Journal ArticleDOI
Microorganism-Derived Heteroatom-Doped Carbon Materials for Oxygen Reduction and Supercapacitors
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TLDR
In this article, an effective ionothermal process is adopted to produce the heteroatom-doped carbon (HDC) using acid activation, the obtained sample exhibits excellent electrocatalytic activity, long-term stability, and excellent resistance to crossover effects in oxygen reduction.Abstract:
Heteroatom-doped carbon (HDC) has attracted tremendous attention due to its promising application in energy conversion and storage. Herein, due to its abundance high rate of reproduction, the microorganism, Bacillus subtilis, is selected as a precursor. An effective ionothermal process is adopted to produce the HDCs. Using acid activation, the obtained sample exhibits excellent electrocatalytic activity, long-term stability, and excellent resistance to crossover effects in oxygen reduction. Additionally, the base-treated sample exhibits superior performance in capacitors to most commercially available carbon materials. Even at a high current density, a relatively high capacitance is retained, indicating a great potential for direct application in energy storage.read more
Citations
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Journal ArticleDOI
Thermal Conversion of Core–Shell Metal–Organic Frameworks: A New Method for Selectively Functionalized Nanoporous Hybrid Carbon
Jing Tang,Rahul R. Salunkhe,Jian Liu,Nagy L. Torad,Masataka Imura,Shuhei Furukawa,Yusuke Yamauchi,Yusuke Yamauchi +7 more
TL;DR: Electrochemical data strongly demonstrate that this nanoporous hybrid carbon material integrates the advantageous properties of the individual NC and GC, exhibiting a distinguished specific capacitance calculated from the galvanostatic charge-discharge curves at a current density of 2 A·g(-1).
Journal ArticleDOI
Designed formation of hollow particle-based nitrogen-doped carbon nanofibers for high-performance supercapacitors
TL;DR: In this paper, a hollow particle-based nitrogen-doped carbon nanofibers (HPCNFs-N) is proposed for supercapacitors, which is composed of interconnected carbon hollow nanoparticles.
Journal ArticleDOI
Biomass-derived carbon: synthesis and applications in energy storage and conversion
Jiang Deng,Mingming Li,Yong Wang +2 more
TL;DR: In this article, the most advanced progress in biomass-derived carbons for use in fuel cells, electrocatalytic water splitting devices, supercapacitors and lithium-ion batteries is summarized.
Journal ArticleDOI
Nitrogen enriched porous carbon spheres: attractive materials for supercapacitor electrodes and CO2 adsorption
TL;DR: In this paper, a series of nitrogen-containing polymer and carbon spheres were obtained by the sol-gel method by one-pot hydrothermal synthesis in the presence of resorcinol/formaldehyde as carbon precursors and ethylenediamine (EDA) as both a base catalyst and nitrogen precursor, followed by carbonization in nitrogen and activation with CO2.
Journal ArticleDOI
Materials Design and System Construction for Conventional and New-Concept Supercapacitors
TL;DR: This review provides a comprehensive summary of recent progress on electrode materials design and burgeoning devices constructions for high‐performance supercapacitors.
References
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Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
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Nitrogen-doped carbon nanotube arrays with high electrocatalytic activity for oxygen reduction.
TL;DR: It is reported that vertically aligned nitrogen-containing carbon nanotubes (VA-NCNTs) can act as a metal-free electrode with a much better electrocatalytic activity, long-term operation stability, and tolerance to crossover effect than platinum for oxygen reduction in alkaline fuel cells.
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Carbon properties and their role in supercapacitors
TL;DR: Supercapacitors are able to store and deliver energy at relatively high rates (beyond those accessible with batteries) because the mechanism of energy storage is simple charge-separation (as in conventional capacitors) as discussed by the authors.
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High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
TL;DR: A family of non–precious metal catalysts that approach the performance of platinum-based systems at a cost sustainable for high-power fuel cell applications, possibly including automotive power.
Journal ArticleDOI
Anomalous Increase in Carbon Capacitance at Pore Sizes Less Than 1 Nanometer
TL;DR: The results challenge the long-held axiom that pores smaller than the size of solvated electrolyte ions are incapable of contributing to charge storage.