Integrating Low Pt-Based Ternary NiRuPt Nanoalloy on Hybrid TiO2-Based Oxide-Carbon Composite for Enhanced Ethanol Oxidation

Hau Quoc Pham; Tai Thien Huynh

doi:10.1021/acs.jpclett.3c00669

Integrating Low Pt-Based Ternary NiRuPt Nanoalloy on Hybrid TiO₂-Based Oxide-Carbon Composite for Enhanced Ethanol Oxidation

J Phys Chem Lett. 2023 May 18;14(19):4631-4637. doi: 10.1021/acs.jpclett.3c00669. Epub 2023 May 11.

Authors

Hau Quoc Pham^{1

2}, Tai Thien Huynh³

Affiliations

¹ Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, Vietnam.
² The Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Vietnam.
³ Ho Chi Minh City University of Natural Resources and Environment (HCMUNRE), Ho Chi Minh City 700000, Vietnam.

PMID: 37166333
DOI: 10.1021/acs.jpclett.3c00669

Abstract

Ternary NiRuPt nanoscale alloy on hybrid Ti_0.9Ir_0.1O₂-C composite is herein reported to overcome the high cost and tenuous catalytic efficiency of anode catalysts in direct ethanol fuel cells. The small-size NiRuPt alloy is anchored on the Ti_0.9Ir_0.1O₂-C surface via a NaBH₄-ethylene glycol-assisted coreduction route. Benefiting from advantages of favorable structure and synergistic effects of compounds, the NiRuPt/Ti_0.9Ir_0.1O₂-C catalyst exhibits high electrocatalytic performance for the ethanol electro-oxidation reaction (EOR) with mass activity of 720.75 mA mg_Metal^-1 and specific activity of 2.15 mA cm^-2, which are 2.25- and 5-fold increases compared to those of the Pt/C (E-TEK) catalyst. The as-synthesized EOR catalyst also shows impressive anti-CO-poisoning ability and great electrocatalytic stability after 5000-cycling ADT. This work can open up an efficient strategy for designing multicomponent catalysts to reduce Pt content and enhance the catalytic performance of electrocatalysts in renewable energy-related technologies.