Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors

Xia, Lichen; Huang, Hui; Fan, Zeng; Hu, Dianwen; Zhang, Dongmei; Khan, Abdul Sammed; Usman, Muhammad; Pan, Lujun

doi:10.1016/j.matdes.2019.108048

Cited by 71 publications

(27 citation statements)

References 42 publications

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“…Furthermore, a heteroatom introduced into a carbon host has been confirmed to be an effective means of enhancing surface hydrophilicity and providing extra pseudocapacitance for the carbon matrix. At present, the doping of diverse heteroatoms (such as oxygen, boron, sulfur, nitrogen, phosphorus, and iodine) for capacitive carbons is under intensive research . For instance, Chen et al reported that nitrogen and phosphorous can endow a carbon host with high electron‐donating ability and/or improve the charge density of the carbon surface, thereby improving its chemical and electrical performances.…”

Section: Introductionmentioning

confidence: 99%

“…At present, the doping of diverse heteroatoms (such as oxygen, boron, sulfur, nitrogen, phosphorus, and iodine) for capacitive carbons is under intensive research. [10][11][12][13][14] For instance, Chen et al 15 reported that nitrogen and phosphorous can endow a carbon host with high electron-donating ability and/or improve the charge density of the carbon surface, thereby improving its chemical and electrical performances. Oxygen can improve wetability and induce additional pseudocapacitance for carbon materials as well.…”

Section: Introductionmentioning

confidence: 99%

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From basil seed to flexible supercapacitors: Green synthesis of heteroatom‐enriched porous carbon by self‐gelation strategy

et al. 2020

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Summary Basil seed‐derived multi‐heteroatom–doped porous carbons (BHPCs) are successfully synthesized by a facile gelation, followed by a moderate gel water/KOH coactivation process. The BHPC‐700 prepared at a relatively low KOH loading and activation temperature possesses large specific surface area (1178.3 m2 g−1), well‐defined hierarchical micro/meso porosity, and rich self‐doping heteroatom functionalities (13.08 at% of oxygen, nitrogen, phosphorous, and sulfur). Electrochemical tests demonstrate that the BHPC‐700–based electrode achieves an ultrahigh specific capacitance (464 F g−1 at 0.5 A g−1), outstanding rate performance (retaining 73.3% capacitance at 50 A g−1), and superior cyclic stability (96.8% capacitance retention over 5000 cycles). Furthermore, the BHPC‐700 electrodes are assembled into all‐solid‐state symmetrical supercapacitors. The as‐assembled device gives a high energy density of 15.0 Wh kg−1 at a power density of 500 W kg−1 and remarkable flexibility, demonstrating great application prospects in the area of sustainable portable electronics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From basil seed to flexible supercapacitors: Green synthesis of heteroatom‐enriched porous carbon by self‐gelation strategy

et al. 2020

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“…From these studies, different takeaways and outcomes have been achieved regarding CE for SCs which some of them were that (i) high carbon content, graphite-like and microporous structures positively influence the electric conductivity [70,[81][82][83][84][85][86][87] and (ii) high electric conductivity leads to better electrochemical performance and high capacitances [64,82]. Xia et al [88] developed porous CEs by pyrolysing O-rich biomass (sodium alginate). At the optimal experimental condition, the CE delivered a high Spe.Cap of up to 424.6 F g −1 in 6 M KOH electrolyte at 1 A g −1 .…”

Section: Biomass Carbon Electrodes For Double Layer Supercapacitors (mentioning

confidence: 99%

“…Xia et al [ 88 ] developed porous CEs by pyrolysing O-rich biomass (sodium alginate). At the optimal experimental condition, the CE delivered a high Spe.Cap of up to 424.6 F g −1 in 6 M KOH electrolyte at 1 A g −1 .…”

Section: Preparation Of Acs Through the Chemical Activation Procesmentioning

confidence: 99%

Sustainable Biomass Activated Carbons as Electrodes for Battery and Supercapacitors—A Mini-Review

et al. 2020

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: Some recent developments in the preparation of biomass carbon electrodes (CEs) using various biomass residues for application in energy storage devices, such as batteries and supercapacitors, are presented in this work. The application of biomass residues as the primary precursor for the production of CEs has been increasing over the last years due to it being a renewable source with comparably low processing cost, providing prerequisites for a process that is economically and technically sustainable. Electrochemical energy storage technology is key to the sustainable development of autonomous and wearable electronic devices. This article highlights the application of various types of biomass in the production of CEs by using different types of pyrolysis and experimental conditions and denotes some possible effects on their final characteristics. An overview is provided on the use of different biomass types for the synthesis of CEs with efficient electrochemical properties for batteries and supercapacitors. This review showed that, from different biomass residues, it is possible to obtain CEs with different electrochemical properties and that they can be successfully applied in high-performance batteries and supercapacitors. As the research and development of producing CEs still faces a gap by linking the type and composition of biomass residues with the carbon electrodes’ electrochemical performances in supercapacitor and battery applications, this work tries to diminish this gap. Physical and chemical characteristics of the CEs, such as porosity, chemical composition, and surface functionalities, are reflected in the electrochemical performances. It is expected that this review not only provides the reader with a good overview of using various biomass residues in the energy storage applications, but also highlights some goals and challenges remaining in the future research and development of this topic.

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“…Veoma malu vrednost kapaciteta, čak i pri malim brzinama polarizacije, pokazuje karbonizovani hitozan, čija vrednost ne prelazi 55 F/g. Dobre kapacitivne karakteristike alginata mogu se prepisati prisustvu kiseoničnih grupa koje omogućavaju odvijanje redoks procesa, što doprinosi pseudokapacitivnosti [9]. Ukoliko se uporede kapaciteti C-A-3i i C-A-3n, vidi se da veći specifični kapacitet pokazuje alginat koji je ispran od bakra pre karbonizacije.…”

Section: Rezultati I Diskusijaunclassified

Carbon materials obtained by carbonization of electrochemically gelled alginates and chitosan for supercapacitors

Lužanin¹,

Ležaić²,

Gavrilov³

2020

Tehnika

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The aim of this work is to investigate the capacitive characteristics of carbon-based materials obtained by carbonization of electrochemically synthesized gels based on alginate (CA-i, CA-3i, CA-3n), chitosan (CH-i), as well as their composites (CHA-i) using cyclic voltammetry at different polarization rates. The capacitance characteristics of the examined materials were tested in 6M KOH and 0.5M H2SO4, The specific capacities of the tested materials, in an acidic medium, at a polarization rate of 2 mV / s, decrease according to the following sequence: C-A-i> C-HA-i> C-A-3i> C-A-3n> C-H-i, where the maximum value of the specific capacity is 362 F / g. Also, based on the obtained results, a large decrease in capacity was observed, accompanied by an increase in the speed of polarization of the working electrode. The capacitance properties were successfully separated using the Trasatti and Dunn methods, and the results of both methods are largely consistent. It has been shown that the dominant form of energy storage through Faraday reactions, ie the share of pseudocapacitance, is large in all materials. The highest share of double-layer capacity in acidic medium was recorded in C-H-i, while in the base medium the largest share of double-layer capacity was present in material C-A-3n, due to the fact that electrochemical activity of surface groups (oxygen and / or nitrogen) is pH-dependent.

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Hierarchical macro-/meso-/microporous oxygen-doped carbon derived from sodium alginate: A cost-effective biomass material for binder-free supercapacitors

Cited by 71 publications

References 42 publications

From basil seed to flexible supercapacitors: Green synthesis of heteroatom‐enriched porous carbon by self‐gelation strategy

From basil seed to flexible supercapacitors: Green synthesis of heteroatom‐enriched porous carbon by self‐gelation strategy

Sustainable Biomass Activated Carbons as Electrodes for Battery and Supercapacitors—A Mini-Review

Carbon materials obtained by carbonization of electrochemically gelled alginates and chitosan for supercapacitors

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