Dielectric-metallic double-gradient composition design for stable Zn metal anodes
The commercial implementation of aqueous Zn-ion batteries is being impeded by the rampant dendrite growth and exacerbated side reactions on the Zn metal anodes. Herein, a 60 nm artificial protective layer with spatial dielectric-metallic gradient composition (denoted as GZH) is developed via Zn and...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170242 |
| _version_ | 1826113416121548800 |
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| author | Yang, Jin-Lin Liu, Lingli Yu, Zehua Chen, Pengbo Li, Jia Dananjaya, Putu Andhita Koh, Eng Kang Lew, Wen Siang Liu, Kang Yang, Peihua Fan, Hong Jin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yang, Jin-Lin Liu, Lingli Yu, Zehua Chen, Pengbo Li, Jia Dananjaya, Putu Andhita Koh, Eng Kang Lew, Wen Siang Liu, Kang Yang, Peihua Fan, Hong Jin |
| author_sort | Yang, Jin-Lin |
| collection | NTU |
| description | The commercial implementation of aqueous Zn-ion batteries is being impeded by the rampant dendrite growth and exacerbated side reactions on the Zn metal anodes. Herein, a 60 nm artificial protective layer with spatial dielectric-metallic gradient composition (denoted as GZH) is developed via Zn and HfO2 cosputtering. In this design, the top HfO2 layer with high permittivity and low electronic conductivity effectively suppresses hydrogen evolution. The intermediate Zn-rich oxide region promotes the dendrite-free Zn deposition and reinforces the contact between Zn and the sputtered layer. This design allows stable battery operation at high currents. Symmetric cells with Zn-GZH exhibit stable voltage separation over 500 h at 10 mA cm-2 with a cutoff capacity of 5 mAh cm-2. When paired with a vanadate cathode, the full-cell battery delivers a capacity retention of around 75% after 2000 cycles. This design concept may apply to other aqueous metal batteries. |
| first_indexed | 2024-10-01T03:22:52Z |
| format | Journal Article |
| id | ntu-10356/170242 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:22:52Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1702422023-09-04T07:34:11Z Dielectric-metallic double-gradient composition design for stable Zn metal anodes Yang, Jin-Lin Liu, Lingli Yu, Zehua Chen, Pengbo Li, Jia Dananjaya, Putu Andhita Koh, Eng Kang Lew, Wen Siang Liu, Kang Yang, Peihua Fan, Hong Jin School of Physical and Mathematical Sciences Rolls-Royce@NTU Corporate Lab Science::Physics Science::Chemistry Ion Batteries Metal Anodes The commercial implementation of aqueous Zn-ion batteries is being impeded by the rampant dendrite growth and exacerbated side reactions on the Zn metal anodes. Herein, a 60 nm artificial protective layer with spatial dielectric-metallic gradient composition (denoted as GZH) is developed via Zn and HfO2 cosputtering. In this design, the top HfO2 layer with high permittivity and low electronic conductivity effectively suppresses hydrogen evolution. The intermediate Zn-rich oxide region promotes the dendrite-free Zn deposition and reinforces the contact between Zn and the sputtered layer. This design allows stable battery operation at high currents. Symmetric cells with Zn-GZH exhibit stable voltage separation over 500 h at 10 mA cm-2 with a cutoff capacity of 5 mAh cm-2. When paired with a vanadate cathode, the full-cell battery delivers a capacity retention of around 75% after 2000 cycles. This design concept may apply to other aqueous metal batteries. Ministry of Education (MOE) P.Y. acknowledges the National Natural Science Foundation of China (22209124). H.J.F. acknowledges financial support from the Singapore Ministry of Education by Tier2(MOE-T2EP50121-0006). J.L.Y. is thankful for the financial support by the China Scholarship Council (No.202006210070). 2023-09-04T07:34:11Z 2023-09-04T07:34:11Z 2023 Journal Article Yang, J., Liu, L., Yu, Z., Chen, P., Li, J., Dananjaya, P. A., Koh, E. K., Lew, W. S., Liu, K., Yang, P. & Fan, H. J. (2023). Dielectric-metallic double-gradient composition design for stable Zn metal anodes. ACS Energy Letters, 8(4), 2042-2050. https://dx.doi.org/10.1021/acsenergylett.3c00367 2380-8195 https://hdl.handle.net/10356/170242 10.1021/acsenergylett.3c00367 2-s2.0-85152204171 4 8 2042 2050 en MOE-T2EP50121-0006 ACS Energy Letters © 2023 American Chemical Society. All rights reserved. |
| spellingShingle | Science::Physics Science::Chemistry Ion Batteries Metal Anodes Yang, Jin-Lin Liu, Lingli Yu, Zehua Chen, Pengbo Li, Jia Dananjaya, Putu Andhita Koh, Eng Kang Lew, Wen Siang Liu, Kang Yang, Peihua Fan, Hong Jin Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title | Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title_full | Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title_fullStr | Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title_full_unstemmed | Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title_short | Dielectric-metallic double-gradient composition design for stable Zn metal anodes |
| title_sort | dielectric metallic double gradient composition design for stable zn metal anodes |
| topic | Science::Physics Science::Chemistry Ion Batteries Metal Anodes |
| url | https://hdl.handle.net/10356/170242 |
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