3D Ti/TiO2 current collector for stable zinc metal anode
In recent years, Zinc-ion aqueous batteries (ZIABs) have gained significance in popularity as an alternative to Lithium-ion batteries (LIBs) due to their ease of accessibility, cost efficiency compared to Lithium, safety aspects, and environmental friendliness. However, despite many favourable...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147679 |
| _version_ | 1811697289151905792 |
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| author | Ong, Wen Qing |
| author2 | Alex Yan Qingyu |
| author_facet | Alex Yan Qingyu Ong, Wen Qing |
| author_sort | Ong, Wen Qing |
| collection | NTU |
| description | In recent years, Zinc-ion aqueous batteries (ZIABs) have gained significance in
popularity as an alternative to Lithium-ion batteries (LIBs) due to their ease of
accessibility, cost efficiency compared to Lithium, safety aspects, and environmental
friendliness. However, despite many favourable advantages, ZIABs still face
challenges, particularly in the formation of dendrites on the Zn anode surface, which
limits the electrochemical performance and cycle stability of ZIABs. In this Final Year
Project (FYP), a 3D Ti/TiO2 nanotube current collector coupled with Zn anode
(Zn@3D Ti/TiO2) was fabricated to ensure uniform Zn2+ ions diffusion such that there
will be a homogenous Zn2+ ions plating and stripping reaction during the charging and
discharging process. Material characterization tests were carried out to evaluate the
morphology, crystallinity well as elemental analysis of the fabricated 3D Ti/TiO2
nanotubes and synthesized Zn@3D Ti/TiO2 electrode. Next, electrochemical
characterization tests were carried out in symmetric coin batteries and full cell coin
batteries. The Zn@3D Ti/TiO2 | | Zn@3D Ti/TiO2 symmetric coin batteries cell was
evaluated against bare Zn || Zn symmetric coin batteries cells which was revealed to
have satisfactory cycle stability. Lastly, the electrochemical performance of Zn@3D
Ti/TiO2 || CNT@MnO2 full cell coin batteries were evaluated against bare Zn || MnO2
full cell coin batteries. From the result, the fabricated full cell coin batteries had a
higher specific capacity over a longer cycle period with higher cycle stability as
compared to bare Zn || MnO2 full cell coin batteries. Hence, the issue of capacity fading
caused by Zn dendrites due to inhomogeneous Zn2+ ions was better controlled. In
conclusion, the proposed strategy showed improvement of the cycle stability of ZIABs
by ensuring uniform Zn2+ ions diffusion to achieve homogenous Zn2+ ions plating and
stripping reaction during the charging and discharging process. |
| first_indexed | 2024-10-01T07:52:53Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/147679 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:52:53Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1476792023-03-04T15:43:42Z 3D Ti/TiO2 current collector for stable zinc metal anode Ong, Wen Qing Alex Yan Qingyu School of Materials Science and Engineering AlexYan@ntu.edu.sg Engineering::Materials In recent years, Zinc-ion aqueous batteries (ZIABs) have gained significance in popularity as an alternative to Lithium-ion batteries (LIBs) due to their ease of accessibility, cost efficiency compared to Lithium, safety aspects, and environmental friendliness. However, despite many favourable advantages, ZIABs still face challenges, particularly in the formation of dendrites on the Zn anode surface, which limits the electrochemical performance and cycle stability of ZIABs. In this Final Year Project (FYP), a 3D Ti/TiO2 nanotube current collector coupled with Zn anode (Zn@3D Ti/TiO2) was fabricated to ensure uniform Zn2+ ions diffusion such that there will be a homogenous Zn2+ ions plating and stripping reaction during the charging and discharging process. Material characterization tests were carried out to evaluate the morphology, crystallinity well as elemental analysis of the fabricated 3D Ti/TiO2 nanotubes and synthesized Zn@3D Ti/TiO2 electrode. Next, electrochemical characterization tests were carried out in symmetric coin batteries and full cell coin batteries. The Zn@3D Ti/TiO2 | | Zn@3D Ti/TiO2 symmetric coin batteries cell was evaluated against bare Zn || Zn symmetric coin batteries cells which was revealed to have satisfactory cycle stability. Lastly, the electrochemical performance of Zn@3D Ti/TiO2 || CNT@MnO2 full cell coin batteries were evaluated against bare Zn || MnO2 full cell coin batteries. From the result, the fabricated full cell coin batteries had a higher specific capacity over a longer cycle period with higher cycle stability as compared to bare Zn || MnO2 full cell coin batteries. Hence, the issue of capacity fading caused by Zn dendrites due to inhomogeneous Zn2+ ions was better controlled. In conclusion, the proposed strategy showed improvement of the cycle stability of ZIABs by ensuring uniform Zn2+ ions diffusion to achieve homogenous Zn2+ ions plating and stripping reaction during the charging and discharging process. Bachelor of Engineering (Materials Engineering) 2021-04-10T14:56:07Z 2021-04-10T14:56:07Z 2021 Final Year Project (FYP) Ong, W. Q. (2021). 3D Ti/TiO2 current collector for stable zinc metal anode. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/147679 https://hdl.handle.net/10356/147679 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Ong, Wen Qing 3D Ti/TiO2 current collector for stable zinc metal anode |
| title | 3D Ti/TiO2 current collector for stable zinc metal anode |
| title_full | 3D Ti/TiO2 current collector for stable zinc metal anode |
| title_fullStr | 3D Ti/TiO2 current collector for stable zinc metal anode |
| title_full_unstemmed | 3D Ti/TiO2 current collector for stable zinc metal anode |
| title_short | 3D Ti/TiO2 current collector for stable zinc metal anode |
| title_sort | 3d ti tio2 current collector for stable zinc metal anode |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/147679 |
| work_keys_str_mv | AT ongwenqing 3dtitio2currentcollectorforstablezincmetalanode |