Ultra-thin carbon-shell coated Ru/RuO₂@C with rich grain boundaries for efficient and durable acidic water oxidation

Abstract

Developing an acid-stable oxygen evolution reaction (OER) is essential for efficient water splitting, however, high overpotentials and poor stability severely hinder its development. Herein, we present the synthesis of ultra-thin...

A Review on Highly Efficient Ru-Based Electrocatalysts for Acidic Oxygen Evolution Reaction

“…Heterojunctions can not only induce synergy to improve catalytic activity but also effectively improve catalytic stability. In particular, heterojunctions with a core–shell structure can effectively protect the core from oxidation and corrosion. , For example, Qiao’s group reported a core–shell Ru@IrO x electrocatalyst that exhibited redistribution of charge across the heterointerface composed of a Ru core and a partially oxidized Ir shell . The energy-dispersive spectroscopy (EDX) overlap map of Ru and Ir elements (Figure j) in HAADF-STEM mode and line profile across a Ru@IrO x nanocrystal (Figure k) showed that Ru and Ir separate and produce core–shell heterostructures.…”