An activated carbon derived from tobacco waste for use as a supercapacitor electrode material

Chen, Hui; Guo, Yanchuan; Wang, Fu; Wang, Gang; Qi, Peirong; Guo, Xuhong; Dai, Bin; Ye, Feng

doi:10.1016/s1872-5805(17)60140-9

Cited by 101 publications

(16 citation statements)

References 32 publications

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“…The students studied the change in potential as a function of time at a constant current. They then analyzed the capacitance via GCD curves and calculated the specific capacitance of the electrode material based on the continuous current discharge curve and Equation 1 [15,16]:…”

Section: Operation: Training Practical Green Chemistry Ability and Fomentioning

confidence: 99%

Design of an Extended Experiment with Electrical Double Layer Capacitors: Electrochemical Energy Storage Devices in Green Chemistry

Lin

Zhao

et al. 2018

Sustainability

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An extended undergraduate experiment involving electrochemical energy storage devices and green energy is described herein. This experiment allows for curriculum design of specific training modules in the field of green chemistry. Through the study of electrical double layer capacitors, students learned to assemble an electrical double layer capacitor and perform electrochemical measurements (cyclic voltammetry and galvanostatic charge-discharge) to evaluate the effect of various electrolytes. In addition, students powered a diode with the electrical double layer capacitors. We use the laboratory module to successfully connect electrochemistry with green chemistry through the study of a real-world application. In addition, a green chemistry case study was introduced to the laboratory curriculum. During the experiment, students acquired fundamental experience in electrochemistry and gained analysis skills, critical thinking, and scientific literacy. The results of this work can be used as a case study on green chemical education that considers the students’ awareness of renewable and clean energy fields.

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Section: Operation: Training Practical Green Chemistry Ability and Fomentioning

confidence: 99%

Design of an Extended Experiment with Electrical Double Layer Capacitors: Electrochemical Energy Storage Devices in Green Chemistry

Lin

Zhao

et al. 2018

Sustainability

Self Cite

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“…5a, three diffraction peaks at 16°, 22°, and 34° for FS represent the (101), (002), and (004) crystal planes of cellulose (Ma et al 2017). Two obvious peaks are observable at 24° and 42° for activated carbon corresponding to the (002) and (100) planes of amorphous carbon (Chen et al 2017). These changes indicate that the crystalline area of cellulose was destroyed after activation, representing the formation of amorphous carbon.…”

Section: Effect Of Ta On Microcrystalline Structure and Surface Functional Groups Of Activated Carbonmentioning

confidence: 99%

Effect of activation temperature on properties of H3PO4-activated carbon

Sun

Liu

et al. 2021

BioRes

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The effects of different activation temperatures (Ta), ranging from 300 to 750 °C, on the ash content, yield, ignition point, microcrystalline structure, surface functional group, pore structure, and adsorption performance of activated carbon in preparing activated carbon by phosphoric acid (H3PO4) were systematically studied. The yield and volatile content of activated carbon decreased with the increase of Ta, while the ash content, ignition point, and graphitization degree showed the opposite results. The turning point of ash content increasing rate of activated carbon occurred at 500 °C. The thermal decomposition temperature of phosphonate compounds was approximately 450 °C. With increased Ta, micropores were generated first, followed by mesopores. The ignition point of activated carbon was related to the volatile content and the degree of graphitization. Activated carbon with low ash content, high yield, well-developed pore structure and good adsorption performance was prepared at 350 to 425 °C. With increased Ta, the volatile content decreased, and the ignition point of activated carbon increased. At Ta higher than 500 °C, the aromatic and condensed ring structure, graphitization degree, and mesopore ratio of the activated carbon increased, yielding decreased adsorption performance.

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“…where I denotes the discharge current (A), m (g) is the mass load, Δt(t) is the discharge time, ΔV(V) is the potential window of the discharge, E is the energy density and P is the power density [16,17].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Preparation of High Specific Surface Area Activated Carbon from Black Wolfberry Branches as an Efficient Electrode Material for Supercapacitors

Shi¹

2019

International Journal of Electrochemical Science

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Black wolfberry branches are used as raw materials, and the KOH activation method is adopted for producing activated carbons with a high specific surface area. The characterization of the material reveals that with increasing activation temperatures, the specific surface area (SSA) and interconnected microporous/mesoporous structure are augmented. The SSA of the prepared material reaches 2046.07m 2 g-1 and a high pore volume of 0.7cm 3 g-1 is obtained. Furthermore, the prepared material exhibits excellent electrical performance. As an electrode material, the specific capacitance is as high as 355.7F g-1. at a current density of 1 A g-1 , and the capacitance loss rate is 6.4% after 5000 cycles of charging and discharging at a current density of 2 A g-1. These findings indicate that the wolfberry branch is a kind of biomass material, especially suitable for the preparation of super-activated carbon.

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An activated carbon derived from tobacco waste for use as a supercapacitor electrode material

Cited by 101 publications

References 32 publications

Design of an Extended Experiment with Electrical Double Layer Capacitors: Electrochemical Energy Storage Devices in Green Chemistry

Design of an Extended Experiment with Electrical Double Layer Capacitors: Electrochemical Energy Storage Devices in Green Chemistry

Effect of activation temperature on properties of H3PO4-activated carbon

Preparation of High Specific Surface Area Activated Carbon from Black Wolfberry Branches as an Efficient Electrode Material for Supercapacitors

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