Pseudocapacitance of zeolite-templated carbon in organic electrolytes

Nueangnoraj, Khanin; Nishihara, Hirotomo; Ishii, Takafumi; Yamamoto, Nozomi; Itoi, Hiroyuki; Berenguer, R.; Ruiz-Rosas, Ramiro; Cazorla‐Amorós, Diego; Morallón, Emilia; Ito, Masashi; Kyotani, Takashi

doi:10.1016/j.ensm.2015.08.003

Cited by 45 publications

(34 citation statements)

References 35 publications

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“…GMS exhibits a unique trapezoidal voltammogram ascribed to the electrochemical doping in semiconducting nanocarbons similar to the case of SWNTs, which suggests the presence of semiconducting nanographene in GMS . The CV pattern of GMS has a less intense anodic peak than that seen in the pattern of YP‐50F above 0.9 V. Thus, GMS is free from the occurrence of undesirable corrosion reactions . To further evaluate the electro‐oxidation stability, the specific capacitance is plotted against the upper‐limit potential (Figure b).…”

Section: Resultsmentioning

confidence: 97%

Oxidation‐Resistant and Elastic Mesoporous Carbon with Single‐Layer Graphene Walls

Nishihara

Simura

Kobayashi

et al. 2016

Adv Funct Materials

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122

129

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An oxidation-resistant and elastic mesoporous carbon, graphene mesosponge (GMS), is prepared. GMS has a sponge-like mesoporous framework (mean pore size is 5.8 nm) consisting mostly of single-layer graphene walls, which realizes a high electric conductivity and a large surface area (1940 m 2 g −1 ). Moreover, the graphene-based framework includes only a very small amount of edge sites, thereby achieving much higher stability against oxidation than conventional porous carbons such as carbon blacks and activated carbons. Thus, GMS can simultaneously possess seemingly incompatible properties; the advantages of graphitized carbon materials (high conductivity and high oxidation resistance) and porous carbons (large surface area). These unique features allow GMS to exhibit a suffi cient capacitance (125 F g −1 ), wide potential window (4 V), and good rate capability as an electrode material for electric double-layer capacitors utilizing an organic electrolyte. Hence, GMS achieves a high energy density of 59.3 Wh kg −1 (material mass base), which is more than twice that of commercial materials. Moreover, the continuous graphene framework makes GMS mechanically tough and extremely elastic, and its mean pore size (5.8 nm) can be reversibly compressed down to 0.7 nm by simply applying mechanical force. The sponge-like elastic property enables an advanced force-induced adsorption control.

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Section: Resultsmentioning

confidence: 97%

Oxidation‐Resistant and Elastic Mesoporous Carbon with Single‐Layer Graphene Walls

Nishihara

Simura

Kobayashi

et al. 2016

Adv Funct Materials

Self Cite

122

129

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“…Again, quinone groups introduced into ZTC during the polarization are suggested to causes a large contribution on pseudocapacitance based on the redox couples shown in Fig. 4b, even with the absence of proton [9], according to temperature-programmed desorption and FT-IR analyses. As expected, CV of ZTC in this electrolyte shows the distorted shape together with the redox peaks around -0.8 and 0.4 V (vs. Ag/ AgCI04) as a contribution from the pseudocapacitance (Fig.…”

Section: Electrochemical Behavior Of Buckybowl-like Carbon Framewomentioning

confidence: 90%

Zeolite-templated carbon as electrodes for electrochemical energy storage

Nueangnoraj

2016

2016 Second Asian Conference on Defence Technology (ACDT)

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“…To avoid this issue, the pore size should be as small as possible, while retaining fast ion transport. It is possible to meet these two requirements with zeolite-templated carbon (ZTC), an ordered microporous carbon obtained as a negative replica of a zeolite template with narrow pore size distributions in the mesopore range (>2 nm) [18][19][20][21]. Polyoxometalates (POMs) are well established to achieve a high capacity for energy storage applications (LIBs and capacitors) due to their stable multielectron redox behaviour and structural diversity [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Carbon-Dependent Supercapacitive Behaviour of Nanohybrid Materials between Polyoxometalate and Porous Carbon Derived from Zeolitic Templates

2019

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An electrochemical cell combining the energy storage characteristics of the chemical redox reaction and a physical capacitor effect presents advantages including high energy and power densities, and long durability. In this study, we prepared nanohybrid materials between polyoxometalate (POM) and porous carbon, which have different porous structures and pore sizes, using different zeolitic templates. The POM molecules were loaded inside the porous carbon, and these POM/carbon nanohybrid materials were used as cathode active materials for lithium-ion batteries (LIBs). The performance of these molecular cluster batteries (MCBs) was significantly dependent on the porous carbon. Operando X-ray absorption fine structure (XAFS) and 7 Li solid-state nuclear magnetic resonance (NMR) measurements of the POM/carbon-MCBs revealed that three-dimensional porous carbon with high surface areas can improve the performance. The results highlight the remarkable performance of porous carbon with a three-dimensionally-linked pore network structure as an additive for supercapacitors to realise high-performance energy storage devices.

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Pseudocapacitance of zeolite-templated carbon in organic electrolytes

Cited by 45 publications

References 35 publications

Oxidation‐Resistant and Elastic Mesoporous Carbon with Single‐Layer Graphene Walls

Oxidation‐Resistant and Elastic Mesoporous Carbon with Single‐Layer Graphene Walls

Zeolite-templated carbon as electrodes for electrochemical energy storage

Preparation and Carbon-Dependent Supercapacitive Behaviour of Nanohybrid Materials between Polyoxometalate and Porous Carbon Derived from Zeolitic Templates

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