Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes

McDonough, John K.; Frolov, Andrey I.; Presser, Volker; Niu, Junjie; Miller, Christopher H.; Ubieto, T.; Fedorov, Maxim V.; Gogotsi, Yury

doi:10.1016/j.carbon.2011.12.022

Cited by 234 publications

(190 citation statements)

References 35 publications

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“…OLC powders, after compressing to free-standing pellets,s how conductivities between 0.9 and 1.8 Scm À1 ,w hereas PTFE-bound OLC electrodes show values of 0.5-1.1 Scm À1 ,w hich is in excellenta greement with the literature. [14,17] For comparison, the electrical conductivity of film electrodes of pure carbon black with 10 wt %P TFE and AC with 5wt% PTFE are approximately 2a nd 0.1 Scm À1 ,r espectively. [46] Although the degree of carbon ordering for CF and OLC is very similar based on our Ramani nvestigation,w es ee that CF mats have ac onductivity an order of magnitude higher( ca.…”

Section: Morphological and Structuralc Haracterizationmentioning

confidence: 99%

“…[17,22,47] The carbonized PANf ibers show as urface area of less than 50 m 2 g À1 ,w hich www.chemelectrochem.org prohibits their use for supercapacitors (at least withouta dditional physicalo rchemical activation). With an increasing amount of OLCs in the hybridmat electrode, the surfacea rea continuously increases for CF500 to maximum values of 313 m 2 g À1 (BET) and 291 m 2 g À1 (DFT).…”

Section: Morphological and Structuralc Haracterizationmentioning

confidence: 99%

“…[1,12] Carbon onions, also known as onion-like carbons (OLCs), are an intriguing class of carbon nanomaterials that consist of spherical carbon nanoparticles, which can be seen as mostly sp 2 -hybridized multishell fullerenes. [13] OLC has been investigated as ap romising materialf or extremelyh igh power-handling applications [14][15][16][17] and ap erformance up to 200 Vs À1 has been described in the literature for OLC micro-supercapacitors (i.e. ultrathin electrodes of just af ew micrometers).…”

Section: Introductionmentioning

confidence: 99%

“…[21] However,t he absence of internal particlep orosity [22] and the nanoscopic particle diameter of around5 -10 nm limits the total specific surfacea rea (SSA) to around2 00-600m 2 g À1 . [14,16,17] Consequently,o nly am oderate specific capacitance between 20 and 60 Fg À1 can be found in organic electrolyte, which corresponds to al ow energy density of, typically,b elow 10 Wh kg À1 . [17] Such performance is low compared to AC or other porous carbons, with typicallym ore than 1200 m 2 g À1 and more than 100 Fg À1 .…”

Section: Introductionmentioning

confidence: 99%

“…[14,16,17] Consequently,o nly am oderate specific capacitance between 20 and 60 Fg À1 can be found in organic electrolyte, which corresponds to al ow energy density of, typically,b elow 10 Wh kg À1 . [17] Such performance is low compared to AC or other porous carbons, with typicallym ore than 1200 m 2 g À1 and more than 100 Fg À1 . [23] Yet, even the latter value corresponds to an energy density roughly one order of magnitude below that of lithium-ion batteries, which resultsi nv ast researche fforts being invested in exploring facile ways to enhance the energystoragec apacity of supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

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Quinone‐Decorated Onion‐Like Carbon/Carbon Fiber Hybrid Electrodes for High‐Rate Supercapacitor Applications

2015

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The energy performance of carbon onions can be significantly enhanced by introducing pseudocapacitive materials, but this is commonly at the cost of power handling. In this study, a novel synergistic electrode preparation method was developed by using carbon‐fiber substrates loaded with quinone‐decorated carbon onions. The electrodes are free standing, binder free, extremely conductive, and the interfiber space filling overcomes the severely low apparent density commonly found for electrospun fibers. Electrochemical measurements were performed in organic and aqueous electrolytes. For both systems, a high electrochemical stability after 10 000 cycles was measured, as well as a long‐term voltage floating test for the organic electrolyte. The capacitance in 1 M H2SO4 was 288 F g−1 for the highest loading of quinones, which is similar to literature values, but with a very high power handling, showing more than 100 F g−1 at a scan rate of 2 Vs−1.

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Section: Morphological and Structuralc Haracterizationmentioning

confidence: 99%

Section: Morphological and Structuralc Haracterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Quinone‐Decorated Onion‐Like Carbon/Carbon Fiber Hybrid Electrodes for High‐Rate Supercapacitor Applications

2015

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Spherical Onion‐Like Carbons

Bobrowska

Płońska‐Brzezińska

2020

Synthesis and Applications of Nanocarbons

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Sustainable Materials for Electrochemical Capacitors

2023

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Highly tunable properties of materials used for the construction of electrochemical capacitors make them a perfect choice for a broad scope of applications with high power demand. The ability to design the system according to the expected power/energy profile allows them being considered as powerful alternatives to conventional capacitors and batteries. Carbon materials with the developed specific surface area are the most common electrode components of electrochemical capacitors because of their cost, versatile form, availability, easiness of processing, and eco-friendly character. Biomass is frequently used for carbon production, however, among many natural organic materials, only some of them should be regarded as a useful precursor. Ongoing research brings many novel concepts of using bio-derived materials in high-performance electrochemical capacitors. This review article summarizes the progress on the applications of abundant biomaterials and materials derived from biomass in the field. Various 'green' resources have been used as precursors for activated carbons, as binders, or as gel (gelating) agents for solid-state electrolytes. The authors attempt to critically evaluate a commercial potential of these materials upon ongoing trends in research & development of electrochemical capacitors. Pros and cons of utilizing the selected biomass materials are provided and perspectives for their advanced processing are discussed.

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Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes

Cited by 234 publications

References 35 publications

Quinone‐Decorated Onion‐Like Carbon/Carbon Fiber Hybrid Electrodes for High‐Rate Supercapacitor Applications

Quinone‐Decorated Onion‐Like Carbon/Carbon Fiber Hybrid Electrodes for High‐Rate Supercapacitor Applications

Spherical Onion‐Like Carbons

Sustainable Materials for Electrochemical Capacitors

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