Free-standing porous carbon foam as the ultralight and flexible supercapacitor electrode

Mu, Chundi; Feng, Yi; Tian, Ren‐Rong; Chen, Qian; Chen, Jinghang; Jia, Mingjun; Yao, Jianfeng

doi:10.1016/j.carbon.2020.01.093

Cited by 62 publications

(25 citation statements)

References 33 publications

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“…As shown in Figure 5 a,b, the CV curves of all obtained materials were almost rectangular shape at the same scan rate, showing superior EDLC (electrochemical double layer capacitors) behavior. 36 − 38 Among them, PC-0.3-800 acquires the highest CV curve area among the studied from CV curves, indicating its best charge storage capacity. Figure S1 exhibits the CV curves of PC-0.3-800 at different scan rates from 10 to 100 mV/s.…”

Section: Resultsmentioning

confidence: 97%

Yeast-Based Porous Carbon with Superior Electrochemical Properties

et al. 2021

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Biomass is a promising carbon source for supercapacitor electrode materials due to its abundant source, diversity, and low-cost. Yeast is an elliptic unicellular fungal organism that is widespread in nature. In this work, we used yeast as the carbon source and Na 2 SiO 3 as the activator to prepare a honeycomb porous carbon with higher surface area. The yeast and Na 2 SiO 3 were directly mixed and ground without any solvent, which is simple and characterized by large-scale application. The prepared porous carbon shows a good specific capacity of 313 F/g in 6 M KOH at a density of 0.5 A/g and an excellent rate capability of 85.9% from 0.5 to 10 A/g. The results suggest that the yeast-derived porous carbon may be a promising sustainable bio-material for the preparation of supercapacitor carbon electrode materials. This study provides an economical and practical avenue for yeast resource utilization and develops a simple approach to prepare porous carbon materials.

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Section: Resultsmentioning

confidence: 97%

Yeast-Based Porous Carbon with Superior Electrochemical Properties

et al. 2021

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“…The wide application of high electrochemical performance of SCs or batteries is closely related to the features of electrodes [5][6][7][8][9]. Taking SCs for example, the electrode materials should have large specific surface area, high conductivity/low electrical resistance and short ion diffusion path to guarantee the high specific capacity, rate capability and cycling performance [5,[10][11][12][13]. Moreover, with the increasing demand for portable and wearable devices, flexibility and foldable feature of electrode are highly needed.…”

Section: Introductionmentioning

confidence: 99%

Writing ink-promoted synthesis of electrodes with high energy storage performance: A review

Feng

Tian

et al. 2021

Journal of Energy Chemistry

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“…This was explained by the addition of CQDs, which changes the self‐assembly form of Ni−Co double hydroxide from lamellar to rod‐like interwoven network structure. The specific surface area was improved effectively, and the reactive sites were increased, which is beneficial to the electrochemical performance [27] . In addition, it can be seen from the pore size distribution diagram that the pore size of NiCo‐LDH is mainly concentrated in micropore region (0–2 nm).…”

Section: Resultsmentioning

confidence: 94%

“…The specific surface area was improved effectively, and the reactive sites were increased, which is beneficial to the electrochemical performance. [27] In addition, it can be seen from the pore size distribution diagram that the pore size of NiCo-LDH is mainly concentrated in micropore region (0-2 nm). However, when CQDs were added, the pore size distribution of the samples is not only in the region of micropores, but also in the region of mesopores (2-50 nm).…”

Section: Chemelectrochemmentioning

confidence: 99%

Biomass‐Derived Carbon Quantum Dots‐Induced Self‐Assembly of 3D Networks of Nickel‐Cobalt Double Hydroxide Nanorods as High‐Performance Electrode Materials for Supercapacitors

Zhuang

Wang

et al. 2022

ChemElectroChem

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The nickel-cobalt double hydroxide hybrid materials induced by biomass-derived carbon quantum dots (CQDs) have a threedimensional network structure of cross-linked nanorods. The results demonstrate that the functional groups on the CQDs derived from pomelo peel promoted the nucleation and confined the growth of nickel-cobalt double hydroxide. The assynthesized NiCo-LDH-CQDs-20 exhibits the high specific capacitance of 1814 F g À 1 at 1 A g À 1 . When the current density is increased to 15 A g À 1 , the specific capacitance value remains 75.5 % of the initial one, which indicates that NiCo-LDH-CQDs-20 has an extremely high-rate performance. Furthermore, the asymmetric supercapacitor NiCo-LDH-CQDs-20//AC provides a high energy density of 46.47 Wh kg À 1 in 2 M KOH solution with a power density of 800 W kg À 1 and maintains an initial specific capacitance of 82.7 % after 2000 cycles. Therefore, this study provides a promising approach for the development of anode active materials in supercapacitor energy storage devices.

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Free-standing porous carbon foam as the ultralight and flexible supercapacitor electrode

Cited by 62 publications

References 33 publications

Yeast-Based Porous Carbon with Superior Electrochemical Properties

Yeast-Based Porous Carbon with Superior Electrochemical Properties

Writing ink-promoted synthesis of electrodes with high energy storage performance: A review

Biomass‐Derived Carbon Quantum Dots‐Induced Self‐Assembly of 3D Networks of Nickel‐Cobalt Double Hydroxide Nanorods as High‐Performance Electrode Materials for Supercapacitors

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