Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/78692
Title: Converting spent tea leaves to electrode for energy storage application
Authors: Woo, Meng San
Keywords: Engineering::Environmental engineering
Issue Date: 2019
Abstract: This project examines the feasibility of converting spent tea leaves into activated carbon via the chemical activation process for energy storage application. The activated carbon produced is a potential electrode material as compared to the commercially used TF6 Bipolar graphite plate in Vanadium Redox Flow Battery (VRFB) application. Orthophosphoric acid (H3PO4) was used as the activation reagent with the spent tea leaves at impregnation ratios of 1:1, 1:3 and 1:5. 6 samples were generated, 3 of them were generated from the conventional chemical activation procedure whereas the other 3 were generated with hydrothermal processes with chemical activation. Activated Carbon Characterisation showed better results for samples 1-3 as compared to samples HT4-HT6. However, both the Cyclic Voltammetry analysis and Electrochemical Impedance Spectra analysis showed slightly inferior electrochemical performance as compared to the Tf6 bipolar plate. Hence, further improvements are required to ensure that it is feasible to convert spent tea leaves into activated carbon via the chemical activation process to be used as an electrode for the VRFB energy storage application.
URI: http://hdl.handle.net/10356/78692
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:CEE Student Reports (FYP/IA/PA/PI)

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