Figure 5.

A) Schematic diagram of exfoliating LDH. a) LDHs; b) LDHs with interlayer anions and water molecules; d ₂ > d ₁ (interlayer distance); c) exfoliated LDHs into monolayers nanosheets. B) XRD patterns and AFM images. a) XRD patterns including NiFe LDH, NiCo LDH, and CoCo LDH; b) AFM image of monolayer nanosheets of NiCo LDH; c) the corresponding height profile of monolayer nanosheets of NiCo LDH. C) Electrochemical properties. a) LSV polarization curves of synthesized LDHs and IrO₂ at 5 mV s⁻¹ in 1 m KOH electrolyte; b) overpotential of synthesized LDHs and IrO₂ at 10 mA cm⁻²; c) current densities of synthesized LDHs and IrO₂ at an overpotential of 300 mV; d) corresponding Tafel slopes; e) TOF calculated at an overpotential of 300 mV. Reproduced with permission.71 Copyright 2014, Nature Publishing Group.