Metal sulfide and oxide nanostructures as electrocatalysts for hydrogen and oxygen electrodes

• Grant number: 14/11923-5
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: October 01, 2014
• End date: September 30, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Fabio Henrique Barros de Lima
• Grantee: Aniélli Martini Pasqualeti
• Supervisor: Jin Suntivich
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Cornell University, United States
• Associated to the scholarship: 13/03408-0 - Bifunctional Electrocatalysts for Reaction Involved in Regenerative Electrochemical Energy Conversion Devices that Operate with H2/O2., BP.DR

Abstract

The development of electrochemical devices that promote the regenerative electro-conversion between chemical and electrical energy is of great importance for a sustainable energy scenario. The unitized regenerative fuel cells (URFC) are examples of such devices, which require bifunctional electrocatalysts, i.e., active materials for hydrogen evolution/oxidation and for the oxygen evolution/reduction reactions. The development of bifunctional and stable materials is, however, the challenge for URFCs. Platinum-based electrocatalysts are active for the mentioned reactions, but this metal is scarce and, thus, has a high cost. Therefore, it is necessary the development of non-platinum or less expensive active and stable electrocatalysts. Hence, this project aims at the synthesis and investigation of the electrocatalytic activity of bifunctional electrocatalysts consisting, basically, of metal sulfides for the hydrogen evolution/oxidation and metal oxides for oxygen evolution/reduction in alkaline and/or acid electrolyte. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PASQUALETI, ANIELLI M.; PADGETT, ELLIOT; KUO, DING-YUAN; MULLER, DAVID A.; LIMA, FABIO H. B.; SUNTIVICH, JIN. Influence of Aliovalent Substitutions on Oxygen Reduction on Tantalum Oxynitrides. Journal of the Electrochemical Society, v. 164, n. 6, p. F645-F650, 2017. (13/16930-7, 16/13323-0, 13/03408-0, 14/11923-5)