「国家杰青」陈接胜领衔！上海交通大学叶天南&南方科技大学邬家臻，最新JACS！

TL;DR - A JACS study introduces a Ni/La-doped Y₂C electride catalyst that separates N₂ activation from H₂ dissociation, enabling efficient and stable ammonia synthesis under relatively mild pressure.

• Y₂C’s electron-rich interlayers activate N₂, while Ni nanoparticles dissociate H₂ and supply reactive hydrogen.
• Spectroscopy and DFT identify moderately activated (N₂)δ⁻ as the key hydrogenatable intermediate; excessive activation produces strongly bound N³⁻.
• La doping balances N₂ binding and activation, raising activity to 34.6 mmol·g⁻¹·h⁻¹ at 400 °C and 1.0 MPa.
• Ni/Y₂C operated stably for over 200 hours and exhibited an activation energy of 46.1 kJ·mol⁻¹.