Enhanced electrochemical performance of ordered mesoporous carbons by a one-step carbonization/activation treatment

Lin, Gaoxin; Wang, Fan; Wang, Yiliang; Xuan, Huaqing; Yao, Rili; Hong, Zhangmin; Dong, Xiaoping

doi:10.1016/j.jelechem.2015.10.016

Cited by 17 publications

(4 citation statements)

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“…Electrochemistry, 90 (7), 077004 (2022) phenol-formaldehyde resin, 44 thus showing that selectively inducing mesoporosity through templating in AC production as a whole is a good way to improve AC electrochemical specific capacitance. A study by Lin et al 45 on using nanosilica (SBA-15) as template and ZnCl 2 as the activating agent for AC reported a maximum specific capacitance similar to this research. It has been reported that ZnCl 2 is a better activation agent, but environmental problems 5 related to ZnCl 2 waste disposal remains to be a challenge, making KOH one of the more practical and eco-friendly chemical activating agent with similar AC performance.…”

Section: Electrochemical Studiessupporting

confidence: 86%

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

et al. 2022

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A green, rapid, and facile synthesis method of activated carbon was developed and optimized using 50 nm MgO nanoparticle (NP)-based pore templating in tandem with an integrated drying and carbonization-activation heat treatment. TEMPO-oxidized cellulose nanofibers (TOCN) were mixed with MgO NPs and KOH, freeze-dried, heat treated first at 350 °C then at 800 °C to get templated activated carbon. Selective pore formation by MgO and KOH resulting in the development of mesopores and micropores, respectively was confirmed. NPbased templating is confirmed to be viable even with continuous heat treatment, and does not affect any transformations during each heat treatment phase. Through optimization for the highest surface area and optimal hierarchical porosity, templated activated carbon had a high specific capacitance of 269 F g −1 at 0.5 A g −1 with 95.92 % cycle stability after 2000 charge-discharge cycles at 10 A g −1 .

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Section: Electrochemical Studiessupporting

confidence: 86%

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

et al. 2022

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“…In addition, this ESR value is among the lowest ever reported for OMCs and other carbon materials in aqueous electrolytes, typically higher than 1.0 . 39,41,[46][47][48] The maximal specific capacitances, calculated at 1 mHz, were 215, 199, 183 and 191 F g -1 for PhC, GaC, TanC and CatC, respectively. These values follow the same trend already observed for the capacitances calculated by CV and GCD.…”

Section: Electrochemical Performancesmentioning

confidence: 76%

Excellent electrochemical performances of nanocast ordered mesoporous carbons based on tannin-related polyphenols as supercapacitor electrodes

Sánchez-Sánchez

Izquierdo

Ghanbaja

et al. 2017

Journal of Power Sources

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“…Electrochemical measurements were performed with an Autolab PGSTAT302N potentiostat. The capacitance of the electrodes was calculated from the cyclic voltammogram according to the following equation ,, where C s is the specific capacitance (F·g –1 ), m is the mass of the active material (pristine carbon or hybrid material), v is the scan rate, V f and V i are the integration limits of the voltammetric curve, and I ( V ) is the voltammetric current.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effect of Hierarchical Porosity on PMo₁₂Adsorption and Capacitance in Hybrid Carbon–PMo₁₂Electrodes for Supercapacitors

et al. 2022

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Here, we report an industrially scalable synthetic strategy to develop efficient hybrid supercapacitor electrodes with practical mass loading (∼ 10  mg·cm–2), combining hierarchical mesoporous carbons (HMC) and phosphomolybdic acid, H3PMo12O40 (PMo12). A thoughtful analysis on the relationship between the carbon structure and PMo12 incorporation over a family of HMC–PMo12 hybrid materials prepared from carbons with different textures revealed a preferential absorption of PMo12 on small mesopores (∼ 5  nm). These findings challenge the widespread idea that micropores are the optimal choice for PMo12 incorporation; as we have proved, small mesopores maximized PMo12 adsorption, and this later ensured the proper electrolyte diffusion due to bigger interconnected mesopores (∼ 25  nm). Thus, on account of PMo12 incorporation and improved electrolyte diffusion, the hybrid electrode capacitance exhibited a significant increase (up to 119%), observing an enhanced electron transport and improved rate capability performance. In terms of specific capacitance, our material outperforms all of the previously published carbon–polyoxometalate (POMs) systems with practical mass loading, reaching a value up to 326  F·g–1. Therefore, in this paper, we proposed the use of small carbon mesopores for optimal PMo12 adsorption as a novel conceptual approach to develop a hierarchical mesoporous carbon–POM hybrid material, which proved to be an excellent candidate for electrodes in supercapacitors.

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Enhanced electrochemical performance of ordered mesoporous carbons by a one-step carbonization/activation treatment

Cited by 17 publications

References 50 publications

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

Excellent electrochemical performances of nanocast ordered mesoporous carbons based on tannin-related polyphenols as supercapacitor electrodes

Effect of Hierarchical Porosity on PMo₁₂Adsorption and Capacitance in Hybrid Carbon–PMo₁₂Electrodes for Supercapacitors

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Enhanced electrochemical performance of ordered mesoporous carbons by a one-step carbonization/activation treatment

Cited by 17 publications

References 50 publications

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

Facile Synthesis of Templated Activated Carbon from Cellulose Nanofibers and MgO Nanoparticles via Integrated Carbonization-activation Method as an Eco-friendly Supercapacitor

Excellent electrochemical performances of nanocast ordered mesoporous carbons based on tannin-related polyphenols as supercapacitor electrodes

Effect of Hierarchical Porosity on PMo12Adsorption and Capacitance in Hybrid Carbon–PMo12Electrodes for Supercapacitors

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Effect of Hierarchical Porosity on PMo₁₂Adsorption and Capacitance in Hybrid Carbon–PMo₁₂Electrodes for Supercapacitors