articleJournal of the American Chemical SocietyMay 23, 2017Closed access

Electronic and Morphological Dual Modulation of Cobalt Carbonate Hydroxides by Mn Doping toward Highly Efficient and Stable Bifunctional Electrocatalysts for Overall Water Splitting

TTTang TangWJWenjie JiangSNShuai NiuNLNing LiuHLHao Luo

Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +4 more institutions

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Abstract

Developing bifunctional efficient and durable non-noble electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is highly desirable and challenging for overall water splitting. Herein, Co–Mn carbonate hydroxide (CoMnCH) nanosheet arrays with controllable morphology and composition were developed on nickel foam (NF) as such a bifunctional electrocatalyst. It is discovered that Mn doping in CoCH can simultaneously modulate the nanosheet morphology to significantly increase the electrochemical active surface area for exposing more accessible active sites and tune the electronic structure of Co center to effectively boost its intrinsic activity. As a result, the optimized…

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Topics & keywords

Topics
Keywords
  • Chemistry
  • Bifunctional
  • Cobalt
  • Carbonate
  • Doping
  • Water splitting
  • Dual (grammatical number)
  • Inorganic chemistry
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