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Integrating NiCo Alloys with Their Oxides as Efficient Bifunctional Cathode Catalysts for Rechargeable Zinc–Air Batteries
Author(s) -
Liu Xien,
Park Minjoon,
Kim Min Gyu,
Gupta Shiva,
Wu Gang,
Cho Jaephil
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201503612
Subject(s) - bifunctional , electrocatalyst , catalysis , oxygen evolution , bifunctional catalyst , non blocking i/o , zinc , carbon nanotube , materials science , nanocomposite , cathode , inorganic chemistry , chemical engineering , nanotechnology , chemistry , electrochemistry , electrode , metallurgy , organic chemistry , engineering
The lack of high‐efficient, low‐cost, and durable bifunctional electrocatalysts that act simultaneously for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) is currently one of the major obstacles to commercializing the electrical rechargeability of zinc–air batteries. A nanocomposite CoO‐NiO‐NiCo bifunctional electrocatalyst supported by nitrogen‐doped multiwall carbon nanotubes (NCNT/CoO‐NiO‐NiCo) exhibits excellent activity and stability for the ORR/OER in alkaline media. More importantly, real air cathodes made from the bifunctional NCNT/CoO‐NiO‐NiCo catalysts further demonstrated superior performance to state‐of‐the‐art Pt/C or Pt/C+IrO 2 catalysts in primary and rechargeable zinc–air batteries.