Soybean protein-derived N, O co-doped porous carbon sheets for supercapacitor applications

Li, Feng; Yan, Bing; Zheng, Jiaojiao; Chen, Jiayun; Wei, Rongyun; Jiang, Shaohua; Yang, Weisen; Zhang, Qian; He, Shuijian

doi:10.1039/d2nj01355j

Cited by 48 publications

(18 citation statements)

References 63 publications

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“…From another side, G as well as RGO can show almost 100% cycling stability [ 3 , 5 , 6 , 32 ] and its combination with PANI results in more stable graphene/PANI composite electrode material after high number of charge/discharge cycles in the contrast to pristine PANI as also seen from Figure 1 a. Thus, a great interest to a deep analysis of the synergetic effect within RGO and PANI composite is quite justified.…”

Section: Introductionmentioning

confidence: 90%

Synergetic Effect of Polyaniline and Graphene in Their Composite Supercapacitor Electrodes: Impact of Components and Parameters of Chemical Oxidative Polymerization

Okhay

Tkach

2022

Nanomaterials

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The current development of clean and high efficiency energy sources such as solar or wind energy sources has to be supported by the design and fabrication of energy storage systems. Electrochemical capacitors (or supercapacitors (SCs)) are promising devices for energy storage thanks to their highly efficient power management and possible small size. However, in comparison to commercial batteries, SCs do not have very high energy densities that significantly limit their applications. The value of energy density directly depends on the capacitance of full SCs and their cell voltage. Thus, an increase of SCs electrode specific capacitance together with the use of the wide potential window electrolyte can result in high performance SCs. Conductive polymer polyaniline (PANI) as well as carbonaceous materials graphene (G) or reduced graphene oxide (RGO) have been widely studied for usage in electrodes of SCs. Although pristine PANI electrodes have shown low cycling stability and graphene sheets can have low specific capacitance due to agglomeration during their preparation without a spacer, their synergetic effect can lead to high electrochemical properties of G/PANI composites. This review points out the best results for G/PANI composite in comparison to that of pristine PANI or graphene (or RGO). Various factors, such as the ratio between graphene and PANI, oxidants, time, and the temperature of chemical oxidative polymerization, which have been determined to influence the morphology, capacitance, cycling stability, etc. of the composite electrode materials measured in three-electrode system are discussed. Consequently, we provide an in-depth summary on diverse promising approaches of significant breakthroughs in recent years and provide strategies to choose suitable electrodes based on PANI and graphene.

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Section: Introductionmentioning

confidence: 90%

Synergetic Effect of Polyaniline and Graphene in Their Composite Supercapacitor Electrodes: Impact of Components and Parameters of Chemical Oxidative Polymerization

Okhay

Tkach

2022

Nanomaterials

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“…The cyclic stability is a key performance indicator for practical applications. [39][40][41] The NM@NiCoP electrode shows only 8% capacity decay aer 20 000 GCD repeated cycling at 2 mA cm −2 (Fig. 6g), which can be ascribed to the fact that the active NiCoP are rmly attached to the exible transparent conductive NM substrate with an extraordinary structure stability.…”

Section: Resultsmentioning

confidence: 99%

Freestanding ultralight metallic micromesh for high-energy density flexible transparent supercapacitors

Zhang

Zhao

et al. 2022

J. Mater. Chem. A

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“…48 The two peaks with higher bonding energies at 400.6 and 401.4 eV are assigned to the positive charge (−NH + −) and bipolaron (�NH + −) structures in PPy, respectively. 49,50 Additionally, the peak at low binding energy (397.9 eV) is attributed to the �N− defects of PPy. 51 All these characterization results indicate that the prepared hydrogel consists of pure PPy chains.…”

Section: Resultsmentioning

confidence: 99%

One-Step Fabrication of Ice-Templated Pure Polypyrrole Nanoparticle Hydrogels for High-Rate Supercapacitors

Huang

et al. 2022

ACS Appl. Nano Mater.

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Conducting polymer hydrogels with high conductivity, excellent electroactivity, and good mechanical strength are desirable for the design of highperformance energy storage devices. However, they suffer from the issue of low porosity, which hinders electrolyte diffusion and leads to poor rate performance. In this work, we developed a one-step, in situ chemical polymerization approach to fabricate a porous pure polypyrrole hydrogel (PPH) with a desirable nanostructure via an ice-templating strategy. This simple synthetic approach offers the PPH tunable porosity, ultrahigh conductivity, and good mechanical strength. Owing to these notable advantages, functioning as a supercapacitor electrode, PPH displays a high specific capacitance of 265 F g −1 (1961 mF cm −2 ) at 1.35 A g −1 (10 mA cm −2 ) and maintains 85% capacitance retention even up to 67.6 A g −1 (500 mA cm −2 ). We also found that PPH without an ice-templated nanostructure possesses poor rate capability due to slow and blocked electrolyte diffusion because of the less-porous nanostructure. This facile, ice-templated strategy to structurally design a porous nanostructure for high-rate performance opens up the possibility for advanced energy storage applications.

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Soybean protein-derived N, O co-doped porous carbon sheets for supercapacitor applications

Abstract: Biomass-derived heteroatom doped porous carbon is a hot electrode material for supercapacitors. Herein, nitrogen and oxygen co-doped porous carbon sheets are prepared by one-step carbonization-activation of the hybrids of soybean...

Cited by 48 publications

References 63 publications

Synergetic Effect of Polyaniline and Graphene in Their Composite Supercapacitor Electrodes: Impact of Components and Parameters of Chemical Oxidative Polymerization

Synergetic Effect of Polyaniline and Graphene in Their Composite Supercapacitor Electrodes: Impact of Components and Parameters of Chemical Oxidative Polymerization

Freestanding ultralight metallic micromesh for high-energy density flexible transparent supercapacitors

One-Step Fabrication of Ice-Templated Pure Polypyrrole Nanoparticle Hydrogels for High-Rate Supercapacitors

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