NaBH4-reduction induced tunable oxygen vacancies in LaNiO2.7 to enhance the oxygen evolution reaction

Abstract

Tunable oxygen vacancies of LaNiO₃ (LNO–Vo) are realized by theoretical prediction and the NaBH₄-reduction approach. The LNO_2.7 catalyst exhibits superior catalytic activity and long-term stability for water oxidation. Direct evidence of the active site center and the intermediates is observed from in situ Raman spectra and DFT calculations.