Effect of acid-leaching on carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt (CuTSPc/C) for oxygen reduction reaction in alkaline electrolyte: active site studies

Abstract

Although the non-precious metal catalysts have been extensively studied as low-cost catalyst alternatives to Pt for oxygen reduction reaction (ORR), the nature of the active ORR catalytic sites is still a subject of controversy.