Abstract
Electrocatalysts. Vanadium redox flow batteries employ vanadium at both the positive and negative half-cells in four different oxidation states. The vanadium redox reactions take place on the surface of electrode materials that provide active sites. However, these materials have intrinsically low electrochemical activity, poor kinetic reversibility, and a small amount of surface defects and functional groups. In their Focus Review on page 2096, Jaephil Cho et al. discuss surface modifications to improve the catalytic activity of nanostructured electrocatalysts.
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