Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density
A Master of Science thesis in Chemical Engineering by Halima Ali Sulaiman Khalfan Alnaqbi entitled, “Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density”, submitted in April 2021. Thesis advisor is Dr. Sameer...
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| Format: | doctoralThesis |
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2021
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| Online Access: | http://hdl.handle.net/11073/21521 |
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| _version_ | 1870676404015726592 |
|---|---|
| author | Alnaqbi, Halima Ali Sulaiman Khalfan |
| author_facet | Alnaqbi, Halima Ali Sulaiman Khalfan |
| author_role | author |
| dc.contributor.none.fl_str_mv | Al-Asheh, Sameer Abdelkareem, Mohammad Ali |
| dc.creator.none.fl_str_mv | Alnaqbi, Halima Ali Sulaiman Khalfan |
| dc.date.none.fl_str_mv | 2021-06-24T07:33:08Z 2021-06-24T07:33:08Z 2021-04 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | 35.232-2021.20 http://hdl.handle.net/11073/21521 |
| dc.language.none.fl_str_mv | en_US |
| dc.subject.none.fl_str_mv | Asymmetric supercapacitor Metal-organic frameworks Pseudocapacitive electrode Zinc Copper |
| dc.title.none.fl_str_mv | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/doctoralThesis |
| description | A Master of Science thesis in Chemical Engineering by Halima Ali Sulaiman Khalfan Alnaqbi entitled, “Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density”, submitted in April 2021. Thesis advisor is Dr. Sameer Al-Asheh and thesis co-advisor is Dr. Mohammad Ali Abdelkareem. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form). |
| format | doctoralThesis |
| id | aus_7ca231d7893d49937b1aa2f891273a39 |
| identifier_str_mv | 35.232-2021.20 |
| language_invalid_str_mv | en_US |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/21521 |
| publishDate | 2021 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy DensityAlnaqbi, Halima Ali Sulaiman KhalfanAsymmetric supercapacitorMetal-organic frameworksPseudocapacitive electrodeZincCopperA Master of Science thesis in Chemical Engineering by Halima Ali Sulaiman Khalfan Alnaqbi entitled, “Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density”, submitted in April 2021. Thesis advisor is Dr. Sameer Al-Asheh and thesis co-advisor is Dr. Mohammad Ali Abdelkareem. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).In this thesis, zinc/copper metal-organic frameworks (MOFs) were synthesized on a Cu foam substrate to be used as positive pseudocapacitive electrodes for high-performance asymmetric supercapacitors. This work is divided into three parts; the first one studies the effect of changing the order of adding metal ions in one of the MOFs' preparation steps. The second one compares the performance of the mono and bimetallic MOFs. The third part considers the role of oxidation and sulfurization in improving the performance of MOF-based electrodes. According to the XRD, SEM, and electrochemical performances of the electrodes, the order of 'Cu on Zn' MOF was better than the order of 'Zn on Cu' MOF. The results indicated that the mixed-metals Zn-Cu MOF rendered better electrochemical performance than the pure Zn MOF or the pure Cu MOF. Comparing the performance of the prepared Zn-Cu MOF precursor Layered Double Hydroxide (LDH) electrode and the oxidized and sulfurized electrodes, the Zn-Cu sulfide manifested the best performance with an areal capacity of 0.313 mA h cm‾² at a scan rate of 20 mV/s and a voltage window of 0.6 V, which is higher than that of the oxide and LDH electrodes which rendered 0.147 and 0.131 mA h cm‾², respectively). The Galvanostatic Charge/Discharge (GCD) curves obtained at an areal current density of 1 mA/cm² showed that the charge/discharge times of the sulfide, oxide, and LDH electrodes were 22.83, 12.03, and 6.57 min, respectively. A stability test conducted for 3000 charge/discharge cycles at 20 mA/cm² revealed that the Zn-Cu sulfide electrode renders capacity retention of 85.7%. The results demonstrated that the Zn-Cu MOF sulfide/Cu foam electrode is a good candidate as a positive electrode in pseudocapacitive supercapacitors.College of EngineeringDepartment of Chemical EngineeringMaster of Science in Chemical Engineering (MSChE)Al-Asheh, SameerAbdelkareem, Mohammad Ali2021-06-24T07:33:08Z2021-06-24T07:33:08Z2021-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdf35.232-2021.20http://hdl.handle.net/11073/21521en_USoai:repository.aus.edu:11073/215212026-07-01T06:24:24Z |
| spellingShingle | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density Alnaqbi, Halima Ali Sulaiman Khalfan Asymmetric supercapacitor Metal-organic frameworks Pseudocapacitive electrode Zinc Copper |
| status_str | publishedVersion |
| title | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| title_full | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| title_fullStr | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| title_full_unstemmed | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| title_short | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| title_sort | Zn-Cu Metal-Organic Framework on Cu-Foam Substrate as a Pseudocapacitive Electrode in Asymmetric Supercapacitor Towards Enhanced Energy Density |
| topic | Asymmetric supercapacitor Metal-organic frameworks Pseudocapacitive electrode Zinc Copper |
| url | http://hdl.handle.net/11073/21521 |