PAN/lignin and LaMnO3-derived hybrid nanofibers for self-standing high-performance energy storage electrode materials

Gang, Ha‐Eun; Park, Gyutae; Jeon, Ha‐Bin; Kim, Soo-Yeon; Jeong, Young Gyu

doi:10.1007/s10853-021-06528-3

Cited by 11 publications

(1 citation statement)

References 47 publications

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“…[13][14][15] Among them, CNFs have many advantages due to their simple fabrication method and facile application as self-standing electrodes for energy storage devices without additional polymeric binders and/or metallic current collectors. In general, CNFs with one-dimensional morphology and tunable size can be fabricated into two-dimensional porous webs in large quantities through simple and versatile electrospinning and carbonization process of polymeric precursors including polyacrylonitrile (PAN), [16][17][18] polyimide, [19][20][21] poly(vinyl alcohol) (PVA), aromatic polyamide, [22] etc. However, the energy density of neat CNFs derived from polymeric precursors needs to be further improved for practical applications as energy storage electrodes.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Carbon Nanofibers Derived from MXene Nanosheets and Aromatic Poly(ether amide) for Self‐Standing Electrochemical Energy Storage Materials

Kwon

Lee

Hwang

et al. 2022

Macro Materials & Eng

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The microstructure, electrical and electrochemical properties of MXene/aromatic poly(ether amide) (PEA)‐derived hybrid carbon nanofibers (HCNFs) as high‐performance free‐standing supercapacitor electrode materials are reported. For this purpose, a series of HCNFs are fabricated by sequential methods of electrospinning of PEA solutions, dip‐coating (1–10 cycles) of as‐spun PEA nanofibers into MXene aqueous dispersion, and heat‐treatment of MXene‐coated PEA nanofibers for carbonization. The structural analyses of HCNFs reveal that MXene nanosheets are uniformly deposited on PEA‐derived and nitrogen self‐doped CNFs and that they are accumulated with increasing the number of dip‐coating cycles. Accordingly, the electrical conductivity increases from 3.94 S cm−1 for PEA‐derived neat CNF to 15.74 S cm−1 for HCNF10 (10 dip‐coating cycles) due to the increase in the content of electrically conductive MXene nanosheets. On the other hand, the electrochemical performance is measured to be the highest in HCNF7 (7 dip‐coating cycles) owing to a trade‐off effect of ion barrier function and high electrical conductivity of MXene nanosheets to porous CNF webs. For a symmetric supercapacitor setup of two self‐standing HCNF7 electrodes, outstanding electrochemical properties of specific capacitance of 66.7–179.3 F g−1, power density of 1000–10 000 W kg−1, and energy density of 52.7–91.2 Wh kg−1 are attained at current densities of 1–10 A g−1.

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