Synthesis of hierarchically porous MnO2/rice husks derived carbon composite as high-performance electrode material for supercapacitors

Yuan, Chuanjun; Lin, Haibo; Lu, Haiyan; Xing, Endong; Zhang, Yusi; Xie, Bingyao

doi:10.1016/j.apenergy.2016.06.057

Cited by 106 publications

(47 citation statements)

References 48 publications

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“…EIS is further carried out to evaluate electrode kinetics, as shown in Figure f. The Nyquist plot shows a depressed semicircle in the high frequency which is related to charge transfer resistance (R ct ), and a straight line in the low frequency range, which reflects ion diffusion (C F ) . The intercept at the beginning of the semicircle reflects the series resistance (R ESR ).…”

Section: Resultsmentioning

confidence: 99%

Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Zhu

Zhang

et al. 2020

ChemistrySelect

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In present work, mulberry-like core-shell structured C@MnO 2 was synthesized as electrodes for Li-ion batteries and pseudocapacitors. Benefiting from the nanoporous shell and conductive carbon core that improve the ion transference and conductivity, the C@MnO 2 delivers excellent electrochemical performance in terms of a stable lithium storage capacity of 553 mAh g À 1 after 250 cycles under 0.5 A g À 1 and a high capacitance up to 274.44F g À 1 under 1 A g À 1 in 6 M KOH and the capacity retention is 90.2% after 5000 cycles. Such electrochemical properties combined with the facile synthesis route make C@MnO 2 promising electrode materials for energy storage.[a] Dr.

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Section: Resultsmentioning

confidence: 99%

Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Zhu

Zhang

et al. 2020

ChemistrySelect

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“…Moreover, many articles indicate that the doping of metal oxide could improve significantly the electrochemical performance of the porous carbon [10][11][12]. On our future research, these experiments will be performed to raise the probability of the rice husk application.…”

Section: Discussionmentioning

confidence: 99%

Preparation and Characterization of Porous Carbon From Rice Husk Applied for Electrode Materials

Huyền¹

2018

JST

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Rice husk (RH) was used as the precursor for porous carbon preparation applying as electrode materials. Porous carbon was synthesized by pyrolysis of RH under inert gas atmosphere followed by hydrothermal treatment in NaOH to remove the silica fraction and K 2 CO 3 activation to increase porosity of archived carbon. The temperature of RH decomposition was determined by the thermal gravimetric analysis (TGA) method in the nitrogen atmosphere. The performance of porous carbon and C-SiO x were examined using Brunauer-Emmett-Teller (BET) measurement and Scanning electron microscopy (SEM). The electrochemical characterizations of the synthesized materials were analyzed using cyclic voltammetry (CV) and chronopotentiometry techniques. The effect of parameters of hydrothermal and activation steps on the capacity of these porous carbons were researched. The activated porous carbon which obtained by K 2 CO 3 activation at 900 0 C in 2 hours has high specific surface area (S BET = 769.3 m 2 /g). Specific capacitance of the as-prepare electrode is 116.2 F.g -1 at scan rate of 5 mV/s. Therefore, as-prepared porous carbon from RH would be proper candidate for application as electrode material.

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“…More recently, attention has been shifted to the use of other sources of biomass or organic waste materials for the production of efficient, low-cost, scalable, locally available and renewable carbon materials for absorbents or energy storage application [32]. This includes materials such as waste tea-leaves [33], potato starch [34], fish scale [35], rice husk [36], waste coffee beans [37] etc. However, reports on the use of activated carbon from pine cones (PCs) for supercapacitor application are few [38,39].…”

Section: Most Of the Commercially Available Activated Carbons (Ac) Usmentioning

confidence: 99%

Asymmetric supercapacitor based on activated expanded graphite and pinecone tree activated carbon with excellent stability

et al. 2017

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This work presents results obtained from the production of low-cost carbons from expanded graphite (EG) and pinecone (PC) biomass, activated in potassium hydroxide (KOH) and finally carbonized in argon and hydrogen atmosphere. A specific surface area of 808 m 2 g-1 and 457 m 2 g-1 were measured for activated pinecone carbon (APC) and activated expanded graphite (AEG), respectively. The electrochemical characterization of the novel materials in a 2electrode configuration as supercapacitor electrode shows a specific capacitance of 69 F g-1 at 0.5 A g-1 , high energy density of 24.6 Wh kg-1 at a power density of 400 W kg-1. This asymmetric supercapacitor also exhibits outstanding stability after voltage holding at the maximum voltage for 110 h, suggesting that the asymmetric device based on different carbon materials has a huge capacity for a high-performance electrode in electrochemical applications.

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Synthesis of hierarchically porous MnO2/rice husks derived carbon composite as high-performance electrode material for supercapacitors

Cited by 106 publications

References 48 publications

Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Preparation and Characterization of Porous Carbon From Rice Husk Applied for Electrode Materials

Asymmetric supercapacitor based on activated expanded graphite and pinecone tree activated carbon with excellent stability

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Synthesis of hierarchically porous MnO2/rice husks derived carbon composite as high-performance electrode material for supercapacitors

Cited by 106 publications

References 48 publications

Mulberry‐Like Core‐Shell Structured C@MnO2 as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Mulberry‐Like Core‐Shell Structured C@MnO2 as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Preparation and Characterization of Porous Carbon From Rice Husk Applied for Electrode Materials

Asymmetric supercapacitor based on activated expanded graphite and pinecone tree activated carbon with excellent stability

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Product

Resources

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Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors

Mulberry‐Like Core‐Shell Structured C@MnO₂ as Electrode Material for Li–Ion Batteries and Pseudo‐Capacitors