Статья

One-Step Wet-Spinning of High-Energy Density Coaxial Fibrous Supercapacitors Based on In Situ Carbon-Modified Nitrogen-Doped MXene Nanosheets

Haonan ZhangSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaYunchuan LuoSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaJie ZhouSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaLongsen WangSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaLeilei ShuSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaWen HeSchool of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, ChinaQi ZhangSchool of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, ChinaPeihong WangKey Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Hefei, Anhui 230601, China

2024en

ABI

Аннотация

Fibrous supercapacitors (SCs) are emerging promising power sources for flexible/wearable electronics and have attracted an extensive amount of attention from researchers. However, the low energy density has always hindered their further development. Here, a coaxial fibrous SC (CFSC) was fabricated by one-step wet-spinning combined with an electrodeposition strategy. Benefiting from the large surface area and abundant pore structure of carbon-modified nitrogen-doped MXene nanosheets (NS), as well as the high conductivity of silver (Ag) NS, the electrolyte ion/electron transport paths are significantly improved. Furthermore, the distributed GO in the P(VDF-HFP) separator could form a high-speed continuous ion transport channel, thus enhancing the ionic conductivity. At a power density of 40–200 μW cm–2, the CFSC shows a high energy density of 0.7–3.39 μWh cm–2. The as-prepared CFSC also maintains an excellent capacitance retention rate of 90.3% even after 15 000 charge–discharge cycles. This work provides a general strategy for manufacturing high-performance, flexible, and wearable SCs.

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Идентификаторы

DOI: 10.1021/acs.nanolett.4c02266

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar