Advanced search
Start date

Modified electrodes for mixing entropy batteries

Grant number: 14/19393-5
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2014
Effective date (End): October 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal researcher:Fritz Cavalcante Huguenin
Grantee:Cainã de Oliveira
Home Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


This project involves studies directed to mixing entropy batteries, aiming to produce electrical work from the increased entropy produced by mixing solutions with different salt concentrations. Considering the extensive coastal region and the volume of fluvial water, Brazil has a huge energy reservoir that can be converted into chemical energy. Alkali ions host matrices can be used in the recovery of entropic energy of mixing water from the seas and rivers. The natural water transposition cycle and the low environmental impact generated in this process allow the use of these clean energy sources for sustainable growth. Moreover, this technology can be exploited in wastewater treatment in industries and sewage substations.Electrodes based on polycyanometalates with sodium ions storage properties will be synthesized and investigated for application as positive electrode in mixing entropy batteries. Structural changes in Prussian blue are necessary for enhancement of the storage capacity, insertion rate, and stability in different chemical environments. The materials will be investigated from cyclic voltammetry, chronopotentiometry, electrochemical impedance spectroscopy, electrochemical microbalance quartz crystal, and scanning electron microscopy.

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items