One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors
A one-step electrochemical method is applied to coaxially deposit highly conductive Co0.85Se nanosheets composed of ultrasmall Co0.85Se nanocrystals on three-dimensional (3D) CoNi2S4 nanotube arrays supported on graphene foam (GF) (Co0.85Se@ CoNi2S4/GF) as an electrode for flexible solid-state super...
| 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/10356/140905 |
| _version_ | 1826116891456831488 |
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| author | Zhang, Chunyan Hou, Mingzhen Cai, Xiaoyi Lin, Jianjian Liu, Xiang Wang, Ruirui Zhou, Lijun Gao, Jingchang Li, Baosheng Lai, Linfei |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhang, Chunyan Hou, Mingzhen Cai, Xiaoyi Lin, Jianjian Liu, Xiang Wang, Ruirui Zhou, Lijun Gao, Jingchang Li, Baosheng Lai, Linfei |
| author_sort | Zhang, Chunyan |
| collection | NTU |
| description | A one-step electrochemical method is applied to coaxially deposit highly conductive Co0.85Se nanosheets composed of ultrasmall Co0.85Se nanocrystals on three-dimensional (3D) CoNi2S4 nanotube arrays supported on graphene foam (GF) (Co0.85Se@ CoNi2S4/GF) as an electrode for flexible solid-state supercapacitors. The Co0.85Se@CoNi2S4/GF electrode has an areal capacitance of 5.25 F cm−2 at 1 mA cm−2 and good rate capability (2.65 F cm−2 at 20 mA cm−2). A solid-state asymmetric supercapacitor with Co0.85Se@NiCo2S4/GF as the cathode and hollow carbon spheres (HCSs) as the anode in a PVA/KOH electrolyte was assembled which shows an energy density of 46.5 W h kg−1 at a power density of 750 W kg−1, and 89.0% capacity retention after 10 000 cycles over a potential window of up to 1.55 V. These results demonstrate that the electrodeposition method is applicable for engineering of 3D microstructured electrodes and also provides an efficient strategy for fabricating transition metal selenide based nanodevices. |
| first_indexed | 2024-10-01T04:18:51Z |
| format | Journal Article |
| id | ntu-10356/140905 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:18:51Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1409052020-06-03T01:01:14Z One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors Zhang, Chunyan Hou, Mingzhen Cai, Xiaoyi Lin, Jianjian Liu, Xiang Wang, Ruirui Zhou, Lijun Gao, Jingchang Li, Baosheng Lai, Linfei School of Physical and Mathematical Sciences Science::Chemistry Electrodeposition CoNi2S4 Nanotube Arrays A one-step electrochemical method is applied to coaxially deposit highly conductive Co0.85Se nanosheets composed of ultrasmall Co0.85Se nanocrystals on three-dimensional (3D) CoNi2S4 nanotube arrays supported on graphene foam (GF) (Co0.85Se@ CoNi2S4/GF) as an electrode for flexible solid-state supercapacitors. The Co0.85Se@CoNi2S4/GF electrode has an areal capacitance of 5.25 F cm−2 at 1 mA cm−2 and good rate capability (2.65 F cm−2 at 20 mA cm−2). A solid-state asymmetric supercapacitor with Co0.85Se@NiCo2S4/GF as the cathode and hollow carbon spheres (HCSs) as the anode in a PVA/KOH electrolyte was assembled which shows an energy density of 46.5 W h kg−1 at a power density of 750 W kg−1, and 89.0% capacity retention after 10 000 cycles over a potential window of up to 1.55 V. These results demonstrate that the electrodeposition method is applicable for engineering of 3D microstructured electrodes and also provides an efficient strategy for fabricating transition metal selenide based nanodevices. 2020-06-03T01:01:14Z 2020-06-03T01:01:14Z 2018 Journal Article Zhang, C., Hou, M., Cai, X., Lin, J., Liu, X., Wang, R., . . . Lai, L. (2018). One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors. Journal of Materials Chemistry A, 6(32), 15630-15639. doi:10.1039/c8ta05131c 2050-7488 https://hdl.handle.net/10356/140905 10.1039/c8ta05131c 2-s2.0-85051747407 32 6 15630 15639 en Journal of Materials Chemistry A © 2018 The Royal Society of Chemistry. All rights reserved. |
| spellingShingle | Science::Chemistry Electrodeposition CoNi2S4 Nanotube Arrays Zhang, Chunyan Hou, Mingzhen Cai, Xiaoyi Lin, Jianjian Liu, Xiang Wang, Ruirui Zhou, Lijun Gao, Jingchang Li, Baosheng Lai, Linfei One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title | One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title_full | One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title_fullStr | One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title_full_unstemmed | One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title_short | One-step coaxial electrodeposition of Co0.85Se on CoNi2S4 nanotube arrays for flexible solid-state asymmetric supercapacitors |
| title_sort | one step coaxial electrodeposition of co0 85se on coni2s4 nanotube arrays for flexible solid state asymmetric supercapacitors |
| topic | Science::Chemistry Electrodeposition CoNi2S4 Nanotube Arrays |
| url | https://hdl.handle.net/10356/140905 |
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