Investigation of the utilization of NiO@MnO2 core-shell structures synthesized by hydrothermal method to improve the capacitive performance of NiO-based electrochromic materials.
ID：71
Submission ID：78 View Protection：ATTENDEE
Updated Time：2026-10-09 18:59:59 Hits：15
Poster Presentation
Start Time：2026-10-27 08:10 （Asia/Shanghai）
Duration：1min
Session：[p] Poster » [p] Poster
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Abstract
In this study, a novel NiO@MnO2 core-shell was synthesized by a two-step hydrothermal method to improve the capacitive performance of NiO while preserving its excellent electrochromic performance. The MnO2 shell which hydrothermally for 2 hours (NiMn2) possess an excellent electrochromic performance including high optical modulation (73.03% at 600nm), long cycling-stability (95.40% retention of optical modulation after 500 cycles), and outstanding capacitive performance indicated by prominent areal capacitance (122.29 mF/cm2 at 0.2 mA/cm2) alongside large electrochemical specific surface area (ECSA) (0.2038 cm2). This remarkable electrochromic and capacitive performance resulted from a synergy of porous nanosheet structure, a formation of a MnO2 shell with exceptional capacitive properties, and low charge transfer. This study is the first demonstration that the NiO@MnO2 core-shell structure can be successfully utilized in electrochromism study to improve the poor capacitive performance of NiO.In this study, a novel NiO@MnO2 core-shell was synthesized by a two-step hydrothermal method to improve the capacitive performance of NiO while preserving its excellent electrochromic performance. The MnO2 shell which hydrothermally for 2 hours (NiMn2) possess an excellent electrochromic performance including high optical modulation (73.03% at 600nm), long cycling-stability (95.40% retention of optical modulation after 500 cycles), and outstanding capacitive performance indicated by prominent areal capacitance (122.29 mF/cm2 at 0.2 mA/cm2) alongside large electrochemical specific surface area (ECSA) (0.2038 cm2). This remarkable electrochromic and capacitive performance resulted from a synergy of porous nanosheet structure, a formation of a MnO2 shell with exceptional capacitive properties, and low charge transfer. This study is the first demonstration that the NiO@MnO2 core-shell structure can be successfully utilized in electrochromism study to improve the poor capacitive performance of NiO.
Keywords
Electrochromic,NiO,MnO2,Hydrothermal
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