Main Reaction: H2O2 >> O2 + 2 H+ + 2e-

Reference: PubMed ID: 26851092
Authors: Uzunoglu A, Stanciu LA
Title: Novel CeO2-CuO-decorated enzymatic lactate biosensors operating in low oxygen environments.
Published: 2016 Feb 25

H2O2 --> O2 + 2 H + 2e-