Chinese Academy of Sciences Recently, a research group led by Prof. ZHANG Haimin from the Institute of Solid State Physics of the Hefei Institute of Physical Science (HFIPS) reported a highly efficient electrocatalyst for oxygen evolution reaction by in situ generation and systematically illustrated the origin of its excellent performance, which provided a new method for exploiting excellent oxygen evolution reaction (OER) catalysts. “This is an efficient and low-cost transition metal phosphide (TMP) electrocatalyst by a novel impregnation-pyrolysis synthetic method,” said WANG Haojie, a doctoral student of the team. Through chemical activation and pyrolysis, the natural cotton became an excellent porous support for synthesizing and stabilizing the ultrafine Ni