A Template Editing Strategy to Create Interlayer‐Confined Active Species for Efficient and Durable Oxygen Evolution Reaction

• DOI: 10.1002/adma.202203420
• Publication Date: 2022-11-18T08:59:42Z
• Authors: Depei Liu; Yuandong Yan; Hu Li; Duanduan Liu; Yandong Yang; Taozhu Li; Yu Du; Shicheng Yan; Tao Yu; Wei Zhou; Peixin Cui; Zhigang Zou
• Keywords: Oxygen evolution; Overpotential

Substantial overpotentials and insufficient unstable active sites of oxygen evolution reaction (OER) electrocatalysts limit their efficiency stability in OER-related energy conversion storage technologies. Here, a template editing strategy is proposed to graft highly catalytic species onto conductive rigid frameworks tackle this challenge. As successful attempt, two types NiO6 units layered Ni BDC (BDC stands for 1,4-benzenedicarboxylic acid) metal organic are selectively edited by chemical etching-assisted electroxidation create γ-NiOOH with intercalated Ni-O species. In such an interlayer-confined architecture, the large interlayer space high ion permeability offers ideal region sufficiently expose OER comprising high-density species, which also suppresses undesirable γ β phase transformation, thus exhibiting efficient durable activity. result, water oxidation can occur at extremely low overpotential 130 mV affords 1000 h 100 mA cm-2 . The conceptually shows possibility achieving stable homogeneous-like catalysis heterogeneous catalysis.