3D self-assembly synthesis of hierarchical porous carbon from petroleum asphalt for supercapacitors

Pan, Liqing; Wang, Yixian; Hu, Han; Li, Xinxin; Li, Jialiang; Guan, Lu; Tian, Wei; Wang, Xiaobo; Li, Yanpeng; Wu, Mingbo

doi:10.1016/j.carbon.2018.04.008

Cited by 114 publications

(51 citation statements)

References 41 publications

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“…PMCs/CMCs also show excellent rate performance through their capacitance retention with respect to the increased current loads. As per comparative data represented in Figure k, these samples with SSA BET of ≈2500 m 2 g −1 exhibit equally good rate and capacity performance with respect to the large number of samples reported in the literature . For example, micro‐/mesoporous graphitic carbon, with SSA BET of over 4000 m 2 g −1 , shows a capacitance value of just 225 F g −1 (and C SSA of 5.5 µF cm −2 ) at 0.5 A g −1 , far less than 320 or 270 F g −1 for the PMC450 or UMC450 with SSA BET of 2500 or 1620 m 2 g −1 .…”

Section: Resultssupporting

confidence: 51%

“…The aqueous EDLC capacities between 300–320 F g −1 at 500 mA g −1 in our PMCs/CMCs with specific porosity characteristics outperform many of the other high surface area carbons (Figures g and f, and Figures S9 and 10 and Table S1 in Supporting Information) . This clearly indicates that most of the samples with ultrahigh porosity, for example, the samples with SSA BET greater than 2500 m 2 g −1 show reduced tendency in their EDLC values, and associated areal capacities are lower than 10 µF cm −2 (Figure h).…”

Section: Resultsmentioning

confidence: 73%

“…Interestingly, all the adsorptive capacities for EDCL, CO 2 , H 2 and H 2 O vary in a similar manner, linearly with respect to the SSA BET or pore volume (Figures and g). Here it is interesting to note that with respect to the SSA BET the UMCs show relatively high gravimetric as well as areal (surface area normalized capacitance, C SSA ) EDLC capacity when compared to numerous other high surface area carbons in the literature (Figure g–i) . The EDLC capacities (deduced at current loads of 0.5–1.0 A g −1 ) of the high surface area carbons from literature are summarily presented in Figure g (Table and Table S1 in Supporting Information).…”

Section: Resultsmentioning

confidence: 83%

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Superior Multifunctional Activity of Nanoporous Carbons with Widely Tunable Porosity: Enhanced Storage Capacities for Carbon‐Dioxide, Hydrogen, Water, and Electric Charge

Gadipelli

Howard

Guo

et al. 2020

Advanced Energy Materials

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Nanoporous carbons (NPCs) with engineered specific pore sizes and sufficiently high porosities (both specific surface area and pore volume) are necessary for storing energy in the form of electric charges and molecules. Herein, NPCs, derived from biomass pine‐cones, coffee‐grounds, graphene‐oxide and metal‐organic frameworks, with systematically increased pore width (<1.0 nm to a few nm), micropore volume (0.2–0.9 cm3 g−1) and specific surface area (800–2800 m2 g−1) are presented. Superior CO2, H2, and H2O uptakes of 35.0 wt% (≈7.9 mmol g−1 at 273 K), 3.0 wt% (at 77 K) and 85.0 wt% (at 298 K), respectively at 1 bar, are achieved. At controlled microporosity, supercapacitors deliver impressive performance with a capacity of 320 and 230 F g−1 at 500 mA g−1, in aqueous and organic electrolytes, respectively. Excellent areal capacitance and energy density (>50 Wh kg−1 at high power density, 1000 W kg−1) are achieved to form the highest reported values among the range of carbons in the literature. The noteworthy energy storage performance of the NPCs for all five cases (CO2, H2, H2O, and capacitance in aqueous and organic electrolytes) is highlighted by direct comparison to numerous existing porous solids. A further analysis on the specific pore type governed physisorption capacities is presented.

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Section: Resultssupporting

confidence: 51%

Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 83%

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Superior Multifunctional Activity of Nanoporous Carbons with Widely Tunable Porosity: Enhanced Storage Capacities for Carbon‐Dioxide, Hydrogen, Water, and Electric Charge

Gadipelli

Howard

Guo

et al. 2020

Advanced Energy Materials

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“…The ratio decreases distinctly from C-0 to C-20, indicating the graphitized texture is increasingly generated. [10] The pore structure parameters of the CAs are particularly reflected in Table 2. The results indicate cellulose can increase the graphitization degree by increasing the proportion of ordered structures, which might be adverse to ion storage, but greatly beneficial to charge transfer.…”

Section: Characterization Of the Casmentioning

confidence: 99%

“…[6] Among them, the carbon aerogels with good graphitized texture, high porosity and adjustable structure are easier to achieve excellent electrochemical properties, [7] although there are significant differences in these properties. [9] Many lignin-derived electrode materials have extraordinary electrochemical performance, such as the pitch-lignin carbides, [10] the lignin-based carbon microspheres, [11] the bacterial cellulose/ lignin based carbon aerogels [12] and so on. [8] As the third richest 3D biomass polymer, lignin is constituted by connecting phenylpropane units with various active functional groups.…”

Section: Introductionmentioning

confidence: 99%

Cellulose as an Adhesive for the Synthesis of Carbon Aerogel with a 3D Hierarchical Network Structure for Capacitive Energy Storage

et al. 2019

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As an abundant biomaterial, lignin is often used as a low-end material, because it has an inferior formability at normal temperature and a poor solubility in most solvents. In this study, an innovative lignin/cellulose carbon aerogel with a 3D hierarchical network structure composed of nanochains connecting nanospheres is successfully synthesized by dissolving cellulose and lignin in 1-butyl-3-methylimidazolium chloride, regenerating in deionized water, freeze-drying, and carbonizing. Cellulose, as the adhesive connects lignin by hydrogen bonds, increases the specific surface area and improves the graphitization degree. Consequently, the sample with 10 wt % cellulose (C-10) has a high specific capacitance (166 F g À 1 at 0.1 A g À 1 ), low impedance (τ = 5.56 ms), and excellent capacitance retention (98.6 % after 1000 cycles). The C-10-based flexible supercapacitor exhibits a stable output capability (� 99 %) at different bending angles, long cycle life (� 1000 cycles), and high energy density (102 Wh kg À 1 at 175 W kg À 1 ).[a] T.

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O, N‐Codoped, Self‐Activated, Holey Carbon Sheets for Low‐Cost And High‐Loading Zinc‐Ion Supercapacitors

Xu,

Sun,

Shan

et al. 2023

Adv Funct Materials

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Low‐cost and high‐loading cathodes are crucial for practical application of zinc‐ion supercapacitors (ZICs) but achieving optimal performance in high‐loading electrodes faces challenges due to sluggish ion transport, increased resistance, and unstable structure. Guided by theoretical calculations, high‐loading carbon cathodes based on holey activated carbon sheets (HACS) are fabricated from a carefully chosen molecule. A simple pyrolysis‐leaching treatment transformed the molecule into HACS with large surface area, hierarchical porous structure, and electroactive oxygen/nitrogen dopants. When combined with an aqueous binder, the optimized HACS‐based high‐loading electrode (16.1 mg cm−2) exhibits high‐capacitance (454 F g−1 ) and fast‐rate (1 A g−1) characteristics under lean electrolyte (6.2 µL mg−1). More impressively, HACS is dry‐pressed into free‐standing thick electrodes up to 35.4 mg cm−2 and corresponding practical ZIC under limited Zn and low N/P ratio demonstrates ultrahigh areal capacitance (9 F cm−2) and energy density (3.47 mWh cm−2). The outstanding performance can be attributed to fast ion transport enabled by through‐plane pores of HACS, as well as abundant double‐layer and redox‐active surfaces from favorable heteroatom‐doped porous nanosheets. With its cost‐effectiveness, elemental abundance, and structural tunability, this molecular carbon strategy offers a platform for making self‐activated carbon electrodes at the molecular level towards practical supercapacitors.

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3D self-assembly synthesis of hierarchical porous carbon from petroleum asphalt for supercapacitors

Cited by 114 publications

References 41 publications

Superior Multifunctional Activity of Nanoporous Carbons with Widely Tunable Porosity: Enhanced Storage Capacities for Carbon‐Dioxide, Hydrogen, Water, and Electric Charge

Superior Multifunctional Activity of Nanoporous Carbons with Widely Tunable Porosity: Enhanced Storage Capacities for Carbon‐Dioxide, Hydrogen, Water, and Electric Charge

Cellulose as an Adhesive for the Synthesis of Carbon Aerogel with a 3D Hierarchical Network Structure for Capacitive Energy Storage

O, N‐Codoped, Self‐Activated, Holey Carbon Sheets for Low‐Cost And High‐Loading Zinc‐Ion Supercapacitors

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