Elastic bracelet for energy storage and supply on wearable technology

• Grant number: 17/03371-0
• Support Opportunities: Scholarships in Brazil - Master
• Effective date (Start): April 01, 2017
• Effective date (End): October 31, 2018
• Field of knowledge: Engineering - Electrical Engineering - Electrical, Magnetic and Electronic Measurements, Instrumentation
• Principal Investigator: Hudson Giovani Zanin
• Grantee: Carla Giselle Martins Real
• Host Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 14/02163-7 - Development of supercapacitors devices from graphene, carbon nanotubes and diamonds, AP.JP

Abstract

In this project we propose to develop prototype of bracelet that acts as battery for wearables technologies. This battery is made of Lithium ion composed of flexible fibers decorated carbon nanotubes. The fibers are of two types, one being composed of carbon nanotubes decorated with polyimide for making the anode and another nanotubes decorated with LiMn2O4 to the cathode. After encapsulated in aqueous medium with Li2SO4, the consolidated fibers a device with the following advantages: (i) power density that exceeds that of most supercapacitors, (ii) energy density equivalent to batteries of thin film lithium ion (iii) flexibility and stretch-ability, (iv) long life, (v) safety and (vi) low risk of environmental pollution in case of improper disposal. With respect to the last two points, there is a great advantage of using aqueous electrolyte because it is not flammable or toxic as organic. Because of its construction in wire format, such battery can be sewn for mesh/fabric, producing energy storers applied to wearables technologies. Besides the bracelet, we develop instrumentation to monitor and store heartbeat and mesure time. The system may transmit radiofrequency signals stored so connected to the cell, which can be monitored in real time. Our promise is that at the end of the 24 months of this project, we will consolidate the prototype that will be expandable to other measures such as blood glucose level, temperature, pulse, respiration, blood pressure, etc. (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)

VICENTINI, RAFAEL; COSTA, LENON HENRIQUE; NUNES, WILLIAN; BOAS, OTAVIO VILAS; SOARES, DAVI MARCELO; ALVES, THAYANE ALMEIDA; REAL, CARLA; BUENO, CAROLINE; PETERLEVITZ, ALFREDO CARLOS; ZANIN, HUDSON. Direct growth of mesoporous Carbon on aluminum foil for supercapacitors devices. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v. 29, n. 12, p. 10573-10582, JUN 2018. (17/11958-1, 17/03371-0, 14/02163-7, 16/25082-8, 17/03640-1, 17/02634-8, 16/21941-6)

Academic Publications

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

REAL, Carla Giselle Martins. Flexible bracelet for energy storage in wearables technology. 2019. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação Campinas, SP.