Temperature and doping-tuned coordination environments around electroactive centers in Fe-doped α(β)-Ni(OH) 2 for excellent water splitting

β-Ni(OH) 2 on Ni foam can be synthesized using a hydrothermal method. The addition of Fe 3+ during synthesis produced Fe-doped α-Ni(OH) 2 at 120 °C and Fe-doped β-Ni(OH) 2 at 240 °C. The HER and OER activity of these materials were investigated through both experiment and DFT.