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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Exploration of cobalt phosphate as a potential catalyst for rechargeable aqueous sodium-air battery

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Title
Exploration of cobalt phosphate as a potential catalyst for rechargeable aqueous sodium-air battery
Author
Senthilkumar, BaskarKhan, ZiyaauddinPark, SangminSeo, InseokKo, HyunhyubKim, Youngsik
Keywords
Aqueous electrolyte; Cobalt phosphate; Electrocatalyst; Sodium super ionic conductor; Sodium-air battery
Issue Date
201604
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.311, no., pp.29 - 34
Abstract
Bifunctional catalysts are prominent to attain high capacity, maximum energy efficiency and long cycle-life for aqueous rechargeable Na-air batteries. In this work, we report the synthesis of bi-functional noble metal free, Co3(PO4)2 nanostructures by facile precipitation technique and evaluated its electrocatalytic activity. Co3(PO4)2 nanostructure was investigated as a potential electrocatalyst for rechargeable aqueous Na-air battery for the first time. The synthesized Co3(PO4)2 grain-like nanostructures showed better oxygen evolution activity compared to Pt/C catalyst. The fabricated Na-air battery with the Co3(PO4)2 catalyst as air-cathode delivered low overpotential and its round trip energy efficiency reached up to 83%. The Na-air battery exhibited stable cycle performance up to 50 cycles. © 2016 Elsevier B.V
URI
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DOI
http://dx.doi.org/10.1016/j.jpowsour.2016.02.022
ISSN
0378-7753
Appears in Collections:
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