please improve the following writingConcerning perovskite oxides in 2016 Mefford et al discovered a correlation between the oxygen vacancy concentration and oxygen diffusion coefficient of La1-xSrxCoO

In 2016, Mefford et al. made a significant discovery regarding perovskite oxides. They established a correlation between the oxygen vacancy concentration and oxygen diffusion coefficient of La1-xSrxCoO3-δ. Furthermore, this correlation was found to correspond with the catalytic activity of the oxide. This finding supports their hypothesis on the crucial role of lattice oxygen in LaNiO3.