Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries
Li–O2 batteries (LOB) potentially have the highest specific capacity among all types of metal‐ion batteries but suffer severely from cycle instability and low energy efficiency. In this work, an integrated cathode is fabricated that contains an amorphous MoS2 thin layer deposited on a 3D conductive...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/92540 http://hdl.handle.net/10220/48606 |
| _version_ | 1811683349239955456 |
|---|---|
| author | Song, Ming Tan, Hua Li, Xianglin Tok, Alfred Iing Yoong Liang, Pei Chao, Dongliang Fan, Hong Jin |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Song, Ming Tan, Hua Li, Xianglin Tok, Alfred Iing Yoong Liang, Pei Chao, Dongliang Fan, Hong Jin |
| author_sort | Song, Ming |
| collection | NTU |
| description | Li–O2 batteries (LOB) potentially have the highest specific capacity among all types of metal‐ion batteries but suffer severely from cycle instability and low energy efficiency. In this work, an integrated cathode is fabricated that contains an amorphous MoS2 thin layer deposited on a 3D conductive carbon scaffold to improve the energy efficiency to ≈83% and cycle life up to 190 cycles. An advanced pressure‐tuned stop‐flow atomic layer deposition (ALD) method is employed to deposit a ≈5 nm thick amorphous MoS2 layer on carbon nanotube forest‐covered graphite foam. It is established that this integrated 3D cathode exhibits high catalytic activity for both oxygen reduction reaction and oxygen evolution reaction. The benefit of the ALD MoS2 in lowering the energy barrier is also supported by first‐principles calculations. Finally, quasi‐solid state flexible LOBs are also assembled that can be stably discharged up to 6 d. This new and rational design of cathode may provide a new direction for achieving high‐performance flexible Li–O2 batteries. |
| first_indexed | 2024-10-01T04:11:19Z |
| format | Journal Article |
| id | ntu-10356/92540 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:11:19Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/925402023-02-28T19:38:00Z Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries Song, Ming Tan, Hua Li, Xianglin Tok, Alfred Iing Yoong Liang, Pei Chao, Dongliang Fan, Hong Jin School of Materials Science & Engineering School of Physical and Mathematical Sciences Atomic Layer Deposition Flexible Batteries DRNTU::Engineering::Materials Li–O2 batteries (LOB) potentially have the highest specific capacity among all types of metal‐ion batteries but suffer severely from cycle instability and low energy efficiency. In this work, an integrated cathode is fabricated that contains an amorphous MoS2 thin layer deposited on a 3D conductive carbon scaffold to improve the energy efficiency to ≈83% and cycle life up to 190 cycles. An advanced pressure‐tuned stop‐flow atomic layer deposition (ALD) method is employed to deposit a ≈5 nm thick amorphous MoS2 layer on carbon nanotube forest‐covered graphite foam. It is established that this integrated 3D cathode exhibits high catalytic activity for both oxygen reduction reaction and oxygen evolution reaction. The benefit of the ALD MoS2 in lowering the energy barrier is also supported by first‐principles calculations. Finally, quasi‐solid state flexible LOBs are also assembled that can be stably discharged up to 6 d. This new and rational design of cathode may provide a new direction for achieving high‐performance flexible Li–O2 batteries. MOE (Min. of Education, S’pore) Accepted version 2019-06-07T08:02:38Z 2019-12-06T18:24:56Z 2019-06-07T08:02:38Z 2019-12-06T18:24:56Z 2019 Journal Article Song, M., Tan, H., Li, X., Tok, A. I. Y., Liang, P., Chao, D., & Fan, H. J. (2019).Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries. Small Methods, 1900274-. doi:10.1002/smtd.201900274 2366-9608 https://hdl.handle.net/10356/92540 http://hdl.handle.net/10220/48606 10.1002/smtd.201900274 en Small Methods This is the peer reviewed version of the following article: Song, M., Tan, H., Li, X., Tok, A. I. Y., Liang, P., Chao, D., & Fan, H. J. (2019).Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries. Small Methods, 1900274-., which has been published in final form at http://dx.doi.org/10.1002/smtd.201900274. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. 21 p. application/pdf |
| spellingShingle | Atomic Layer Deposition Flexible Batteries DRNTU::Engineering::Materials Song, Ming Tan, Hua Li, Xianglin Tok, Alfred Iing Yoong Liang, Pei Chao, Dongliang Fan, Hong Jin Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title | Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title_full | Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title_fullStr | Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title_full_unstemmed | Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title_short | Atomic‐layer‐deposited amorphous MoS2 for durable and flexible Li–O2 batteries |
| title_sort | atomic layer deposited amorphous mos2 for durable and flexible li o2 batteries |
| topic | Atomic Layer Deposition Flexible Batteries DRNTU::Engineering::Materials |
| url | https://hdl.handle.net/10356/92540 http://hdl.handle.net/10220/48606 |
| work_keys_str_mv | AT songming atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT tanhua atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT lixianglin atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT tokalfrediingyoong atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT liangpei atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT chaodongliang atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries AT fanhongjin atomiclayerdepositedamorphousmos2fordurableandflexiblelio2batteries |