Black Phosphorus/Carbon Nanoframes for Efficient Flexible All-Solid-State Supercapacitor

• Published in: Nanomaterials (Basel, Switzerland) Vol. 12; no. 19; p. 3311
• Main Authors: Duan, Zunbin, Liu, Danni, Ye, Zhaoer, Sun, Caixia, Wang, Zikun, Chen, Kezhen, Li, Yang, Huang, Hao, Zeng, Xiaoliang, Wang, Jiahong, Sun, Rong, Yu, Xue-Feng
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 23-09-2022; MDPI
• Subjects: Analysis; black phosphorus; Capacitance; Carbon; Carbon compounds; carbon nanoparticle; Electric properties; Electrodes; Electrolytes; Embedding; Energy storage; Ethanol; flexible all-solid-state device; Identification and classification; Interlayers; Mechanical properties; Nanocomposites; Nanomaterials; Nanoparticles; Phosphorus; Photovoltaics; Polyvinyl alcohol; Scanning electron microscopy; Solar energy; Solid state; Substrates; supercapacitor; Supercapacitors; Ultracapacitors; China
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano12193311

A flexible all-solid-state supercapacitor with fast charging speed and high power density is a promising high-performance energy storage and sensor device in photovoltaic systems. Two-dimensional black phosphorus (BP) is a prospective electrode nanomaterial, but it struggles to fully exert its properties limited by its self-stacking. Herein, by embedding carbon nanoparticles into the interlayer of BP microplates, the designed BP/carbon nanoframe (BP/C NF) forms a certain nano-gap on the substrate for promoting the orderly transport of charges. The corresponding supercapacitor BP/C SC has a capacity of 372 F g−1, which is higher than that constructed from BP microplates (32.6 F g−1). Moreover, the BP/C SC exhibits good stability with a ca. 90% of capacitance retentions after 10,000 repeated bending and long-term cycles. Thus, the proposed strategy of using BP/carbon nanoframes is feasible to develop exceptional flexible energy devices, and it can guide the design of relevant two-dimensional nanocomposites.