Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors
Due to their unique spatial structures, layered double hydroxides (LDHs) have been considered as prospective electrode materials for supercapacitors. In this work, several NiCo-LDH materials are obtained via a facile selenization process. This can improve the conductivity and reduce the electrochemi...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/2313-0105/9/1/49 |
| _version_ | 1797446106133561344 |
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| author | Mengdi Wang Xingyu Liu Xiang Wu |
| author_facet | Mengdi Wang Xingyu Liu Xiang Wu |
| author_sort | Mengdi Wang |
| collection | DOAJ |
| description | Due to their unique spatial structures, layered double hydroxides (LDHs) have been considered as prospective electrode materials for supercapacitors. In this work, several NiCo-LDH materials are obtained via a facile selenization process. This can improve the conductivity and reduce the electrochemical impedance of the samples. The 0.4Se-NiCo-LDH materials deliver a specific capacitance of 1396 F/g at 1 A/g. The capacity retention rate can reach 91.38% after 10,000 cycles. In addition, using the prepared materials as a positive electrode, an asymmetric supercapacitor is constructed. It offers an energy density of 60 Wh/kg at a power density of 2700 W/kg, demonstrating that the synthesized samples possess promising applications in future flexible energy-storage systems. |
| first_indexed | 2024-03-09T13:35:28Z |
| format | Article |
| id | doaj.art-d6918467929c4d3493168255b32c22a9 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-09T13:35:28Z |
| publishDate | 2023-01-01 |
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| spelling | doaj.art-d6918467929c4d3493168255b32c22a92023-11-30T21:12:56ZengMDPI AGBatteries2313-01052023-01-01914910.3390/batteries9010049Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance SupercapacitorsMengdi Wang0Xingyu Liu1Xiang Wu2School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, ChinaDue to their unique spatial structures, layered double hydroxides (LDHs) have been considered as prospective electrode materials for supercapacitors. In this work, several NiCo-LDH materials are obtained via a facile selenization process. This can improve the conductivity and reduce the electrochemical impedance of the samples. The 0.4Se-NiCo-LDH materials deliver a specific capacitance of 1396 F/g at 1 A/g. The capacity retention rate can reach 91.38% after 10,000 cycles. In addition, using the prepared materials as a positive electrode, an asymmetric supercapacitor is constructed. It offers an energy density of 60 Wh/kg at a power density of 2700 W/kg, demonstrating that the synthesized samples possess promising applications in future flexible energy-storage systems.https://www.mdpi.com/2313-0105/9/1/49NiCo-LDHselenidesupercapacitorenergy densityspecific capacitance |
| spellingShingle | Mengdi Wang Xingyu Liu Xiang Wu Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors Batteries NiCo-LDH selenide supercapacitor energy density specific capacitance |
| title | Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors |
| title_full | Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors |
| title_fullStr | Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors |
| title_full_unstemmed | Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors |
| title_short | Surface Selenization of NiCo-Layered Double Hydroxide Nanosheets for High-Performance Supercapacitors |
| title_sort | surface selenization of nico layered double hydroxide nanosheets for high performance supercapacitors |
| topic | NiCo-LDH selenide supercapacitor energy density specific capacitance |
| url | https://www.mdpi.com/2313-0105/9/1/49 |
| work_keys_str_mv | AT mengdiwang surfaceselenizationofnicolayereddoublehydroxidenanosheetsforhighperformancesupercapacitors AT xingyuliu surfaceselenizationofnicolayereddoublehydroxidenanosheetsforhighperformancesupercapacitors AT xiangwu surfaceselenizationofnicolayereddoublehydroxidenanosheetsforhighperformancesupercapacitors |