Erratum: Influence of Cathode Porosity on High Performance Protonic Ceramic Fuel Cells with PrBa0.5Sr0.5Co1.5Fe0.5O5+δ Cathode [J. Electrochem. Soc., 165, F1098 (2018)]. Issue 13 (1st January 2018) - Seong, Arim; Kim, Junyoung; Kim, Jeongwon; Kim, Seona; Sengodan, Sivaprakash; Shin, Jeeyoung; Kim, Guntae