Fabrication of Natural Polymer Assisted Mesoporous Co3O4/Carbon Composites for Supercapacitors

Sethuraman, Balasubramanian; Kamaraj, P.

doi:10.1016/j.electacta.2015.04.019

Cited by 57 publications

(18 citation statements)

References 31 publications

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“…But, the poor electrochemical stability, high resistance and low power density hinder its application. In this case, the researchers consider hybrid composites that combine the advantages of carbon‐based EDLCs and transition metal oxide based pseudo‐capacitors . For example, Du et al .…”

Section: Co3o4 Based Nanocompositesmentioning

confidence: 99%

Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application

Wei

Chen

et al. 2020

ChemistrySelect

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Supercapacitors are considered to be one of the most promising development directions of energy storage systems because of their low cost, environmental protection and high energy density. The performance of supercapacitors is determined with the quality of electrode materials. Co3O4, a kind of electrode material for supercapacitor, has attracted more and more attention in recent years due to its advantages of high theoretical capacity, low cost and natural abundance. In this review, the synthesis and electrochemical properties of Co3O4‐based electrode materials are discussed in detail. Finally, the research and development prospect of Co3O4‐based electrode materials have been discussed.

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Section: Co3o4 Based Nanocompositesmentioning

confidence: 99%

Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application

Wei

Chen

et al. 2020

ChemistrySelect

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“…This is due to the pseudocapacitance contribution from both PVF and PPy. Compared to the recently reported transition metal oxide/porous carbon composite materials, the PVF/PPy hybrid has a comparable or slightly higher specific capacitance. Different from metal oxide/carbon composites, the PVF/PPy hybrid is fabricated from a facile electrochemical codeposition method, which can potentially be generalized to various other metallocene‐containing polymers and conducting polymers.…”

Section: Resultsmentioning

confidence: 69%

Electrochemically Nanostructured Polyvinylferrocene/Polypyrrole Hybrids with Synergy for Energy Storage

Tian

Mao

Brown

et al. 2015

Adv Funct Materials

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Unconjugated redox polymers, such as polyvinylferrocene (PVF), have rarely been used for energy storage due to their low intrinsic conductivity. Conducting polymers with conjugated backbones, though conductive, may suffer from insuffi cient exposure to the electrolyte due to the often formed nonporous structures. The present work overcomes this limitation via simultaneous electropolymerization of pyrrole and electroprecipitation of PVF on electrode surfaces. This synthesis method relies on the π-π stacking interactions between the aromatic pyrrole monomers and the metallocene moieties of PVF. This fabrication process results in a highly porous polymer fi lm, which enhances the ion accessibility to polypyrrole (PPy). PPy serves as a "molecular wire," improving the electronic conductivity of the hybrid and the utilization effi ciency of ferrocene. The PVF/PPy hybrid exhibited a specifi c capacitance of 514.1 F g −1 , which signifi cantly exceeds those of PPy (27.3 F g −1 ) and PVF (79.0 F g −1 ), respectively. This approach offers an alternative to nanocarbon materials for improving the electronic conductivity of polymer hybrids, and suggests a new strategy for fabricating nanostructured polymer hybrids. This strategy can potentially be applied to various polymers with π-conjugated backbones and redox polymers with metallocene moieties for applications such as energy storage, sensing, and catalysis.

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“…Hence, the pursuing of high energy density as well as high power density motivates researchers to employ metallic oxide [191][192][193] (e.g. RuO 2 , MnO 2 ) or conducting polymers 194,195 which can provide powerful energy through reversible faraday process.…”

Section: Composites Based On Biomass For Scsmentioning

confidence: 99%

Biomass-derived carbon: synthesis and applications in energy storage and conversion

2016

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The explosive growth of energy consumption hungers for highly efficient energy conversion and storage devices, whose innovation greatly depends on the development of advanced electrode materials and catalysts. Among those advanced materials explored, carbon materials have drawn much attention due to their excellent properties, such as high specific surface area and tunable porous structures. Challenges also come from global warming and environmental pollution, which require sustainable carbon-rich precursors for carbon materials. Hence, the use of biomass for carbon materials features the concept of Green Chemistry. This review has summarized the most advanced progress in biomass-derived carbon for the use of fuel cells, eletrocatalytic water splitting devices, supercapacitors and lithium-ion battery. Several synthetic strategies for synthesizing biomass-derived carbon, including direct pyrolysis, hydrothermal carbonization, and ionothermal carbonization, have been reviewed, and the corresponding formation mechanisms and prospects are also discussed. This provides fundamental insight and offers an important guideline for future design of biomass-derived carbon on specific energy application.Please do not adjust margins Please do not adjust margins process, the activators make great effects on the properties of the final products. Among those activators, KOH is very promising due to its lower activation temperature, hence leading to high yields, and well-defined micropore size distribution with ultrahigh SSA (up to 3000 m 2 /g). Through KOH activation, micropores and small mesopores can be introduced into the framework of various structured carbons. 33 The high SSA and increased micropore and mesopore volume demonstrate excellent properties in energy storage and conversion. Although, the activation mechanism of KOH is complex and it is not understood clearly, three main activation processes for KOH activation of carbon are accepted: 13 1) Potassium compounds, including KOH and some compounds (K 2 CO 3 and K 2 O) formed during the calcination process, react with carbon, generating the pore network; 2) the intermediate products (H 2 O and CO 2 ) contribute to the further development of the porosity via the gasification of carbon; 3) the as-prepared metallic K intercalate into the carbon lattices of carbon matrix effectively, leading to the expansion of the carbon lattices. The porous structure is created, after the metallic K and other K compounds are removed. Fig. 1 (a) Schematic diagram of the formation of HPCs: mixing the biomass with the "leavening" agents followed by pyrolysis under an inert gas, 34 (b) the SEM images with different mass ratio of cellulose, hemicellulose, and lignin. 35 Reproduced with permission from ref. 34, 35. Copyright©Fig. 20 (a) schemiatic mechanism of the synthesis of nanostructured silicon/porous carbon spheres; the charge-discharge curves and schematic diagram of the lithiationdelithiation process (inset) of (a) Si NPs and (c) N-SPC, and (d) their cycling performance at constant densi...

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Fabrication of Natural Polymer Assisted Mesoporous Co3O4/Carbon Composites for Supercapacitors

Cited by 57 publications

References 31 publications

Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application

Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application

Electrochemically Nanostructured Polyvinylferrocene/Polypyrrole Hybrids with Synergy for Energy Storage

Biomass-derived carbon: synthesis and applications in energy storage and conversion

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Fabrication of Natural Polymer Assisted Mesoporous Co3O4/Carbon Composites for Supercapacitors

Cited by 57 publications

References 31 publications

Reviews and Prospectives of Co3O4‐Based Nanomaterials for Supercapacitor Application

Reviews and Prospectives of Co3O4‐Based Nanomaterials for Supercapacitor Application

Electrochemically Nanostructured Polyvinylferrocene/Polypyrrole Hybrids with Synergy for Energy Storage

Biomass-derived carbon: synthesis and applications in energy storage and conversion

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Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application

Reviews and Prospectives of Co₃O₄‐Based Nanomaterials for Supercapacitor Application