Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery
Aqueous rechargeable zinc-manganese dioxide batteries have attracted extensive attention due to their high energy density, low cost, and environmental friendliness. However, the crystalline MnO2 polymorphs suffer from substantial phase changes upon cycling, leading to structural collapse and poor lo...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147587 |
| _version_ | 1826113174664904704 |
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| author | Cai, Yi Chua, Rodney Huang, Shaozhuan Ren, Hao Srinivasan, Madhavi |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Cai, Yi Chua, Rodney Huang, Shaozhuan Ren, Hao Srinivasan, Madhavi |
| author_sort | Cai, Yi |
| collection | NTU |
| description | Aqueous rechargeable zinc-manganese dioxide batteries have attracted extensive attention due to their high energy density, low cost, and environmental friendliness. However, the crystalline MnO2 polymorphs suffer from substantial phase changes upon cycling, leading to structural collapse and poor long-term cycling performance. Here, a highly reversible amorphous manganese dioxide with structural defects is reported as the cathode for aqueous rechargeable zinc-ion batteries (ARZIBs). Because of the existence of the abundant structural defects and intrinsic isotropic nature, the A-MnO2-δ exhibits significant pseudocapacitive contribution and facilitated reaction kinetics. As expected, the A-MnO2-δ delivers a high specific capacity of 301 mAh g−1 at 100 mA g−1 and long cycle-life with a capacity retention of 78% over 1000 cycles at 1 A g−1, which is better than its crystalline counterparts. In addition, a reversible H+ and Zn2+ two-step insertion storage mechanism of the A-MnO2-δ electrode is demonstrated. This study not only suggests that amorphous manganese dioxide can serve as a stable cathode for ARZIBs but also provides significant guidance to realize other high-capacity and long-lifespan aqueous batteries by using the amorphous materials. |
| first_indexed | 2024-10-01T03:18:54Z |
| format | Journal Article |
| id | ntu-10356/147587 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:18:54Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1475872021-04-09T08:13:04Z Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery Cai, Yi Chua, Rodney Huang, Shaozhuan Ren, Hao Srinivasan, Madhavi School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Materials Amorphous Manganese Dioxide Aqueous Rechargeable Zinc-ion Batteries Aqueous rechargeable zinc-manganese dioxide batteries have attracted extensive attention due to their high energy density, low cost, and environmental friendliness. However, the crystalline MnO2 polymorphs suffer from substantial phase changes upon cycling, leading to structural collapse and poor long-term cycling performance. Here, a highly reversible amorphous manganese dioxide with structural defects is reported as the cathode for aqueous rechargeable zinc-ion batteries (ARZIBs). Because of the existence of the abundant structural defects and intrinsic isotropic nature, the A-MnO2-δ exhibits significant pseudocapacitive contribution and facilitated reaction kinetics. As expected, the A-MnO2-δ delivers a high specific capacity of 301 mAh g−1 at 100 mA g−1 and long cycle-life with a capacity retention of 78% over 1000 cycles at 1 A g−1, which is better than its crystalline counterparts. In addition, a reversible H+ and Zn2+ two-step insertion storage mechanism of the A-MnO2-δ electrode is demonstrated. This study not only suggests that amorphous manganese dioxide can serve as a stable cathode for ARZIBs but also provides significant guidance to realize other high-capacity and long-lifespan aqueous batteries by using the amorphous materials. National Research Foundation (NRF) This work was financially supported by the National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. 2021-04-09T08:10:26Z 2021-04-09T08:10:26Z 2020 Journal Article Cai, Y., Chua, R., Huang, S., Ren, H. & Srinivasan, M. (2020). Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery. Chemical Engineering Journal, 396, 125221-. https://dx.doi.org/10.1016/j.cej.2020.125221 1385-8947 https://hdl.handle.net/10356/147587 10.1016/j.cej.2020.125221 396 125221 en National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. Chemical Engineering Journal © 2020 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Materials Amorphous Manganese Dioxide Aqueous Rechargeable Zinc-ion Batteries Cai, Yi Chua, Rodney Huang, Shaozhuan Ren, Hao Srinivasan, Madhavi Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title | Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title_full | Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title_fullStr | Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title_full_unstemmed | Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title_short | Amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc-ion battery |
| title_sort | amorphous manganese dioxide with the enhanced pseudocapacitive performance for aqueous rechargeable zinc ion battery |
| topic | Engineering::Materials Amorphous Manganese Dioxide Aqueous Rechargeable Zinc-ion Batteries |
| url | https://hdl.handle.net/10356/147587 |
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