The oxygen evolution reaction (OER) with sluggish reaction kinetics and large over-potential is the severe reaction in water splitting that seems promising for energy storage and conversion. However, it is still the bottleneck reaction of the water-splitting system because of the slow kinetics and large over-potential during the anodic polarization process. Therefore, it is crucial to develop highly efficient OER catalysts which can lower the over-potential effectively and accelerate reaction kinetics.
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Source: Phys.org