Three‐Dimensional Macroporous NiCo2O4 Sheets as a Non‐Noble Catalyst for Efficient Oxygen Reduction Reactions. Issue 42 (5th September 2013)

• Record Type: Journal Article
• Authors: Xiao, Ying; Hu, Chuangang; Qu, Liangti; Hu, Changwen; Cao, Minhua
• Is Part Of: Chemistry. Volume 19:Issue 42(2013)
• Page Start: 14271
• Page End: 14278
• Publication Date: 2013-09-05
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201302193
• Languages: English
• ISSNs: 0947-6539

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A facile and low‐cost strategy is developed to prepare three‐dimensional (3D) macroporous NiCo₂O₄ sheets, which can be used as a highly efficient non‐noble metal electrocatalyst for the oxygen reduction reaction (ORR) in alkaline conditions. The as‐obtained sheets have a thickness of about 150 nm and feature a typical 3D macroporous structure with pore volumes of up to 0.23 cm³ g⁻¹, which could decrease the mass transport resistance and allow easier access of the reactants to the active surface sites. The as‐prepared macroporous NiCo₂O₄ sheets exhibit high electrocatalytic activity for ORR with a four‐electron pathway, good long‐term stability and high tolerance against methanol. The unique 3D macroporous structure and intrinsic properties may be responsible for their high performance.</p> </abstract>