Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties

Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties

Supercapacitor (SC) is a type of energy storage systems which has high energy density and power density. Normally, it can divide into two categories, (i) electrical double layer capacitor (EDLC) and (ii) pseudocapacitor (PC). Nowadays, molybdenum dichalcogenides, a type of pseudocapacitive material,...

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Main Author: Yeo, Wan Ping
Format: Undergraduates Project Papers
Language:English
English
English
English
Published: 2016
Subjects:
Q Science (General)
Online Access:http://umpir.ump.edu.my/id/eprint/19508/
http://umpir.ump.edu.my/id/eprint/19508/
http://umpir.ump.edu.my/id/eprint/19508/1/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Table%20of%20contents.pdf
http://umpir.ump.edu.my/id/eprint/19508/2/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Abstract.pdf
http://umpir.ump.edu.my/id/eprint/19508/3/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Chapter%201.pdf
http://umpir.ump.edu.my/id/eprint/19508/4/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-References.pdf
id ump-19508
recordtype eprints
spelling ump-195082017-12-19T03:34:36Z http://umpir.ump.edu.my/id/eprint/19508/ Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties Yeo, Wan Ping Q Science (General) Supercapacitor (SC) is a type of energy storage systems which has high energy density and power density. Normally, it can divide into two categories, (i) electrical double layer capacitor (EDLC) and (ii) pseudocapacitor (PC). Nowadays, molybdenum dichalcogenides, a type of pseudocapacitive material, has received the attention from researchers due to two-dimensional layered structure morphology which similar to the structure of graphene. This thesis dealt with synthesis and characterization of molybdenum dichalcogenides in their electrochemical properties. The objective of the thesis was to synthesize molybdenum dichalcogenides. Besides, the molybdenum dichalcogenides synthesized were characterized with physico-chemical and electrochemical techniques, using X-ray Diffractometer, Field Emission Scanning Electron Microscope and potentiostat-galvanostat respectively. Molybdenum dichalcogenides were synthesized with hydrothermal method; the precursors were mixed in a sealed Teflon jacket and incubated it with suitable temperature and period. X-ray diffraction (XRD) was used to reveal the information about crystal structures and chemical compositions of molybdenum dichalcogenides; field emission electron scanning microscopy (FESEM) was used to check the morphologies of molybdenum dichalcogenides; electrochemical testing was used to test the electrochemical properties of molybdenum dichalcogenides. There were three types of analyses involved for electrochemical testing, (i) cyclic voltammetry (CV), (ii) charge discharge (CDC) and (iii) electrochemical impedance spectroscopy (EIS). The acquired results showed that molybdenum trioxide (MoO3), molybdenum disulphide (MoS2) and molybdenum diselenide (MoSe2) had been produced using hydrothermal method. Each of the molybdenum dichalcogenides had its own structure. MoO3 possessed nanosheet structure; MoS2 possessed nanorod structure; MoSe2 possessed nanorod and nanoplate structures. From electrochemical testing, MoS2 showed better performance in specific capacitance, energy density and coulombic efficiency, with values 117.65 F/g at 5 mV/s, 1.63 Wh/kg at 0.3 A/g and 98.93% respectively. 2016-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/19508/1/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Table%20of%20contents.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19508/2/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Abstract.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19508/3/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Chapter%201.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/19508/4/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-References.pdf Yeo, Wan Ping (2016) Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties. Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:102283&theme=UMP2
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
English
English
English
topic Q Science (General)
spellingShingle Q Science (General)
Yeo, Wan Ping
Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
description Supercapacitor (SC) is a type of energy storage systems which has high energy density and power density. Normally, it can divide into two categories, (i) electrical double layer capacitor (EDLC) and (ii) pseudocapacitor (PC). Nowadays, molybdenum dichalcogenides, a type of pseudocapacitive material, has received the attention from researchers due to two-dimensional layered structure morphology which similar to the structure of graphene. This thesis dealt with synthesis and characterization of molybdenum dichalcogenides in their electrochemical properties. The objective of the thesis was to synthesize molybdenum dichalcogenides. Besides, the molybdenum dichalcogenides synthesized were characterized with physico-chemical and electrochemical techniques, using X-ray Diffractometer, Field Emission Scanning Electron Microscope and potentiostat-galvanostat respectively. Molybdenum dichalcogenides were synthesized with hydrothermal method; the precursors were mixed in a sealed Teflon jacket and incubated it with suitable temperature and period. X-ray diffraction (XRD) was used to reveal the information about crystal structures and chemical compositions of molybdenum dichalcogenides; field emission electron scanning microscopy (FESEM) was used to check the morphologies of molybdenum dichalcogenides; electrochemical testing was used to test the electrochemical properties of molybdenum dichalcogenides. There were three types of analyses involved for electrochemical testing, (i) cyclic voltammetry (CV), (ii) charge discharge (CDC) and (iii) electrochemical impedance spectroscopy (EIS). The acquired results showed that molybdenum trioxide (MoO3), molybdenum disulphide (MoS2) and molybdenum diselenide (MoSe2) had been produced using hydrothermal method. Each of the molybdenum dichalcogenides had its own structure. MoO3 possessed nanosheet structure; MoS2 possessed nanorod structure; MoSe2 possessed nanorod and nanoplate structures. From electrochemical testing, MoS2 showed better performance in specific capacitance, energy density and coulombic efficiency, with values 117.65 F/g at 5 mV/s, 1.63 Wh/kg at 0.3 A/g and 98.93% respectively.
format Undergraduates Project Papers
author Yeo, Wan Ping
author_facet Yeo, Wan Ping
author_sort Yeo, Wan Ping
title Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
title_short Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
title_full Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
title_fullStr Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
title_full_unstemmed Synthesis and characterization of MoX2 (X = O, S, Se, Te) and their electrochemical properties
title_sort synthesis and characterization of mox2 (x = o, s, se, te) and their electrochemical properties
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/19508/
http://umpir.ump.edu.my/id/eprint/19508/
http://umpir.ump.edu.my/id/eprint/19508/1/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Table%20of%20contents.pdf
http://umpir.ump.edu.my/id/eprint/19508/2/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Abstract.pdf
http://umpir.ump.edu.my/id/eprint/19508/3/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-Chapter%201.pdf
http://umpir.ump.edu.my/id/eprint/19508/4/Synthesis%20and%20characterization%20of%20MoX2%20%28X%20%3D%20O%2C%20S%2C%20Se%2C%20Te%29%20and%20their%20electrochemical%20properties%20-References.pdf
first_indexed 2023-09-18T22:27:52Z
last_indexed 2023-09-18T22:27:52Z
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