCIENTIFIC PUBLISHERS. - 1533-4880 .- 1533-4899. ; 21:4, s. 2675-2680
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • The design of efficient, stable, durable and noble metal free electro catalysts for oxygen evolution reaction (OER) are of immediate need, but very challenging task. In this study, iron induction into cobalt oxide (Co3O4) has resulted composite structure by wet chemical method. The iron impurity has brought an electronic disorder into Fe3O4/cobalt oxide composite thereby efficient oxygen evolution reaction is demonstrated. An addition of iron content into composite resulted the alternation of morphology from Nano rods to clusters of nanoparticles. The successive addition of iron into composite system reduced the onset potential of OER as compared to the pristine cobalt oxide. A Tafel slope of 80 mVdec(-1) indicates the favorable oxygen evolution reaction kinetics on the sample 4. An over-potential of 370 mV is required to reach a 10 mAcm(-2) current density which is acceptable for a nonprecious catalyst. The catalyst is highly durable and stable for 30 hours. Electrochemical impedance spectroscopy further provided a deeper insight on charge transfer resistance and sample 4 has low charge transfer resistance that supported the OER polarization curves. The sample 4 has more electrochemical active surface area of 393.5 cm(2). These obtained results are exciting and highlighting the importance of composite structure and leave a huge space for the future investigations on composite materials for energy related applications.

Ämnesord

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Nyckelord

Fe3O4/Co3O4 Composite; Oxygen Evolution Reaction; Alkaline Media

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