摘要

<正>Electrocatalysts play a key role in sustainable energy storage and conversion devices, such as water electrolysers [1], fuel cells[2], etc. The controllable and uniform dispersion of electrocatalysts on suitable support materials has received increasing attentions in academia and industry. This is because the supports [3] can greatly enhance the catalytic activity and stability of the electrocatalysts through the atomic and electronic interactions between the support and catalytic sites, thus improving the catalytic efficiency of the catalysts, especially for precious metals.