Catalysts: 3D Architectures of Quaternary Co‐Ni‐S‐P/Graphene Hybrids as Highly Active and Stable Bifunctional Electrocatalysts for Overall Water Splitting (Adv. Energy Mater. 33/2018)

In article number 1802319 , by Dong‐Wan Kim and co‐workers, unique 3D architectures of quaternary (Co 1− x Ni x )(S 1− y Py) 2 /Graphene hybrids are developed as high‐performance bifunctional electrocatalysts for overall water splitting. By structural and compositional engineering, doughnut‐like shaped 3‐dimensional architectures of (Co 1− x Ni x )(S 1− y Py) 2 /Graphene are successfully synthesized. (Co 1− x Ni x )(S 1− y Py) 2 /Graphene achieves excellent electrocatalytic hydrogen and oxygen evolution reaction performance as a bifunctional electrocatalyst for overall water splitting.