Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage
Transition metal oxides hold great promise for lithium‐ion batteries (LIBs) and electrocatalytic water splitting because of their high abundance and high energy density. However, designing and fabrication of efficient, stable, high power density electrode materials are challenging. Herein, we report...
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| Formatua: | Journal Article |
| Hizkuntza: | English |
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2020
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| Sarrera elektronikoa: | https://hdl.handle.net/10356/142176 |
| _version_ | 1826121562367983616 |
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| author | Sun, Zixu Wang, Xinghui Zhao, Hu Koh, See Wee Ge, Junyu Zhao, Yunxing Gao, Pingqi Wang, Guangjin Li, Hong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Sun, Zixu Wang, Xinghui Zhao, Hu Koh, See Wee Ge, Junyu Zhao, Yunxing Gao, Pingqi Wang, Guangjin Li, Hong |
| author_sort | Sun, Zixu |
| collection | NTU |
| description | Transition metal oxides hold great promise for lithium‐ion batteries (LIBs) and electrocatalytic water splitting because of their high abundance and high energy density. However, designing and fabrication of efficient, stable, high power density electrode materials are challenging. Herein, we report rambutan‐like hollow carbon spheres formed by carbon nanosheet decorated with nickel oxide (NiO) rich in metal vacancies (denoted as h ‐NiO/C) as a bifunctional electrode material for LIBs and electrocatalytic oxygen evolution reaction (OER). When being used as the anode of LIBs, the h ‐NiO/C electrode shows a large initial capacity of 885 mA h g−1, a robust stability with a high capacity of 817 mA h g−1 after 400 cycles, and great rate capability with a high reversible capacity of 523 mA h g−1 at 10 A g−1 after 600 cycles. Moreover, working as an OER electrocatalyst, the h ‐NiO/C electrode shows a small overpotential of 260 mV at 10 mA cm−2, a Tafel slope of 37.6 mV dec−1 along with good stability. Our work offers a cost‐effective method for the fabrication of efficient electrode for LIBs and OER. |
| first_indexed | 2024-10-01T05:34:34Z |
| format | Journal Article |
| id | ntu-10356/142176 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:34:34Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1421762023-03-04T17:22:44Z Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage Sun, Zixu Wang, Xinghui Zhao, Hu Koh, See Wee Ge, Junyu Zhao, Yunxing Gao, Pingqi Wang, Guangjin Li, Hong School of Electrical and Electronic Engineering School of Mechanical and Aerospace Engineering Centre for Micro‐/N ano‐electronics(NOVITAS) CINTRA CNRS/NTU/THALES Engineering::Electrical and electronic engineering Bifunctional Materials Hollow Sphere Transition metal oxides hold great promise for lithium‐ion batteries (LIBs) and electrocatalytic water splitting because of their high abundance and high energy density. However, designing and fabrication of efficient, stable, high power density electrode materials are challenging. Herein, we report rambutan‐like hollow carbon spheres formed by carbon nanosheet decorated with nickel oxide (NiO) rich in metal vacancies (denoted as h ‐NiO/C) as a bifunctional electrode material for LIBs and electrocatalytic oxygen evolution reaction (OER). When being used as the anode of LIBs, the h ‐NiO/C electrode shows a large initial capacity of 885 mA h g−1, a robust stability with a high capacity of 817 mA h g−1 after 400 cycles, and great rate capability with a high reversible capacity of 523 mA h g−1 at 10 A g−1 after 600 cycles. Moreover, working as an OER electrocatalyst, the h ‐NiO/C electrode shows a small overpotential of 260 mV at 10 mA cm−2, a Tafel slope of 37.6 mV dec−1 along with good stability. Our work offers a cost‐effective method for the fabrication of efficient electrode for LIBs and OER. MOE (Min. of Education, S’pore) Published version 2020-06-16T12:36:19Z 2020-06-16T12:36:19Z 2019 Journal Article Sun, Z., Wang, X., Zhao, H., Koh, S. W., Ge, J., Zhao, Y., . . . Li, H. (2020). Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage. Carbon Energy, 2(1), 122-130. doi:10.1002/cey2.16 2637-9368 https://hdl.handle.net/10356/142176 10.1002/cey2.16 1 2 122 130 en Carbon Energy © 2019 The Authors. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in anymedium, provided the original work is properly cited and is not used for commercial purposes. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Bifunctional Materials Hollow Sphere Sun, Zixu Wang, Xinghui Zhao, Hu Koh, See Wee Ge, Junyu Zhao, Yunxing Gao, Pingqi Wang, Guangjin Li, Hong Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title | Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title_full | Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title_fullStr | Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title_full_unstemmed | Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title_short | Rambutan‐like hollow carbon spheres decorated with vacancy‐rich nickel oxide for energy conversion and storage |
| title_sort | rambutan like hollow carbon spheres decorated with vacancy rich nickel oxide for energy conversion and storage |
| topic | Engineering::Electrical and electronic engineering Bifunctional Materials Hollow Sphere |
| url | https://hdl.handle.net/10356/142176 |
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