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

Citation data:

Journal of Power Sources, ISSN: 0378-7753, Vol: 311, Page: 29-34

Publication Year:
2016
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/18799
DOI:
10.1016/j.jpowsour.2016.02.022
Author(s):
Senthilkumar, Baskar, Khan, Ziyaauddin, Park, Sangmin, Seo, Inseok, Ko, Hyunhyub, Kim, Youngsik
Publisher(s):
Elsevier BV, ELSEVIER SCIENCE BV
Tags:
Engineering, Energy, Chemistry, Aqueous electrolyte, Cobalt phosphate, Electrocatalyst, Sodium super ionic conductor, Sodium-air battery
article description
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, Co(PO) nanostructures by facile precipitation technique and evaluated its electrocatalytic activity. Co(PO) nanostructure was investigated as a potential electrocatalyst for rechargeable aqueous Na-air battery for the first time. The synthesized Co(PO) grain-like nanostructures showed better oxygen evolution activity compared to Pt/C catalyst. The fabricated Na-air battery with the Co(PO) 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.

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