Amorphous-Crystalline CoNiS Heterojunctions with Optimized Interfacial Charge Transfer for Highly Efficient Oxygen Evolution and Urea Oxidation.
Controlling catalyst crystallinity is crucial yet challenging in electrocatalysis. Herein, ZIF-67-derived cobalt-nickel sulfide (CoNiS) with continuously tunable crystallinity from amorphous to semi-crystalline and fully crystalline was synthesized by controlling sulfurization time. The semi-crystalline CoNiS (a/c-CoNi...