Energy storage devices with high capacity and power

• Grant number: 17/10046-9
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: August 01, 2017
• End date: July 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Roberto Manuel Torresi
• Grantee: Thiago Takeshi Obana
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage, AP.TEM

Abstract

The current energetic and environmental scenario has led the society to define new energy sources, as substitutes for fuels fossils. Moreover, arises, also, the necessity for new energy storage systems, in this context, the Electrochemical Capacitors (EC) fits. Differently of batteries, EC's retains energy from electrical double-layer charging and, at some situations, from fast faradaic reactions, called pseudocapacitive process. The amount of stored energy and the potency released by the devices are other differences between EC and batteries. While EC's possesses low energy density and high potency rates, batteries, otherwise, owns high power density and median potency. Nevertheless, with the advent of nanotechnology came new electrodes materials that flexibilized the threshold between EC's and batteries. Be an electrical double layer capacitor, a pseudo-capacitor, or a hybrid electrochemical capacitor, the use of nanostructured electrodes enabled the development EC's with energetic performance similar with batteries. This fact is due to, not exclusively, high specific surface area in nanostructured materials. At this study, employing electrochemical techniques we shall explore the limits between super-capacitors and batteries, and understand the origin of pseudo-capacitance in those materials and the electrochemical behavior of electrode material. (AU)

Scientific publications

(6)

(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)

VITOR L. MARTINS; HERBERT R. NEVES; IVONNE E. MONJE; MARINA M. LEITE; PAULO F.M. DE OLIVEIRA; RODOLFO M. ANTONIASSI; SUSANA CHAUQUE; WILLIAM G. MORAIS; EDUARDO C. MELO; THIAGO T. OBANA; et al. An Overview on the Development of Electrochemical Capacitors and Batteries – Part I. Anais da Academia Brasileira de Ciências, v. 92, n. 2, 2020-07-06. (17/10046-9, 17/20043-7, 19/09341-1, 17/15456-0, 13/22748-7, 19/02669-1, 18/23072-0, 15/26308-7, 18/11320-0, 17/15469-5)

MARTINS, VITOR L.; NEVES, HERBERT R.; MONJE, IVONNE E.; LEITE, MARINA M.; DE OLIVEIRA, PAULO F. M.; ANTONIASSI, RODOLFO M.; CHAUQUE, SUSANA; MORAIS, WILLIAM G.; MELO, EDUARDO C.; OBANA, THIAGO T.; et al. An Overview on the Development of Electrochemical Capacitors and Batteries - part II. Anais da Academia Brasileira de Ciências, v. 92, n. 2, 2020. (18/11320-0, 19/09341-1, 15/26308-7, 19/02669-1, 17/20043-7, 18/23072-0, 13/22748-7, 17/10046-9, 17/15456-0, 17/15469-5)

VITOR L. MARTINS; HERBERT R. NEVES; IVONNE E. MONJE; MARINA M. LEITE; PAULO F.M. DE OLIVEIRA; RODOLFO M. ANTONIASSI; SUSANA CHAUQUE; WILLIAM G. MORAIS; EDUARDO C. MELO; THIAGO T. OBANA; et al. An Overview on the Development of Electrochemical Capacitors and Batteries – part II. Anais da Academia Brasileira de Ciências, v. 92, n. 2, 2020-07-06. (17/10046-9, 17/20043-7, 19/09341-1, 17/15456-0, 13/22748-7, 19/02669-1, 18/23072-0, 15/26308-7, 18/11320-0, 17/15469-5)

MARTINS, VITOR L.; OBANA, THIAGO T.; TORRESI, ROBERTO M.. Electroactivity of 3D conducting polymers in water-in-salt electrolyte and their electrochemical capacitor performance. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 880, JAN 1 2021. (17/10046-9, 13/22748-7)

OBANA, THIAGO T.; LEITE, MARINA M.; MARTINS, VITOR L.; TORRESI, ROBERTO M.. Downplaying the role of water in the rheological changes of conducting polymers by using water-in-salt electrolytes. Physical Chemistry Chemical Physics, v. 23, n. 21, p. 12251-12259, JUN 7 2021. (19/02669-1, 15/26308-7, 17/10046-9, 20/07768-5, 13/22748-7)

MARTINS, VITOR L.; NEVES, HERBERT R.; MONJE, IVONNE E.; LEITE, MARINA M.; DE OLIVEIRA, PAULO F. M.; ANTONIASSI, RODOLFO M.; CHAUQUE, SUSANA; MORAIS, WILLIAM G.; MELO, EDUARDO C.; OBANA, THIAGO T.; et al. An Overview on the Development of Electrochemical Capacitors and Batteries - Part I. Anais da Academia Brasileira de Ciências, v. 92, n. 2, 2020. (18/11320-0, 19/09341-1, 15/26308-7, 19/02669-1, 17/20043-7, 18/23072-0, 13/22748-7, 17/10046-9, 17/15456-0, 17/15469-5)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OBANA, Thiago Takeshi. Energy storage in highly concentrated electrolyte: an interfacial study. 2021. Doctoral Thesis - Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ) São Paulo.