A ternary nanocatalyst of Ni/Cr/Co oxides with high activity and stability for alkaline glucose electrooxidation. (20th February 2016)

• Record Type: Journal Article
• Authors: Gu, Yingying; Yang, Haihong; Li, Benqiang; An, Yarui
• Is Part Of: Electrochimica acta. Volume 192(2016)
• Page Start: 296
• Page End: 302
• Publication Date: 2016-02-20
• Subjects: Direct glucose fuel cell -- Glucose oxidation -- Electrocatalyst -- Ni-Cr-Co oxides; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.01.186
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: Ni-Cr-Co nanomaterial was synthesized by thermal decomposition method. Ni4 -Cr1 -Co1.5 has the highest GOR activity among the prepared catalysts. A catalytic current density of 23.8 mA × cm −2 is attained for alkaline GOR. Abstract: A novel ternary nanocatalyst of Ni-Cr-Co oxides is synthesized as anode electro-catalysts for glucose oxidation. The nanostructure is characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), which indicates that the catalyst particles are well dispersed with average size of 30 nm when the calcination temperature is 500 °C. The electrochemical performance is evaluated via cyclic voltammetry (CV). Compared with the bimetallic Ni-Cr and Ni-Co nanocatalysts, Ni-Cr-Co electrocatalysts exhibites more negative onset potential (0.4 V) and high oxidation peak current density (23.8 mA cm −2 ) in alkaline media towards glucose oxidation. Meanwhile, the results also show that the Ni-Cr-Co nanomaterial possesses good performance of anti-poisoning capability, reproducibility and long-time stability, which make it an excellent candidate for fuel cell electrocatalyst.