A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts
Aqueous rechargeable zinc (Zn)–air batteries have recently attracted extensive research interest due to their low cost, environmental benignity, safety, and high energy density. However, the sluggish kinetics of oxygen (O<sub>2</sub>) evolution reaction (OER) and the oxygen reduction rea...
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MDPI AG
2022-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/22/4069 |
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| author | Min Wang Xiaoxiao Huang Zhiqian Yu Pei Zhang Chunyang Zhai Hucheng Song Jun Xu Kunji Chen |
| author_facet | Min Wang Xiaoxiao Huang Zhiqian Yu Pei Zhang Chunyang Zhai Hucheng Song Jun Xu Kunji Chen |
| author_sort | Min Wang |
| collection | DOAJ |
| description | Aqueous rechargeable zinc (Zn)–air batteries have recently attracted extensive research interest due to their low cost, environmental benignity, safety, and high energy density. However, the sluggish kinetics of oxygen (O<sub>2</sub>) evolution reaction (OER) and the oxygen reduction reaction (ORR) of cathode catalysts in the batteries result in the high over-potential that impedes the practical application of Zn–air batteries. Here, we report a stable rechargeable aqueous Zn–air battery by use of a heterogeneous two-dimensional molybdenum sulfide (2D MoS<sub>2</sub>) cathode catalyst that consists of a heterogeneous interface and defects-embedded active edge sites. Compared to commercial Pt/C-RuO<sub>2</sub>, the low cost MoS<sub>2</sub> cathode catalyst shows decent oxygen evolution and acceptable oxygen reduction catalytic activity. The assembled aqueous Zn–air battery using hybrid MoS<sub>2</sub> catalysts demonstrates a specific capacity of 330 mAh g<sup>−1</sup> and a durability of 500 cycles (~180 h) at 0.5 mA cm<sup>−2</sup>. In particular, the hybrid MoS<sub>2</sub> catalysts outperform commercial Pt/C in the practically meaningful high-current region (>5 mA cm<sup>−2</sup>). This work paves the way for research on improving the performance of aqueous Zn–air batteries by constructing their own heterogeneous surfaces or interfaces instead of constructing bifunctional catalysts by compounding other materials. |
| first_indexed | 2024-03-09T18:06:19Z |
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| id | doaj.art-c217b8ac7e5b4f89a82d59fd29c93f62 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:06:19Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c217b8ac7e5b4f89a82d59fd29c93f622023-11-24T09:29:10ZengMDPI AGNanomaterials2079-49912022-11-011222406910.3390/nano12224069A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode CatalystsMin Wang0Xiaoxiao Huang1Zhiqian Yu2Pei Zhang3Chunyang Zhai4Hucheng Song5Jun Xu6Kunji Chen7National Laboratory of Solid State Microstructures, School of Electronics Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, ChinaSchool of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, ChinaNational Laboratory of Solid State Microstructures, School of Electronics Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, ChinaCollege of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaSchool of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, ChinaNational Laboratory of Solid State Microstructures, School of Electronics Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, ChinaNational Laboratory of Solid State Microstructures, School of Electronics Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, ChinaNational Laboratory of Solid State Microstructures, School of Electronics Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, ChinaAqueous rechargeable zinc (Zn)–air batteries have recently attracted extensive research interest due to their low cost, environmental benignity, safety, and high energy density. However, the sluggish kinetics of oxygen (O<sub>2</sub>) evolution reaction (OER) and the oxygen reduction reaction (ORR) of cathode catalysts in the batteries result in the high over-potential that impedes the practical application of Zn–air batteries. Here, we report a stable rechargeable aqueous Zn–air battery by use of a heterogeneous two-dimensional molybdenum sulfide (2D MoS<sub>2</sub>) cathode catalyst that consists of a heterogeneous interface and defects-embedded active edge sites. Compared to commercial Pt/C-RuO<sub>2</sub>, the low cost MoS<sub>2</sub> cathode catalyst shows decent oxygen evolution and acceptable oxygen reduction catalytic activity. The assembled aqueous Zn–air battery using hybrid MoS<sub>2</sub> catalysts demonstrates a specific capacity of 330 mAh g<sup>−1</sup> and a durability of 500 cycles (~180 h) at 0.5 mA cm<sup>−2</sup>. In particular, the hybrid MoS<sub>2</sub> catalysts outperform commercial Pt/C in the practically meaningful high-current region (>5 mA cm<sup>−2</sup>). This work paves the way for research on improving the performance of aqueous Zn–air batteries by constructing their own heterogeneous surfaces or interfaces instead of constructing bifunctional catalysts by compounding other materials.https://www.mdpi.com/2079-4991/12/22/4069Zn–air batteries2D MoS<sub>2</sub>defects-embeddedOERORR |
| spellingShingle | Min Wang Xiaoxiao Huang Zhiqian Yu Pei Zhang Chunyang Zhai Hucheng Song Jun Xu Kunji Chen A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts Nanomaterials Zn–air batteries 2D MoS<sub>2</sub> defects-embedded OER ORR |
| title | A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts |
| title_full | A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts |
| title_fullStr | A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts |
| title_full_unstemmed | A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts |
| title_short | A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS<sub>2</sub> Cathode Catalysts |
| title_sort | stable rechargeable aqueous zn air battery enabled by heterogeneous mos sub 2 sub cathode catalysts |
| topic | Zn–air batteries 2D MoS<sub>2</sub> defects-embedded OER ORR |
| url | https://www.mdpi.com/2079-4991/12/22/4069 |
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