Hierarchical porous carbon derived from jujube fruits as sustainable and ultrahigh capacitance material for advanced supercapacitors

Yang, Viengkham; Senthil, Raja Arumugam; Pan, Junqing; Kumar, T. Rajesh; Sun, Yanzhi; Liu, Xiaoguang

doi:10.1016/j.jcis.2020.06.080

Cited by 134 publications

(29 citation statements)

References 47 publications

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“…5e; here, the YP-F electrodes with ionophobic characteristics in the organic electrolyte show much higher energy densities than the pristine YP-50. The YP-F60s electrode offers a high energy density of 84.2 W h kg −1 at a power density of 528.7 W kg −1 ; the energy density obtained from this electrode is higher than the values reported for similar devices [21,[30][31][32][33][34].…”

Section: Articlesmentioning

confidence: 59%

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

et al. 2021

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Activated carbon (AC) in organic electrolytebased electric double-layer capacitors (EDLCs) usually suffers from low specific capacitance. Most studies on AC focus on improving its surface area and optimizing pore structures to enhance its electrochemical performance in EDLCs. Unfortunately, the interfacial microenvironment, which is composed of nanoporous carbon and the organic electrolyte confined in it, is always ignored. Herein, a simple and powerful strategy to create AC with an ionophobic surface is proposed to address the poor efficiency of the electric doublelayer process. The polar C-F bonds formed in the AC material are characterized through near-edge X-ray absorption fine structure and X-ray photoelectron spectroscopy. The ionophobic characteristic of YP-F60s in an organic electrolyte is extensively studied via contact angle measurements and smallangle X-ray scattering spectroscopy. An EDLC constructed with YP-F60s as the electrode and 1 mol L −1 tetraethylammonium tetrafluoroborate/propylene carbonate as the electrolyte demonstrates high specific capacitance, low internal resistance, and excellent cycling stability. Our results successfully demonstrate the importance of the interfacial microenvironment of AC and its confined electrolyte to the electrochemical performance of EDLCs. Our work also offers new perspectives on the use of the CF 4 plasma technique to fabricate low-cost superior carbon for EDLCs.

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Section: Articlesmentioning

confidence: 59%

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

et al. 2021

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“…In addition, appropriate heteroatomic doping and targeted porous adjustment engineering to enhance the inherent physicochemical properties and the heterogeneous interfaces of the carbon scaffolds are hard to realize simultaneously in most cases. It is worth noting that activated carbon obtained from biomass compounds can also provide a hierarchically porous structure and inherent heteroatoms [31][32][33][34]. Admittedly these materials have achieved high specific capacitance but what is missing in these researches is that most of them are opportunistic with lack of systematization, while the basis of the research target selection and the further modification method are seldom reported.…”

Section: Introductionmentioning

confidence: 99%

Self-Template Synthesis of Nitrogen-Doped Hollow Carbon Nanospheres with Rational Mesoporosity for Efficient Supercapacitors

et al. 2021

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Rational design and economic fabrication are essential to develop carbonic electrode materials with optimized porosity for high-performance supercapacitors. Herein, nitrogen-doped hollow carbon nanospheres (NHCSs) derived from resorcinol and formaldehyde resin are successfully prepared via a self-template strategy. The porosity and heteroatoms in the carbon shell can be adjusted by purposefully introducing various dosages of ammonium ferric citrate (AFC). Under the optimum AFC dosage (30 mg), the as-prepared NHCS-30 possesses hierarchical architecture, high specific surface area up to 1987 m2·g−1, an ultrahigh mesopore proportion of 98%, and moderate contents of heteroatoms, and these features endow it with a high specific capacitance of 206.5 F·g−1 at 0.2 A·g−1, with a good rate capability of 125 F·g−1 at 20 A·g−1 as well as outstanding electrochemical stability after 5000 cycles in a 6 M KOH electrolyte. Furthermore, the assembled NHCS-30 based symmetric supercapacitor delivers an energy density of 14.1 W·h·kg−1 at a power density of 200 W·kg−1 in a 6 M KOH electrolyte. This work provides not only an appealing model to study the effect of structural and component change on capacitance, but also general guidance to expand functionality electrode materials by the self-template method.

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“…[1][2][3] The conventional secondary batteries, such as Li-ion, Ni-cadmium, lead-acid batteries, and capacitors are turning out to be hopeful power sources for electric vehicles to overcome these problems. [4][5][6][7][8][9][10][11][12][13][14] However, conventional Li-ion battery shows a less energy density, which is attributed to both the aqueous electrolyte and poor cell voltage of electrode materials. [15] At this stage, research focuses on the This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.…”

Section: Introductionmentioning

confidence: 99%

Biomass derived hierarchically porous carbon inherent structure as an effective metal free cathode for Li‐O₂/air battery

Ariharan

Maheswari

Sekar

et al. 2021

Electrochemical Science Adv

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A hierarchical porous carbon framework derived from betel-nut is synthesized and employed as a bifunctional cathode in a Li-O 2 /air battery. The prepared betel nut derived activated porous carbon (BNAPC) material exhibits an ordered and merged tube-like porous morphology and a high specific surface area of 768 m 2 /g. The presence of both meso and micro porous leads to a well-developed 3D interconnected carbon framework, which provides an efficient path for the diffusion of the reactant (oxygen as well as air) and also allows stocking the discharge product of Li 2 O 2 . Therefore, it exhibits a high specific capacity and excellent rate performance. A maximum discharge capacity of 9560 and 2000 mAh/g at a current density of 100 mA/g for oxygen and ambient air respectively as the reactant is achieved. The prepared material also exhibits reversible cyclic stability of 27 cycles with a specific capacity of 1000 mAh/g at a 100 mA/g current density in oxygen atmosphere.

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Hierarchical porous carbon derived from jujube fruits as sustainable and ultrahigh capacitance material for advanced supercapacitors

Cited by 134 publications

References 47 publications

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

Self-Template Synthesis of Nitrogen-Doped Hollow Carbon Nanospheres with Rational Mesoporosity for Efficient Supercapacitors

Biomass derived hierarchically porous carbon inherent structure as an effective metal free cathode for Li‐O₂/air battery

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Hierarchical porous carbon derived from jujube fruits as sustainable and ultrahigh capacitance material for advanced supercapacitors

Cited by 134 publications

References 47 publications

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

Carbon electrodes with ionophobic characteristics in organic electrolyte for high-performance electric double-layer capacitors

Self-Template Synthesis of Nitrogen-Doped Hollow Carbon Nanospheres with Rational Mesoporosity for Efficient Supercapacitors

Biomass derived hierarchically porous carbon inherent structure as an effective metal free cathode for Li‐O2/air battery

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Biomass derived hierarchically porous carbon inherent structure as an effective metal free cathode for Li‐O₂/air battery