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Recent Progress on Nickel-Based Oxide/(Oxy)Hydroxide Electrocatalysts for the Oxygen Evolution Reaction.

Yaping Chen1, Kun Rui1,2, Jixin Zhu2

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Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 20, 2018
PubMed
Summary

This review highlights nickel-based compounds as earth-abundant electrocatalysts for the oxygen evolution reaction (OER). These materials show promise for enhancing efficiency in renewable energy systems like water splitting and metal-air batteries.

Keywords:
electrocatalysisnickel-based catalystsoxidesoxygen evolution reactionwater splitting

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Renewable Energy

Background:

  • The oxygen evolution reaction (OER) is critical for renewable energy technologies but is often limited by catalyst efficiency.
  • Precious-metal catalysts are effective but costly, driving demand for earth-abundant alternatives.
  • Nickel-based compounds are emerging as highly active and stable OER electrocatalysts.

Purpose of the Study:

  • To summarize recent advancements in nickel-based oxide and (oxy)hydroxide composites for OER.
  • To discuss materials design, synthesis, and electrochemical performance of these catalysts.
  • To explore underlying mechanisms and future research directions for Ni-based OER electrocatalysts.

Main Methods:

  • Literature review of recent progress in nickel-based OER electrocatalysts.
  • Analysis of materials design and synthesis strategies.
  • Evaluation of electrochemical performance and catalytic mechanisms.

Main Results:

  • Nickel-based oxides and (oxy)hydroxides demonstrate significant potential as efficient and stable OER electrocatalysts.
  • Understanding catalytic active sites is crucial for further performance enhancement.
  • Various synthesis approaches yield promising results for OER applications.

Conclusions:

  • Nickel-based composites are a leading class of earth-abundant catalysts for the oxygen evolution reaction.
  • Further research into materials design and mechanistic understanding will accelerate their application in sustainable energy systems.
  • These catalysts offer a viable alternative to precious metals for electrochemical water splitting and batteries.