Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries
In this manuscript, we synthesize a porous three-dimensional anode material consisting of molybdenum dioxide nanodots anchored on nitrogen (N)/sulfur (S) co-doped reduced graphene oxide (GO) (3D MoO2/NP-NSG) through hydrothermal, lyophilization and thermal treatment. First, the NP-NSG is formed via...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/139790 |
| _version_ | 1826123294248534016 |
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| author | Pei, Jie Geng, Hongbo Ang, Huixiang Zhang, Lingling Wei, Huaixin Cao, Xueqin Zheng, Junwei Gu, Hongwei |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Pei, Jie Geng, Hongbo Ang, Huixiang Zhang, Lingling Wei, Huaixin Cao, Xueqin Zheng, Junwei Gu, Hongwei |
| author_sort | Pei, Jie |
| collection | NTU |
| description | In this manuscript, we synthesize a porous three-dimensional anode material consisting of molybdenum dioxide nanodots anchored on nitrogen (N)/sulfur (S) co-doped reduced graphene oxide (GO) (3D MoO2/NP-NSG) through hydrothermal, lyophilization and thermal treatment. First, the NP-NSG is formed via hydrothermal treatment using graphene oxide, hydrogen peroxide (H2O2), and thiourea as the co-dopant for N and S, followed by calcination of the N/S co-doped GO in the presence of ammonium molybdate tetrahydrate to obtain the 3D MoO2/NP-NSG product. This novel material exhibits a series of out-bound electrochemical performances, such as superior conductivity, high specific capacity, and excellent stability. As an anode for lithium-ion batteries (LIBs), the MoO2/NP-NSG electrode has a high initial specific capacity (1376 mAh g-1), good cycling performance (1250 mAh g-1 after 100 cycles at a current density of 0.2 A g-1), and outstanding Coulombic efficiency (99% after 450 cycles at a current density of 1 A g-1). Remarkably, the MoO2/NP-NSG battery exhibits exceedingly good rate capacities of 1021, 965, 891, 760, 649, 500 and 425 mAh g-1 at different current densities of 200, 500, 1000, 2000, 3000, 4000 and 5000 mA g-1, respectively. The superb electrochemical performance is owed to the high porosity of the 3D architecture, the synergistic effect contribution from N and S co-doped in the reduced graphene oxide (rGO), and the uniform distribution of MoO2 nanodots on the rGO surface. |
| first_indexed | 2024-10-01T06:02:18Z |
| format | Journal Article |
| id | ntu-10356/139790 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:02:18Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1397902020-06-01T10:26:42Z Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries Pei, Jie Geng, Hongbo Ang, Huixiang Zhang, Lingling Wei, Huaixin Cao, Xueqin Zheng, Junwei Gu, Hongwei School of Materials Science & Engineering Engineering::Materials Reduced Graphene Oxide Nitrogen/sulfur Co-doped In this manuscript, we synthesize a porous three-dimensional anode material consisting of molybdenum dioxide nanodots anchored on nitrogen (N)/sulfur (S) co-doped reduced graphene oxide (GO) (3D MoO2/NP-NSG) through hydrothermal, lyophilization and thermal treatment. First, the NP-NSG is formed via hydrothermal treatment using graphene oxide, hydrogen peroxide (H2O2), and thiourea as the co-dopant for N and S, followed by calcination of the N/S co-doped GO in the presence of ammonium molybdate tetrahydrate to obtain the 3D MoO2/NP-NSG product. This novel material exhibits a series of out-bound electrochemical performances, such as superior conductivity, high specific capacity, and excellent stability. As an anode for lithium-ion batteries (LIBs), the MoO2/NP-NSG electrode has a high initial specific capacity (1376 mAh g-1), good cycling performance (1250 mAh g-1 after 100 cycles at a current density of 0.2 A g-1), and outstanding Coulombic efficiency (99% after 450 cycles at a current density of 1 A g-1). Remarkably, the MoO2/NP-NSG battery exhibits exceedingly good rate capacities of 1021, 965, 891, 760, 649, 500 and 425 mAh g-1 at different current densities of 200, 500, 1000, 2000, 3000, 4000 and 5000 mA g-1, respectively. The superb electrochemical performance is owed to the high porosity of the 3D architecture, the synergistic effect contribution from N and S co-doped in the reduced graphene oxide (rGO), and the uniform distribution of MoO2 nanodots on the rGO surface. 2020-05-21T08:14:07Z 2020-05-21T08:14:07Z 2018 Journal Article Pei, J., Geng, H., Ang, H., Zhang, L., Wei, H., Cao, X., . . . Gu, H. (2018). Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries. Nanotechnology, 29(29), 295404-. doi:10.1088/1361-6528/aac02c 0957-4484 https://hdl.handle.net/10356/139790 10.1088/1361-6528/aac02c 29695646 2-s2.0-85048055449 29 29 en Nanotechnology © 2018 IOP Publishing Ltd. All rights reserved. This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at https://doi.org/10.1088/1361-6528/aac02c |
| spellingShingle | Engineering::Materials Reduced Graphene Oxide Nitrogen/sulfur Co-doped Pei, Jie Geng, Hongbo Ang, Huixiang Zhang, Lingling Wei, Huaixin Cao, Xueqin Zheng, Junwei Gu, Hongwei Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title | Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title_full | Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title_fullStr | Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title_full_unstemmed | Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title_short | Three-dimensional nitrogen and sulfur co-doped holey-reduced graphene oxide frameworks anchored with MoO2 nanodots for advanced rechargeable lithium-ion batteries |
| title_sort | three dimensional nitrogen and sulfur co doped holey reduced graphene oxide frameworks anchored with moo2 nanodots for advanced rechargeable lithium ion batteries |
| topic | Engineering::Materials Reduced Graphene Oxide Nitrogen/sulfur Co-doped |
| url | https://hdl.handle.net/10356/139790 |
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