| Autor: |
Cheng Jin An |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Advanced Materials Interfaces, Vol 10, Iss 6, Pp n/a-n/a (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2196-7350 |
| DOI: |
10.1002/admi.202201993 |
| Popis: |
Abstract Many emerging technologies urgently require powerful energy storage devices, and their development depends largely on advances in material performance to meet commercialization requirements. Here, the synthesis of a novel structure of a Ni–Fe layered double hydroxide (LDH) interconnected nanoweb is achieved at low temperature (100 °C) using a wet‐chemistry synthesis method. The 3D porous structure consists of interconnected nanowires and produces a very high specific capacitance of 1656.0 F g−1 at a scan rate of 1 mV s−1, which is more than double that recorded for a conventional Ni–Fe LDH nanosheet with a wrinkled structure (787.2 F g−1 at 1 mV s−1). This superior performance is primarily attributed to the 3D porous structure, which provides a large surface area and facilitates electron transport along the interconnected nanowires, thereby shortening the electrolyte diffusion path. A hybrid supercapacitor using the Ni–Fe LDH nanoweb as the cathode material has a high capacitance of 56.2 F g−1 with an energy density of 20.0 Wh kg−1. This unique structure offers significant potential for the preparation of high‐performance supercapacitors and opens a new route for the structural design and development of high‐efficiency electrode materials in numerous energy storage fields. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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