Dual‐Step Redox Engineering of 2D CoNi‐Alloy Embedded B, N‐Doped Carbon Layers Toward Tunable Electromagnetic Wave Absorption and Light‐Weight Infrared Stealth Heat Insulation Devices

Abstract 2D layered metallic graphite composites are promising electromagnetic wave absorption materials (EWAMs) for their combined properties of abundant interlayer free spaces, rich metallic polarized sites, and high conductivity, but the controllable synthesis remains rather challenging. Herein, a dual‐step redox engineering strategy is developed by employing cobalt boron imidazolate framework (Co‐BIF) to construct 2D CoNi‐alloy embedded B, N‐doped carbon layers (2D‐CNC) as a promising EWAM. In the first step, a chemical etching oxidation process on Co‐BIF is used to obtain an optimized 2D‐CoNi‐layered double hydroxide (2D‐CoNi‐LDH) intermediate and in the second, high‐temperature calcination reduction is…

• NN
  National Natural Science Foundation of China

  Awards: 12327804, 52231007, T2321003, 22271178, 22088101, 22001156
• ED
  Education Department of Shaanxi Province

  Award: 23JC007