Hydrazine Energy Storage: Displacing N₂ H₄ from the Metal Coordination Sphere

Hydrogen carriers, such as hydrazine (N₂ H₄ ), may facilitate long duration energy storage, a vital component for resilient grids by enabling more renewable energy generation. Lanthanide coordination chemistry with N₂ H₄ as well as efforts to displace N₂ H₄ from the metal coordination sphere to develop an efficient catalytic production cycle were detailed. Modeling the equilibrium of different ligand coordination, it was predicted that strong sigma donor molecules would be required to displace N₂ H₄ . Monitoring competition experiments with nuclear magnetic resonance confirmed that trimethyl phosphine oxide, dimethylformamide, and dimethyl sulfoxide displaced N₂ H₄ in large or small lanthanide complexes.