1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries
Aqueous rechargeable sodium-ion batteries (ARSIBs) are highly desirable for the large-scale energy storage due to their inherent high safety and low-cost. Na-Mn-O electrode material has been considered as a promising cathode, yet the redox potential window is still not fully explored and utilized in...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/140903 |
| _version_ | 1826127298204532736 |
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| author | Chua, Rodney Cai, Yi Kou, Zong Kui Satish, Rohit Ren, Hao Chan, Jun Jie Zhang, Liping Morris, Samuel Alexander Bai, Jianming Srinivasan, Madhavi |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Chua, Rodney Cai, Yi Kou, Zong Kui Satish, Rohit Ren, Hao Chan, Jun Jie Zhang, Liping Morris, Samuel Alexander Bai, Jianming Srinivasan, Madhavi |
| author_sort | Chua, Rodney |
| collection | NTU |
| description | Aqueous rechargeable sodium-ion batteries (ARSIBs) are highly desirable for the large-scale energy storage due to their inherent high safety and low-cost. Na-Mn-O electrode material has been considered as a promising cathode, yet the redox potential window is still not fully explored and utilized in aqueous rechargeable sodium-ion batteries. Herein, a chemical bonded Na0.44MnO2 (NMO) plates are successfully synthesized via a polyvinylpyrrolidone-assisted sol-gel route followed by annealing process. The possibility of utilizing a wider potential window ranging between −0.3 V and 1.0 V vs. Ag/AgCl in mild aqueous electrolyte has been thus demonstrated by using NMO plates as cathodes for the first time. As a result, the as-synthesized NMO plates can deliver a highest initial discharge capacity of 77.2 mA h g−1 at a current density of 100 mA g−1, compared with previous Na-Mn-O reports in mild aqueous electrolyte in ARSIBs. Even at a high rate of 500 mA g−1, it still maintains a large capacity of 35 mA h g−1 after 1000 cycles, demonstrating its superior cycling stability. In addition, ex situ SEM and TEM-EDX results reveal that there is a newly formed sheet-like layer Na-birnessite Na0.55Mn2O4·1.5H2O on the surface of NMO cathodes, which can provide extra ion channel for sodium ions and stabilize the electrode from pulverization, resulting in improved cycling stability. This study provides a broad implication for developing low-cost, high performance cathode materials to broaden the applied potential window towards high performance ARSIBs. |
| first_indexed | 2024-10-01T07:06:37Z |
| format | Journal Article |
| id | ntu-10356/140903 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:06:37Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1409032023-07-14T16:01:58Z 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries Chua, Rodney Cai, Yi Kou, Zong Kui Satish, Rohit Ren, Hao Chan, Jun Jie Zhang, Liping Morris, Samuel Alexander Bai, Jianming Srinivasan, Madhavi School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Research Techno Plaza Engineering::Materials Aqueous Rechargeable Sodium-ion Batteries Widened Potential Window Aqueous rechargeable sodium-ion batteries (ARSIBs) are highly desirable for the large-scale energy storage due to their inherent high safety and low-cost. Na-Mn-O electrode material has been considered as a promising cathode, yet the redox potential window is still not fully explored and utilized in aqueous rechargeable sodium-ion batteries. Herein, a chemical bonded Na0.44MnO2 (NMO) plates are successfully synthesized via a polyvinylpyrrolidone-assisted sol-gel route followed by annealing process. The possibility of utilizing a wider potential window ranging between −0.3 V and 1.0 V vs. Ag/AgCl in mild aqueous electrolyte has been thus demonstrated by using NMO plates as cathodes for the first time. As a result, the as-synthesized NMO plates can deliver a highest initial discharge capacity of 77.2 mA h g−1 at a current density of 100 mA g−1, compared with previous Na-Mn-O reports in mild aqueous electrolyte in ARSIBs. Even at a high rate of 500 mA g−1, it still maintains a large capacity of 35 mA h g−1 after 1000 cycles, demonstrating its superior cycling stability. In addition, ex situ SEM and TEM-EDX results reveal that there is a newly formed sheet-like layer Na-birnessite Na0.55Mn2O4·1.5H2O on the surface of NMO cathodes, which can provide extra ion channel for sodium ions and stabilize the electrode from pulverization, resulting in improved cycling stability. This study provides a broad implication for developing low-cost, high performance cathode materials to broaden the applied potential window towards high performance ARSIBs. Accepted version 2020-06-02T14:36:40Z 2020-06-02T14:36:40Z 2019 Journal Article Chua, R., Cai, Y., Kou, Z. K., Satish, R., Ren, H., Chan, J. J., . . . Srinivasan, M. (2019). 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries. Chemical Engineering Journal, 370, 742-748. doi:10.1016/j.cej.2019.03.251 1385-8947 https://hdl.handle.net/10356/140903 10.1016/j.cej.2019.03.251 370 742 748 en NRF-NRFI2017-08 MOE2015-T2-1-046 Chemical Engineering Journal © 2019 Elsevier B.V. All rights reserved. This paper was published in Chemical Engineering Journal and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Materials Aqueous Rechargeable Sodium-ion Batteries Widened Potential Window Chua, Rodney Cai, Yi Kou, Zong Kui Satish, Rohit Ren, Hao Chan, Jun Jie Zhang, Liping Morris, Samuel Alexander Bai, Jianming Srinivasan, Madhavi 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title | 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title_full | 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title_fullStr | 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title_full_unstemmed | 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title_short | 1.3 V superwide potential window sponsored by Na-Mn-O plates as cathodes towards aqueous rechargeable sodium-ion batteries |
| title_sort | 1 3 v superwide potential window sponsored by na mn o plates as cathodes towards aqueous rechargeable sodium ion batteries |
| topic | Engineering::Materials Aqueous Rechargeable Sodium-ion Batteries Widened Potential Window |
| url | https://hdl.handle.net/10356/140903 |
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