Electrochemical storage of hydrogen in nanocomposite based on nanocellulose and carbon nanotubes modified with bismuth sulfide

• Grant number: 23/06161-8
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2023
• End date: July 31, 2024
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Leonardo Lataro Paim
• Grantee: Gabriela Rocha Sales da Silva
• Host Institution: Faculdade de Engenharia e Ciências (FEC). Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil

Abstract

As a result of the growing socio-environmental problems generated by current popular and non-renewable energy sources, the energy transition needs to be accelerated worldwide, which requires the energy market to include renewable energy sources in the energy and electricity matrix. With these changes in the energy scenario, energy generation, transport, and storage technologies have been developed as a priority. One of the alternatives to fossil fuels, products that are major generators of polluting emissions, is hydrogen. However, its use is limited when the storage stage has yet to have effective methods. In this context and aimed at green chemistry, the current project presents an opportunity to develop a new hydrogen storage technique. The objective is to use nanocomposites made up of nanocellulose, natural nanofiber obtained from the defibration of some raw materials (wood, plants, and herbs), carbon nanotubes with functionalized multiple walls, and bismuth sulfide. For this development, the synthesis of bismuth sulfide anchored in carbon nanotubes will be carried out using the hydrothermal method to obtain Bi_2 S_3-FMWCNT, in addition to the FMWCNT/NC and Bi_2 S_3-FMWCNT/NC nanocomposites will be prepared using techniques similar to wet impregnation. Finally, the nanocomposites will be characterized by MEV-FEG, EDS, BET, TG, DSC, FTIR, and EIS and measured according to their electrochemical hydrogen storage performance using cyclic voltammetry, charge/discharge, and electrochemical impedance techniques, such as evaluations will make it possible to determine the specific capacitance (Fg-1) and the specific hydrogen discharge capacity (mAh g-1).