PANI@Co-FeLDHs as highly efficient electrocatalysts for oxygen evolution reaction

We reported a new and facile synthesis route to prepare polyaniline (PANI) nanowire@Co-Fe LDHs nanosheets in two steps. The PANI@Co-Fe LDHs has excellent OER activity with a small overpotential of 261 mV at the current density of 10 mA·cm−2and a small Tafel slope of 67.85 mV·dec−1. The PANI@Co-Fe LDHs also has long-term performance and stability. The excellent electrocatalytic performance of the catalyst depends on the good electrical conductivity of PANI and the effect of the two-dimensional (2D) layered structure of Co-Fe LDHs. The work opens a new application for energy storage and conversion.