Flexible nanofiber web electrode with high surface area and capacitance for electrochemical capacitor

被引：0
|
作者：
Lee, Soo Jung [1 ]
Lee, Jun Young [1 ]
机构：
[1] Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, Gyeonggi Do, South Korea
来源：
MACROMOLECULAR RESEARCH | 2024年 / 32卷 / 10期
关键词：
Flexible nanofiber web electrode; Electrospinning; Electroless plating; Hydrothermal deposition; Specific capacitance; Electrochemical capacitor; ENERGY-STORAGE; MICRO-SUPERCAPACITORS; POLYMER ELECTROLYTE; MANGANESE OXIDE; PERFORMANCE; FABRICATION; PVDF; MEMBRANES; DESIGN; PAPER;
D O I：
10.1007/s13233-024-00308-z
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Flexible, lightweight electrode for electrochemical capacitor with high surface area and capacitance was successfully prepared based on the electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanofiber web. Electrode was fabricated by three steps. First, PVDF-HFP nanofiber web was formed by electrospinning. Platinum (Pt) thin layer as a current collector was then deposited on the electrospun PVDF-HFP nanofiber web by an electroless plating and followed by deposition of manganese dioxide (MnO2) using a hydrothermal method, finally producing MnO2/Pt/PVDF-HFP nanofiber web electrode. We confirmed formation of MnO2/Pt/PVDF-HFP nanofiber web electrode with desired structure and chemical composition. The galvanic charge-discharge specific capacitance of the flexible MnO2/Pt/PVDF-HFP nanofiber web electrode was 201.4 F/g at current density of 1 mA/cm2. Even after 1000 bending cycles, specific capacitance obtained from cyclic voltammetry of the nanofiber web electrode maintained up to 88.8% of the initial capacitance, implying excellent bending durability of the electrode. Since MnO2/Pt/PVDF-HFP nanofiber web electrode exhibited excellent electrochemical activity and mechanical flexibility, we expect potential applications in flexible, wearable, and stretchable electronic devices.Graphic abstractScheme of fabrication process and surface and cross-section of MnO2/Pt/PVDF-HFP nanofiber web
引用
收藏
页码：1041 / 1048
页数：8
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