Carbon Materials Electrodes: Electrochemical Analysis Applications

Hua, Xin; Shen, Gui Jun; Du, Yu

doi:10.4028/www.scientific.net/amm.248.262

Cited by 2 publications

(1 citation statement)

References 43 publications

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“…Among them, flexible-fiber supercapacitors have attracted extensive attention because of their high power density, rapid charge-discharge rate, good flexibility, and braidability [7,[9][10][11][12]. Carbon materials have been widely used as electrode materials for flexible supercapacitors because of their excellent conductivity, good corrosion resistance, stability, and excellent mechanical properties [7,13,14]. Common carbon-based electrode materials mainly include carbon fibers [15,16], carbon nanotubes [17,18], and graphene [11,19,20].…”

Section: Introductionmentioning

confidence: 99%

Simple Mixed-Acid-Treated Carbon Fiber Electrodes with Oxygen-Containing Functional Groups for Flexible Supercapacitors

Wang

Cui

et al. 2023

J. Compos. Sci.

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Flexible supercapacitors are demanded for energy storage of wearable electronics. In this paper, a simple strategy for preparing flexible carbon fibers (CFs) with good energy storage capacity using a mixed acid treatment process is reported. When the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 3:1, the carbon fiber electrodes have the best electrochemical performance with a high capacitance of 27.83 F g−1 at 15 mA g−1 and extremely high capacitance retention of 79.9% after 500 cycles at 100 mA g−1. Furthermore, their energy density can reach 3.86 Wh kg−1 with a power density of 7.5 W kg−1. Such an excellent electrochemical performance of carbon fiber electrodes is attributed to their surface rich oxygen-containing functional groups, rough surface, and a certain number of graphene quantum dots (GQDs). Importantly, the all-solid-state flexible supercapacitor performs excellent bending stability performance with a capacitance retention of almost 100% after 500 times of bending at 180°, showing good prospects and applications in the field of flexible energy storage devices.

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