Journal ArticleDOI
Electrochemical capacitors based on highly porous carbons prepared by KOH activation
Reads0
Chats0
TLDR
In this paper, coal and pitch-derived carbonaceous materials were activated for 5h at 800°C using potassium hydroxide and 1:4 component ratio, and the porosity development of the resultant activated carbons was assessed by N2 sorption at 77 K and their capability of the charge accumulation in electric double layer was determined using galvanostatic, voltammetric and impedance spectroscopy techniques.About:
This article is published in Electrochimica Acta.The article was published on 2004-02-15. It has received 403 citations till now. The article focuses on the topics: Dielectric spectroscopy & Microporous material.read more
Citations
More filters
Journal ArticleDOI
A review of electrode materials for electrochemical supercapacitors
TL;DR: Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density.
Journal ArticleDOI
Carbon-based materials as supercapacitor electrodes
Lili Zhang,Xiu Song Zhao +1 more
TL;DR: This tutorial review provides a brief summary of recent research progress on carbon-based electrode materials forsupercapacitors, as well as the importance of electrolytes in the development of supercapacitor technology.
Journal ArticleDOI
Recent Advances in Ultrathin Two-Dimensional Nanomaterials
Chaoliang Tan,Xiehong Cao,Xiehong Cao,Xue-Jun Wu,Qiyuan He,Jian Yang,Xiao Zhang,Junze Chen,Wei Zhao,Shikui Han,Gwang-Hyeon Nam,Melinda Sindoro,Hua Zhang +12 more
TL;DR: The unique advances on ultrathin 2D nanomaterials are introduced, followed by the description of their composition and crystal structures, and the assortments of their synthetic methods are summarized.
Journal ArticleDOI
Carbon materials for supercapacitor application.
TL;DR: It appears that nanotubes are a perfect conducting additive and/or support for materials with pseudocapacitance properties, e.g. MnO(2), conducting polymers.
Journal ArticleDOI
Carbon materials for electrochemical capacitors
TL;DR: In this paper, the carbon materials used for electrochemical capacitors were reviewed and discussed the contribution of the surfaces owing to micropores and other larger pores to the capacitance and rate performance of the electric double-layer capacitors.
References
More filters
Journal ArticleDOI
Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)
TL;DR: Mise au point comportant des definitions generales et la terminologie, la methodologie utilisee, les procedes experimentaux, les interpretations des donnees d'adsorption, les determinations de l'aire superficielle, and les donnes sur la mesoporosite et la microporosite.
Journal ArticleDOI
Carbon materials for the electrochemical storage of energy in capacitors
TL;DR: In this article, different types of capacitors with a pure electrostatic attraction and/or pseudocapacitance effects are presented, and their performance in various electrolytes is studied taking into account the different range of operating voltage (1V for aqueous and 3 V for aprotic solutions).
Journal ArticleDOI
Physical Adsorption on Non‐Uniform Surfaces
TL;DR: In this article, a quasi-chemical theory of interaction (BET) was used to analyze adsorption on a uniform surface and showed that the hypotheses of the BET theory lead to substantially no adorption beyond the first layer if E2 = EL, and stepwise isotherms if E1>E2>E3>···>EL.
Journal ArticleDOI
Studies and characterisations of various activated carbons used for carbon/carbon supercapacitors
TL;DR: In this paper, the PICACTIF SC carbon was found to be an interesting active material for supercapacitors, with a specific capacitance as high as 125 F/g.
Journal ArticleDOI
Studies of activated carbons used in double-layer capacitors
Deyang Qu,Hang Shi +1 more
TL;DR: In this paper, the relation between the intrinsic pore size distribution of activated carbon materials and their electrochemical performance as electrodes of supercapacitor was discussed in detail, where activated carbons with larger pore sizes were found to be more suitable for high power applications.