Activated carbon prepared from waste tire pyrolysis carbon black via CO2/KOH activation used as supercapacitor electrode

Hou, ShengPing; Zhang, Da; Xie, Zhipeng; Kang, Yao; Tang, Zhenggang; Dai, Yongnian; Lei, Yong; Chen, Jian; Feng, Liang

doi:10.1007/s11431-021-2032-3

Cited by 17 publications

(7 citation statements)

References 61 publications

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“…Although the reduction of graphitized structures can weaken the conductivity of carbon materials, the presence of defective structures will provide rich active sites to take part in electrochemical reaction. [10][11][12] To obtain the more detail information about pore structures, the N 2 -adsorption/desorption measurements were carried out. Figure 5a shows the N 2 -adsorption and desorption isotherms of HPI-CNFs and activated samples.…”

Section: Resultsmentioning

confidence: 99%

“…However, the overuse of KOH will cause the microporous structure to penetrate each other or even collapse, leading to the decline of specific surface area and pore volume. [10][11][12] Thus, a proper activation plays an important role in the formation of generous pore structures. Furthermore, the micropores are extremely dominant in the HPI-CNFs sample, while the proportion of mesopores in the activated CNF materials is gradually increased due to strong activation effect.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…[9] It is reported that activation methods are commonly used, including physical and chemical activation (KOH, ZnCl 2 , CO 2 , vapor, HNO 3 , H 2 SO 4 , etc.). [10][11][12] In particular, the introduction of some heteroatoms in continuous carbon skeletons also significantly boosts the capacitive performance due to the improvement of wettability between electrode materials and electrolytes and the generation of additional pseudocapacitance. [13][14][15] It is widely known that polymers are generally employed as the precursors to prepare CNFs, including polyacrylonitrile (PAN), polyimide (PI), polyaniline, phenolic resin, cellulose, lignin, and so on.…”

Section: Introductionmentioning

confidence: 99%

“…[ 9 ] It is reported that activation methods are commonly used, including physical and chemical activation (KOH, ZnCl 2 , CO 2 , vapor, HNO 3 , H 2 SO 4 , etc.). [ 10–12 ] In particular, the introduction of some heteroatoms in continuous carbon skeletons also significantly boosts the capacitive performance due to the improvement of wettability between electrode materials and electrolytes and the generation of additional pseudocapacitance. [ 13–15 ]…”

Section: Introductionmentioning

confidence: 99%

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Activated Carbon Nanofibers Derived from Thermally Rearranged Polyimides for Binder‐Free Supercapacitors

Zheng

et al. 2023

Energy Tech

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Supercapacitors (SCs) based on carbon nanofibers (CNFS) are being paid much attention due to their fast charge–discharge rate, high power density, and excellent cyclic stability. Herein, a kind of preferred hydroxyl‐containing poly(amic acid) solution is first synthesized by using 2,2‐bis(3‐amino‐4‐hydroxyphenyl)hexafluoropropane and pyromellitic dianhydride as monomers, and electrospun to prepare nanofiber membranes. Then, thermal imidization, thermally rearranged treatment, and carbonization are employed to successfully fabricate the corresponding hydroxyl‐containing polyimide (HPI)‐CNFs. Next, the activated CNFS are obtained through a simple activation treatment with KOH. After optimizing the concentration of KOH solution, the self‐standing and binder‐free CNF electrode A–HPI–CNFs–1/3 exhibits a maximum specific surface area of 2058 m2 g−1 and pore volume of 1.04 cm3 g−1, leading to a high specific capacitance of 387.7 F g−1 at 0.5 A g−1 and rate capability of 70% at 10 A g−1. In addition, the assembled symmetrical SC device shows outstanding cycle stability performance after 50000 runs of charge–discharge with a specific capacitance retention of 99.93% at 1 A g−1. Finally, the SC demonstrates a specific power of 12.7 Wh kg−1 at a specific energy of 250.0 W kg−1, suggesting potential application prospects in the field of SCs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Activated Carbon Nanofibers Derived from Thermally Rearranged Polyimides for Binder‐Free Supercapacitors

Zheng

et al. 2023

Energy Tech

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Turning waste tyres into carbon electrodes for batteries: Exploring conversion methods, material traits, and performance factors

Egun,

Liu,

Zheng

et al. 2024

Carbon Energy

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Waste tyres (WTs) are a major global issue that needs immediate attention to ensure a sustainable environment. They are often dumped in landfills or incinerated in open environments, which leads to environmental pollution. However, various thermochemical conversion methods have shown promising results as treatment routes to tackle the WT problem while creating new materials for industries. One such material is WT char, which has properties comparable to those of carbon materials used as an active electrode material in batteries. Therefore, a systematic review of the various thermochemical approaches used to convert WTs into carbon materials for electrode applications was conducted. The review shows that pretreatment processes, various process routes, and operating parameters affect derived carbon properties and its respective electrochemical performance. WT‐derived carbon has the potential to yield a high specific capacity greater than the traditional graphite (372 mAh g−1) commonly used in lithium‐ion batteries. Finally, the review outlines the challenges of the process routes, as well as opportunities and future research directions for electrode carbon materials from WTs.

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Numerical study on waste polyethylene pyrolysis driven by self-sustaining smoldering

Pan,

Wu,

Guene Lougou

et al. 2023

Sci. China Technol. Sci.

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Activated carbon prepared from waste tire pyrolysis carbon black via CO2/KOH activation used as supercapacitor electrode

Cited by 17 publications

References 61 publications

Activated Carbon Nanofibers Derived from Thermally Rearranged Polyimides for Binder‐Free Supercapacitors

Activated Carbon Nanofibers Derived from Thermally Rearranged Polyimides for Binder‐Free Supercapacitors

Turning waste tyres into carbon electrodes for batteries: Exploring conversion methods, material traits, and performance factors

Numerical study on waste polyethylene pyrolysis driven by self-sustaining smoldering

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